ORIGINAL RESEARCH article
Front. Microbiol.
Sec. Microbe and Virus Interactions with Plants
Volume 16 - 2025 | doi: 10.3389/fmicb.2025.1602476
Responses of microbial colonies, rice growth, and yield formation to salt stress under different substrate conditions
Provisionally accepted
- 1Hainan University, Haikou, Hainan Province, China
- 2Guangdong Ocean University, Zhanjiang, China
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The mechanism of the microbial community and rice growth in response to salt stress has been widely reported. However, discussing the response mechanism under a single soil condition has limitations. The substrates in this study included S1 (river sand); S2 (river sand: laterite: peat soil = 8:1:1); S3 (river sand: laterite: peat soil = 6:2:2); S4 (river sand: laterite: peat soil = 4:3:3); S5 (laterite: peat soil = 1:1); S6 (laterite). Each bucket contained the same volume of substrate and the same mass of NaCl with fresh water as a control. Under salt stress, the richness and diversity of the microbial communities in S1 and S4 were significantly reduced compared with their respective non-salt controls, while no significant changes occurred in S2 and S5. There were differences in the sensitivity and adaptability of Bacteroidota to salt stress under different substrate conditions. The relative abundance of Bacteroidota increased after salt treatment in S1, S2, and S4 but decreased in S5. Under salt stress, the substrate with moderate nutrients and pore structure (S2 and S4) in this study was more beneficial to Niastella. In addition, salt stress increased the relative abundance of "stress tolerant" phenotypes in the S1 substrate (river sand), and Ellin6067 and MND1 contributed more to the "stress tolerant". The results of this study provided a basis for optimizing farmland soil microecology and achieving stress-resistant rice cultivation.
Keywords: rice, substrate, microbial colonies, salt stress, yield
Received: 29 Mar 2025; Accepted: 14 Aug 2025.
Copyright: © 2025 Zhou, Zheng and Feng. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Dianfeng Zheng, Guangdong Ocean University, Zhanjiang, China
Naijie Feng, Guangdong Ocean University, Zhanjiang, China
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