生物技术通报 ›› 2025, Vol. 41 ›› Issue (1): 173-185.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0479

• 研究报告 • 上一篇    下一篇

青稞HvnJAZ4的生物信息学和表达模式分析

王子傲1,2,3,4(), 田瑞5, 崔永梅1,2,3,4, 白羿雄1,2,3,4, 姚晓华1,2,3,4, 安立昆1,2,3,4(), 吴昆仑5()   

  1. 1.青海大学农林科学院,西宁 810016
    2.青藏高原种质资源研究与利用实验室,西宁 810016
    3.青海省青稞遗传育种重点实验室,西宁 810016
    4.国家麦类改良中心青海青稞分中心,西宁 810016
    5.青海大学农牧学院,西宁 810016
  • 收稿日期:2024-05-24 出版日期:2025-01-26 发布日期:2025-01-22
  • 通讯作者: 安立昆,男,副研究员,硕士研究生导师,研究方向:青稞遗传育种;E-mail: anlikun@163.com
    吴昆仑,男,研究员,博士研究生导师,研究方向:青稞遗传育种;E-mail: wklqaaf@163.com
  • 作者简介:王子傲,男,硕士研究生,研究方向:青稞遗传育种;E-mail: 13043832262@163.com
  • 基金资助:
    国家自然科学基金地区科学基金项目(32060423);国家自然科学基金地区科学基金项目(32060480);国家大麦(青稞)产业技术体系(CARS-05-01A-05);青海省自然科学基金计划-创新团队(2022-ZJ-902)

Bioinformatics and Expression Pattern Analysis of HvnJAZ4 Gene in Hulless Barley

WANG Zi-ao1,2,3,4(), TIAN Rui5, CUI Yong-mei1,2,3,4, BAI Yi-xiong1,2,3,4, YAO Xiao-hua1,2,3,4, AN Li-kun1,2,3,4(), WU Kun-lun5()   

  1. 1. Academy of Agricultural and Forestry Sciences of Qinghai University,Xining 810016
    2. Laboratory for Research and Utilization of Qinghai Tibet Plateau Germplasm Resources, Xining 810016
    3. Qinghai Key Laboratory of Hulless Barley Genetics and Breeding, Xining 810016
    4. Qinghai Subcenter of National Hulless Barley Improvement, Xining 810016
    5. College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016
  • Received:2024-05-24 Published:2025-01-26 Online:2025-01-22

摘要:

【目的】茉莉酸(JA)信号途径抑制因子JAZs家族是植物JA信号调控途径中的重要组成部分,探索青稞JA信号抑制因子HvnJAZ4基因和蛋白结构、分子动力学以及表达模式特点,为青稞HvnJAZs基因家族调控机制研究提供参考。【方法】采用多种生物信息学方法对HvnJAZ4的基因和蛋白结构,以及分子动力学特点进行分析,并采用qPCR和亚细胞定位对其表达模式进行研究。【结果】HvnJAZ4启动子区域有与JA、脱落酸(ABA)、赤霉素(GA)、水杨酸(SA)、低温响应相关的顺式作用元件。HvnJAZ4由418个氨基酸组成,其中,α螺旋、延长链、β折叠、无规则卷曲所占比例分别为23.50%、12.47%、2.64%和61.39%,HvnJAZ4与野生二粒小麦TdJAZ4亲缘关系最近。HvnJAZ4具有典型的NT、ZIM和Jas结构域,ZIM结构域是HvnJAZ4与其他HvnJAZs以及HvnNINJA1发生互作的关键结构域,Jas结构域是HvnJAZ4与HvnCOI1b发生互作的关键结构域。分子动力学模拟发现HvnJAZ4·Jas短肽与JA-Ile互作的关键氨基酸位点1个,与HvnCOI1b互作的关键氨基酸位点8个。相对于叶、根、茎和茎节,HvnJAZ4在籽粒、分蘖芽中表达量较高,并受低温、MeJA、ABA、GA诱导表达,亚细胞定位结果表明,HvnJAZ4定位在细胞核上。【结论】青稞HvnJAZ4可能在JA调控青稞生长发育和逆境适应以及与其他激素协同调控中扮演着关键角色。

关键词: 青稞, HvnJAZ4蛋白, 生物信息学分析, 分子动力学模拟

Abstract:

【Objective】The JAZs protein family is an important component of the jasmonic acid signaling pathway in plants. This study aimed to investigate the gene and protein structure and molecular dynamics of HvnJAZ4. Exploring the HvnJAZ4 gene and protein structure, molecular dynamics and expression pattern characteristics of JA signal inhibitor in hulless barley may provide a reference for the study of the regulatory mechanism of the hulless barley HvnJAZs gene family.【Method】Different bioinformatics methods were used to analyze the gene and protein structure of HvnJAZ4 as well as molecular dynamic characteristics. qPCR and subcellular localization techniques were used to study their expression pattern.【Result】The HvnJAZ4 promoter region contained cis-acting elements related to the responses to jasmonic acid(JA), abscisic acid(ABA), gibberellin(GA), and salicylic acid(SA), and low temperature. Further, the HvnJAZ4 protein contained 418 amino acids, with α-helix, extended strand, β-sheet, and random coil by the proportions 23.50%, 12.47%, 2.64%, and 61.39%, respectively. HvnJAZ4 showed the closest homology to the TdJAZ4 protein in Triticum dicoccoides. HvnJAZ4 contained typical NT, ZIM, and Jas domains, while the ZIM domain is the key domain for HvnJAZ4 to interact with other HvnJAZs and HvnNINJA1, and the Jas domain is the key domain for HvnJAZ4 to interact with HvnCOI1b. Molecular dynamics simulations identified that one key amino acid site interacting with JA-Ile, and eight key sites of HvnJAZ4·Jas interacting with JA-Ile, and eight key sites interacting with HvnCOI1b. Compared to the leaves, roots, stems and stem internodes, HvnJAZ4 was highly expressed in grains and tiller buds, and its expression was induced by low temperature, MeJA, ABA, GA. Subcellular localization results indicated that HvnJAZ4 was localized in the nucleus.【Conclusion】HvnJAZ4 in hulless barley may play a key role in regulating growth, development, and stress response through JA signaling and synergistic interactions with other plant hormones.

Key words: hulless barely, HvnJAZ4 protein, bioinformatics analysis, molecular dynamics simulation