生物技术通报 ›› 2023, Vol. 39 ›› Issue (6): 189-198.doi: 10.13560/j.cnki.biotech.bull.1985.2022-1463

• 研究报告 • 上一篇    下一篇

基于代谢组学研究谷子SiYABBYs参与花发育过程中鼠李糖苷的生物合成

韩华蕊1(), 杨宇琭1, 门艺涵1, 韩尚玲1, 韩渊怀1,2,3, 霍轶琼1,2(), 侯思宇1,2,3()   

  1. 1.山西农业大学农学院,太谷 030801
    2.山西农业大学农业生物工程研究所,太谷 030801
    3.杂粮种质创新与分子育种山西省重点实验室,太谷 030801
  • 收稿日期:2022-11-29 出版日期:2023-06-26 发布日期:2023-07-07
  • 通讯作者: 侯思宇,男,副教授,研究方向:种质创新与遗传工程;E-mail: bragren123@163.com
    霍轶琼,女,讲师,研究方向:谷子米色基因功能;E-mail: yiqionghuo2013@126.com
  • 作者简介:韩华蕊,女,硕士研究生,研究方向:种质创新与遗传工程;E-mail: 2594488988@qq.com
  • 基金资助:
    谷子种业创新良种联合攻关项目(2022XCZX04-10);山西省高等学校科技创新项目(2021L103);山西农业大学科技创新基金项目-博士科研启动(2020BQ12);杂粮种质创新与分子育种山西省重点实验室

SiYABBYs Involved in Rhamnoside Biosynthesis During the Flower Development of Setaria italica, Based on Metabolomics

HAN Hua-rui1(), YANG Yu-lu1, MEN Yi-han1, HAN Shang-ling1, HAN Yuan-huai1,2,3, HUO Yi-qiong1,2(), HOU Si-yu1,2,3()   

  1. 1. College of Agriculture, Shanxi Agricultural University, Taigu 030801
    2. Institute of Agricultural Bioengineer, Shanxi Agricultural University, Taigu 030801
    3. Shanxi Key Laboratory of Germplasm Innovation and Molecular Breeding in Minor Crops, Taigu 030801
  • Received:2022-11-29 Published:2023-06-26 Online:2023-07-07

摘要:

花器官发育是生殖发育的前提和基础,对小穗最终的形成具有决定性作用,YABBY转录因子在花器官的发育中具有重要作用,探究谷子YABBY家族成员的序列特征及表达模式,揭示其与谷子穗发育的关系,为阐明谷子YABBY基因家族的功能以及提高谷子产量奠定理论基础。通过对谷子YABBY基因家族进行全基因组鉴定,分析SiYABBYs的理化性质、组织表达模式,并与拟南芥和水稻YABBY蛋白序列比对进行功能预测。结果表明,共鉴定8个YABBY家族成员,编码150-303个氨基酸,在抽穗期和授粉期的穗中特异表达,可能参与谷子营养组织的发育和花器官的形成。对谷子抽穗期和授粉期的代谢组数据与SiYABBYs的表达水平进行相关性分析发现,SiYABBY1/SiYABBY5/SiYABBY7/SiYABBY8与鼠李糖苷代谢通路的酶基因紧密关联,表明促进授粉期穗中鼠李糖苷的积累,可能与谷子的成育率及结实率相关。

关键词: 谷子, YABBY基因家族, 代谢组学

Abstract:

Flower organ is the premise and basis of reproductive development, and also plays a decisive role at the final stage of spikelet formation. YABBY transcription factors play an important role in the development of flower organs. In order to clarify the function of YABBY gene family and improve the yield of foxtail millet (Setaria italica), we studied the sequence characteristics and expression patterns of YABBY gene family members in the foxtail millet. We analyzed genome-wide identification of YABBY gene family in the foxtail millet, the physical and chemical properties, and tissue expression patterns of SiYABBYs gene. Also, we aligned YABBY sequences of the foxtail millet, Arabidopsis and rice(Oryza sativa)for functional prediction. The results showed that 8 YABBY family members in the foxtail millet, encoding 150-303 amino acids. And we found these SiYABBYs genes were specifically expressed in panicles at heading and pollination stages, which may be involved in the development of vegetative tissues and the formation of flower organs in the foxtail millet. The expressions of SiYABBYs were correlated with the metabolome data at heading and pollination stages of the foxtail millet. The results showed that SiYABBY1/SiYABBY5/SiYABBY7/SiYABBY8 were closely related to rhamnoside metabolic pathway. Also, the results indicated that rhamnoside accumulation in the panicles during the pollination might be related to the fertility and seed setting rate of the foxtail millet.

Key words: foxtail millet, YABBY family, metabolomics