CN106318882A - 一株太空微杆菌lct‑h2 - Google Patents

一株太空微杆菌lct‑h2 Download PDF

Info

Publication number
CN106318882A
CN106318882A CN201610455947.0A CN201610455947A CN106318882A CN 106318882 A CN106318882 A CN 106318882A CN 201610455947 A CN201610455947 A CN 201610455947A CN 106318882 A CN106318882 A CN 106318882A
Authority
CN
China
Prior art keywords
lct
microbacterium
strain
bacterial strain
genome
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201610455947.0A
Other languages
English (en)
Inventor
刘长庭
张学林
周宏�
方向群
姜学革
徐绸
刘岩
潘磊
黄兵
李佳
余昳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chinese PLA General Hospital
Original Assignee
Chinese PLA General Hospital
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chinese PLA General Hospital filed Critical Chinese PLA General Hospital
Priority to CN201610455947.0A priority Critical patent/CN106318882A/zh
Publication of CN106318882A publication Critical patent/CN106318882A/zh
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20Bacteria; Culture media therefor
    • C12N1/205Bacterial isolates
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12RINDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
    • C12R2001/00Microorganisms ; Processes using microorganisms
    • C12R2001/01Bacteria or Actinomycetales ; using bacteria or Actinomycetales

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Genetics & Genomics (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Medicinal Chemistry (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Virology (AREA)
  • Biomedical Technology (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

本发明涉及一株“神舟九号”飞船返回舱中分离得到下行菌株微杆菌LCT‑H2(Microbacterium sp.LCT‑H2),为短杆状的革兰氏阳性菌,可利用葡萄糖、纤维二糖等多种碳源。对该菌进行16S rRNA测序,鉴定其为微杆菌属成员。进行了全基因组测序分析,其基因组大小为3.36 Mbp,包括3235个编码序列和53个RNA基因,COG数据库比对共注释到21组COG功能分类。对研究密闭飞行器内微生物种类分布等提供了一定帮助。

Description

一株太空微杆菌LCT-H2
技术领域
本发明属于生物技术领域;更具体地,本发明涉及微杆菌LCT-H2及其生物学特性、全基因组学测序。
背景技术
在随着航天技术的发展,人类的外太空探索活动越来越频繁。在地面上微生物几乎无处不在,大多数存在于人类皮肤、口腔、鼻咽部和胃肠道。尽管载人飞船及内部物品等经过严格的真空消毒,载人航天器密闭环境条件下仍然容易滋生细菌和真菌等微生物,这些微生物能在密闭舱室内的金属、高分子复合材料等表面形成生物膜,它们的生长繁殖和代谢会对材料产生腐蚀,严重威胁空间站的长期在轨运行安全,缩短空间站的服役时间。研究密闭航天器内的微生物种类对于航天器内微生物的安全防护具有重要的意义。
早期人们对许多环境微生物的认识仅来自于对16S rRNA的研究,一些重要的遗传信息很难获得。现在越来越多的新的培养和分子生物学方法,例如基因组学、蛋白质组学、宏基因组学等,被用来研究新获得微生物的潜在特征和功能等。
随着人类基因组计划的实施和进行,生物体基因组研究已经成为生命科学研究的前沿领域,而与之相对应的微生物基因组研究正在广泛开展。细菌是微生物的一种,其基因组小、操作简单且实验周期短,其研究的工作可为人类基因组研究提供有益的参考;同时随着测序技术的更新换代和高通量测序技术的出现,细菌基因组的测序成本和所需时间已大幅度降低。初步研究了该菌的表型及生理生化特征,对研究密闭飞行器内微生物种类分布、材料的微生物腐蚀等提供了帮助。
发明内容
本发明的微杆菌LCT-H2菌株(Microbacterium sp. LCT-H2)自“神舟九号”飞船的返回舱内冷凝水分离得到。
本发明提供的该菌株,其保藏号为CGMCC No.12570。
菌株LCT-H2可在MH固体平板上形成无色、表面光滑且边缘整齐菌落。为革兰氏阳性菌。菌体呈杆状,分散排布,表面没有鞭毛、菌毛等结构。LCT-H2菌株可利用多种碳源,包括单糖(葡萄糖、果糖、甘露糖等)、二糖(纤维二糖、龙胆二糖、蔗糖等),多糖(果胶、糊精等)以及多种无机碳源等,对醋竹桃霉素(Troleandomycin)、硫酸四癸钠(Niaproof 4)、二甲胺四环素(Minocycline)等敏感(图3)。
所述的LCT-H2菌株,进行全基因组测序,并进行分析,其基因组大小为3.36 Mbp,包括3235个编码序列和53个RNA基因,COG数据库比对共注释到21 组COG 功能分类。
表1 Microbacterium sp. LCT-H2菌株核苷酸含量和基因水平的基因组。
Attribute Value % of total
Size (bp) 3356231
G+C content (bp) 2366143 70.5
Coding region (bp) 3084376 91.9
Total genes 3235 100
RNA genes 53 1.64
Protein-coding genes 3182 98.36
Genes in paralog clusters 128 3.96
Genes assigned to COGs
1 or more conserved domains 1316 40.68
2 or more conserved domains 185 5.72
3 or more conserved domains 49 1.51
4 or more conserved domains 25 0.77
Genes with signal peptides 208 6.43
Genes with transmembrane helices 907 28.04
Paralogous groups 56 1.73
表2 LCT-H2基因组21个COG分类的基因数统计。
Code Value % age Description
J 121 3.74 Translation
A 1 0.03 RNA processing and modification
K 108 3.34 Transcription
L 80 2.47 Replication, recombination and repair
D 15 0.46 Cell cycle control, mitosis and meiosis
V 22 0.68 Defense mechanisms
T 48 1.48 Signal transduction mechanisms
M 59 1.82 Cell wall/membrane biogenesis
N 11 0.34 Cell motility
U 23 0.71 Intracellular trafficking and secretion
O 48 1.48 Posttranslational modification, protein turnover, chaperones
C 96 2.97 Energy production and conversion
G 135 4.17 Carbohydrate transport and metabolism
E 204 6.31 Amino acid transport and metabolism
F 57 1.76 Nucleotide transport and metabolism
H 56 1.73 Coenzyme transport and metabolism
I 66 2.04 Lipid transport and metabolism
P 134 4.14 Inorganic ion transport and metabolism
Q 39 1.21 Secondary metabolites biosynthesis, transport and catabolism
R 175 5.41 General function prediction only
S 77 2.38 Function unknown
- 1660 51.31 Not in COGs
附图说明
图1 菌株LCT-H2的16S rRNA基因序列NJ系统发育树。
图2 菌株LCT-H2的革兰氏染色。
图3 菌株LCT-H2的电子显微镜观察。
具体实施方式
下述实施实例中所用的实验方法,如无特殊说明,均为常规方法。
下述实施实例中所用的材料、试剂,如无特殊说明,均可从商业途径获得。
实施实例一:菌株LCT-H2培养。
菌株 LCT-H2 为“神舟九号”飞船的返回舱内冷凝水分离得到。菌株分别于37 ℃培养箱或摇床中进行静置或振荡培养,液体培养基为脑心浸出液培养基(BHI,Oxiod),配方为 37 g/L BHI;固体培养基为MH 平板。
实施实例二:菌株LCT-H2菌种鉴定及系统发育树构建。
LCT-H2接种至BHI液体培养基,37 ℃,180 rpm过夜培养,6000 rpm离心5 min收集菌体,弃上清。利用Qiagen公司的基因组DNA 提取试剂盒(Code No. 51304,详细步骤见产品说明书) 提取收集的菌体的基因组DNA。以Microbacterium sp. LCT-H2的基因组DNA为模板,利用细菌16s rRNA通用测序引物27F(5’- AGAGTTTGATCCTGGCTCAG-3’)和1492R(5’-TACGGCTACCTTGTTACGACTT-3’)扩增其16s rRNA片段并测序,得到其碱基序列。用 CLUSTALW(http://www.ebi.ac.uk/Tools/msa/clustalw2/)进行多序列比对,并用 MEGA 5.0构建NJ 系统发育树(3)。
实施实例三:菌株LCT-H2的革兰氏染色。
采用革兰氏染色试剂盒(Code No. G1060, Solarbio)对LCT-H2菌体进行染色。BHI液体培养基过夜培养菌体,将菌液滴于载玻片中央,在酒精灯上略加温,使之迅速干燥。结晶紫、沙黄染色液对干燥菌体一次染色脱色,详细步骤见产品说明书。染色完成并晾干后,置于光学显微镜下观察染色情况。
实施实例四:菌株LCT-H2的电子显微镜观察。
分别在透射电子显微镜(TEM)和扫描电子显微镜(SEM)下观察菌体形态。1 ml培养至稳定前期的菌液,6000 rpm离心5 min收集菌体,弃上清;PBS缓冲液洗涤一次后将菌体悬浮至合适浓度。菌悬液等体积与4% 多聚甲醛+0.5%戊二醛溶液混合,滴在有支持膜的铜网上,15 min 后用滤纸吸取未吸附样品;吸取磷钨酸染液小心滴在铜网上,染色1 min后用滤纸吸取未吸附的样品;样品干燥后在Philips EM 400T型透射电子显微镜(TEM)下观察菌体形态。首先用2.5%戊二醛、PBS缓冲液以及1% 锇酸清洗菌体,乙醇梯度脱水并乙酸异戊酯置换,样品干燥后做喷金处理(4),处理好的样品置于FEI Quanta 200型扫描电镜下观察。
实施实例五:菌株LCT-H2 的生理生化鉴定实验。
Biolog微孔板(Biolog GENIII MicroPlate, Biolog)用来对LCT-H2菌株进行94种表型检测,其中包括71种碳源利用率分析和23种化学敏感性分析。Microbacterium sp.LCT-H2接种至BHI液体培养基,37 °C,180 rpm过夜培养,6000 rpm离心5 min收集菌体,弃上清。将菌体用IF- B接种液悬浮并调节至适当浓度(OD600约为0.8),分别取100 ul接种液加入Biolog微孔板的96个孔中,将微孔板放置在37 °C培养箱中培养24小时后,用酶标仪测定590 nm各孔的吸光度值(OD590)。
实施实例六:菌株LCT-H2 的基因组测序、组装及注释。
基因组DNA样品委托美吉生物有限公司进行全基因组序列测定、基因预测、基因功能注释、非编码RNA预测等工作,序列分析工作委托美吉生物有限公司和上海瀚宇生物科技有限公司共同完成。
基因组DNA 提取后进行质量鉴定,在浓度和纯度达到测序要求后进行全基因组测序。利用Covaris进行基因组DNA片段化,构建插入片段约300-500 bp 的基因组测序文库,通过桥式PCR扩增得到DNA簇,然后采用Illumina Hiseq2000测序技术完成该菌株的基因组扫描测序,获得约1 Gb 的原始测序数据。Illumina HiSeq2000 测序得到的原始图像数据经过Base Calling 转化为序列数据,结果以FASTQ 文件格式来存储,包含测序read 的序列信息以及测序质量信息;原始数据经过预处理去除接头、引物及低质量数据后,利用SOAPdenovo (http://soa p.genomics.org.cn/)拼接软件对优化序列进行多个Kmer 参数的拼接,得到最优的组装结果,并运用GapCloser 软件对组装结果进行局部内洞填充和碱基校正;分别利用RNAmmer 和tRNAscan-SE 软件对基因组中包含的rRNA 和tRNA 进行预测;利用Glimmer 3.0(http://www.cbcb.umd.edu/software/glimmer/)软件进行基因预测;利用各种数据库进行基因功能注释和分类。
关于保藏的LCT-H2菌株的说明
A. 菌种的保藏单位名称和地址
名称:中国微生物菌种保藏管理委员会普通微生物中心
地址:北京市朝阳区北辰西路1号院3号 中国科学院微生物研究所
B. 交机构保藏的日期
2016年6月1日
C. 保藏机构给予的保藏号
CGMCC No.12570
D. 分类命名
微杆菌 Microbacterium sp。

Claims (3)

1.一株“神舟九号”飞船返回舱中分离得到下行菌株微杆菌LCT-H2菌株(Microbacterium sp. LCT-H2),其保藏号为CGMCC 12570。
2.根据权利要求1所述的一株“神舟九号”飞船返回舱中分离得到下行菌株LCT-H2,其特征在于:为短杆状的革兰氏阳性菌,可利用葡萄糖、纤维二糖等多种碳源。
3.根据权利要求1所述的一株“神舟九号”飞船返回舱中分离得到下行菌株LCT-H2,进行全基因组测序并进行分析。
CN201610455947.0A 2016-06-22 2016-06-22 一株太空微杆菌lct‑h2 Withdrawn CN106318882A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610455947.0A CN106318882A (zh) 2016-06-22 2016-06-22 一株太空微杆菌lct‑h2

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610455947.0A CN106318882A (zh) 2016-06-22 2016-06-22 一株太空微杆菌lct‑h2

Publications (1)

Publication Number Publication Date
CN106318882A true CN106318882A (zh) 2017-01-11

Family

ID=57725113

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610455947.0A Withdrawn CN106318882A (zh) 2016-06-22 2016-06-22 一株太空微杆菌lct‑h2

Country Status (1)

Country Link
CN (1) CN106318882A (zh)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105132317A (zh) * 2015-08-31 2015-12-09 苏州硒谷科技有限公司 氧化微杆菌Microbacterium oxydans YLX-2及其应用

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105132317A (zh) * 2015-08-31 2015-12-09 苏州硒谷科技有限公司 氧化微杆菌Microbacterium oxydans YLX-2及其应用

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
NCBI: "Microbacterium sp. LCT-H2", 《BIOPROJECT》 *
P. KAUSHIK等: "Arsenic Hyper-tolerance in Four Microbacterium Species Isolated from Soil Contaminated with Textile Effluent", 《TOXICOL INT》 *
周宏等: "神舟十号飞船下行菌株Microbacterium sp.LCT-H2的基因组测序及分析", 《载人航天》 *

Similar Documents

Publication Publication Date Title
Dionisi et al. Bioprospection of marine microorganisms: biotechnological applications and methods
Vasylyeva Selection of the complex of microbiological tests for Bordetella bronchiseptica typing
Gtari et al. An update on the taxonomy of the genus Frankia Brunchorst, 1886, 174 AL
Zhang et al. Diversity of culturable actinobacteria from Qinghai–Tibet plateau, China
Zervas et al. Genomics of aerobic photoheterotrophs in wheat phyllosphere reveals divergent evolutionary patterns of photosynthetic genes in Methylobacterium spp.
Parag et al. Molecular and culture dependent characterization of endolithic bacteria in two beach sand samples and description of Rhizobium endolithicum sp. nov.
Ray et al. From space to Earth: Bacillus aryabhattai found in the Indian sub-continent
CN114317361B (zh) 一株链霉菌新菌株及其分离方法和应用
He et al. Roseomonas sediminicola sp. nov., isolated from fresh water
Sanyika et al. The soil and plant determinants of community structures of the dominant actinobacteria in Marion Island terrestrial habitats, Sub-Antarctica
Leo et al. Genomic characterization and radiation tolerance of Naganishia kalamii sp. nov. and Cystobasidium onofrii sp. nov. from Mars 2020 mission assembly facilities
JP5559690B2 (ja) パラクロレラ属新規微細藻類
Cleland Epistemological issues in the study of microbial life: alternative terran biospheres?
Kramer et al. Phylogenetic relationship and secondary metabolite production of marine fungi producing the cyclodepsipeptides scopularide A and B
CN106318882A (zh) 一株太空微杆菌lct‑h2
Park et al. Tabrizicola algicola sp. nov. isolated from culture of microalga Ettlia sp.
CN106085910A (zh) 一种空间甲基杆菌lct‑s10‑2
Guilhot et al. Genome sequence and description of Anaeromassilibacillus senegalensis gen. nov., sp. nov., isolated from the gut of patient with kwashiorkor
Boxberger et al. Draft genome and description of Microvirga mediterraneensis strain Marseille-Q2068T sp. nov., a new bacterium isolated from human healthy skin
CN106047755A (zh) 一株空间克氏库克菌株lct‑h5
CN105925510A (zh) 一株空间不动杆菌lct-h3
CN105936883A (zh) 一株空间少动鞘氨醇单胞菌株lct-sp1
CN106011012A (zh) 一株空间少动鞘氨醇单胞菌lct-s10-1
Zavarzina et al. Isachenkonia alkalipeptolytica gen. nov. sp. nov., a new anaerobic, alkaliphilic proteolytic bacterium capable of reducing Fe (III) and sulfur
Boxberger et al. Draft genome and description of Chryseobacterium manosquense strain Marseille-Q2069T sp. nov., a new bacterium isolated from human healthy skin

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20170111