Genome-wide analyses of the bZIP family reveal their involvement in the development, ripening and abiotic stress response in banana.
Genome-wide analyses of the bZIP family reveal their involvement in the development, ripening and abiotic stress response in banana.
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bZIP 家族的全基因组分析揭示了它们参与香蕉的发育、成熟和非生物胁迫反应
DOI：
10.1038/srep30203
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发表时间：
2016-07-22
影响因子：
4.6
通讯作者：
Jin Z
中科院分区：
文献类型：
--
作者：
Hu W;Wang L;Tie W;Yan Y;Ding Z;Liu J;Li M;Peng M;Xu B;Jin Z
亮氨酸拉链（leucine zipper，bZIP）转录因子在多种生物学过程中发挥重要作用。然而，关于重要水果作物香蕉中的bZIP家族的信息较少。在这项研究中，121 bZIP转录因子基因在香蕉基因组中被确定。系统发育分析表明，MabZIPs可分为11个亚科。同一亚家族中的大多数MabZIP基因具有相似的基因结构和保守的基序。两种香蕉基因型的综合转录组分析揭示了不同器官中MabZIP基因的差异表达模式，在果实发育和成熟的各个阶段，以及对非生物胁迫的反应，包括干旱，寒冷和盐。相互作用网络和共表达分析表明，A组MabZIP介导的网络参与了各种胁迫信号传导，这是强烈激活的香蕉ABB Pisang Awak。本研究为深入了解MabZIP基因复杂的转录调控机制提供了新的思路，并为香蕉品种的遗传改良提供了具有组织特异性、发育依赖性和非生物胁迫响应性的候选MabZIP基因。
The leucine zipper (bZIP) transcription factors play important roles in multiple biological processes. However, less information is available regarding the bZIP family in the important fruit crop banana. In this study, 121 bZIP transcription factor genes were identified in the banana genome. Phylogenetic analysis showed that MabZIPs were classified into 11 subfamilies. The majority of MabZIP genes in the same subfamily shared similar gene structures and conserved motifs. The comprehensive transcriptome analysis of two banana genotypes revealed the differential expression patterns of MabZIP genes in different organs, in various stages of fruit development and ripening, and in responses to abiotic stresses, including drought, cold, and salt. Interaction networks and co-expression assays showed that group A MabZIP-mediated networks participated in various stress signaling, which was strongly activated in Musa ABB Pisang Awak. This study provided new insights into the complicated transcriptional control of MabZIP genes and provided robust tissue-specific, development-dependent, and abiotic stress-responsive candidate MabZIP genes for potential applications in the genetic improvement of banana cultivars.