CN-121975679-A - Growth-promoting bacterium YSH722 and application thereof

Abstract

The invention discloses a growth-promoting bacterium YSH722 and application thereof, belonging to the technical field of microorganisms, wherein the YSH722 belongs to the genus Juniperus (Latin academy: jatrophihabitans sp.) and is preserved in China Center for Type Culture Collection (CCTCC) with the preservation number of CCTCC NO: M20251996 at the year 09 of 2025 and 10. YSH722 can increase the content of 2-picolinic acid secreted by plants, and 2-picolinic acid can form chelate with iron ions, so that the absorption of peach trees to iron ions in soil is enhanced, the fertilizer consumption is reduced, and finally, the purposes of increasing the yield and quality of peach fruits are achieved.

Inventors

• You Shuanghong
• ZHAO PING
• HAN GUOHUI
• WU ZHENG
• YAN ZHONGXI
• SHI WENJING
• PENG FANGFANG

Assignees

• 重庆市农业科学院

Dates

Publication Date

20260505

Application Date

20251231

Claims (10)

1. 1. The growth-promoting bacterium YSH722 is characterized in that the YSH722 belongs to the genus Jatropha (Latin academic name: jatrophihabitans sp.) and is preserved in China center for type culture Collection (preservation number: CCTCC NO: M20251996) at the year 2025 and the month 09.
2. 2. Use of the growth-promoting bacterium YSH722 of claim 1 for promoting plant rhizosphere nutrient absorption.
3. 3. Use of the growth-promoting bacterium YSH722 according to claim 1 for promoting plant growth and improving yield and quality.
4. 4. Use of the growth-promoting bacterium YSH722 according to claim 1 for increasing the 2-picolinic acid content in plants.
5. 5. Use of the growth-promoting bacterium YSH722 according to claim 1 for promoting iron ion absorption by plants.
6. 6. The use according to any one of claims 2 to 5, wherein the plant is peach or tobacco.
7. 7. A fertilizer comprising the growth-promoting bacteria YSH722 of claim 1 and/or a microbial preparation comprising the growth-promoting bacteria YSH 722.
8. 8. Use of a fertilizer according to claim 7 for promoting plant growth, and/or improving plant quality and yield, and/or increasing 2-picolinic acid content in plants, and/or promoting iron ion uptake.
9. 9. A planting method for promoting growth and yield of fruit trees, the method comprising the following operations: After fruit tree planting, applying the growth-promoting bacteria YSH722 according to claim 1 or applying the fertilizer according to claim 7.
10. 10. The planting method according to claim 9, wherein the fruit tree rhizosphere soil is covered with a reflective film after applying the growth-promoting bacteria YSH722 or fertilizer, and then is managed conventionally in an orchard.

Description

Growth-promoting bacterium YSH722 and application thereof Technical Field The invention relates to the technical field of microorganisms, in particular to a growth-promoting bacterium YSH722 and a specific application thereof. Background Commercial peach (Prunus persica) is a globally important commercial fruit tree crop. In recent years, with sustainable production of edible peaches, consumer demand for high quality peach products has increased significantly. Thus, one of the biggest challenges facing sustainable production of peaches is how to improve the economic benefits of cultivating peaches, in particular to improve the yield and quality of peach fruits. One solution to the above problems is to apply plastic film coverage, particularly reflective film coverage (RFM), in orchards, which can continuously improve pest management, resource utilization efficiency and ecological sustainability. In addition, the light film coverage is different from the common mulching film, the fruit illumination is supplemented by reflection, and the net photosynthetic rate of plants can be improved. Although the reflective film coating technique (RFM) has shown the potential to promote peach nutrition as well as fruit quality and yield, the exact mechanical link between recruiting active rhizosphere bacterial communities, rhizosphere soil metabolites, and promoting root nutrient absorption enhancement based on RFM remains unclear. The rhizosphere, the area around the root system, contains a large number of organic secretions of plant origin as nutrient reservoirs and signal molecules for recruitment of microorganisms. Rhizosphere microbial communities, known as "rhizosphere groups," play a key role in improving fruit tree yield and quality, as they are able to synthesize plant growth regulators, promote dissolution of plant nutrients to facilitate absorption, and induce resistance to pests and pathogens. Based on this, although a great deal of research has reported that the reflective film coverage can improve the yield and quality of fruits such as peaches, apples, blueberries and the like, the mechanism of the reflective film coverage and the interaction network of the rhizosphere microbiome of the peaches is not clear, so that it is necessary to find a new strain for researching the correlation among rhizosphere microbiome groups, rhizosphere soil metabolites and physicochemical properties and establish a reflective film coverage system, rhizosphere soil metabolites, soil nutrients and the mechanism among the interaction network of the underground root system and microbiome. Disclosure of Invention In view of the above, the present invention aims to provide a fungus YSH722 of genus leprosy and its application. In order to solve the technical problems, the technical scheme of the invention is as follows: A growth-promoting bacterium YSH722, the growth-promoting bacterium YSH722 belongs to the genus Juniperus (Latin academic name: jatrophihabitans sp.) and is preserved in China center for type culture collection (CCTCC NO: M20251996) at the year 2025 and the month 09. Further, the application of the growth-promoting bacteria YSH722 in promoting the absorption of plant rhizosphere nutrients. Further, the application of the growth-promoting bacterium YSH722 in promoting the growth and the yield of plants. Further, the application of the growth-promoting bacterium YSH722 in improving the 2-picolinic acid content in plants. Further, the application of the growth-promoting bacterium YSH722 in promoting the iron ion absorption of plants. Further, the plant is peach or tobacco. A fertilizer comprising the growth-promoting bacteria YSH722 of claim 1 and/or a microbial preparation comprising the growth-promoting bacteria YSH 722. Further, the use of the fertilizer for promoting plant growth, and/or improving plant quality and yield, and/or increasing 2-picolinic acid content in plants, and/or promoting iron ion absorption. A planting method for promoting the growth and yield of fruit trees, which comprises the following operation of applying the growth-promoting bacterium YSH722 as claimed in claim 1 or applying the fertilizer as claimed in claim 7 after the fruit trees are planted. Further, after YSH722 bacteria or fertilizer is applied, the reflective film is used for covering the rhizosphere soil of the fruit trees, and then the fruit trees are managed according to the conventional orchard. The beneficial effects are that: According to the invention, a novel growth-promoting bacterium YSH722 is found in the rhizosphere of the peach tree covered by the reflective film, the bacterium can improve the yield and quality of peach fruits, meanwhile, the strain is found to promote the peach tree to secrete 2-picolinic acid content, and the 2-picolinic acid can form chelate with iron ions, so that the absorption of the peach tree to the iron ions in soil is enhanced, and the strain has application potential as an iron fertilizer. In a