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

• Genetic & Breeding · Germplasm Resources · Molecular Biology • Previous Articles     Next Articles

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 Online:2023-10-25 Published:2023-10-30

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