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Comparison of methane metabolism in the rhizomicrobiomes of wild and related cultivated rice accessions reveals a strong impact of crop domestication


編輯:2022-10-27 14:19:08

Microbial communities from rhizosphere (rhizomicrobiomes) have been significantly impacted by domestication as evidenced by a comparison of the rhizomicrobiomes of wild and related cultivated rice accessions. While there have been many published studies focusing on the structure of the rhizomicrobiome, studies comparing the functional traits of the microbial communities in the rhizospheres of wild rice and cultivated rice accessions are not yet available. In this study, we used metagenomic data from experimental rice plots to analyze the potential functional traits of the microbial communities in the rhizospheres of wild rice accessions originated from Africa and Asia in comparison with their related cultivated rice accessions. The functional potential of rhizosphere microbial communities involved in alanine, aspartate and glutamate metabolism, methane metabolism, carbon fixation pathways, citrate cycle (TCA cycle), pyruvate metabolism and lipopolysaccharide biosynthesis pathways were found to be enriched in the rhizomicrobiomes of wild rice accessions. Notably, methane metab-olism in the rhizomicrobiomes of wild and cultivated rice accessions clearly differed. Key enzymes involved in methane production and utilization were overrepresented in the rhizomicrobiome samples obtained from wild rice accessions, suggesting that the rhizomicrobiomes of wild rice maintain a different ecological balance for methane production and utilization compared with those of the related cultivated rice accessions. A novel as-sessment of the impact of rice domestication on the primary metabolic pathways associated with microbial taxa in the rhizomicrobiomes was performed. Results indicated a strong impact of rice domestication on methane me-tabolism; a process that represents a critical function of the rhizosphere microbial community of rice. The find-ings of this study provide important information for future breeding of rice varieties with reduced methane emission during cultivation for sustainable agriculture. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license

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聯(lián)系人:張曉平
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Email:zhangxiaoping@neigae.ac.cn
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聯(lián)系我們

聯(lián)系人:張曉平
聯(lián)系電話:0431-85542234? 85542357
Email:zhangxiaoping@neigae.ac.cn
地址:高新北區(qū)長東北高科技中心A區(qū)412室
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?2022 長春中科東地農(nóng)業(yè)機械裝備有限公司 備案號:吉ICP備2022007635號?技術(shù)支持:龍采科技集團