CN1836499A - Cultivation method for highly effective plant tissue differentiation and regeneration - Google Patents
Cultivation method for highly effective plant tissue differentiation and regeneration Download PDFInfo
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- CN1836499A CN1836499A CN 200510059187 CN200510059187A CN1836499A CN 1836499 A CN1836499 A CN 1836499A CN 200510059187 CN200510059187 CN 200510059187 CN 200510059187 A CN200510059187 A CN 200510059187A CN 1836499 A CN1836499 A CN 1836499A
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- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
The present invention relates to tissue culture method with high efficiency induction of plant tissue regeneration, and features that during plant callus induction and differentiation, betaine aldehyde is added into the culture medium to raise the differentiation and regeneration rate of callus bud, shorten the regeneration bud obtaining period and raise the growth speed of the regenerated bud effectively. The said method can raise the regeneration rate of callus by over 1 time, move up the germination time by 5 days and shorten the culture period from the inoculation of explant to transformation to the rooting culture medium by 10-15 days. The present invention also relates to the callus or contagious bud obtained by means of the said method as well as plant obtained through differentiation of the callus or contagious bud.
Description
Technical field:
The present invention relates to method for plant tissue culture.
Background technology:
Tissue culture technique refers to utilize the cultivation of synthetic medium to plant tissue under aseptic condition.Tissue culture technique both can be genetic engineering desirable acceptor material was provided, and can be conventional plant improvement program again new means are provided, more, faster, better create new varieties, in agricultural, have purposes widely; It is the indispensable part of transgenic technology; Can breed fast important and famous and precious plant variety; Important Practical significance etc. is arranged in the crop detoxification.
Conventional tissue culture is to comprise the various hormones of interpolation on the minimal medium basis of the necessary nutrient component of plant growing, utilize the totipotency of plant cell to induce its dedifferentiation to form callus, differentiate indefinite bud then, last evoking adventive bud is taken root, and forms whole plant.At the different times of whole incubation, promote the plant regeneration process and optimize plant growth state by kind, concentration and the proportioning of adjusting hormone.
In the tissue culture procedures of routine, the effect that can adopt adjusting to produce differentiation as the cytokinin and the concentration ratio between the growth hormone of plant hormone, even the differentiation that produces, the frequency of its differentiation is also lower, need set up more effective method and strengthen and induce differentiation capability.
Though utilize at present tissue culture technique in many plant species successful foundation the Regeneration in Vitro system, but because the restriction of species difference and condition of culture, the differentiation regeneration rate of a lot of plants is not high, reproduction speed is slow, can't satisfy the needs of actual production and research, therefore, improve present tissue culture technique, inducing, breaking up especially in more plants at woody plant, making it reach higher differentiation regeneration rate and reproduction speed, is very crucial.
Summary of the invention:
The inventor has worked out the method that the common method therefor of a kind of ratio more effectively improves the differentiation regeneration rate of plant leaf blade in actual mechanical process.That is, the present invention adds betain precursor---betaine aldehyde chloride (molecular formula is seen Fig. 1) in medium, can increase the viability of cell, has shortened callus and has sprouted the time, has strengthened the bud differentiation rate of callus, thereby improves its differentiation regeneration rate.Known betain physiological function has osmotic adjustment, protection antioxidase and photosynthesis relevant enzyme, stabilized cell plasma structure, eliminates the NH that produces when coercing
3Poison and as the supply of the methyl in biosynthesis agent etc. [1,2,3], and plant can strengthen anti-salt by root absorption external source betain or by gene engineering importing betain route of synthesis, the ability [4 of low temperature, 5,6,7], yet most of plant leaf blades can not directly absorb betain, but can directly absorb betain precursor---betaine aldehyde chloride, therefore, the blade that contains the plant of betain metabolic pathway can directly absorb the betaine aldehyde chloride in the medium in tissue culture procedures, and be translated into betain, in born of the same parents, play corresponding physiological action, thereby show as the enhancing of differentiation regeneration capacity.
Feature of the present invention is to add betaine aldehyde chloride in the plant tissue differential medium, and plant tissue is placed media surface, breaks up, and changes the MS minimal medium after sprouting over to and takes root, and obtains regeneration plant.The present invention can make plant tissue break up in 20~25 days to sprout, and make the differentiation regeneration rate bring up to 51.6% by 19.4%, and average bud is tall and big in 1cm in 30 days, and comparison is above according to doubling.On differentiation speed, add betaine aldehyde chloride and can compare according to sprouting in 5 days in advance; Before changing root media over to from callus induction and differentiation culture to regeneration bud, can shorten 10-15 days tissue culture time.
Particularly, one aspect of the invention provides a kind of cultural method of plant tissue differentiation and regeneration, it is characterized in that, introduces betaine aldehyde chloride in histocyte.
On the other hand, according to method of the present invention, the concentration of use therein betaine aldehyde chloride is 4~10mM, preferred 5mM.
On the other hand, according to method of the present invention, the method for wherein introducing this chemical reagent can be, but is not limited to directly add in medium, or adopts technology such as other method such as microinjection.
On the other hand, according to method of the present invention, the medium that wherein is used for tissue culture comprises, but be not limited to the conventional known medium that is used for tissue culture, as Murashige and Skoog medium, Linsmaicr and Skoog medium, White medium, Gamborg B-5 medium, Nitsch medium, Heller medium, ER medium, N6 medium etc., it can be liquid nutrient medium or the solid culture medium that contains gel, described gel is agar, Gelrite or the agarose of 0.1%-1%, or the 1%-8% carragheen.
On the other hand, according to method of the present invention, the plant culture tissue that is adopted comprises the tissue by cotyledon, hypocotyl, seedling point, stem, leaf, root or other tissue preparation of cutting.These tissue are used after can using clorox, mercuric chloride or alcohol sterilization usually.If adopt the plant of aseptic culture, above-mentioned sterilizing program can be ignored.In addition, comprise and adopt known method that tissue is carried out callus, the undifferentiated amorphous cell that tissue culture obtained.
On the other hand, according to method of the present invention, the training method that wherein is used for plant cell tissue's cultivation can be suspension culture mode or conventional solid culture mode.
On the other hand, the suitable plant of method of the present invention is selected from the group of being made up of all plants of energy metabolism betaine aldehyde chlorides such as lettuce, paddy rice, wheat, corn, cotton, soybean, rape, willow, barley, jowar, spinach, beet, prunella asiatica.
Again on the one hand, the present invention relates to use the callus or the bud of growing thickly of method acquisition of the present invention, and by the callus or the plant that bud differentiated that grows thickly.
On the other hand, the invention still further relates to the application of the inventive method in Plant Tissue Breeding.
In the present invention, term " differentiation rate " refers to be sprouted a little or the explant number of bud accounts for the percentage of inoculating the explant number by callus differentiation; " bud ratio " refers to be accounted for by the explant number that the callus differentiation is sprouted the percentage of inoculation explant number.Timing statistics be all the inoculation explant after 23 days.
In the present invention, the MS minimal medium is Murashige and Skoog medium (MurashigeT, Skoog F, 1962, A revised medium for rapid growth and bioassay withtobacco tissue culture.Physiol.Plant.15:473-497) macroelement, trace element, molysite, organic principle, solid culture medium is the medium of the carragheen (glad through biological reagent company of section available from Beijing) of interpolation 7%.
Description of drawings
Fig. 1. the chemical molecular structural formula of betaine aldehyde chloride.
Fig. 2. the callus of Seoul leaf lettuce when adding betaine aldehyde chloride (5mM) situation of sprouting.
A. inoculate behind the explant 23 days; B. inoculate behind the explant 30 days.
Fig. 3. the regrowth that Seoul leaf lettuce is taken root.
Fig. 4. the callus of Seoul leaf lettuce when the not adding betaine aldehyde chloride situation of sprouting.
A. inoculate behind the explant 23 days; B. inoculate behind the explant 30 days.
Fig. 5. the callus bud ratio and the differentiation rate of Seoul leaf lettuce among reference examples and the embodiment 1.
Fig. 6: the callus of Seoul leaf lettuce when adding betaine aldehyde chloride (10mM) situation of sprouting.
A. inoculate behind the explant 23 days; B. inoculate behind the explant 30 days.
Embodiment
Describe the present invention in detail below by reaching embodiment with reference to the accompanying drawings.Those of ordinary skill in the art can be understood that embodiments of the invention only are for purposes of illustration, and it should not be interpreted as limitation of the present invention by any way.
The tissue culture of the leaf regeneration plant of embodiment 1. Seoul leaf lettuce
1. Seoul leaf lettuce seed (available from the beautiful The Earth S. A. in Beijing) was soaked 5 minutes with mercuric chloride, receive on the MS solid culture medium, 24 ℃, illumination 12h/d cultivates, and back successive transfer culture on the MS solid culture medium germinates.
2. get young tender lettuce true leaf, leaf footpath 2-3cm, be cut into the square (explant) of 1cm * 1cm, it is the callus of induce and differentiation solid culture medium (callus of induce and differential medium: MS minimal medium+IAA (Sigma company) 1.0mg/L+6-BA (Sigma company) 0.2mg/L, pH is 5.8) of 5mM that the back side upwards places betaine aldehyde chloride (available from U.S. DNA Polymerase Technology company) concentration.
3.24 ℃, illumination 12h/d cultivates.
4.11 it back explant periphery begins to grow callus, begins differentiation about 20 days and sprouts a little or sprout, left and right sides bud was up to arriving 1cm left and right sides (see figure 2) in 30 days.
5. treat that explant sprouts and bud is tall and big and carry out culture of rootage in changing over to behind the 1.5cm on the MS solid-based basal culture medium.
6.24 ℃, illumination 12h/d cultivates after about 10 days, and regrowth grows the root (see figure 3).
Reference examples 1.The tissue culture of the leaf regeneration plant of Li Seoul leaf lettuce in contrast
Except in callus of induce and differential medium, not adding betaine aldehyde chloride, carry out the tissue culture of the leaf regeneration plant of Seoul leaf lettuce in the mode identical with embodiment 1.To make the explant among reference examples and the embodiment reduce individual difference from the leaf piece mixing of different blades when wherein getting explant.Referring to Fig. 4.
In embodiment 1, cultivate and began to produce callus in 11 days, to cultivate and add after 23 days that bud ratio reaches 51.6% in the 5mM betaine aldehyde chloride medium, differentiation rate reaches 83.9%.It is tall and big in equaling 1cm to cultivate 30 days average buds, and changing root media over to can take root; And the quantity of reference examples callus same period growth significantly is less than embodiment 1, and the same period, bud ratio 19.4%, and differentiation rate 41.9% is cultivated 30 days high not enough 1cm of average bud, the (see figure 5) of still can not taking root.
Embodiment 2. variable concentrations betaine aldehyde chlorides are to the influence of plant tissue differentiation and regeneration
The betaine aldehyde chloride concentration of adding in callus of induce and differential medium is 4,6,10mM, carry out the tissue culture of the leaf regeneration plant of Seoul leaf lettuce in the mode identical with embodiment 1 and reference examples 1, the differentiation regeneration of promotion lettuce that all can be in various degree, differentiation rate and regeneration rate all are higher than reference examples, but be lower than embodiment 1 (seeing Fig. 6, is example with 10mM, and all the other are similar), therefore, 5mM is the optimum concentration that betaine aldehyde chloride promotes lettuce blade differentiation regeneration.
List of references:
1. Bai Baozhang, Ma Jingyong etc., the relation of betain and plant resistance to environment stress.Jilin Agriculture University's journal, 1993,15 (4): 99~102.
2. auspicious, Zhu Zhiqing of Jia Geng etc., betain and plant salt tolerance gene engineering.BULLETIN OF BOTANY Vol., 2002,19 (3): 272~279.
3. the fragrant plum in river, Huang Minren etc., plant betain route of synthesis and gene engineering progress.Chinese biological engineering magazine, 2002,22 (4): 49~56.
4. living, gorgeous monarch of clothing of Zhao Bo etc., the external source betain is to the improvement of wheat seedling growth under arid/salt stress and photosynthetic function.BULLETIN OF BOTANY Vol., 2001,18 (3): 378~380.
5. Yang Shuying, Zhang Jianxin etc., the external source betain is to the influence research of winter wheat drought resistance physical signs.Northwest Botany Gazette 2000,20 (6): 1041~1045.
6. open scholar's merit, in Gao Ji third of the twelve Earthly Branches etc., the external source betain is to several the absorption with anti-adversity ability its related substances and steel potassium and the influences of transportation in the wheat seedling body under the salt stress.Plant Physiology Communications, 2000,36 (1): 23~26.
7. open scholar's merit, Gao Ji third of the twelve Earthly Branches etc., betain is coerced down the influence of wheat cell protective enzyme activity to NaCl.BULLETIN OF BOTANY Vol., 1999,16 (4): 429~432.
Claims (12)
1. the cultural method of a plant tissue differentiation and regeneration, described method comprises: introduce betaine aldehyde chloride in the cell of described plant tissue, its concentration is 4-10mM; Cultivate described plant tissue.
2. according to the method for claim 1, the concentration that it is characterized in that described betaine aldehyde chloride is 5mM.
3. according to the method for claim 1, it is characterized in that described introducing betaine aldehyde chloride is to be undertaken by the mode of interpolation or microinjection in medium.
4. according to the method for claim 3, wherein said medium is selected from Murashige and Skoog medium, Linsmaicr and Skoog medium, the White medium, Gamborg B-5 medium, Nitsch medium, Heller medium, ER medium or N6 medium, and described medium is liquid nutrient medium or the solid culture medium that contains gel.
5. according to the method for claim 4, wherein said gel is agar, Gelrite or the agarose of 0.1%-1%, or the 1%-8% carragheen.
6. according to the process of claim 1 wherein that described plant tissue is the tissue by cotyledon, hypocotyl, seedling point, stem, leaf, root or other tissue preparation of cutting.
7. according to the process of claim 1 wherein that callus that described plant tissue cell obtains for the tissue of cultivating cotyledon, hypocotyl, seedling point, stem, leaf, root or other tissue preparation by cutting is at interior, undifferentiated amorphous cell.
8. according to the process of claim 1 wherein that the training method that is used for Plant Tissue Breeding is suspension culture mode or solid culture mode.
9. according to the process of claim 1 wherein that described plant is the plant of metabolism betaine aldehyde chloride.
10. according to the method for claim 9, wherein said plant is selected from lettuce, paddy rice, wheat, corn, cotton, soybean, rape, willow, barley, jowar, spinach, beet or prunella asiatica.
11. the callus or the bud of growing thickly that utilizes the method acquisition of claim 1, and by the described callus or the plant that bud differentiated that grows thickly.
12. the application of the method for claim 1 in Plant Tissue Breeding.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107347642A (en) * | 2017-07-26 | 2017-11-17 | 河南联源生物科技有限公司 | Bletilla pseudobulb cuts tissue culture culture medium and its tissue culture method |
CN107360969A (en) * | 2017-07-26 | 2017-11-21 | 河南联源生物科技有限公司 | Suitable for the culture medium and method of the wild Dendrobium flexicaule tissue culture of Mt. Funiushan In Henan Province |
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2005
- 2005-03-24 CN CNB2005100591873A patent/CN100411508C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107347642A (en) * | 2017-07-26 | 2017-11-17 | 河南联源生物科技有限公司 | Bletilla pseudobulb cuts tissue culture culture medium and its tissue culture method |
CN107360969A (en) * | 2017-07-26 | 2017-11-21 | 河南联源生物科技有限公司 | Suitable for the culture medium and method of the wild Dendrobium flexicaule tissue culture of Mt. Funiushan In Henan Province |
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