Nitrogen-fixing cyanobacteria enhance microbial carbon utilization by modulating the microbial community composition in paddy soils of the Mollisols region,Science of the Total Environment

当前位置： X-MOL 学术 › Sci. Total Environ. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Nitrogen-fixing cyanobacteria enhance microbial carbon utilization by modulating the microbial community composition in paddy soils of the Mollisols region
Science of the Total Environment ( IF 8.2 ) Pub Date : 2024-04-23 , DOI: 10.1016/j.scitotenv.2024.172609
Xiao Liang ₁ , Yu Zhu ₂ , Huiyao Liu ₁ , Zuoming Xie ₃ , Genbao Li ₄ , Dunhai Li ₄ , Yuting Liang ₅ , Chengrong Peng ₆

Affiliation

Nitrogen-fixing cyanobacteria (NFC) are photosynthetic prokaryotic microorganisms capable of nitrogen fixation. They can be used as biofertilizers in paddy fields, thereby improving the rice tillering capacity and yield. To reveal the microbiological mechanisms by which nitrogen-fixing cyanobacteria alter soil carbon storage, we conducted a field experiment using NFC as a partial substitute for nitrogen fertilizer in paddy fields in the Sanjiang Plain of Northeast China's Mollisols region. Using metagenomic sequencing technology and Biolog Ecoplate™ carbon matrix metabolism measurements, we explored the changes in the soil microbial community structure and carbon utilization in paddy fields. The results indicated that the replacement of nitrogen fertilizer with NFC predisposed the soil microbial community to host a great number of copiotrophic bacterial taxa, and Proteobacteria and Actinobacteria were closely associated with the metabolism of soil carbon sources. Moreover, through co-occurrence network analysis, we found that copiotrophic bacteria clustered in modules that were positively correlated with the metabolic level of carbon sources. The addition of NFC promoted the growth of copiotrophic bacteria, which increased the carbon utilization level of soil microorganisms, improved the diversity of the microbial communities, and had a potential impact on the soil carbon stock. The findings of this study are helpful for assessing the impact of NFC on the ecological function of soil microbial communities in paddy fields in the black soil area of Northeast China, which is highly important for promoting sustainable agricultural development and providing scientific reference for promoting the use of algal-derived nitrogen fertilizers.

中文翻译：

固氮蓝藻通过调节莫利索斯地区水稻土中的微生物群落组成来增强微生物碳的利用

固氮蓝细菌（NFC）是具有固氮能力的光合原核微生物。它们可用作稻田的生物肥料，从而提高水稻的分蘖力和产量。为了揭示固氮蓝藻改变土壤碳储量的微生物机制，我们在东北三江平原软土区的稻田中进行了使用NFC部分替代氮肥的田间试验。利用宏基因组测序技术和Biolog Ecoplate™碳基质代谢测量，我们探索了稻田土壤微生物群落结构和碳利用的变化。结果表明，NFC替代氮肥使土壤微生物群落中存在大量的富营养菌类群，其中变形菌门和放线菌门与土壤碳源代谢密切相关。此外，通过共现网络分析，我们发现富营养细菌聚集在与碳源代谢水平正相关的模块中。 NFC的添加促进了富营养菌的生长，提高了土壤微生物的碳利用水平，改善了微生物群落的多样性，对土壤碳储量产生潜在影响。本研究结果有助于评估NFC对东北黑土区稻田土壤微生物群落生态功能的影响，对促进农业可持续发展具有重要意义，为推广使用提供科学参考。藻源氮肥。

更新日期：2024-04-23

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南