Journal
MICROBIAL ECOLOGY
Volume 85, Issue 3, Pages 1113-1135Publisher
SPRINGER
DOI: 10.1007/s00248-022-02136-z
Keywords
Endosphere; Food security; Leguminous crop; Nitrogen-fixing bacteria; Plant growth promotion; Soybean microbiome
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This review evaluates the prospects and challenges of soybean endophytic bacteria in sustainable agriculture. Soybean endophytic bacteria can enhance soil nutrients, increase yield, and promote plant growth and health through various mechanisms. The agricultural industry is striving to utilize endophytic microbes for a stable ecosystem and food security, but progress is limited by available techniques.
This review evaluates oilseed crop soybean endophytic bacteria, their prospects, and challenges for sustainable agriculture. Soybean is one of the most important oilseed crops with about 20-25% protein content and 20% edible oil production. The ability of soybean root-associated microbes to restore soil nutrients enhances crop yield. Naturally, the soybean root endosphere harbors root nodule bacteria, and endophytic bacteria, which help increase the nitrogen pool and reclamation of another nutrient loss in the soil for plant nutrition. Endophytic bacteria can sustain plant growth and health by exhibiting antibiosis against phytopathogens, production of enzymes, phytohormone biosynthesis, organic acids, and secondary metabolite secretions. Considerable effort in the agricultural industry is focused on multifunctional concepts and bioprospecting on the use of bioinput from endophytic microbes to ensure a stable ecosystem. Bioprospecting in the case of this review is a systemic overview of the biorational approach to harness beneficial plant-associated microbes to ensure food security in the future. Progress in this endeavor is limited by available techniques. The use of molecular techniques in unraveling the functions of soybean endophytic bacteria can explore their use in integrated organic farming. Our review brings to light the endophytic microbial dynamics of soybeans and current status of plant microbiome research for sustainable agriculture.
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