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A sweet story from Phytophthora-soybean interaction.
1National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China.
Trends in Microbiology
|September 28, 2023
Summary
Phytopathogenic microbes like Phytophthora sojae exploit host plants for nutrients. This study shows how Phytophthora sojae manipulates soybean trehalose 6-phosphate synthase 6 (GmTPS6) activity to boost its nutrient uptake.
Area of Science:
- Plant Pathology
- Molecular Plant-Microbe Interactions
- Biochemistry
Background:
- Phytopathogenic microbes require host plant nutrients for growth.
- Oomycete pathogens possess sophisticated mechanisms to acquire nutrients from hosts.
- Trehalose metabolism plays a role in plant-pathogen interactions.
Purpose of the Study:
- To investigate the mechanism by which the oomycete Phytophthora sojae enhances nutrient acquisition from soybean.
- To identify specific pathogen factors involved in manipulating host metabolism.
Main Methods:
- Analysis of Phytophthora sojae effector proteins.
- Enzyme activity assays for soybean trehalose 6-phosphate synthase 6 (GmTPS6).
- Measurement of trehalose accumulation in infected soybean tissues.
Main Results:
- The Phytophthora sojae effector PsAvh413 was identified as a key factor.
- PsAvh413 upregulates the activity of soybean GmTPS6.
- This leads to increased trehalose accumulation in the host plant, facilitating pathogen nutrition.
Conclusions:
- Phytophthora sojae employs effector proteins to manipulate host metabolic pathways for nutritional advantage.
- Upregulation of GmTPS6 by PsAvh413 is a novel strategy for pathogen nutrient acquisition.
- Understanding these interactions can inform strategies for disease resistance in soybean.
