Advances in IGT Gene Family Regulating Crops Morphology

doi:10.19586/j.2095-2341.2022.0103

Current Biotechnology ›› 2022, Vol. 12 ›› Issue (5): 673-682.DOI: 10.19586/j.2095-2341.2022.0103

• Special Forum on Rapeseed Genetic and Breeding • Previous Articles Next Articles

Advances in IGT Gene Family Regulating Crops Morphology

Yinhai XU¹^,²(), Jia LIU¹()

^1.Key Laboratory of Biology and Genetic Improvement of Oil Crops，Ministry of Agriculture and Rural Affairs，Oil Crops Research Institute，Chinese Academy of Agricultural Sciences，Wuhan 430062，China
^2.Hubei Collaborative Innovation Center for Grain Industry，Engineering Research Center of Ecology and Agricultural Use of Wetland，Ministry of Education，College of Agriculture，Yangtze University，Hubei Jingzhou 434025，China

Received:2022-06-14 Accepted:2022-07-07 Online:2022-09-25 Published:2022-09-30
Contact: Jia LIU

IGT基因家族调控作物株型研究进展

徐崟海¹^,²(), 刘佳¹()

^1.中国农业科学院油料作物研究所，农业农村部油料作物生物学与遗传育种重点实验室，武汉 430062
^2.长江大学农学院，湿地生态与农业利用教育部工程研究中心，主要粮食作物产业化湖北省协同创新中心，湖北荆州 434000

通讯作者: 刘佳
作者简介:徐崟海 E-mail: 1756881842@qq.com；
基金资助:
国家自然科学基金项目(U19A2029);中国农业科学院科技创新工程项目(CAAS-ZDRW 2021 05);中央级科研院所基本科研业务费专项(161017202203)

Abstract

Abstract:

The ideotype of crops ask for compact plant type and deep root structure， which is one of the objective of improving crop genetic traits to adapt for modern mechanization and high-density cultivation for high yield. The IGT gene family is mainly involved in the regulation of crop architecture， composed of three subfamilies： DRO1（DEEPER ROOTING 1）， TAC1（TILLER ANGLE CONTROL 1） and LA1（LAZY 1）. They participate in the gene network of crop morphology through the regulation of hormones and related proteins. This paper mainly summarized the progress of IGT gene family members in regulating the morphology of monocotyledon and dicotyledon crops， especially the similarities and differences in branching（tillering）angle and lateral root gravitropism. It provided theoretical value for further studying the regulation mechanism of crop morphological architecture and breeding roadmap for cultivating ideotype crops with high yield， high-dense cultivating tolerance and mechanical harvest.

Key words: IGT gene family, monocotyledon and dicotyledon crops, plant morphology, gravitropism, high-density cultivation

摘要：

紧凑株型与深根系结构是现代作物实现机械化种植和密植高产的理想株型形态，也是改良农作物遗传性状的目标之一。IGT基因家族参与作物株型的调节，主要由DRO1（DEEPER ROOTING 1）、TAC1（TILLER ANGLE CONTROL 1）和LA1（LAZY 1）三个亚族组成，通过植物激素和相关蛋白的调控参与作物形态构建。以单子叶作物水稻、玉米以及双子叶模式植物拟南芥和作物油菜为代表，综述了IGT基因家族成员在调控单双子叶作物形态中的进展，特别是在分枝（蘖）角度和侧根向重力性中的相关机制及异同，以期为深入研究作物形态构建的调控机制和培育高产、耐密植以及适应机械化收获理想株型作物提供理论参考。

关键词: IGT基因家族, 单双子叶作物, 植株形态, 向重力性, 密植

CLC Number:

S311

Yinhai XU, Jia LIU. Advances in IGT Gene Family Regulating Crops Morphology[J]. Current Biotechnology, 2022, 12(5): 673-682.

徐崟海, 刘佳. IGT基因家族调控作物株型研究进展[J]. 生物技术进展, 2022, 12(5): 673-682.

Figures/Tables 3

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分类	物种	基因ID	描述	文献
单子叶植物	水稻 (Oryza sativa L.)	OsLAZY1	首次在水稻中克隆到LA1，发现该基因调控生长素极性运输影响分蘖角	[9]
		OsLAZY1	LAZY1依赖独立重力信号途径调控分蘖角	[10]
		OsTAC1	首次在水稻中定位到TAC1基因	[11]
		OsLAZY1	过表达OsPIN2会抑制OsLAZY1表达，导致分蘖数、分蘖角增加和植株矮化	[12]
		OsTAC1	TAC1在水稻基因组中的进化关系	[13]
		OsDRO1	DRO1基因受生长素负调控，能够促进水稻耐旱性	[4]
		OsLAZY1	LAZY1和OsAFB6同时调控GH3基因家族和生长素输入、输出载体基因，且受光照抑制	[14]
		OsLAZY1	LAZY1依赖性生长素不对称分布介导的核心途径调控水稻分蘖角	[15]
		OsLAZY1	LA1与OsBRXL4在细胞核中互作调控分蘖角	[16]
		OsLAZY2	LA2通过作用LA1的上游以介导生长素横向转运来调节地上部向地性和分蘖角	[17]
		OsTAC1	成功开发了PM-TAC1作为荧光功能分子标记，该标记被有效地用于水稻植株的育种	[18]
	玉米 (Zea mays L.)	ZmLAZY1	ZmLA1通过调节生长素转运、生长素信号传导和光响应来介导芽向重性和花序发育	[19]
	玉米 (Zea mays L.)	ZmTAC1	首次在玉米中克隆到TAC1基因，发现该基因调控玉米叶夹角	[20]
双子叶植物	拟南芥 (Arabidopsis thaliana L.)	AtLAZY1	LAZY1的核定位功能不是调控分枝夹角所必须的	[21]
		AtLAZY1	LAZY1是一种外周膜蛋白，可能与质膜外围的微管相互作用	[22]
		AtLAZY1 AtLAZY2 AtLAZY3 AtLAZY4 AtLAZY5 AtLAZY6	LAZY1亚家族成员受重力刺激，通过调节生长素不对称分布调控分枝角、分蘖角和侧根夹角	[23]
		AtDRO1	AtDRO1的过表达使根的侧根角变小，叶片卷曲，角果缩短和侧枝角变窄	[24]
		AtTAC1	TAC1响应光合作用信号调节拟南芥株型结构	[25]
		AtLAZY2 AtLAZY3 AtLAZY4	NGR亚族通过调节平衡细胞中的生长素外排载体定位和响应重力的生长素横向运输，控制根向重力方向生长	[26]
		AtLAZY1	第二保守基序的两个保守氨基酸（L92A / I94A）改变可以逆转生长素梯度，调控茎向重力方向响应	[7]
		AtLAZY1 AtTAC1	LAZY1是TAC1上位性，会抑制TAC1的表型	[27]
		AtLAZY2 AtLAZY3	LZY2和LZY3的CCL域与RLDs的BRX域相互作用，将RLDs从细胞质募集到质膜上调控侧根的向负重力方向生长	[28]
		AtLAZY4	光通过PIF和HY5积累调节拟南芥中LAZY4表达来响应重力信号	[29]
		AtDRO1	AtDRO1通过核定位影响生长素分布，从而调节侧根夹角	[30]
	油菜 (Brassica napus L.)	BnIGT	IGT基因家族成员均含有与转录因子结合，光反应和激素信号传导有关的顺式元件，并在不同的组织特异表达	[31]
		BnLAZY1	LAZY1-1、LAZY1-2与BnaCnng05760D和BnaC03g75880D存在互作，调控分枝夹角；光照会影响LAZY1的表达	[32]
		BnLAZY1	LAZY1通过油菜素内酯途径调控水稻叶夹角发育	[33]
		BnaA.LAZY1 BnaC.LAZY1	通过关联分析定位到BnaA.LAZY1和BnaC.LAZY1	[34]

分类	物种	基因ID	描述	文献
单子叶植物	水稻 (Oryza sativa L.)	OsLAZY1	首次在水稻中克隆到LA1，发现该基因调控生长素极性运输影响分蘖角	[9]
		OsLAZY1	LAZY1依赖独立重力信号途径调控分蘖角	[10]
		OsTAC1	首次在水稻中定位到TAC1基因	[11]
		OsLAZY1	过表达OsPIN2会抑制OsLAZY1表达，导致分蘖数、分蘖角增加和植株矮化	[12]
		OsTAC1	TAC1在水稻基因组中的进化关系	[13]
		OsDRO1	DRO1基因受生长素负调控，能够促进水稻耐旱性	[4]
		OsLAZY1	LAZY1和OsAFB6同时调控GH3基因家族和生长素输入、输出载体基因，且受光照抑制	[14]
		OsLAZY1	LAZY1依赖性生长素不对称分布介导的核心途径调控水稻分蘖角	[15]
		OsLAZY1	LA1与OsBRXL4在细胞核中互作调控分蘖角	[16]
		OsLAZY2	LA2通过作用LA1的上游以介导生长素横向转运来调节地上部向地性和分蘖角	[17]
		OsTAC1	成功开发了PM-TAC1作为荧光功能分子标记，该标记被有效地用于水稻植株的育种	[18]
	玉米 (Zea mays L.)	ZmLAZY1	ZmLA1通过调节生长素转运、生长素信号传导和光响应来介导芽向重性和花序发育	[19]
	玉米 (Zea mays L.)	ZmTAC1	首次在玉米中克隆到TAC1基因，发现该基因调控玉米叶夹角	[20]
双子叶植物	拟南芥 (Arabidopsis thaliana L.)	AtLAZY1	LAZY1的核定位功能不是调控分枝夹角所必须的	[21]
		AtLAZY1	LAZY1是一种外周膜蛋白，可能与质膜外围的微管相互作用	[22]
		AtLAZY1 AtLAZY2 AtLAZY3 AtLAZY4 AtLAZY5 AtLAZY6	LAZY1亚家族成员受重力刺激，通过调节生长素不对称分布调控分枝角、分蘖角和侧根夹角	[23]
		AtDRO1	AtDRO1的过表达使根的侧根角变小，叶片卷曲，角果缩短和侧枝角变窄	[24]
		AtTAC1	TAC1响应光合作用信号调节拟南芥株型结构	[25]
		AtLAZY2 AtLAZY3 AtLAZY4	NGR亚族通过调节平衡细胞中的生长素外排载体定位和响应重力的生长素横向运输，控制根向重力方向生长	[26]
		AtLAZY1	第二保守基序的两个保守氨基酸（L92A / I94A）改变可以逆转生长素梯度，调控茎向重力方向响应	[7]
		AtLAZY1 AtTAC1	LAZY1是TAC1上位性，会抑制TAC1的表型	[27]
		AtLAZY2 AtLAZY3	LZY2和LZY3的CCL域与RLDs的BRX域相互作用，将RLDs从细胞质募集到质膜上调控侧根的向负重力方向生长	[28]
		AtLAZY4	光通过PIF和HY5积累调节拟南芥中LAZY4表达来响应重力信号	[29]
		AtDRO1	AtDRO1通过核定位影响生长素分布，从而调节侧根夹角	[30]
	油菜 (Brassica napus L.)	BnIGT	IGT基因家族成员均含有与转录因子结合，光反应和激素信号传导有关的顺式元件，并在不同的组织特异表达	[31]
		BnLAZY1	LAZY1-1、LAZY1-2与BnaCnng05760D和BnaC03g75880D存在互作，调控分枝夹角；光照会影响LAZY1的表达	[32]
		BnLAZY1	LAZY1通过油菜素内酯途径调控水稻叶夹角发育	[33]
		BnaA.LAZY1 BnaC.LAZY1	通过关联分析定位到BnaA.LAZY1和BnaC.LAZY1	[34]

Advances in IGT Gene Family Regulating Crops Morphology

IGT基因家族调控作物株型研究进展

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