A kind of Pseudomonas fluorescens in peanut rhizosphere and its application

A technology of Pseudomonas fluorescens and a bacterial agent, which is applied in the fields of microbiology and plant growth-promoting bacteria, and achieves the effects of good application prospects, enhanced salt stress resistance, and improved peanut biomass and yield.
CN109666608BActive Publication Date: 2021-10-01CHINA AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA AGRI UNIV
Publication Date
2021-10-01

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Abstract

The invention discloses a peanut rhizosphere Pseudomonas fluorescens and application thereof. The Pseudomonas fluorescens is named 1502IPR‑01, and the preservation number is CGMCC NO.16925. The Pseudomonas fluorescens 1502IPR-01 in the peanut rhizosphere of the present invention is a Gram-negative bacterium without spores, has a strong ability to produce siderophores, and the produced siderophores have better ability to chelate insoluble iron. Pseudomonas fluorescens 1502IPR‑01 and its bacterial agent have high siderophore production capacity, significantly increase the content of active iron in peanut new leaves, improve peanut iron nutrition, produce auxin to promote lateral root development, improve root architecture, and promote nitrogen and phosphorus in plants. The increase of potassium content reduces the sodium content of plants, improves resistance to salt stress, significantly promotes peanut growth, improves peanut biomass and yield and other growth-promoting functions. The Pseudomonas fluorescens 1502IPR-01 of the present invention has a positive effect on plant growth promotion.
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Description

technical field

[0001] The invention belongs to the field of microbiology and plant growth-promoting bacteria, and specifically relates to a kind of high-yield siderophore, high iron-dissolving ability, producing auxin, promoting lateral root growth, improving plant iron nutrition and nitrogen, phosphorus and potassium element nutrition, and enhancing plant growth. Salt stress tolerance and plant growth promotion Pseudomonas fluorescens and its application. Background technique

[0002] Iron is one of the essential elements for various organisms, and it participates in important metabolic activities in organisms. Physiological metabolic processes such as photosynthesis, respiration, and DNA synthesis of plants all require the participation of elemental iron. However, most of the iron in the soil exists in the form of insoluble iron oxide, and its bioavailability is low, especially on calcareous soils, the high soil pH results in extremely low soluble iron content, so plants...

Claims

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