湖北农业科学 ›› 2020, Vol. 59 ›› Issue (24): 169-176.doi: 10.14088/j.cnki.issn0439-8114.2020.24.038

• 生物工程 • 上一篇    下一篇

低温胁迫下两叶一心期棉花叶片的生理响应和转录组分析

王晓曼1,2,3, 王琼珊1,2,3, 王孝刚1,2,3, 张教海1,2,3, 张友昌1,2,3, 张兴中1,2,3, 别墅1,2,3, 夏松波1,2,3   

  1. 1.湖北省农业科学院经济作物研究所,武汉 430064;
    2.农业农村部长江中游棉花生物学与遗传育种重点实验室,武汉 430064;
    3.湖北省农业科技创新中心,武汉 430064
  • 收稿日期:2020-10-26 出版日期:2020-12-25 发布日期:2021-01-21
  • 通讯作者: 夏松波,副研究员,主要从事棉花栽培研究工作,(电话)13667267696;别墅,研究员,主要从事棉花栽培研究工作,(电子信箱)bieshu02@163.com。
  • 作者简介:王晓曼(1990-),女,山西忻州人,硕士,主要从事生物技术研究工作,(电话)15827491198,(电子信箱)1216080733@qq.com
  • 基金资助:
    棉花轻简高效栽培技术集成与示范项目(2020YFD1001000); 现代农业产业技术体系专项; 湖北省农业科技创新中心项目(2019-620-000-06)

Physiological response and transcriptome analysis of cotton leaf in the two-leaf period under low temperature

WANG Xiao-man1,2,3, WANG Qiong-shan1,2,3, WANG Xiao-gang1,2,3, ZHANG Jiao-hai1,2,3, ZHANG You-chang1,2,3, ZHANG Xing-zhong1,2,3, BIE Shu1,2,3, XIA Song-bo1,2,3   

  1. 1. Institute of Cash Crops, Hubei Academy of Agricultural Sciences,Wuhan 430064, China;
    2. Key Laboratory of Cotton Biology and Breeding in the Middle Reaches of the Changjiang River, Ministry of Agriculture and Rural Affairs,Wuhan 430064, China;
    3. Hubei Agricultural Science and Technology Innovation Center,Wuhan 430064, China
  • Received:2020-10-26 Online:2020-12-25 Published:2021-01-21

摘要: 以CN01和SJB016(耐低温)为材料,研究了低温处理对两叶一心期棉花叶片的影响。测定了25 ℃(CK)和12 ℃(低温)处理0、3、6、12 、24、48和72 h后CN01和SJB016中丙二醛(MDA)、可溶性糖(SS)和脯氨酸(Pro)含量的变化。研究发现,与25 ℃相比,12 ℃处理后CN01和SJB016中MDA、SS和Pro含量均上升。与CN01相比,低温处理后SJB016中MDA含量上升幅度较小,SS含量上升幅度较大,而Pro含量上升幅度较小。结合上述3个指标,发现12 ℃处理6 h棉花叶片的生理指标变化最明显。对12 ℃处理6 h的两叶一心期棉花叶片进行了RNA-seq。结果表明,与25 ℃相比,12 ℃处理后与光合作用相关的基因在CN01中均表现为上调,而光系统Ⅱ放氧复合物(PsdP、PsdQ)等基因在SJB016中表现为下调。与植物激素相关差异的基因在CN01和SJB016中表现为上调基因多于下调基因,其中乙烯响应转录因子ERF053、ERF020 、ERF061表现为显著上调。这些基因可能对提高棉花的抗寒性有重要作用。

关键词: 棉花叶片, 生理响应, 转录组, 基因表达, 低温胁迫

Abstract: CN01 and SJB016 (a low temperature resistant cotton) were used as materials to study the effects of low temperature treatment on cotton in the two-leaf period. Firstly, We separately measured the contents of malondialdehyde (MDA), soluble sugar (SS) and proline (Pro) in CN01 and SJB016 at 25 ℃ (CK) and 12 ℃ (low temperature treatment) for 0, 3, 6, 12, 24, 48 and 72 h. It was found that the contents of MDA, SS, and Pro in CN01 and SJB016 increased after 12 ℃ treatment compared with 25 ℃. After low temperature treatment, the content of MDA in SJB016 increased less than CN01, the content of SS in SJB016 increased larger than CN01, and the content of Pro in SJB016 increased less than CN01. Transcriptome analysis of cotton leaves in two-leaf period after low temperature treatment for 6 hours showed that the photosynthesis-related genes were up-regulated in CN01 after 12 ℃ treatment, while the genes of photosystem II oxygen-releasing complexes (PsdP, PsdQ, et al) were down-regulated in SJB016, compared with 25 ℃. The up-regulated differentially expressed genes associated with phytohormone were more than down-regulated genes in CN01 and SJB016, and ethylene-responsive transcription factors ERF053, ERF020, and ERF061 significantly up-regulated. These genes are deemed to play an important role in improving the cold resistance of cotton.

Key words: cotton leaf, physiological response, transcriptome, gene expression, low temperature treatment

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