Genomic survey of MYB gene family in six pearl millet (Pennisetum glaucum) varieties and their response to abiotic stresses.

IF 1.3 4区生物学 Q4 GENETICS & HEREDITY

Genetica Pub Date : 2023-06-01 DOI:10.1007/s10709-023-00188-8

Jinhang Lv, Yue Xu, Xuming Dan, Yuchen Yang, Chunli Mao, Xixi Ma, Jie Zhu, Min Sun, Yarong Jin, Linkai Huang

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引用次数: 1

Abstract

In addition to their roles in developmental and metabolic processes, MYB transcription factors play crucial roles in plant defense mechanisms and stress responses. A comprehensive analysis of six pearl millet genomes revealed the presence of 1133 MYB genes, which can be classified into four phylogenetically distinct subgroups. The duplication pattern of MYB genes across the pearl millet genomes demonstrates their conserved and similar evolutionary history. Overall, MYB genes were observed to be involved in drought and heat stress responses, with stronger differential expressed observed in root tissues. Multiple analyses indicated that MYB genes mediate abiotic stress responses by modulating abscisic acid-related pathways, circadian rhythms, and histone modification processes. A substantial number of duplicated genes were determined to exhibit differential expression under abiotic stress. The consistent positive expression trend observed in duplicated gene pairs, such as PMA5G04432.1 and PMA2G00728.1, across various abiotic stresses suggests that duplicated MYB genes plays a key role in the evolution of adaptive responses of pearl millet to abiotic stresses.

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6个珍珠粟(Pennisetum glaucum)品种MYB基因家族基因组调查及其对非生物胁迫的响应

除了在发育和代谢过程中发挥作用外，MYB转录因子在植物防御机制和逆境反应中也起着至关重要的作用。对6个珍珠粟基因组的综合分析显示，存在1133个MYB基因，可将其分为4个系统发育不同的亚群。MYB基因在珍珠谷子基因组中的重复模式证明了它们保守而相似的进化史。总的来说，MYB基因参与了干旱和热胁迫反应，在根组织中表达差异更大。多项分析表明，MYB基因通过调节脱落酸相关通路、昼夜节律和组蛋白修饰过程介导非生物应激反应。大量的重复基因被确定在非生物胁迫下表现出差异表达。PMA5G04432.1和PMA2G00728.1等重复基因对在不同非生物胁迫下的一致阳性表达趋势表明，重复MYB基因在珍珠粟对非生物胁迫的适应性进化中起着关键作用。

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来源期刊

Genetica 生物-遗传学

CiteScore

2.70

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Genetica publishes papers dealing with genetics, genomics, and evolution. Our journal covers novel advances in the fields of genomics, conservation genetics, genotype-phenotype interactions, evo-devo, population and quantitative genetics, and biodiversity. Genetica publishes original research articles addressing novel conceptual, experimental, and theoretical issues in these areas, whatever the taxon considered. Biomedical papers and papers on breeding animal and plant genetics are not within the scope of Genetica, unless framed in an evolutionary context. Recent advances in genetics, genomics and evolution are also published in thematic issues and synthesis papers published by experts in the field.