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Sex-Dependent Rhizosphere Microbial Dynamics and Function in Idesia polycarpa through Floral and Fruit Development
Zhi Li1,2,3, Qiupeng Yuan1,2,3, Shasha Wang1,2,3
1Henan Province Engineering Technology Research Center for Idesia, Zhengzhou 450046, China.
Microorganisms
|October 26, 2024
Summary
Male Idesia polycarpa plants show higher rhizosphere bacterial diversity than females at fruit maturity, indicating sex-specific microbial associations. This research aids cultivation and breeding strategies for this adaptable species.
Area of Science:
- Plant-Microbe Interactions
- Rhizosphere Microbiology
- Plant Sex Determination
Background:
- Male Idesia polycarpa exhibit greater environmental adaptability than females, but the underlying rhizosphere mechanisms are unknown.
- Understanding sex-specific root bacterial communities is crucial for optimizing cultivation and breeding.
- Rhizosphere processes significantly influence plant health and stress tolerance.
Purpose of the Study:
- To investigate sex-specific differences in rhizosphere bacterial community structure and function in Idesia polycarpa.
- To identify bacterial strains associated with plant sex at different developmental stages.
- To provide a theoretical basis for sex identification, breeding, and cultivation management.
Main Methods:
- Rhizosphere soil samples were collected from male and female Idesia polycarpa at flowering and fruit ripening stages.
- Bacterial diversity and community structure were analyzed using Illumina high-throughput sequencing.
- Nutrient content (TN, TC, AK) and soil physicochemical properties (pH) were measured.
Main Results:
- Nutrient content varied significantly between sexes and developmental stages.
- Rhizosphere bacterial diversity (Chao1, Shannon indexes) was higher in males than females at fruit maturity.
- Predominant bacterial phyla included Pseudomonadota, Acidobacteriota, and Actinomycetes, with shifts observed from flowering to fruit ripening.
- Significant correlations were found between pH, available potassium (AK), and bacterial communities, with metabolism as a key functional difference.
Conclusions:
- Sex-specific differences in rhizosphere bacterial communities exist in Idesia polycarpa, particularly at fruit maturity.
- These microbial differences are linked to nutrient availability and soil properties, influencing plant adaptability.
- Findings support targeted cultivation and breeding strategies for Idesia polycarpa based on sex-specific microbial associations.
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