Progress on Genetic Analysis and Molecular Dissection on Maize Leaf Angle Traits

doi:10.13523/j.cb.2111001

China Biotechnology

2021, Vol. 41

Issue (12): 74-87 DOI: 10.13523/j.cb.2111001

Progress on Genetic Analysis and Molecular Dissection on Maize Leaf Angle Traits

QIN Wen-xuan^1,²,LIU Xin^1,²,LONG Yan^1,^2,³,DONG Zhen-ying^1,^2,^**(

),WAN Xiang-yuan^1,^2,^3,^**(

)

1 Research Center of Biology and Agriculture, Shunde Graduate School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
3 Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co., Ltd., Beijing 100192, China

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Abstract

Maize yield is determined by the efficiency of plant capturing light energy and fixing CO₂ into organic carbon compounds. Leaf angle (LA) is one of the important traits of plant architecture, and smaller leaf angle is beneficial to improving the photosynthetic efficiency, planting density, and ultimately the increase of the yield of maize. Previous studies have shown that LA of maize is a complex quantitative trait controlled by multiple genes with higher heritability and significant contribution of additive genetic effects. At present, hundreds of quantitative trait loci (QTLs) related to LA in maize have been identified by QTL mapping and genome-wide association study (GWAS). Combined with mutant analysis, dozens of key genes regulating LA have also been cloned, which provides an important clue for understanding the genetic mechanism of LA in maize. Previous studies have used different populations, analysis models and even reference genome versions for maize LA genetic analysis, the identified QTLs were quite different in those studies, which hampered the understanding of genetic structure of LA traits. Therefore, in this study, we summarized the mapped QTLs and associated single nucleotide polymorphisms (SNPs) related to LA and constructed a consistent map, and then identified the genetic hot spots of LA. Finally, the cloned functional genes regulating LA were analyzed and classified. Our work not only provides primary data for understanding the genetic structure of maize LA and promoting the cloning of the candidate genes, but also provides useful molecular markers for molecular marker-assisted breeding and maize yield improvement.

Key words： Maize Leaf angle Quantitative trait loci(QTLs) Genome-wide association analysis(GWAS) Genetic structure

Received: 31 October 2021 Published: 13 January 2022

ZTFLH:

Q819

Corresponding Authors: Zhen-ying DONG,Xiang-yuan WAN E-mail: zydong@ustb.edu.cn;wanxiangyuan@ustb.edu.cn

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Cite this article:

QIN Wen-xuan,LIU Xin,LONG Yan,DONG Zhen-ying,WAN Xiang-yuan. Progress on Genetic Analysis and Molecular Dissection on Maize Leaf Angle Traits. China Biotechnology, 2021, 41(12): 74-87.

URL:

https://manu60.magtech.com.cn/biotech/10.13523/j.cb.2111001 OR https://manu60.magtech.com.cn/biotech/Y2021/V41/I12/74

Fig.1 Chromosomal distribution of leaf angle-related QTLs and SNPs in maize genome

Fig.2 Distribution of leaf angle-related QTL and SNP hotspots and the cloned genes in maize genome The genes located in the overlapping intervals of QTL hotspots and the SNP hotspots, only in the QTL hotspots, only in the SNP hotspots, or outside of the hotspots were labeled in red, green, blue or black respectively

途径1	基因名称	基因ID	位置 /bp	编码蛋白及功能注解	参考文献
1	Kn1	Zm00001d033859	Chr1: 276073335~276081242	KNOX转录因子	[60]
	LG1	Zm00001d002005	Chr2: 4230854~4234535	SPL转录因子	[17]
	WAB1	Zm00001d005737	Chr2: 185422359~185423189	TCP家族转录因子	[63]
	LG3	Zm00001d040611	Chr3: 53767845~53777713	KNOX转录因子	[64]
	LG2	Zm00001d042777	Chr3: 179387727~179396447	bZIP转录因子	[65]
	YABBY9	Zm00001d013895	Chr5: 24089489~24093556	C2C2-yabby转录因子	[66]
	YABBY15	Zm00001d017391	Chr5: 194316184~194319929	C2C2-yabby转录因子	[66]
	LBL1	Zm00001d035256	Chr6: 17759389~17765846	基因沉默3同源基因抑制因子	[83]
	RS1	Zm00001d018742	Chr7: 3845026~3851209	KNOX转录因子	[13]
	MWP1	Zm00001d020384	Chr7: 110525083~110531709	KANADI 转录因子	[67]
	LG4	Zm00001d010948	Chr8: 134760586~134766141	KNOX转录因子	[64]
	LGN-R	Zm00001d045945	Chr9: 48527705~48530228	受体样丝氨酸/苏氨酸蛋白激酶	[84]
	RLD1	Zm00001d048527	Chr9: 157815873~157824341	HD-ZIPⅢ蛋白	[20]
	YABBY14	Zm00001d025944	Chr10: 134353026~134355488	C2C2-yabby转录因子	[66]
2	DRL1	Zm00001d028216	Chr1: 26771165~26776231	CRC同源转录调控因子	[56]
	DRL2	Zm00001d048083	Chr9: 149627346~149632516	CRC同源转录调控因子	[56]
3	ZmDWF4	Zm00001d028325	Chr1: 30793737~30799897	甾体22-α-羟化酶	[57]
	ZmPGP1	Zm00001d031871	Chr1: 204748411~204755635	ABC转运蛋白家族成员	[58]
	ZmBRD1	Zm00001d033180	Chr1: 253162491~253166753	油菜素类固醇C-6氧化酶	[59]
	ZmAS1	Zm00001d033981	Chr1: 279982395~279986186	硫酸腺苷酰转移酶	[61]
	ZmIBH1-1	Zm00001d001982	Chr2: 3891754~3892380	bHLH转录因子	[61]
	ZmILI1	Zm00001d002121	Chr2: 6144651~6145983	bHLH转录因子	[62]
	ZmRAVL1	Zm00001d002562	Chr2: 15448580~15449809	B3结构域转录调控因子	[12]
	ZmCLA4	Zm00001d049174	Chr4: 19153020~19159545	EAR结构域转录抑制因子	[51]
	NA2	Zm00001d014887	Chr5: 67026171~67030023	24-亚甲基烯醇异构酶/还原酶	[85]
	DIL1	Zm00001d038087	Chr6: 147379164~147385725	AP2-like转录因子	[86]
	ZmBRI1a	Zm00001d011721	Chr8: 159899428~159902796	油菜素内脂受体蛋白	[87]
	ZmBBC1	Zm00001d011992	Chr8: 166018999~166021525	60S核糖体蛋白L13	[61]
	ZmACS7	Zm00001d026060	Chr10: 137296427~137304511	1-氨基环丙烷-1-羧酸合酶7	[68]
其他	TAC1	Zm00001d006184	Chr2: 200972420~200977073	功能未知功能蛋白质	[49]

Table 1 Summary of the cloned genes regulating leaf angle in maize

Table S1 Summary of collected leaf angle-related QTLs and SNPs and identification of the genetic mapping hotspots in maize


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