水稻GATA家族的全基因组鉴定及对干旱和盐胁迫的响应分析
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湖南农业大学生物科学技术学院,长沙 410128

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彭雨杏,E-mail:18926245946@163.com

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S511.503.4

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国家级大学生创新创业训练计划项目(s202410537017)


Genome-wide identification of GATA family in rice and analysis of its responses to drought and salt stress
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College of Biological Science and Technology,Hunan Agricultural University,Changsha 410128,China

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    摘要:

    为系统鉴定水稻抗旱与耐盐核心基因,对水稻GATA家族进行了全基因组鉴定,并探究其胁迫响应特征。结果显示,27个OsGATA基因分布于12条染色体,分为6个亚家族(Ⅰ~Ⅵ),其中Ⅳ亚家族成员占比最高(29.6%),且同一亚家族内基因具有保守的基序组成(CX?CX??-??CX?C);跨物种共线性分析显示水稻与玉米(Zea mays RefGen_v4)存在18对同源基因,支持单子叶植物GATA家族通过祖先基因扩张演化;组织表达谱显示,OsGATA17OsGATA26在多数组织中高表达且OsGATA26在茎尖分生组织(SAM)中表达尤为显著。qRT-PCR验证表明,干旱胁迫特异性上调OsGATA5OsGATA8OsGATA13的表达,而盐胁迫显著抑制OsGATA18的表达。上述结果表明,水稻GATA家族通过时空特异性表达模式调控非生物胁迫应答,为抗逆基因功能研究提供了重要靶点。

    Abstract:

    Rice,as a staple crop for over half of the global population,faces severe constraints in growth and development due to the drought and salt stress.Mining key regulatory genes for stress resistance in rice and deciphering their molecular mechanisms have become critical strategies for breeding high-yield and stable-yield varieties with changes in global climate intensifying.A genome-wide identification of the GATA transcription factor family was conducted and their characteristics of responding to stress were investigated to systematically identify core drought-resistant and salt-tolerant genes in rice.The results showed that 27 OsGATA genes were distributed across 12 chromosomes of rice and classified into 6 subfamilies (I-VI),with subfamily IV accounting for the highest proportion(29.6%).Members within the same subfamily exhibited conserved motif compositions (CX?CX??-??CX?C).The results of cross-species collinearity analysis showed that there were 18 homologous gene pairs between rice and maize (Zea mays RefGen_v4),indicating that the evolutionary expansion of the GATA family in monocots is through ancestral gene duplication.The results of tissue-specific expression profiles showed that OsGATA17 and OsGATA26 are highly expressed in most tissues,with the expression of latter displaying particularly prominent in the shoot apical meristem (SAM).The results of qRT-PCR validation showed that OsGATA5OsGATA8,and OsGATA13 were specifically upregulated under the drought stress,while OsGATA18 was significantly suppressed under the salt stress.It is indicated that the rice GATA family regulates the responses to abiotic stress with spatiotemporal-specific patterns of gene expression.It will provide critical targets for studying the functions of stress-resistance genes.

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彭雨杏,王婉莹,王淋骁,詹萌,韩飞宇,吴翰洋.水稻GATA家族的全基因组鉴定及对干旱和盐胁迫的响应分析[J].华中农业大学学报,2025,44(4):88-101

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  • 收稿日期:2025-03-04
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  • 在线发布日期: 2025-07-24
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