Potential Secretory Transporters and Biosynthetic Precursors of Biological Nitrification Inhibitor 1,9-Decanediol in Rice as Revealed by Transcriptome and Metabolome Analyses

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外文摘要：Biological nitrification inhibitors(BNIs)are released from plant roots and inhibit the nitrification activity of microorganisms in soils,reducing NO3‒ leaching and N2O emissions,and increasing nitrogen-use efficiency(NUE).Several recent studies have focused on the identification of new BNIs,yet little is known about the genetic loci that govern their biosynthesis and secretion.We applied a combined transcriptomic and metabolomic analysis to investigate possible biosynthetic pathways and transporters involved in the biosynthesis and release of BNI 1,9-decanediol(1,9-D),which was previously identified in rice root exudates.Our results linked four fatty acids,icosapentaenoic acid,linoleate,norlinolenic acid,and polyhydroxy-α,ω-divarboxylic acid,with 1,9-D biosynthesis and three transporter families,namely the ATP-binding cassette protein family,the multidrug and toxic compound extrusion family,and the major facilitator superfamily,with 1,9-D release from roots into the soil medium.Our finding provided candidates for further work on the genes implicated in the biosynthesis and secretion of 1,9-D and pinpoint genetic loci for crop breeding to improve NUE by enhancing 1,9-D secretion,with the potential to reduce NO3‒leaching and N2O emissions from agricultural soils.

外文关键词：

1,9-decanediolbiological nitrification inhibitormetabolomic analysisnitrogen-use efficiencytranscriptomic analysis

作者：

DI Dongwei、MA Mingkun、ZHANG Xiaoyang、LU Yufang、Herbert J.KRONZUCKER、SHI Weiming

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作者单位：

State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China

University of Chinese Academy of Sciences,Beijing 100049,China

School of BioSciences,The University of Melbourne,Parkville,VIC 3010,Australia

School of Food Science and Engineering,Foshan University,Foshan 528000,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaStrategic Priority Research Program of the Chinese Academy of SciencesYouth Innovation Promotion Association of the Chinese Academy of SciencesEnterprise Cooperation Projects of China

项目编号：

3203009932072670XDA280203012023326Am20210407RD

出版年：

2024

DOI：

10.1016/j.rsci.2023.09.002

水稻科学(英文版)

中国水稻研究所

水稻科学(英文版)

CSTPCD

影响因子：0.269

ISSN：1672-6308

年,卷(期)：2024.31(1)

参考文献量62