AM Fungi Alleviate Soybean Continuous Cropping Obstacles by Regulating Root Phenylpropanoid Biosynthesis Pathway

Area of Science:

• Plant Science
• Soil Microbiology
• Biochemistry

Background:

• Continuous soybean cropping degrades soil quality and increases pathogen load.
• Arbuscular mycorrhizal fungi (AMF) are known to enhance plant stress resistance.

Purpose of the Study:

• To investigate the role of phenylpropanoid biosynthesis in soybean roots under continuous cropping stress.
• To elucidate AMF-mediated regulation of this pathway for stress mitigation.

Main Methods:

• Combined transcriptomic and proteomic analysis of soybean roots.
• Phenotypic assessments of soybean growth and vitality.
• Evaluation of gene and protein expression related to phenylpropanoid biosynthesis.

Main Results:

• AMF inoculation improved soybean plant height, weight, soluble protein content, and root vitality.
• Continuous cropping suppressed certain phenylpropanoid biosynthesis genes and proteins.
• AMF inoculation upregulated key genes and proteins in this pathway, alleviating stress.

Conclusions:

• AMF mitigates continuous cropping stress by enhancing phenylpropanoid biosynthesis in soybean roots.
• This provides insights for sustainable soybean production practices.