Control of Bird Feeding Behavior by Tannin1 through Modulating the Biosynthesis of Polyphenols and Fatty Acid-Derived Volatiles in Sorghum

查看全文 作　　者：Peng [1,2]Xie;Jiayang [1,2]Shi;Sanyuan [1]Tang;Chengxuan [1,2]Chen;Aimal [1,2]Khan;Fengxia [1,2]Zhang;Ying [3]Xiong;Chao [1]Li;Wei [4]He;Guodong [1,2]Wang;Fumin [3]Lei;Yaorong [1,2]Wu;Qi [1,2]Xie

机构地区：[1]State Key Laboratory of Plant Genomics,Institute of Genetics and Developmental Biology,The Innovative Academy of Seed Design,Chinese Academy of Sciences,Beijing 100101,P.R.China;[2]University of Chinese Academy of Sciences,Beijing 100049,P.R.China;[3]Key Laboratory of Zoological Systematics and Evolution,Institute of Zoology,Chinese Academy of Sciences,Beijing 100101,P.R.China;[4]School of Pharmaceutical Sciences,Tsinghua University,Beijing 100084,P.R.China

出　　处：《Molecular Plant》索引2019年第12卷第10期,共10页

摘　　要：Bird predation during seed maturation causes great loss to agricultural production.In this study,through GWAS analysis of a large-scale sorghum germplasm diversity panel,we identified that Tannin1,which encodes a WD40 protein functioning in the WD40/MYB/bHLH complex,controls bird feeding behavior in sorghum.Metabolic profiling analysis showed that a group of sorghum accessions preferred by birds contain mutated tan1-a/b alleles and accumulate significantly lower levels of anthocyanins and condensed tannin compounds.In contrast,a variety of aromatic and fatty acid-derived volatiles accumulate at significantly higher levels in these bird-preference accessions.We subsequently conducted both sparrow feeding and sparrow volatile attractant assays,which confirmed,respectively,the antifeedant and attractant functions of these differentially accumulated metabolites.In addition,the connection between the biosynthesis pathway of anthocyanin and proanthocyanidin and the pathway of fatty acid–derived volatile biosynthesis was demonstrated by discovering that Tannin1 complex modulates fatty acid biosynthesis by regulating the expression of SbGL2 in sorghum,thus affecting the accumulation of fatty acid-derived volatiles.Taken together,our study identified Tannin1 as the gene underlying the major locus controlling bird feeding behavior in sorghum,illustrating an example of the identification of an ecologically impactful molecular mechanism from field observation and providing significant insights into the chemistry of bird–plant ecological interactions. 关键词：BIRD damage GWAS metabolism TANNIN VOLATILES

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Control of Bird Feeding Behavior by Tannin1 through Modulating the Biosynthesis of Polyphenols and Fatty Acid-Derived Volatiles in Sorghum

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