根瘤菌
光合作用
生物
固氮
新陈代谢
固碳
固氮酶
生物化学
植物
细菌
遗传学
作者
Ni‐Na Zhang,Bing‐Yu Suo,Linlin Yao,Yu Ding,Jianhua Zhang,Gehong Wei,Zhouping Shangguan,Juan Chen
摘要
Abstract Hydrogen sulfide (H 2 S) performs a crucial role in plant development and abiotic stress responses by interacting with other signalling molecules. However, the synergistic involvement of H 2 S and rhizobia in photosynthetic carbon (C) metabolism in soybean ( Glycine max ) under nitrogen (N) deficiency has been largely overlooked. Therefore, we scrutinised how H 2 S drives photosynthetic C fixation, utilisation, and accumulation in soybean‐rhizobia symbiotic systems. When soybeans encountered N deficiency, organ growth, grain output, and nodule N‐fixation performance were considerably improved owing to H 2 S and rhizobia. Furthermore, H 2 S collaborated with rhizobia to actively govern assimilation product generation and transport, modulating C allocation, utilisation, and accumulation. Additionally, H 2 S and rhizobia profoundly affected critical enzyme activities and coding gene expressions implicated in C fixation, transport, and metabolism. Furthermore, we observed substantial effects of H 2 S and rhizobia on primary metabolism and C–N coupled metabolic networks in essential organs via C metabolic regulation. Consequently, H 2 S synergy with rhizobia inspired complex primary metabolism and C–N coupled metabolic pathways by directing the expression of key enzymes and related coding genes involved in C metabolism, stimulating effective C fixation, transport, and distribution, and ultimately improving N fixation, growth, and grain yield in soybeans.
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