CN1500801A - 可提高联合固氮菌固氮水平的基因及其应用 - Google Patents
可提高联合固氮菌固氮水平的基因及其应用 Download PDFInfo
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Abstract
本发明涉及一种可提高联合固氮菌固氮水平的基因及其编码序列、该序列编码的多肽及该多肽在提高联合固氮菌固氮水平方面的应用。本发明克隆了含dct转运系统的DNA片段并进行了序列分析;鉴定了植物因子诱导启动子;构建了重组联合固氮工程菌。本发明提供的DNA片段所编码的多肽可用于生物固氮肥料的制备。
Description
技术领域:
本发明涉及一种可提高联合固氮菌固氮水平的基因及其编码序列、该序列编码的多肽,及该多肽在提高联合固氮菌固氮水平方面的应用。
背景技术:
生物固氮肥料,如联合固氮菌剂可改良土壤及提高产量。然而,直接分离自土壤的联合固氮野00110生菌株在自然条件下固氮效率和田间接种效果很不稳定,难以发挥联合固氮作用。在分子水平和基因水平上研究联合固氮作用的碳-氮代谢的遗传控制关系,解决或改善联合固氮的能量限制具有重要意义。
联合固氮作用有三个重要的限制因子,即氧(失活)、铵(抑制)和能量(限制)。其中,能量限制是导致田间联合固氮效率低下最主要的因素,原因之一是生物固氮作用耗能大,每固定一分子的N2需消耗16个ATP;另一原因是在根表联合固氮菌的碳源供应十分有限。
目前对控制四碳二羧酸运输的dct基因系统研究比较深入的是豌豆根瘤菌和苜蓿根瘤菌。在根瘤菌中,编码C4-二羧酸运输系统的dct基因簇包括三个基因:结构基因dctA(或dctP),调节基因dctB和dctD。苜蓿根瘤菌的dctA基因前有一个NtrA依赖型启动子和一个上游元件。上游序列TGT-N10-GCA可能与NifA相互作用。
dctA(或dctP)编码C4-二羧酸运输蛋白,有8个跨膜螺旋。dctBD编码的DctB和DctD属于NtrC家族的二元调控蛋白,可以对环境中的四碳二羧酸的浓度变化作出响应,激活dctA的转录。碳信号感应因子DctB既能自磷酸化(假定的磷酸化位点416位为组氨酸),也能使DctD磷酸化。碳信号传递因子DctD的N末端(1-117)功能区与K.p的ntrC和E.coli的ntrC编码的蛋白同源,感应DctB传递的信号(Watson1990)。DctD的C末端(389-460)可以被磷酸化,可能是结合DNA的功能区,与RpoN(σ54)一起激活dctA(或dctP)表达(参见Scupham Aj.,Bosworth AH.Inoculation with Sinorhizobium melilotiRMBPC-2 increases A.Falfa yield compared with inoculation with a non-engineered wild typestrain.Appl.Environm.Microbiol.1996.62:4260-4262;Cooperative binding of DctD to thedctA upstream activation sequence of rhizobium meliloti is enhanced in a constitutively activetruncated mutant.J.Biological Chemistry.1996.271:26435-26442;Mutational analysis ofthe phosphate-binding loop of rhizobium meliloti DctD,a σ54-dependent activator.J.Bacteriol.1998,180:2792-2795)。在根瘤菌中,已证明dct基因簇编码四碳二羧酸转运过程中的关键酶系,转dctABD基因的工程苜蓿根瘤菌大大提高了四碳二羧酸类碳源如苹果酸、延胡索酸和丙酮酸等的利用率,在低碳条件下仍能保持高效的共生固氮效率。
以上研究结果表明,克隆和鉴定联合固氮菌中与碳代谢基因dct同源的基因位点,研究其结构和功能,可在基因调控水平上揭示联合固氮菌碳-氮代谢遗传控制分子机制。
发明内容:
本发明要解决的技术问题是:克隆含dct转运系统的DNA片段并进行序列分析;鉴定植物因子诱导启动子:构建重组联合固氮工程菌。
以下是本发明的技术方案:
一、含dct转运系统的DNA片段的克隆、
1、土壤样品采集
从生长野稗及芦苇的沼泽区自然环境中采集土壤样品。这些环境缺少联合固氮作用的三个重要限制因子:氧(失活)、铵(抑制)和能量(限制),土壤中富含与禾本科植物非共生联合固氮菌。
2、分离群落水平总DNA
采用免培养方法从土壤样品中分离群落水平总DNA。
3、群落水平总DNA粘粒文库的构建
用能够自主转移携带不同大小片段的粘粒pLA2917(四环素和卡那霉素抗性)作为载体,构建群落水平总DNA的粘粒文库。
4、筛选含dct转运系统的阳性克隆
根据苜蓿中华根瘤菌(Rhizobium meliloti)的dctA、dctB、dctD的序列设计引物,通过PCR法筛选粘粒文库,获得一插入片段为9.4kb的阳性克隆。
二、所克隆dct转运系统的序列分析
对阳性克隆插入片段的序列分析表明该片段为9408bp,其多核苷酸序列如SEQ ID NO:1所示,共有8个开放阅读框(open reading frame,ORF),在大片段中的位置及物理图谱见图1,各ORF编码及功能见表1。其中ORF dctB、dctD、dctP、dctQ、dctM为四碳二羧酸的转运过程中的关键酶系,它们编码的蛋白序列如SEQ ID NO:2~6所示。
表1 各ORF编码产物及功能
ORF 编码产物 功能
rmlA 葡萄糖-1-磷酸胸苷酸转移酶
脱氧二磷酸胸腺嘧啶-4-脱氢鼠李糖3,5-差
rmlC 向异构酶
rmlD 脱氧二磷酸胸腺嘧啶-4-脱氢鼠李糖还原酶
dctB 四碳二羧酸运输感受蛋白 调控基因,组成一个二元调控
系统,保持低水平的组成型表
dctD 四碳二羧酸运输反应调节蛋白 达。
dctP 可能为四碳二羧酸结合蛋白 结构基因
dctQ 可能为四碳二羧酸转运酶 编码四碳二羧酸转运酶
dctM 可能为四碳二羧酸转运酶 编码四碳二羧酸转运酶
三 植物因子诱导启动子的鉴定
通过PCR扩增dctP基因的启动子序列(如SEQ ID NO:7所示),XhoI酶切连入载体pVK100(Tc抗性、Km抗性)中并在其后连入lacZ基因,筛选具有唯一Tc抗性的转化子。通过接合实验转入Pseudomonas stutzeri A15中,Tc抗性筛选重组菌。重组菌在加入延胡索酸、苹果酸、琥珀酸等四碳二羧酸的培养基中,lacZ表达,菌落表现为蓝斑,说明该启动子为植物因子诱导表达启动子。
四 联合固氮工程菌的构建
将含dctPQM基因簇的xhoI酶切片段连入穿梭载体pSZ21中构建重组质粒pSZ24,转化E.Coli DH5α,再通过三亲接合在帮助质粒pRK2013的帮助下转入Pseudomonasstutzeri A15中,通过卡那抗性筛选得到将dct基因簇整合入Pseudomonas stutzeri A15染色体的重组菌。质粒构建如图2所示。
工程菌大田释放表明重组菌能提高大田水稻产量,在土壤氮和有机质含量低的田块中,接种重组菌株的水稻产量比接种野生型高15.9%,比无菌对照提高20.9%。
本发明提供的可提高联合固氮菌固氮水平的基因簇和编码序列具有如下特性:1)提高联合固氮菌的碳代谢,从而提高固氮水平的功能明确;2)其启动子具有植物因子诱导表达的固氮调节基因的特性;3)所涉及的与四碳二羧酸转运的dctBDP基因簇为新基因,可用于构建联合固氮工程菌。
附图说明:
图1是dct基因排列及物理图谱
图2是广寄主范围转移重组质粒pSZ24的构建
其中Cm:氯霉素抗性;Nm;卡那霉素抗性;mob:移动基因;X:XhoI
具体实施方式:
实施例1含dct转运系统的DNA片段的克隆
1、采集富含与禾本科植物非共生联合固氮菌的土壤样品并分离群落水平总DNA
从生长野稗及芦苇的沼泽区自然环境中采集土壤样品。称取所采集的土壤样品2克,加入0.6g细玻璃珠(d<0.11mm),4000转/分振荡2次。加入300μl 2%SDS+12%Tris-buffered phenol(pH8.0)溶液冰上1小时,加入等量Tris-buffered phenol,pH8.0(约700ml),充分混匀,经4℃,13,000rpm离心5分钟。上层溶液加入0.1倍体积的3M NaAc pH5.2,混匀后加入0.6倍体积异丙醇混匀。DNA沉淀溶于200μl 1×TE(粗DNA)。称100mg氯化铯置于一个新的1.5ml Eppendorf.离心管中,加入100μl粗DNA轻轻混匀,室温黑暗条件下静置1-3小时。室温,13,000rpm,离心20分钟。上清液中加入400μl无菌去离子水和300μl异丙醇,室温静置30分钟。室温,13,000rpm,离心20分钟。沉淀溶于100μ1 1×TE和40μl 8M醋酸钾(KAc),室温静置15分钟。4℃,13,000rpm离心15分钟。上清液加入0.6倍体积异丙醇混匀。室温静置30分钟。室温,15,000rpm离心20分钟。DNA沉淀溶于100μl 1×TE。采用Wizard spin column clean-up分离试剂盒纯化DNA样品。纯化DNA溶于总体积为100μl的10mMTris-EDTA(pH8.0)缓冲液中。
2、群落水平总DNA粘粒文库的构建
本实验采用能够自主转移携带不同大小片段的粘粒pLA2917(四环素和卡那霉素抗性)作为载体,构建群落水平总DNA的粘粒文库。为了使插入Sau3A I酶切DNA片段大小范围在15-23kb之间,用0.006u/μg DNA的Sau3A I酶量大量酶切纯化的群落水平总DNA,采用冻融法回收的9-30kb部分酶切片段,与载体pLA2917/Bgl II片段(四环素抗性)连接。将群落水平总DNA片段与载体的连接产物用噬菌体包装蛋白包装后,转入大肠杆菌JM109中。将转染的大肠杆菌JM109涂布于四环素抗性LB固体培养基上,将长出的菌落分别点于四环素抗性和四环素加卡那霉素抗性的LB固体培养基上,在两种抗性培养基上生长的转化子为粘粒载体自连转化,减去背景菌落数,根据经验公式计算滴度(pfu/ml)为4×106(大于106),表明文库构建符合要求。
3、筛选含dct转运系统的阳性克隆
根据苜蓿中华根瘤菌(Rhizobium meliloti)的dctD的序列设计引物(P1:TGGTGCTGGACAACCGCTCG;P2:GTGGACGGCTCAGTTCAGC),通过PCR法筛选粘粒文库,获得一插入片段为9.4kb的阳性克隆。
实施例2 植物因子诱导启动子的鉴定
通过PCR扩增dctP基因的启动子序列(如SEQ ID NO:7所示),Xho I酶切连入载体pVK100(Tc抗性、Km抗性)中并在其后连入1acZ基因,筛选具有唯一Tc抗性的转化子。通过接合实验转入Pseudomonas stutzeri A15中,Tc抗性筛选重组菌。重组菌在加入延胡索酸、苹果酸、琥珀酸等四碳二羧酸的培养基中,1acZ表达,菌落表现为蓝斑,说明该启动子为植物因子诱导表达启动子。
实施例3 联合固氮工程菌的构建
将含dctPQM基因簇的XhoI酶切片段连入穿梭载体pSZ21中构建重组质粒pSZ24,转化E.Coli DH5α,再通过三亲接合在帮助质粒pRK2013的帮助下转入Pseudomonasstutzeri A15中,通过卡那抗性筛选得到将dct基因簇整合入Pseudomonas stutzeri A15染色体的重组菌。质粒构建如图2所示。
工程菌在辽宁省盘锦市盐碱地研究所的盐碱地试验田中分别进行了大田释放的小区实验,小区面积10平方米,三个重复,设野生菌及无菌对照。处理方法为利用过夜培养菌液稀释100倍对水稻进行蘸根处理,试验结果表明重组菌能提高大田水稻产量,在土壤氮和有机质含量低的田块中,接种重组菌株的水稻产量比接种野生型高15.9%,比无菌对照提高20.9%。
固氮序列
SEQUENCE LISTING
<110>中国农业科学院原子能利用研究所
<120>可提高联合固氮菌固氮水平的基因
<130>02-01
<160>7
<170>PatentIn version 3.1
<210>1
<211>9408
<212>DNA
<213>未知
<400>1
ggatccgcga cattctggtc atctcgacac cgcaggatct gccgcagtac cagaacctgc 60
tgggcgacgg cagccagttc ggggtcaact tcagttacgc cgaacaacct tcgccggacg 120
gcctggccca ggccttcctg atcggtgaag agttcatcgg cgacgattcg gtatgcctga 180
tcctcggcga caacatcttc cacggccagc acttcaccga gaagctgcag cgcgccgcgc 240
gtcaggagaa gggcgccacg gtgttcggct actgggtcaa ggatccggag cgcttcggcg 300
tgatcgactt cgacgagaac ggcaaggcgc tgtccatcga agagaagccg aagaagccca 360
agtccagcta cgcagtgacc ggcctgtact tctacgacaa cgacgtcatc gagatcgcca 420
agtcgatcaa gccctcgcca cgcggcgaac tggagatcac cgacgtcaac atggcctacc 480
tccagcgcgg cgatctcaat gtcgaacgct tcggccgtgg cttcgcctgg ctcgacaccg 540
gtacccacga cagcctgctg gaagcctcgc agtacgtgca gaccatcgag caccgccagg 600
ggctgaaggt ggcctgcctg gaggaaatcg cctaccagaa caagtggatc gaccgcgagc 660
agctgttgcg ccgcgccgac gccctgggca agaccggcta cggccagtac ctgttcaagc 720
tggcgggtga agacgcatga aggtcgtcga aaccagcatt cccgacgtac tgatcatcga 780
gcccaaggtc ttcggcgacg aacgcggttt cttctacgag agcttcaacg cggccgcttt 840
cgaagcggcc acggggctca agcgtcagtt cgtccaggac aaccactcca agtcccagcg 900
cggcgtgctg cgtggtctgc attaccagat ccagcagccg cagggaaaac tggtgcgggt 960
ggtcgccggc gaggtgtttg atgtcgccgt cgacctgcgc aagagttcgc cgagcttcgg 1020
ccgctggttc ggcacccacc tgagcgcgca gaaccagcgg caactgtgga ttcccgaagg 1080
cttcgcacac ggcttcgtgg tgctcagcga gagcgctgaa ttcctctaca agaccaccga 1140
ctactatgcg ccggagcacg agcgcagcct gctgtggaac gacccggaac tgggcatcga 1200
gtggccgctc gacgaggcgc cgcagctgtc ggccaaggac atcgccggca agctgctgcg 1260
cgacgcggag ctgtttgcat gaagatcctg atcaccggca gcaagggcca gctggcccgc 1320
gagctgcagt cggagttggc gggtaccggc aaactgctcg cgctcgggca caatgcgctg 1380
gacctcgccg tacctgagca gattcgcgag caggtacgcc tgttgcggcc ggacctgatc 1440
atcaacgcgg cggcctatac cgccgtcgac ccggcggaaa cccaccgcga gcaggccttc 1500
gcggtcaatg cccgcggccc gcaggtgctc gccgaagaag ccgcgcgcct cggcgtgccg 1560
ctgatccatt attccaccga ctacgtgttc gacggccgca agaccgaacc ctacgacgag 1620
cacgacacgc cgaacccgct gggcgtctat ggcgccagca agctggccgg cgagcaggcg 1680
atccaggccg tcggcggcga acacctgatc ctgcgcacca gctgggtcta ctcgcaacat 1740
ggcaagaact tcctgctgac catgcagcgc ctgctgcagg agcgcgatgc gctgtcggtg 1800
gtcagcgacg aggtcggtgc gccgacctgg gccgcgacca tcgcccgcgt caccgccgaa 1860
ctggtgcgca agcgcaacgc cgggcaggcc gggccgagcg ggctgtatca cctcaccgcc 1920
agcggcgaga cctcctggta cggctttgcc tgcagcatcg ccgagcggtt gcgccaggaa 1980
ggacgcctgc gtgccgagat caccccgatc ctgtccaagg actacccgac cgcggcgcag 2040
cggccgctga attcgcggct caactgcgca cggctgcagc aggactgggg cgtccagctg 2100
ccggactggg aaaccgccct gcacgagtgc tgcacccggg cccgcgacct cgaagccgac 2160
aacgcgcgcc agccggtcgc cgtcggccgc tgagccaact gcgcctgcag ctcgatccat 2220
cgggttgcca cgagccgcga cgctgaacgt cggctcgcgc agcgtgcata atgcgcccga 2280
catccaggcg cctcatgcat gaccgcactt ctcgctcccc gccgcccccg ctggcgcaat 2340
ctcgccctgc tggccctgtt gctggcgcca ttgctctggc cgctgcagca gctcgccgag 2400
cgttactacc gcaacgagct gaccgaacag aaccgtcaga ccctggacct gtacgtcgcc 2460
aacctgctcg gcacgctcaa ccgctacgag gtgctgccgc gcatccttgg tgacctgcct 2520
gcgctgcgcg ccgtgctgca gcaggactca ccccaggtcc gcgacaacgc caaccggctg 2580
ctcaagcgcc tgcgcaacca gaccggcgcc gacgtgatct acctgatggc gaccgacggc 2640
aacaccctgg ccgcttccaa ctgggacgag gaagacagct tcgtcgatcg caacttcgcc 2700
ttccgcccct acttccgcca ggccatggag gggcgccttg ggcgcttctt cggcctcggc 2760
accacctccg gcaagcgcgg ctactacttc ggcgcggcgg tgcgcgacgg cgaccaggtg 2820
ctcggcgtac tggtggtcaa ggtcgatctg gatcacaccg agacgctgtg gggcagcacc 2880
ccggagcagc tgctggtgac cgacaatttc ggcgtggtga tcctcacctc gcggcccgac 2940
tggcgtttcc gcgccacccg cgggctgggc gtggacgagc gcgagcagat cgccttcgat 3000
cagccctacc cgacgctcta cccgcaggac ctgacgctga acatcgacgc ctggctgatc 3060
cagagccgcg agctgaagga gaccggctgg acggtgcgca tcctcgcgcc ggtcagcctg 3120
gtcgagcgcc cggtgcgcac cgtggtcgcg atcggcgccg ccaccctgct ggcgctgctg 3180
ctctggctcg gcctgctgat gcagcgtcgc cgacatttcc tcgaacggct ggcgctggac 3240
agccaggcac gccaacagct ggagcagcgc gtgctcgagc gcacccgcga cctggaggcg 3300
ctgaacagcc ggctcaaggt cgaggtgctc gagcgcgaac aggcccagca ggaactggtg 3360
cgcgcccagg acgaactgct gcaggccggc aagctatcgg cgctgggcac gatgtcggcg 3420
agcatcagtc acgaactcaa ccagccgctg gcagcgatcc gcagctatgc cgacaacgcc 3480
cgcgtactgc tcgaccatga gcgtgtcgac gaggcgcgcg acaacctgcg gctgatcagc 3540
gagctgaccg cgcgcatggc ctcgatcatc gcccacctgc gcgccttcgc ccgtcgcgat 3600
cagcacgcac cggaacgggt cgcgctgcag ccggcgctgg acgatgcgct ggcactgctg 3660
gccaagcgcc gccaggccat gggcgtcgag ctgatccgcg acctgccgga ggcgacgctg 3720
tgggtgcagg ctggcgaaac gcggctgcgg cagatcctcg ccaatctcct ggccaacgct 3780
ctcgacgccc tcggcgaacg gccccagccg cgacgcatct ggctgcgcgc cgagctggag 3840
ggcgacggcg tgctgctgac cctgcgcgac aacggcccgg gcttctccgc cgaggcgctg 3900
cagcgcgccc gcgaaccctt cttcaccacc aagaccagca cccaggggct gggcctcggc 3960
ctggcgatct gcgataccct cacccgcgcc ctgggcggcg agctgcgcat gagcaatcat 4020
gccgagggcg gcgcccagct cggtctgttc ctgcgcagcg ccgaacccgg cgtggccttt 4080
cccaccgagg accatttcca atgagcagcg acaccccgat cagtacccag gcccaggtgg 4140
tgctgatcga cgacgatccg catctgcgcc aggcactgag ccagaccctc gacctggccg 4200
ggctcaaggt ggccagcctg ggcgacgccc gcgatctggc cgcacgtctg ccggcggact 4260
ggcagggggt ggtggtcagc gacatccgca tgcctggcat cgacggactg gagctgctgc 4320
aacagttacg ggcacgcgac agcgagctgc cggtgatcct catcaccggt cacggcgaca 4380
tccagctggc ggtgcaggcc atgcgcgccg gtgcctacga tttcctggaa aagcccttcc 4440
ccagcgaggc gctgctggac agcgtgcggc gtgccctggc gctgcgccag ctggtgctgg 4500
acaaccgctc gctgcgcctg gccctggccg accgccagca gctgtcggca cgcctgctcg 4560
gtcagtcccg ggcgatgctg cgcctgcgcg agcagatcgg cgcattggcc ggaacccagg 4620
ccgacgtgct gattcttggc gagaccgggg ccggcaagga ggtggtggcg cgcgcgctgc 4680
acgacctgtc gaaccgccgc aacggcccgt tcgtggcgat caatgccggt gccctggccg 4740
agtcggtggt ggagagcgag ctgttcggcc acgagcccgg cgcgttcacc ggcgcgcaga 4800
aacgccggat cggcaagttc gagttcgcca acggcggcac cctgttcctc gacgagatcg 4860
agagcatgag cctggatgtg caggtcaagc tgctgcgcct gctgcaggag cgcgtggtcg 4920
aacgcctcgg cggcaaccag tcgatcgccc tggatatccg tgtcatcgcc gcaaccaagg 4980
aagacctgcg cgtcgccgcc gaccagggcc gcttccgcgc cgacctctat taccggctaa 5040
acgtcgcacc cttgcgcatt ccttcgctgc gcgaacgcag cgaggacatc cttctgctgt 5100
ttcagcactt cgccgaggcc gccgcccagc gccacggcct gccggttcgc gaactgcagc 5160
ccgagcagcg tgccacgctg ctgcagcaca cctggccggg caacgtgcgc gagctgcaga 5220
acaccgcgga gcgcttcgcc ctcgggctcg gcctgggcct ggagcggcca ggcagcgagc 5280
cgagcgccgg cctggccggc ggcggcagcc tgggcgaaca ggtcgaagcc ttcgagcgcg 5340
cgctgatcgc cgctgaactg agccgtccac acggttcgct gcgcagcgtc gccgaagcgc 5400
tcggcctgcc gcgtaagaca ctgcatgaca agctgcgcaa gcatggcctg agctttaccg 5460
atgctggcgg aagctcgccc gacgaaaacg actagatggc ggaaatccgc catccttgac 5520
cgccgcatcg ggcctcgact gtcaatcccg tccctccctg caatgccaac cgcggatggc 5580
ctgctcaccc cgcgcaaagg tgcgacctag acgcgcttgt tggcaattgg ccattcaaac 5640
cttcatctat tgctgggtaa actcgctggc ttcaggtgcc tgtgccagcg gttggcacag 5700
gcattgctcc tgaaacccga tgaaccggat ggatcgagtc gcgatcgtgc atcgcatcca 5760
ggccattgcg cctagacttg cccagctggt tactgccggg atgccccgag gcctcccacc 5820
cacaacaaga ggaaacatca atgttcaaac tgactgccaa ggcgctggca tgcgccctgt 5880
cgctgagcat cgctggtctg gcccacgcgg ctgacccgat caccatcaag ttctctcacg 5940
tggtcgccga gaacacgccg aaaggccagg gcgccctgat gttcaagaaa ctggtggaag 6000
agcgtctggc cggcaaggtc gaggtacagg tttacccgaa ctcctcgctg ttcggcgatg 6060
gcaaggaaat ggaagccctg ctgctgggcg acgttcagct gatcgcgccg tcgctggcca 6120
agttcgaaca ctactccaag ggcgttcagg tcttcgacct gccgttcctg ttcgacgaca 6180
tcgcagcggt cgaccgcttc cagcaaggtg aagccggcca gagcctgctg cgctcgatgg 6240
aagacaagaa catcaccggc ctgggctact ggcacaacgg catgaagcag ctgtcggcca 6300
acaagccgct gcgcgagccg aaggacgccc gtggtctgaa gttccgcgta caggcttccg 6360
ccgtgctgga cgagcagttc aaggccgtgc gcgccaaccc gcgcaagatg agcttcgccg 6420
aggtctacca gggcctgcag actggcgtgg tcaacggtgc cgagaacccc tactcgaaca 6480
tctactcgca gaagatgcac gaagtgcaga agtacatcac cgagtccaac cacggtctgc 6540
tggactacat ggtgatcacc aacaccaagt tctggaacgg tctgccggct gacgtacgcg 6600
gcgagctgga aaagatcctg gacgaagtga ccgtcgcggt gaacaagcag gctgacgagc 6660
tgaaccaggc cgacaagcag cgcatcatcg acgccggcac caccgagatt atcgacctga 6720
ctccggagca gcgcgaaatg tggcgtgaag ccatgaagcc ggtctggaag aagttcgaag 6780
gcgaaatcgg tgccgacctg atcaaggccg ccgaagccgc caaccaggct aactaagcct 6840
ttgccgaggg gtggccaccc cgctcctcgg ctgtaccacc cagcgatacc cgacagctca 6900
gtgaaaaaac aaagccgcta gcgaagacca ggcccgcacc aagggcagga aggccatgcc 6960
gaggtgatcc cgggctgggc cgcttcactg gccacaacaa gagtttttca ttgctctgtc 7020
tcccagcctg ccccggctgg ttcacggcgc acctccgtgc tgcctttcga tacaaccgca 7080
gtccatcggg agatgtcatc catgaacgcc ctctggcgcg tctgggacca cttcgaggaa 7140
ggcttcatcg cctttctgct ggccgccatg acactggtga ccttcgtcta cgtgatcctc 7200
aacaacctct acacgctgtt ctacgacttg ggcgaccgct tcgaaggcac cgccgacttc 7260
tggttcgcca tcggtgactt catcatcggt ctggcccagt ccatgacctg gagcaccgcg 7320
ctgaccaagg cgctgttcgc ctggctgatc ttctccggcc tggcctatgg cgtgcgtacc 7380
gccggccata tcggcgtcga cgcgctggtc aagctggcgc cgcgtcatat ccagcgtgtc 7440
atcggcatca tcgcctgcct gttctgcctg ggctacgccg gtctgctgac cgtggccagc 7500
ttcgagtgga tccagaccct gttcatcgcc aacatcggcg ccgaggacct gggccacatc 7560
ggcgtcaagc agtggcacat cggcctgatc gtgccgttcg gtttcgccat ggtgttcatc 7620
cgtttcgccg aaattttcgt gcgcatcctg cgcaacgagc agaccggcct cggcctcgcc 7680
gatgaagcgg ccgatgcgct caagcacggc gaagaggagc ccaagcaatg accatcctgt 7740
tcctgttcgt cgccctcttc gcactgatgt tcatcggtgt gccggtggcc gtttccctgg 7800
gcctggccgg ctcgctgacc atcatgatct tcagccagga ctcggtgcgc tcgctggcga 7860
tcaagctgtt cgagacctcc gagcactaca ccctgctggc cattccgttc ttcctgctgg 7920
ccggcgcctt catgaccacc ggtggcgtgg cccgtcgcct gatcgacttc gccaatgcct 7980
gcgtcggcca catccgtggc ggcctggcca tcggtgcggt gctggcgtgc atgctgttag 8040
ccgcactgtc cggttcgtcg ccggccaccg tggctgcggt cggctccatt gccatcgccg 8100
gcatggtgcg ctccggttac ccgcaggcct tcggcgccgg catcgtctgt aacgccggta 8160
ccctgggcat cctgatcccg ccgtcggtgg tcatggtggt ctacgccgcc gcgaccgaga 8220
cctccgtggg caagctgttc atggccggtg tcgtcccggg catcatgctc ggcctggcgc 8280
tgatggtggc gatctacatc atcgcggtga agaagaacct gccggccctg ccgcgggcga 8340
gcttccgcga gtggctgatc gccgcgcgca aggcgatctg gggcctgctg ctaatggtga 8400
tcatcctcgg cggtatctac tccggcatgt tcaccccgac cgaagcggcg gcggtggcgg 8460
cggtgtattc ggccttcgtc gcgctgttcg tctacaagga catcacgctg cgcgattgcc 8520
cgaaagtgct gctggagtcc ggcaagctgt cgatcatgct gatgttcatc atcgccaacg 8580
ccatgctgtt cgcccacgtg ctgaccaccg agcagatccc gcaggcgatt actgcctggg 8640
tgatcgaagc aggcctgcag ccgtggatgt tcctgctggt ggtgaatatc gtgctgctgg 8700
tcgccggagc cttcatggag ccgtcggcga tcatcctgat cctggcaccg atcctgttcc 8760
ccatcccggt ccagctgggc atcgacccga ttcacctggg catcatcatg gttggtggga 8820
tgcgaatcgg attgatcaca ccaccggtgg ggctgaacct gttcgtcgcc tcggcggtga 8880
cgggcatgcc ggtgacccag gtgatccgcg cggtgctgcc atggctggca ctgatgctga 8940
gcttcctggt gatcatcacc tacgtgccgt cgatctccct ggccctgccg aactggctgg 9000
gcatgtagcc cgccagcaca gccttcctgc ttttcagccc ggccttcgcg ccgggctttt 9060
ttttcgccgg gagaaacctc gggcgggggg tcagaccgcc agcgggtcgg ccgggcgacg 9120
acggaaccag ccggtcagtg acaggcgatc ggcctgggtg accagcacct cgtggggaaa 9180
ctcgccggaa agaaacacca ccagattgcc ggccagcggc ggcacgtcca gctgcgaacc 9240
gtccggcatg tgcatgcgca gttcgccggc atgggcgggc tgccagtccg gattcaggta 9300
cagcacggcg gtcaccgagc ggctgtcgtc atcgcgaaaa cggtccagat gggtctggta 9360
gaaggcaccc ggcggataga aggcgaagtg gcactcgaac tcctcgag 9408
<210>2
<211>601
<212>PRT
<213>未知
<400>2
Met Thr Ala Leu Leu Ala Pro Arg Arg Pro Arg Trp Arg Asn Leu Ala
1 5 10 15
Leu Leu Ala Leu Leu Leu Ala Pro Leu Leu Trp Pro Leu Gln Gln Leu
20 25 30
Ala Glu Arg Tyr Tyr Arg Asn Glu Leu Thr Glu Gln Asn Arg Gln Thr
35 40 45
Leu Asp Leu Tyr Val Ala Asn Leu Leu Gly Thr Leu Asn Arg Tyr Glu
50 55 60
Val Leu Pro Arg Ile Leu Gly Asp Leu Pro Ala Leu Arg Ala Val Leu
65 70 75 80
Gln Gln Asp Ser Pro Gln Val Arg Asp Asn Ala Asn Arg Leu Leu Lys
85 90 95
Arg Leu Arg Asn Gln Thr Gly Ala Asp Val Ile Tyr Leu Met Ala Thr
100 105 110
Asp Gly Asn Thr Leu Ala Ala Ser Asn Trp Asp Glu Glu Asp Ser Phe
115 120 125
Val Asp Arg Asn Phe Ala Phe Arg Pro Tyr Phe Arg Gln Ala Met Glu
130 135 140
Gly Arg Leu Gly Arg Phe Phe Gly Leu Gly Thr Thr Ser Gly Lys Arg
145 150 155 160
Gly Tyr Tyr Phe Gly Ala Ala Val Arg Asp Gly Asp Gln Val Leu Gly
165 170 175
Val Leu Val Val Lys Val Asp Leu Asp His Thr Glu Thr Leu Trp Gly
180 185 190
Ser Thr Pro Glu Gln Leu Leu Val Thr Asp Asn Phe Gly Val Val Ile
195 200 205
Leu Thr Ser Arg Pro Asp Trp Arg Phe Arg Ala Thr Arg Gly Leu Gly
210 215 220
Val Asp Glu Arg Glu Gln Ile Ala Phe Asp Gln Pro Tyr Pro Thr Leu
225 230 235 240
Tyr Pro Gln Asp Leu Thr Leu Asn Ile Asp Ala Trp Leu Ile Gln Ser
245 250 255
Arg Glu Leu Lys Glu Thr Gly Trp Thr Val Arg Ile Leu Ala Pro Val
260 265 270
Ser Leu Val Glu Arg Pro Val Arg Thr Val Val Ala Ile Gly Ala Ala
275 280 285
Thr Leu Leu Ala Leu Leu Leu Trp Leu Gly Leu Leu Met Gln Arg Arg
290 295 300
Arg His Phe Leu Glu Arg Leu Ala Leu Asp Ser Gln Ala Arg Gln Gln
305 310 315 320
Leu Glu Gln Arg Val Leu Glu Arg Thr Arg Asp Leu Glu Ala Leu Asn
325 330 335
Ser Arg Leu Lys Val Glu Val Leu Glu Arg Glu Gln Ala Gln Gln Glu
340 345 350
Leu Val Arg Ala Gln Asp Glu Leu Leu Gln Ala Gly Lys Leu Ser Ala
355 360 365
Leu Gly Thr Met Ser Ala Ser Ile Ser His Glu Leu Asn Gln Pro Leu
370 375 380
Ala Ala Ile Arg Ser Tyr Ala Asp Asn Ala Arg Val Leu Leu Asp His
385 390 395 400
Glu Arg Val Asp Glu Ala Arg Asp Asn Leu Arg Leu Ile Ser Glu Leu
405 410 415
Thr Ala Arg Met Ala Ser Ile Ile Ala His Leu Arg Ala Phe Ala Arg
420 425 430
Arg Asp Gln His Ala Pro Glu Arg Val Ala Leu Gln Pro Ala Leu Asp
435 440 445
Asp Ala Leu Ala Leu Leu Ala Lys Arg Arg Gln Ala Met Gly Val Glu
450 455 460
Leu Ile Arg Asp Leu Pro Glu Ala Thr Leu Trp Val Gln Ala Gly Glu
465 470 475 480
Thr Arg Leu Arg Gln Ile Leu Ala Asn Leu Leu Ala Asn Ala Leu Asp
485 490 495
Ala Leu Gly Glu Arg Pro Gln Pro Arg Arg Ile Trp Leu Arg Ala Glu
500 505 510
Leu Glu Gly Asp Gly Val Leu Leu Thr Leu Arg Asp Asn Gly Pro Gly
515 520 525
Phe Ser Ala Glu Ala Leu Gln Arg Ala Arg Glu Pro Phe Phe Thr Thr
530 535 540
Lys Thr Ser Thr Gln Gly Leu Gly Leu Gly Leu Ala Ile Cys Asp Thr
545 550 555 560
Leu Thr Arg Ala Leu Gly Gly Glu Leu Arg Met Ser Asn His Ala Glu
565 570 575
Gly Gly Ala Gln Leu Gly Leu Phe Leu Arg Ser Ala Glu Pro Gly Val
580 585 590
Ala Phe Pro Thr Glu Asp His Phe Gln
595 600
<210>3
<211>464
<212>PRT
<213>未知
<400>3
Met Ser Ser Asp Thr Pro Ile Ser Thr Gln Ala Gln Val Val Leu Ile
1 5 10 15
Asp Asp Asp Pro His Leu Arg Gln Ala Leu Ser Gln Thr Leu Asp Leu
20 25 30
Ala Gly Leu Lys Val Ala Ser Leu Gly Asp Ala Arg Asp Leu Ala Ala
35 40 45
Arg Leu Pro Ala Asp Trp Gln Gly Val Val Val Ser Asp Ile Arg Met
50 55 60
Pro Gly Ile Asp Gly Leu Glu Leu Leu Gln Gln Leu Arg Ala Arg Asp
65 70 75 80
Ser Glu Leu Pro Val Ile Leu Ile Thr Gly His Gly Asp Ile Gln Leu
85 90 95
Ala Val Gln Ala Met Arg Ala Gly Ala Tyr Asp Phe Leu Glu Lys Pro
100 105 110
Phe Pro Ser Glu Ala Leu Leu Asp Ser Val Arg Arg Ala Leu Ala Leu
115 120 125
Arg Gln Leu Val Leu Asp Asn Arg Ser Leu Arg Leu Ala Leu Ala Asp
130 135 140
Arg Gln Gln Leu Ser Ala Arg Leu Leu Gly Gln Ser Arg Ala Met Leu
145 150 155 160
Arg Leu Arg Glu Gln Ile Gly Ala Leu Ala Gly Thr Gln Ala Asp Val
165 170 175
Leu Ile Leu Gly Glu Thr Gly Ala Gly Lys Glu Val Val Ala Arg Ala
180 185 190
Leu His Asp Leu Ser Asn Arg Arg Aan Gly Pro Phe Val Ala Ile Asn
195 200 205
Ala Gly Ala Leu Ala Glu Ser Val Val Glu Ser Glu Leu Phe Gly His
210 215 220
Glu Pro Gly Ala Phe Thr Gly Ala Gln Lys Arg Arg Ile Gly Lys Phe
225 230 235 240
Glu Phe Ala Asn Gly Gly Thr Leu Phe Leu Asp Glu Ile Glu Ser Met
245 250 255
Ser Leu Asp Val Gln Val Lys Leu Leu Arg Leu Leu Gln Glu Arg Val
260 265 270
Val Glu Arg Leu Gly Gly Asn Gln Ser Ile Ala Leu Asp Ile Arg Val
275 280 285
Ile Ala Ala Thr Lys Glu Asp Leu Arg Val Ala Ala Asp Gln Gly Arg
290 295 300
Phe Arg Ala Asp Leu Tyr Tyr Arg Leu Asn Val Ala Pro Leu Arg Ile
305 310 315 320
Pro Ser Leu Arg Glu Arg Ser Glu Asp Ile Leu Leu Leu Phe Gln His
325 330 335
Phe Ala Glu Ala Ala Ala Gln Arg His Gly Leu Pro Val Arg Glu Leu
340 345 350
Gln Pro Glu Gln Arg Ala Thr Leu Leu Gln His Thr Trp Pro Gly Asn
355 360 365
Val Arg Glu Leu Gln Asn Thr Ala Glu Arg Phe Ala Leu Gly Leu Gly
370 375 380
Leu Gly Leu Glu Arg Pro Gly Ser Glu Pro Ser Ala Gly Leu Ala Gly
385 390 395 400
Gly Gly Ser Leu Gly Glu Gln Val Glu Ala Phe Glu Arg Ala Leu Ile
405 410 415
Ala Ala Glu Leu Ser Arg Pro His Gly Ser Leu Arg Ser Val Ala Glu
420 425 430
Ala Leu Gly Leu Pro Arg Lys Thr Leu His Asp Lys Leu Arg Lys His
435 440 445
Gly Leu Ser Phe Thr Asp Ala Gly Gly Ser Ser Pro Asp Glu Asn Asp
450 455 460
<210>4
<211>331
<212>PRT
<213>未知
<400>4
Met Phe Lys Leu Thr Ala Lys Ala Leu Ala Cys Ala Leu Ser Leu Ser
1 5 10 15
Ile Ala Gly Leu Ala His Ma Ala Asp Pro Ile Thr Ile Lys Phe Ser
20 25 30
His Val Val Ala Glu Asn Thr Pro Lys Gly Gln Gly Ala Leu Met Phe
35 40 45
Lys Lys Leu Val Glu Glu Arg Leu Ala Gly Lys Val Glu Val Gln Val
50 55 60
Tyr Pro Asn Ser Ser Leu Phe Gly Asp Gly Lys Glu Met Glu Ala Leu
65 70 75 80
Leu Leu Gly Asp Val Gln Leu Ile Ala Pro Ser Leu Ala Lys Phe Glu
85 90 95
His Tyr Ser Lys Gly Val Gln Val Phe Asp Leu Pro Phe Leu Phe Asp
100 105 110
Asp Ile Ala Ala Val Asp Arg Phe Gln Gln Gly Glu Ala Gly Gln Ser
115 120 125
Leu Leu Arg Ser Met Glu Asp Lys Asn Ile Thr Gly Leu Gly Tyr Trp
130 135 140
His Asn Gly Met Lys Gln Leu Ser Ala Asn Lys Pro Leu Arg Glu Pro
145 150 155 160
Lys Asp Ala Arg Gly Leu Lys Phe Arg Val Gln Ala Ser Ala Val Leu
165 170 175
Asp Glu Gln Phe Lys Ala Val Arg Ala Asn Pro Arg Lys Met Ser Phe
180 185 190
Ala Glu Val Tyr Gln Gly Leu Gln Thr Gly Val Val Asn Gly Ala Glu
195 200 205
Asn Pro Tyr Ser Asn Ile Tyr Ser Gln Lys Met His Glu Val Gln Lys
210 215 220
Tyr Ile Thr Glu Ser Asn His Gly Leu Leu Asp Tyr Met Val Ile Thr
225 230 235 240
Asn Thr Lys Phe Trp Asn Gly Leu Pro Ala Asp Val Arg Gly Glu Leu
245 250 255
Glu Lys Ile Leu Asp Glu Val Thr Val Ala Val Asn Lys Gln Ala Asp
260 265 270
Glu Leu Asn Gln Ala Asp Lys Gln Arg Ile Ile Asp Ala Gly Thr Thr
275 280 285
Glu Ile Ile Asp Leu Thr Pro Glu Gln Arg Glu Met Trp Arg Glu Ala
290 295 300
Met Lys Pro Val Trp Lys Lys Phe Glu Gly Glu Ile Gly Ala Asp Leu
305 310 315 320
Ile Lys Ala Ala Glu Ala Ala Asn Gln Ala Asn
325 330
<210>5
<211>212
<212>PRT
<213>未知
<400>5
Met Ser Ser Met Asn Ala Leu Trp Arg Val Trp Asp His Phe Glu Glu
1 5 10 15
Gly Phe Ile Ala Phe Leu Leu Ala Ala Met Thr Leu Val Thr Phe Val
20 25 30
Tyr Val Ile Leu Asn Asn Leu Tyr Thr Leu Phe Tyr Asp Leu Gly Asp
35 40 45
Arg Phe Glu Gly Thr Ala Asp Phe Trp Phe Ala Ile Gly Asp Phe Ile
50 55 60
Ile Gly Leu Ala Gln Ser Met Thr Trp Ser Thr Ala Leu Thr Lys Ala
65 70 75 80
Leu Phe Ala Trp Leu Ile Phe Ser Gly Leu Ala Tyr Gly Val Arg Thr
85 90 95
Ala Gly His Ile Gly Val Asp Ala Leu Val Lys Leu Ala Pro Arg His
100 105 110
Ile Gln Arg Val Ile Gly Ile Ile Ala Cys Leu Phe Cys Leu Gly Tyr
115 120 125
Ala Gly Leu Leu Thr Val Ala Ser Phe Glu Trp Ile Gln Thr Leu Phe
130 135 140
Ile Ala Asn Ile Gly Ala Glu Asp Leu Gly His Ile Gly Val Lys Gln
145 150 155 160
Trp His Ile Gly Leu Ile Val Pro Phe Gly Phe Ala Met Val Phe Ile
165 170 175
Arg Phe Ala Glu Ile Phe Val Arg Ile Leu Arg Asn Glu Gln Thr Gly
180 185 190
Leu Gly Leu Ala Asp Glu Ala Ala Asp Ala Leu Lys His Gly Glu Glu
195 200 205
Glu Pro Lys Gln
210
<210>6
<211>426
<212>PRT
<213>未知
<400>6
Met Thr Ile Leu Phe Leu Phe Val Ala Leu Phe Ala Leu Met Phe Ile
1 5 10 15
Gly Val Pro Val Ala Val Ser Leu Gly Leu Ala Gly Ser Leu Thr Ile
20 25 30
Met Ile Phe Ser Gln Asp Ser Val Arg Ser Leu Ala Ile Lys Leu Phe
35 40 45
Glu Thr Ser Glu His Tyr Thr Leu Leu Ala Ile Pro Phe Phe Leu Leu
50 55 60
Ala Gly Ala Phe Met Thr Thr Gly Gly Val Ala Arg Arg Leu Ile Asp
65 70 75 80
Phe Ala Asn Ala Cys Val Gly His Ile Arg Gly Gly Leu Ala Ile Gly
85 90 95
Ala Val Leu Ala Cys Met Leu Leu Ala Ala Leu Ser Gly Ser Ser Pro
100 105 110
Ala Thr Val Ala Ala Val Gly Ser Ile Ala Ile Ala Gly Met Val Arg
115 120 125
Ser Gly Tyr Pro Gln Ala Phe Gly Ala Gly Ile Val Cys Asn Ala Gly
130 135 140
Thr Leu Gly Ile Leu Ile Pro Pro Ser Val Val Met Val Val Tyr Ala
145 150 155 160
Ala Ala Thr Glu Thr Ser Val Gly Lys Leu Phe Met Ala Gly Val Val
165 170 175
Pro Gly Ile Met Leu Gly Leu Ala Leu Met Val Ala Ile Tyr Ile Ile
180 185 190
Ala Val Lys Lys Asn Leu Pro Ala Leu Pro Arg Ala Ser Phe Arg Glu
195 200 205
Trp Leu Ile Ala Ala Arg Lys Ala Ile Trp Gly Leu Leu Leu Met Val
210 215 220
Ile Ile Leu Gly Gly Ile Tyr Ser Gly Met Phe Thr Pro Thr Glu Ala
225 230 235 240
Ala Ala Val Ala Ala Val Tyr Ser Ala Phe Val Ala Leu Phe Val Tyr
245 250 255
Lys Asp Ile Thr Leu Arg Asp Cys Pro Lys Val Leu Leu Glu Ser Gly
260 265 270
Lys Leu Ser Ile Met Leu Met Phe Ile Ile Ala Asn Ala Met Leu Phe
275 280 285
Ala His Val Leu Thr Thr Glu Gln Ile Pro Gln Ala Ile Thr Ala Trp
290 295 300
Val Ile Glu Ala Gly Leu Gln Pro Trp Met Phe Leu Leu Val Val Asn
305 310 315 320
Ile Val Leu Leu Val Ala Gly Ala Phe Met Glu Pro Ser Ala Ile Ile
325 330 335
Leu Ile Leu Ala Pro Ile Leu Phe Pro Ile Pro Val Gln Leu Gly Ile
340 345 350
Asp Pro Ile His Leu Gly Ile Ile Met Val Gly Gly Met Arg Ile Gly
355 360 365
Leu Ile Thr Pro Pro Val Gly Leu Asn Leu Phe Val Ala Ser Ala Val
370 375 380
Thr Gly Met Pro Val Thr Gln Val Ile Arg Ala Val Leu Pro Trp Leu
385 390 395 400
Ala Leu Met Leu Ser Phe Leu Val Ile Ile Thr Tyr Val Pro Ser Ile
405 410 415
Ser Leu Ala Leu Pro Asn Trp Leu Gly Met
420 425
<210>7
<211>349
<212>DNA
<213>未知
<400>7
gatggcggaa atccgccatc cttgaccgcc gcatcgggcc tcgactgtca atcccgtccc 60
tccctgcaat gccaaccgcg gatggcctgc tcaccccgcg caaaggtgcg acctagacgc 120
gcttgttggc aattggccat tcaaaccttc atctattgct gggtaaactc gctggcttca 180
ggtgcctgtg ccagcggttg gcacaggcat tgctcctgaa acccgatgaa ccggatggat 240
cgagtcgcga tcgtgcatcg catccaggcc attgcgccta gacttgccca gctggttact 300
gccgggatgc cccgaggcct eccacccaca acaagaggaa acatcaatg 349
Claims (5)
1、具有SEQ ID NO:1所示序列的DNA。
2、根据权利要求1所示的DNA序列编码的多肽,其序列如SEQ ID NO:2~6所示。
3、具有SEQ ID NO:7所示序列的DNA。
4、根据权利要求1所示的DNA序列编码的多肽在提高联合固氮菌固氮水平方面的应用。
5、根据权利要求2所示序列的植物因子诱导启动子在提高联合固氮菌固氮水平方面的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA021488134A CN1500801A (zh) | 2002-11-18 | 2002-11-18 | 可提高联合固氮菌固氮水平的基因及其应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA021488134A CN1500801A (zh) | 2002-11-18 | 2002-11-18 | 可提高联合固氮菌固氮水平的基因及其应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1500801A true CN1500801A (zh) | 2004-06-02 |
Family
ID=34233344
Family Applications (1)
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111527057A (zh) * | 2017-10-25 | 2020-08-11 | 皮沃特生物股份有限公司 | 靶向改良植物性状的固氮的基因靶标 |
US11479516B2 (en) | 2015-10-05 | 2022-10-25 | Massachusetts Institute Of Technology | Nitrogen fixation using refactored NIF clusters |
US11565979B2 (en) | 2017-01-12 | 2023-01-31 | Pivot Bio, Inc. | Methods and compositions for improving plant traits |
US11739032B2 (en) | 2015-07-13 | 2023-08-29 | Pivot Bio, Inc. | Methods and compositions for improving plant traits |
US11946162B2 (en) | 2012-11-01 | 2024-04-02 | Massachusetts Institute Of Technology | Directed evolution of synthetic gene cluster |
US11993778B2 (en) | 2017-10-25 | 2024-05-28 | Pivot Bio, Inc. | Methods and compositions for improving engineered microbes that fix nitrogen |
-
2002
- 2002-11-18 CN CNA021488134A patent/CN1500801A/zh active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11946162B2 (en) | 2012-11-01 | 2024-04-02 | Massachusetts Institute Of Technology | Directed evolution of synthetic gene cluster |
US11739032B2 (en) | 2015-07-13 | 2023-08-29 | Pivot Bio, Inc. | Methods and compositions for improving plant traits |
US11479516B2 (en) | 2015-10-05 | 2022-10-25 | Massachusetts Institute Of Technology | Nitrogen fixation using refactored NIF clusters |
US11565979B2 (en) | 2017-01-12 | 2023-01-31 | Pivot Bio, Inc. | Methods and compositions for improving plant traits |
CN111527057A (zh) * | 2017-10-25 | 2020-08-11 | 皮沃特生物股份有限公司 | 靶向改良植物性状的固氮的基因靶标 |
US11993778B2 (en) | 2017-10-25 | 2024-05-28 | Pivot Bio, Inc. | Methods and compositions for improving engineered microbes that fix nitrogen |
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