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Effectiveness of Rhizophagus intraradices and Acinetobacter calcoaceticus on soybean growth and thiram residues in soybean grains and rhizosphere soil
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Effectiveness of Rhizophagus intraradices and Acinetobacter calcoaceticus on soybean growth and thiram residues in soybean grains and rhizosphere soil
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Journal Article
Effectiveness of Rhizophagus intraradices and Acinetobacter calcoaceticus on soybean growth and thiram residues in soybean grains and rhizosphere soil
2025
Overview
Soybean root rot has a serious effect on soybean yield. Pesticides such as thiram are used to prevent soybean root rot, but thiram remains in the soil, which seriously threatens food safety and human health. Microbial fertilizers can effectively control root rot, promote crop growth, and degrade pesticide residues. This study aimed to evaluate the synergistic effects of arbuscular mycorrhizal fungi and phosphorus-solubilizing bacteria in a controlled environment, specifically investigating their potential for prevention and control of soybean root rot and pesticide degradation. In this pot-based study, we investigated the effects of Rhizophagus intraradices , Acinetobacter calcoaceticus , and thiram on the incidence of root rot, soybean biomass, the number of bacterial colonies in rhizosphere soil, and thiram residues in soybean grains and rhizosphere soil. The results showed that inoculation with R. intraradices and A. calcoaceticus significantly increased arbuscular mycorrhizal fungi spore density (445%), arbuscular mycorrhizal fungi infection rate (103%), soybean biomass such as fresh weights (59%), nodule number (237%), and total bacterial colony number in the rhizosphere soil of soybean plants (133%) and presented the lowest incidence of root rot (20%) ( P < 0.05), compared with the control group. A single inoculant significantly reduced the residual amount of thiram in soybean grains and rhizosphere soil, and a mixed inoculation ( R. intraradices and A. calcoaceticus ) produced the most significant reduction, relative to the group sprayed with only thiram, thiram residues were reduced by 73% and 69%, respectively ( P < 0.05). These findings provide a foundation for the biological control of soybean root rot and the degradation of pesticides and contribute to the sustainable development of agricultural ecosystems.
Publisher
PeerJ. Ltd,PeerJ, Inc,PeerJ Inc
Subject
/ Acinetobacter calcoaceticus - physiology
/ Bacteria
/ Biomass
/ Colonies
/ Food
/ Fungi
/ Glycine max - growth & development
/ Grain
/ Growth
/ Mycology
/ Pesticide Residues - analysis
/ Pests
/ Plant Diseases - microbiology
/ Plant Diseases - prevention & control
/ Plant Roots - growth & development
/ Residues
/ Root rot
/ Safety and security measures
/ Soybean
/ Soybeans
/ Thiram
