A method for regulating the fungal community structure to reduce the damage to host plants by the pathogenic bacteria of the light blight

A technology of host plants and community structure, applied in the fields of botanical equipment and methods, plant growth regulators, plant growth regulators, etc.

Active Publication Date: 2022-07-22
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there has been no report on the biological control of reducing the damage of the pathogen of blight blight to host plants by regulating the structure of the host plant's endophytic microbial community

Method used

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  • A method for regulating the fungal community structure to reduce the damage to host plants by the pathogenic bacteria of the light blight
  • A method for regulating the fungal community structure to reduce the damage to host plants by the pathogenic bacteria of the light blight
  • A method for regulating the fungal community structure to reduce the damage to host plants by the pathogenic bacteria of the light blight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Regulation of pine dieback based on endophytic fungal community structure

[0032] (1) Host plant inoculation

[0033] Inoculate Jattaea taediosa, Aureobasidium pullulans or spray J.taediosa and A.pullulans fermentation broth on the red pine in the Kunyu Mountain inter-forest plot, and spray the fermentation broth directly on the shoots and branches to increase the relative abundance and inhibit the pine Growth and reproduction of S. sapinea.

[0034] (2) Cleaning and pruning of diseased branches

[0035] Remove the infected branches in time to prevent the further spread of pathogenic bacteria. For the vigorously growing stands, pruning or thinning should be adopted in a timely manner to "retain the good and remove the bad" to slow down the ineffective transpiration and enhance the tree vigor.

Embodiment 2

[0036] Example 2 Regulation of pine dieback based on endophytic fungal community structure

[0037] The specific method is the same as that in Example 1, except that the red pine in the Kunyu Mountain inter-forest plot was sprayed with antagonistic agents such as Orbiliarerectispora, Phaeothecoidea sp., Devriesia sp., Cryptococcus sp., Orbilia sp., etc. The above-mentioned fungi were mostly The pathogenic bacteria of common diseases can inhibit the growth of S. sapinea by means of antagonizing the above pathogenic bacteria.

Embodiment 3

[0038] Example 3 Regulation of pine dieback based on endophytic fungal community structure

[0039]The specific method is the same as that in Example 1, except that the red pine in the Kunyu Mountain inter-forest plot was inoculated with Jattaeataediosa, Aureobasidium pullulans or sprayed with J.taediosa, A.pullulans fermentation broth, and sprayed against Orbilia rectispora, Phaeothecoidea sp., Devriesia sp., Cryptococcus sp., Orbilia sp. and other bacteria antagonists, increase the relative abundance of J.taediosa, A.pullulans, and inhibit the growth of a variety of pathogenic bacteria.

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Abstract

The present invention discloses a fungal structure regulation method for reducing the damage of the pathogenic bacteria of sclerotiorum to host plants. The relative abundance of endophytic fungi that are negatively correlated with blight pathogens or decrease the relative abundance of endophytic fungi that are positively correlated with blight pathogens; or increase the relative abundance of endophytic fungi that are negatively correlated with blight pathogens while reducing the relative abundance of endophytic fungi that are positively associated with blight pathogens. By adjusting the endophytic fungal community structure of the red pine, the present invention transforms the fungal community into a structure unfavorable for the survival of the blight pathogenic bacteria, making it difficult for the pathogenic bacteria to proliferate and spread, effectively reducing the damage to the red pine forest, and maintaining and protecting the distribution area. ecosystem.

Description

technical field [0001] The invention relates to a method for preventing and treating pine blight, in particular to a method for reducing the damage of pine blight to host plants based on endophytic fungal community structure regulation, and belongs to the field of biological control of pine blight. Background technique [0002] Pine dieback is one of the most common and widely distributed important diseases on conifers in the world. The disease mainly manifests as terminal bud withered, dead needles, withered branches or clumps, etc., and can also cause trunk cankers on some hosts. , fat flow, necrosis, rhizome rot and wood blue turning, etc., young trees and large trees can be affected. The pine dieback disease has caused serious damage and heavy losses to the pine plantations in many countries in the world, and has caused widespread concern of forestry workers around the world. [0003] The damage caused by Sphaeropsis sapinea has the characteristics of wide incidence, se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/00A01N63/30A01P21/00
CPCA01G13/00
Inventor 梁军谢宪胡瑞瑞张星耀
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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