典型文献
The mitochondria-localized protein OsNDB2 negatively regulates grain size and weight in rice
文献摘要：
Grain size is a determinant of rice grain yield. In plants, mitochondria supply energy for cellular metabo-lism via the mitochondrial electron transport chain. Here we report that OsNDB2, which encodes a puta-tive rotenone-insensitive type Ⅱ NAD(P)H dehydrogenase (ND), negatively regulates grain size and weight in rice. Six ND members representing three major types of rice were identified, and the predicted OsNDB2 protein was localized to mitochondria. Contents of OsNDB2 transcripts were higher in young panicles and leaf blades. OsNDB2 overexpression reduced grain length, grain width, and 1000-grain weight and moderately influenced plant height, while knockout of OsNDB2 increased grain size and 1000-grain weight. Allelic mutations of OsNDB2 were associated with diverse grain appearances. Cellular observations revealed that variations in grain size of transgenic lines were caused by change in cell expansion but not cell proliferation in spikelet hulls. Our study sheds light on OsNDB2 function and provides a new potential breeding approach for increasing rice grain size and weight.
文献关键词：
中图分类号：
作者姓名：
Mingxin Guo;Jiajia Liu;Linlin Hou;Suna Zhao;Nana Zhang;Lili Lu;Xusheng Zhao
作者机构：
College of Life Sciences,Luoyang Normal University,Luoyang 471934,Henan,China
文献出处：
引用格式：
[1]Mingxin Guo;Jiajia Liu;Linlin Hou;Suna Zhao;Nana Zhang;Lili Lu;Xusheng Zhao-.The mitochondria-localized protein OsNDB2 negatively regulates grain size and weight in rice)[J].作物学报（英文版）,2022(06):1819-1824
A类：
OsNDB2,Allelic
B类：
localized,protein,negatively,regulates,grain,size,weight,rice,Grain,determinant,yield,In,plants,supply,energy,cellular,metabo,lism,via,mitochondrial,electron,transport,chain,Here,report,that,which,encodes,puta,rotenone,insensitive,NAD,dehydrogenase,Six,members,representing,three,major,types,were,identified,predicted,was,Contents,transcripts,higher,young,panicles,leaf,blades,overexpression,reduced,length,width,moderately,influenced,height,while,knockout,increased,mutations,associated,diverse,appearances,Cellular,observations,revealed,variations,transgenic,lines,caused,by,change,expansion,but,not,proliferation,spikelet,hulls,Our,study,sheds,light,function,provides,new,potential,breeding,approach,increasing
AB值：
0.567436
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