Research Progress of Soil Microorganisms in Response to Heavy Metals in Rice

Area of Science:

• Environmental microbiology
• Agricultural science
• Bioremediation

Background:

• Heavy metal soil pollution poses risks to food safety and human health.
• Microbial strategies to reduce heavy metal bioavailability in crops are gaining attention.

Purpose of the Study:

• To review the mechanisms and roles of soil microorganisms in mitigating heavy metal stress in rice.
• To identify current research gaps and future directions for microbial remediation in agriculture.

Main Methods:

• Literature review of studies on soil microorganisms and heavy metal stress in rice.
• Analysis of microbial mechanisms including adsorption, growth promotion, and soil property modification.

Main Results:

• Microorganisms, primarily bacteria and fungi, alleviate heavy metal stress through various mechanisms.
• These mechanisms include direct metal adsorption, secretion of plant growth-promoting substances, soil property alteration, and enhanced plant antioxidant capacity.

Conclusions:

• Soil microorganisms show significant potential for bioremediation of heavy metal-contaminated soils in agriculture.
• Future research should focus on multi-strain approaches, broader strain screening, pathogenicity evaluation, and field trials for effective microbial remediation technology.