Decreased Vascular Bundle 1 affects mitochondrial and plant development in rice.
Decreased Vascular Bundle 1 affects mitochondrial and plant development in rice.
复制标题
血管束 1 减少影响水稻线粒体和植物发育
DOI：
10.1186/s12284-021-00454-3
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发表时间：
2021-01-25
期刊：
影响因子：
--
通讯作者：
Wang N
中科院分区：
文献类型：
--
作者：
Zhang L;Feng P;Deng Y;Yin W;Wan Y;Lei T;He G;Wang N
背景线粒体是植物生长发育的重要调节因子，是ATP的主要来源，参与多种合成代谢和分解代谢途径。结果从EMS诱变的水稻突变体库中分离到1个线粒体缺陷突变维管束1(Dvb1)，该突变体具矮化、叶片窄、枝条短、维管束少、育性低等特点。基于图谱的克隆、遗传互补和系统发育分析表明，DVB1编码Mic10家族的一种结构蛋白，是线粒体中形成嵴所必需的，主要在维管束中表达。DVB1蛋白部分定位于线粒体，能够形成二聚体和聚合物。与野生型相比，突变株氨基酸代谢紊乱，生长素合成增加，对线粒体电子传递抑制剂的敏感性增加。结论DVB1属于Mic10家族，DVB1部分定位于线粒体。进一步的研究表明，DVB1在水稻线粒体和植株发育中起着重要的作用。
BackgroundMitochondria are vital regulators of plant growth and development, constitute the predominant source of ATP, and participate in multiple anabolic and catabolic metabolic pathways. But the mechanism by which dysfunctional mitochondria affect plant growth remains unknown, and more mitochondria-defective mutants need to be identified.ResultsA mitochondria-defective mutantdecreased vascular bundle 1(dvb1) was isolated from rice mutant library mutagenized by EMS (ethylmethane sulfonate), which shows dwarfism, narrow leaves, short branches, few vascular bundles, and low fertility. Map-based cloning, genetic complementation, and phylogenetic analysis revealed thatDVB1encodes a structural protein classified in the Mic10 family and is required for the formation of cristae in mitochondria, and was primarily expressed in vascular bundles. The DVB1 protein is partially localized in the mitochondria and capable of forming dimers and polymers. Comparing with the wild type, disruption of amino acid metabolism and increased auxin synthesis were observed indvb1mutant which also showed increased sensitivity to the mitochondrial electron transport inhibitors.ConclusionsDVB1 belongs to Mic10 family and DVB1 is partially localized in the mitochondria. Further studies indicated that DVB1 is important for mitochondrial and plant development in rice.
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影响因子：
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作者：
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通讯作者：
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