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园艺学报 ›› 2023, Vol. 50 ›› Issue (10): 2079-2090.doi: 10.16420/j.issn.0513-353x.2022-0627

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

番茄生物钟基因SlLNK1SlEID1SlELF3光周期响应分析

刘慧1,*, 黄婷1,*, 陶建平1, 张佳琪1, 张榕蓉1, 宋刘霞3, 赵统敏3, 游雄2,**(), 熊爱生1,**()   

  1. 1 南京农业大学园艺学院,作物遗传与种质创新利用国家重点实验室,农业农村部华东地区园艺作物生物学与种质创制重点实验室,南京 210095
    2 南京农业大学理学院,南京 210095
    3 江苏省农业科学院蔬菜研究所,南京 210014
  • 收稿日期:2023-05-05 修回日期:2023-08-03 出版日期:2023-10-25 发布日期:2023-10-30
  • 通讯作者: **(E-mail:xiongaisheng@njau.edu.cn,youx@njau.edu.cn)
  • 作者简介: 共同第一作者
  • 基金资助:
    江苏省自然科学基金青年基金项目(BK20221009); 中国博士后科学基金面上项目(2021M701742)

Analysis of Circadian Clock Genes SlLNK1SlEID1,and SlELF3 Response to Photoperiod in Tomato

LIU Hui1, HUANG Ting1, TAO Jianping1, ZHANG Jiaqi1, ZHANG Rongrong1, SONG Liuxia3, ZHAO Tongmin3, YOU Xiong2,**(), XIONG Aisheng1,**()   

  1. 1 State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization,Key Laboratory of Horticultural Crop Biology and Germplasm Creation in East China of Ministry of Agriculture and Rural Affairs,College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China
    2 College of Sciences,Nanjing Agricultural University,Nanjing 210095,China
    3 Institute of Vegetable Crops,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China
  • Received:2023-05-05 Revised:2023-08-03 Published:2023-10-25 Online:2023-10-30
  • Contact: **(E-mail:xiongaisheng@njau.edu.cn,youx@njau.edu.cn)

摘要:

利用BLAST同源比对的方法鉴定获得番茄生物钟基因LNK1(night light-inducible and clock-regulated 1)、EID1(eia-like inhibitor of differentiation 1)和ELF3(early flowering 3)在35个物种中的直系同源基因,系统进化分析发现LNK1EID1ELF3起源于陆地植物。通过qRT-PCR证明三者均响应光周期和不同光照强度,光照显著诱导SlLNK1表达,抑制EID1ELF3的表达。在2个光周期(48 h)中,番茄叶片净光合速率、胞间CO2浓度、气孔导度和蒸腾速率呈节律变化。通过转录组分析3个基因的时空表达模式发现,它们在不同组织中呈现差异:SlLNK1在叶片、茎和花中高表达,SlEID1SlELF3在根和果实中特异性表达。

关键词: 番茄, 生物钟基因, 光照强度, 表达分析, 光合特性

Abstract:

Circadian clock genes play important roles in the regulation of plant growth,development and metabolism. LNK1EID1 and ELF3 are important circadian clock genes in tomato. In this study,orthologous genes of SlLNK1SlEID1 and SlELF3 were identified by BLAST software in 35 species. The phylogenetic analysis found these genes were originated from land plants. qRT-PCR experiments showed that the three genes responded to photoperiod and different light intensities with different expression patterns. During two photoperiods(48 h),the net photosynthetic rate,intercellular CO2 concentration,stomatal conductance,and transpiration rate changed rhythmically. Transcriptome analysis of temporal and spatial expression patterns of clock genes SlLNK1SlEID1,and SlELF3 in tomato showed differences in different tissues.

Key words: tomato, circadian clock gene, light intensity, expression analysis, photosynthetic characteristics