TAC4 controls tiller angle by regulating the endogenous auxin content and distribution in rice.

TAC4 controls tiller angle by regulating the endogenous auxin content and distribution in rice.
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TAC4通过调节水稻内源生长素含量和分布来控制分蘖角

DOI:
10.1111/pbi.13440
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发表时间:
2021-01
影响因子:
13.8
通讯作者:
Sun C
Sun C
中科院分区:
工程技术1区
文献类型:
--
作者:
Li H;Sun H;Jiang J;Sun X;Tan L;Sun C

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分蘖角度是水稻植株构型的重要组成部分,对水稻产量有重要影响。在这里,我们确定分蘖角度控制4(TAC 4)作为一种新的水稻分蘖角度调节器。TAC4编码一种植物特异性、高度保守的核蛋白。TAC4功能的丧失导致分蘖角度的显著增加。TAC4可以通过增加吲哚乙酸含量和影响生长素的分布来调节水稻向地性。序列分析表明,TAC 4在驯化和改良过程中经历了一个瓶颈,并固定在籼稻品种中。本研究结果有助于进一步了解分蘖角度的调控机制,也为水稻植株构型的改良提供了潜在的基因资源。
Tiller angle, an important component of plant architecture, greatly influences the grain yield of rice (Oryza sativa L.). Here, we identified Tiller Angle Control 4 (TAC4) as a novel regulator of rice tiller angle. TAC4 encodes a plant‐specific, highly conserved nuclear protein. The loss of TAC4 function leads to a significant increase in the tiller angle. TAC4 can regulate rice shoot gravitropism by increasing the indole acetic acid content and affecting the auxin distribution. A sequence analysis revealed that TAC4 has undergone a bottleneck and become fixed in indica cultivars during domestication and improvement. Our findings facilitate an increased understanding of the regulatory mechanisms of tiller angle and also provide a potential gene resource for the improvement of rice plant architecture.
DOI: 10.1111/tpj.14062
发表时间: 2018-11-01
期刊: PLANT JOURNAL
影响因子: 7.2
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