CN101658139B - Direct regeneration method of leaf discs of barbadosnut - Google Patents

Direct regeneration method of leaf discs of barbadosnut Download PDF

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CN101658139B
CN101658139B CN2009103078134A CN200910307813A CN101658139B CN 101658139 B CN101658139 B CN 101658139B CN 2009103078134 A CN2009103078134 A CN 2009103078134A CN 200910307813 A CN200910307813 A CN 200910307813A CN 101658139 B CN101658139 B CN 101658139B
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illumination
culture
barbadosnut
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iba
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CN101658139A (en
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陈介南
卢孟柱
李玲
刘伯斌
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Central South University of Forestry and Technology
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Central South University of Forestry and Technology
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Abstract

The invention discloses a direct regeneration method of leaf discs of barbadosnut. The direct regeneration method comprises the following steps: leaf blades of annual barbadosnut are taken as explants and inoculated in a culture medium to directly induce adventitious buds; the culture medium is MS minimal medium which is added with 30g-L<-1> of sucrose, 4-8g L<-1> of agar, 0.2-2.0mg L<-1> of TDZ, 0.1-1.5mg L<-1> of IBA, 0.05-3mg L<-1> of BA and 0.5-8mg L<-1> of sodium nitroprusside; a culture mode: first dark culture is performed for 10-14d and then culture is performed under light for 14-16d; and finally extending culture is performed on the induced adventitious buds, and then the induced adventitious buds are transplanted after rooting culture, thus inductivity of the adventitious buds is up to 88%. The invention aims at providing an efficient regeneration method of the leaf discs of the barbadosnut in terms of genetic modification and tissue culture of the barbadosnut. The direct regeneration method has advantages of laying a foundation for realizing gene transformation and rapid propagation of the barbadosnut, and promoting industry development of the barbadosnut.

Description

The direct regeneration method of leaf discs of a kind of Jatropha curcas
Technical field
The present invention relates to the technical field of Plant Tissue Breeding, be specifically related to the direct regeneration method of leaf discs of a kind of Jatropha curcas.
Background technology
Jatropha curcas (Jatropha curcas.L.) is to be grown in the torrid zone and semi-tropical machaka or dungarunga.Jatropha curcas seed oil content height can reach 40%-60%, surpasses common oil crop such as rape and soybean, and Jatropha curcas oil can be used for various diesel engines as biodiesel, is a kind of important energy plant.But the Jatropha curcas planting area is narrow at present, only is distributed in the Asia, the torrid zone and the subtropical zone in Africa and America, and China's natural distribution has 1.1 ten thousand hm approximately 2, mainly concentrate on Sichuan, Yunnan, Guizhou.And Jatropha curcas output is lower, and the leprosy woods of artificial planting only can produce the 100-300kg fruit for every mu at present, can process the 30-100kg biodiesel approximately.Narrow distribution and yield poorly and limited it and cultivate on a large scale and industrialization as energy-source plant.Can improve resistance, the output of Jatropha curcas by engineered method, proterties such as oil, thus enlarge the Jatropha curcas distribution, increase solid output and change jatropha curcas seed oil content and oil.And fast numerous needs of genetic improvement of Jatropha curcas and improved seeds are set up leaf dish regenerating system efficiently.
Summary of the invention
The present invention is intended to provide leprosy leaf dish highly efficient regeneration method for the improvement of genes of Jatropha curcas and tissue culture.For realizing the genetic transformation of Jatropha curcas, breeding lays the foundation fast, advances the industry development of Jatropha curcas.
In order to achieve the above object, Jatropha curcas direct regeneration method of leaf discs of the present invention comprises:
A, choose in the greenhouse the 2nd, 3,4,5 of annual Jatropha curcas and launch blade, carry out being cut into 5-10mm after surface sterilization is handled as explant 2Size;
B, explant leaf dish proximal ends is inoculated in the medium directly evoking adventive bud up; Medium adds 30gL for the MS minimal medium -1Sucrose, 4-8gL -1Agar, 0.2-2.0mgL -1TDZ, 0.1-1.5mgL -1IBA, 0.05-3mgL -1BA, 0.5-8mgL -1Sodium nitroprussiate; Training method: the dark earlier 10-14d that cultivates, be converted to then under the illumination condition and cultivate, temperature is 25 ± 2 ℃, intensity of illumination is 45-55 μ molm -2s -1, illumination 16hd -1, cultivate 1416d;
C, indefinite bud is prolonged cultivation, carry out again transplanting after the culture of rootage.
Preferred the 4th was launched blade as explant during A went on foot; The MS minimal medium preferably added 30gL during B went on foot -1Sucrose, 5gL -1Agar, 1mgL -1TDZ, 0.5mgL -1IBA, 1.5mgL -1BA, 2mgL -1Sodium nitroprussiate; Training method: the dark earlier 10-14d that cultivates, be converted to then under the illumination condition and cultivate, temperature is 25 ℃, intensity of illumination is 50 μ molm -2s -1, illumination 16hd -1, cultivated for 2 weeks.
Disinfecting described in the described A step is the NaClO sterilization explant 5-30min that adopts 15-25%.
Prolonging the used medium of cultivation described in the described C step is that the MS minimal medium adds 30gL -1Sucrose, 4-8gL -1Agar, 0.05-0.8mgL -1BA and 0.01-0.02mgL -1IBA; Training method: illumination cultivation 18-22 days, temperature was 23 ± 2 ℃, and intensity of illumination is 45-55 μ molm -2s -1, illumination 16hd -1
The used medium of culture of rootage described in the described C step is to add 30gL in the MS minimal medium -1Sucrose, 4-8gL -1Agar and 0.08-0.5mgL -1IBA.
The present invention has following outstanding advantage: one, and adventitious shoot regeneration speed is fast, and the leaf dish is induced through 4 times in week, promptly renewablely goes out a large amount of indefinite buds; Its two, the regeneration frequency height through inducing of 4 times in week, has 88% leaf dish to induce indefinite bud, is significantly higher than contrast, and is far above the highest level of being reported in the world, as shown in table 1; Its three, can promote the development of Jatropha curcas genetic transformation, regeneration frequency is the basis of Jatropha curcas genetic transformation efficiently; Its four, Jatropha curcas is developed as biomass energy, is of value to alleviating China and even energy energy crisis; Its five, the inventive method is easy to implement, is convenient to promote.
The present invention adjusts hormone in medium kind and hormone concentration, has particularly increased the concentration of TDZ, has also increased new plant hormone sodium nitroprussiate.TDZ is a kind of high activity class cytokinin, can obtain more desirable effect with being used of other hormones.Sodium nitroprussiate is nitric oxide donors (NO), and nitric oxide can be regulated growth and development of plant as a kind of messenger molecule, and NO also interacts with hormone influences the growth of plant.At first, the generation of basic element of cell division energy rapid stimulation NO, once more, NO can promote the formation of division of blade protoplasm somatocyte and somatic embryo again under the situation that growth hormone exists, and NO and growth hormone the interact dedifferentiation of common regulation and control plant cell and atomization again, so NO plays " bridge " effect between the basic element of cell division and growth hormone, so can promote the differentiation of indefinite bud.Changed the explant selection mode in addition, the young leaflet tablet of the different development stage by the Jatropha curcas of directly taking to cultivate in the greenhouse, increase the source of explant and obtained the maturity of the blade of suitable evoking adventive bud, use blade than last hypocotyl and cotyledon stable explant source to be arranged and can keep the proterties of choiceness as explant, and operate easier, easy to implement.
Table 1 is the Jatropha curcas leaf plants regeneration techniques of report at present
Figure G200910307813420090927D000021
[1] Lu Weida, Wei Qin, Tang Lin, etc. inducing and breeding [J] fast of Jatropha curcas callus. use and the environmental organism journal 2003,9 (2): 127-130.
[2]Deore?AC,Johnson?TS.High-frequency?plant?regeneration?from?leaf-disccultures?of?Jatropha?curcas?L.:an?important?biodiesel?plant[J].Plant?BiotechnolRep,2008,2(1):7-11.
[3]Timir?BJ,Mukherjee?P,Datta?MM,Somatic?embryogenesis?in?Jatropha?curcasLinn.,an?important?biofuel?plant[J].Plant?Biotechnol?Rep,2007,1(3):135-140.
Embodiment
Explant selection in following examples and the Comparative Examples, culture medium preparation and training method etc. is carried out according to table 2.
1, the Jatropha curcas explant is chosen and processing such as surface sterilization:
Choose in the greenhouse annual Jatropha curcas and launch blade, adopt 20% NaClO sterilization 20min, be cut into size with the bacterium blade that went out and be about 9mm as explant 2
2, place medium directly to induce indefinite bud explant, step comprises:
A, culture medium preparation: medium be the MS minimal medium according to table 2 adding ingredient, 121 ℃, sterilization 15min adds sodium nitroprussiate when treating that medium is cooled to 50 ℃;
B, training method: leaf dish proximal ends is inoculated in the medium up, secretly cultivates earlier, be converted to then under the illumination condition and cultivate, temperature is 25 ℃, and intensity of illumination is 50 μ molm -2s -1, illumination 16hd -1Cultivate.
3, the indefinite bud that induces is prolonged cultivation:
A, culture medium preparation: medium is that minimal medium adds 30gL -1Sucrose and 5gL -1Agar 0.1-0.5mgL -1BA, 0.01mgL -1IBA;
B, training method: illumination cultivation 20 days, temperature are 25 ℃, and intensity of illumination is 50 μ molm -2s -1, illumination 16hd -1
4, the culture of rootage of indefinite bud:
Medium adds 30gL for the MS minimal medium -1Sucrose and 5gL -1Agar and 0.1-0.5mgL -1IBA.
5, the transplanting of the indefinite bud of taking root:
The indefinite bud direct transplanting of taking root is to the greenhouse, and survival rate reaches 93%.
Table 2
Figure G200910307813420090927D000041
It is influential to inductivity that above embodiment and Comparative Examples have embodied the plant growth regulator of variable concentrations, different explants, different training methods etc., explanation has obviously improved adventitious bud induction frequency according to the inventive method, especially embodiment 2 has reached 88%, and the indefinite bud growth conditions that induces is good, can prolong and take root, exteriorly variation does not produce.
The present invention is not limited to concrete embodiment; so long as adopted tissue culture mode provided by the invention; medium component; condition of culture and mode of operation; without departing from the inventive concept of the premise; no matter adopt which kind of tissue culture mode, carry out which kind of equivalents and modification, all will fall within protection scope of the present invention.

Claims (5)

1. the direct renovation process of a leprosy leaf dish is characterized in that, comprising:
A, choose in the greenhouse the 2nd, 3,4,5 of annual Jatropha curcas and launch blade, carry out being cut into 5-10mm after surface sterilization is handled as explant 2Size;
B, explant leaf dish proximal ends is inoculated in the medium directly evoking adventive bud up; Medium adds 30gL for the MS minimal medium -1Sucrose, 4-8gL -1Agar, 0.5-1mgL -1TDZ, 0.5mgL -1IBA, 1.5mgL -1BA, 2-5mgL -1Sodium nitroprussiate; Training method: the dark earlier 10-14d that cultivates, be converted to then under the illumination condition and cultivate, temperature is 25 ± 2 ℃, intensity of illumination is 45-55 μ molm -2S -1, illumination 16hd -1, cultivate 14-16d;
C, indefinite bud is prolonged cultivation, carry out again transplanting after the culture of rootage.
2. method according to claim 1 is characterized in that, described A chooses the 4th and launches blade as explant in the step; B is MS minimal medium interpolation 30gL in the step -1Sucrose, 5gL -1Agar, 1mgL -1TDZ, 0.5mgL -1IBA, 1.5mgL -1BA, 2mgL -1Sodium nitroprussiate; Training method: the dark earlier 10-14d that cultivates, be converted to then under the illumination condition and cultivate, temperature is 25 ℃, intensity of illumination is 50 μ molm -2S -1, illumination 16hd -1, cultivated for 2 weeks.
3. method according to claim 1 is characterized in that, disinfecting described in the A step is the NaClO sterilization explant 5-30min that adopts 15-25%.
4. method according to claim 1 is characterized in that, prolonging the used medium of cultivation described in the C step is that the MS minimal medium adds 30gL -1Sucrose, 4-8gL -1Agar, 0.05~0.8mgL -1BA and 0.01-0.02mgL -1IBA; Training method: illumination cultivation 18-22 days, temperature was 23 ± 2 ℃, and intensity of illumination is 45-55 μ molm -2S -1, illumination 16hd -1
5. method according to claim 1 is characterized in that, the used medium of culture of rootage described in the C step is to add 30gL in the MS minimal medium -1Sucrose, 4-8gL -1Agar and 0.08~0.5mgL -1IBA.
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Cited By (1)

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CN104221851A (en) * 2013-06-07 2014-12-24 上海市园林科学研究所 Method for in-vitro culture and rapid propagation of gunnera manlcata l

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CN103430841B (en) * 2013-08-02 2014-11-12 华南农业大学 Method for promoting jatropha curcas explant to regenerate adventitious buds
CN113892432A (en) * 2021-11-22 2022-01-07 合肥师范学院 Method for directly regenerating barbadosnut leaf

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CN104221851A (en) * 2013-06-07 2014-12-24 上海市园林科学研究所 Method for in-vitro culture and rapid propagation of gunnera manlcata l

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