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Rapid and efficient tobacco hairy root induction and propagation method

A hairy root and tobacco technology, applied in the field of tobacco hairy root induction and propagation, can solve the problems of high cost, demand, unfavorable research and production of sterile seedlings, and achieve convenient material collection, fast induction speed, high-efficiency induction and multiplication effect

Pending Publication Date: 2022-07-22
CHINA TOBACCO ZHEJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the relevant literature reports mostly use aseptic vaccines for treatment, the cost of aseptic vaccines is high, and the requirements for bacterial contamination and tobacco seedling growth are high, and relevant equipment is required, which is not conducive to research and production, thus restricting hairy roots. induction efficiency
In recent years, relevant literature has reported that Agrobacterium rhizogenes (A4, R1000, R1601) can induce hairy roots in tobacco sterile seedlings, but there is no relevant literature reporting that soil-cultured seedlings can directly induce hairy roots.

Method used

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  • Rapid and efficient tobacco hairy root induction and propagation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Infect the tobacco explants of soil cultured seedlings with wild-type A4 Agrobacterium rhizogenes infection solution.

[0039] Specifically, the explants of 4-week-old tobacco soil cultured seedlings were cut into leaves of 1 × 1 cm, that is, the leaves of tobacco soil cultured seedlings were added to the invasion dye solution for 5 minutes. It should be noted that the invasion process The dye solution was centrifuged with 50 mL of Agrobacterium rhizogenes with an OD value (600) of 0.8, and resuspended with an equal volume of MS liquid.

[0040] Step 2: In this example, under the condition of 25°C, the infected explants were inoculated on the co-cultivation medium for 48 hours in the dark. The co-culture medium was MS medium, and the dark culture was carried out After 48 h, at this point, the explants differentiated to form hairy roots.

[0041] Step 3: Transfer the dark-cultured explants to the hairy root induction medium for induction culture, cut off 3 cm of...

Embodiment 2

[0045] Step 1: Infect the tobacco explants of soil cultured seedlings with wild-type R1000 Agrobacterium rhizogenes infection solution.

[0046] Specifically, the explants of 4-week-old tobacco soil cultured seedlings were cut into leaves of 1 × 1 cm, that is, the leaves of tobacco soil cultured seedlings were added to the invasion dye solution for 10 minutes. It should be noted that the invasion process The dye solution was centrifuged with 50 mL of Agrobacterium rhizogenes with an OD value (600) of 0.8, and resuspended with an equal volume of MS liquid.

[0047] Step 2: In this example, under the condition of 25°C, the infected explants were inoculated on the co-cultivation medium for 24 hours in dark, and the co-culture medium was MS medium, and the dark culture was carried out 24 years later, at this point, the explants differentiated to form hairy roots.

[0048] Step 3: Transfer the dark cultured explants to the hairy root induction medium for induction culture, cut off...

Embodiment 3

[0052] Step 1: Infect the tobacco explants of soil cultured seedlings with wild-type R1601 Agrobacterium rhizogenes infection solution.

[0053] Specifically, the explants of 4-week-old tobacco soil cultured seedlings were cut into leaves of 1 × 1 cm, that is, the leaves of tobacco soil cultured seedlings were added to the invasion dye solution for 10 minutes. It should be noted that the invasion process The dye solution was centrifuged with 50 mL of Agrobacterium rhizogenes with an OD value (600) of 0.8, and resuspended with an equal volume of MS liquid.

[0054] Step 2: In this example, under the condition of 25°C, the infected explants were inoculated on the co-cultivation medium for 48 hours in the dark. The co-culture medium was MS medium, and the dark culture was carried out After 48 h, at this point, the explants differentiated to form hairy roots.

[0055] Step 3: Transfer the dark-cultured explants to the hairy root induction medium for induction culture, cut off 2-3...

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Abstract

The invention discloses a rapid and efficient tobacco hairy root induction and propagation method which comprises the following steps: infecting an explant of a tobacco soil culture seedling with an activated agrobacterium rhizogenes infection solution, inoculating the infected explant on a co-culture medium, and carrying out dark culture for 24-48 hours, and transferring the explant subjected to dark culture to a rooting induction culture medium for induction culture, and carrying out subculture and multiplication culture on hairy roots generated by the induction culture, so as to obtain a large number of tobacco hairy roots. The method for directly inducing the hairy roots of the soil culture seedlings is suitable for inducing the hairy roots of various tobacco varieties, has the advantages of being convenient in material taking, high in induction speed, stable in heredity, capable of saving cost and the like, and realizes rapid and efficient induction and propagation of the hairy roots of the tobacco of the soil culture seedlings by directly inducing the tobacco soil culture seedlings.

Description

technical field [0001] The invention relates to a fast and efficient method for inducing and multiplying hairy roots of tobacco, belonging to the field of agricultural application biotechnology. Background technique [0002] The root system of tobacco is the basis for the growth and quality of tobacco. At present, the research on the root system of tobacco is in the ascendant, but the root system of tobacco cannot be directly understood in the soil. How to study the root system intuitively is a difficulty. As an artificially induced bioreactor, tobacco hairy roots can intuitively observe the growth of roots and directly study the root system. [0003] At present, the induction of tobacco hairy roots is mostly in the form of sterile seedlings. Among them, the relevant literature reports mostly use sterile seedlings for treatment, the cost of sterile seedlings is high, and the requirements for bacterial contamination and the growth of tobacco seedlings are very high, and rele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H4/00
CPCA01H4/008A01H4/002
Inventor 程昌合任志广张勇刚刘化冰项波卡刘建国张晓兵夏琛
Owner CHINA TOBACCO ZHEJIANG IND