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Acta Horticulturae Sinica ›› 2024, Vol. 51 ›› Issue (12): 2817-2828.doi: 10.16420/j.issn.0513-353x.2023-0768

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

Cloning and ABA Transport Function Analysis of CsNPF6.1/6.3 in Tea Plants

YUAN Qingyun1,2, HAN Yu1, HE Wei1, SU Hui1, BAN Qiuyan1, WU Chunlai1, ZHOU Qiongqiong1, XU Wenjing1, WANG Liyuan2(), ZHANG Fen1()   

  1. 1College of Horticulture,Henan Agricultural University,Zhengzhou 450046,China
    2Tea Research Institute,Chinese Academy of Agricultural Sciences,Hangzhou 310008,China
  • Received:2024-07-13 Revised:2024-09-25 Online:2024-12-25 Published:2024-12-13
  • Contact: WANG Liyuan, ZHANG Fen

Abstract:

To explore the hormone transport characteristics of tea(Camellia sinensis)NPF transporter,two complete NPF genes(CsNPF6.1 and CsNPF6.3)were cloned from‘Longjing 43’leaves. The CDS(coding sequence)of CsNPF6.1 and CsNPF6.3 were 1 665 bp and 1 788 bp encoding 554 and 595 amino acids,respectively. Phylogenetic analysis showed that CsNPF6.1 and CsNPF6.3 had the highest identical sequence identity with ClNPFCamellia lanceoleosa),which were 98.19% and 97.82% respectively. Both CsNPF6.1 and CsNPF6.3 were predicted to be located in the plasma membrane and were typical membrane transporters. Tissue-specific expressions revealed that they were expressed in tender leaves,mature leaves,and roots,and mainly accumulated in tender leaves. Under ABA treatment,the expression levels of CsNPF6.1 and CsNPF6.3 were significantly decreased in tender leaves,but significantly increased in roots. According to the identification of ABA-dependent yeast two-hybrid system,CsNPF6.1 and CsNPF6.3 could promote the growth of transgenic yeast cells and could significantly increase the content of ABA in yeast cells under 100 μmol · L-1 ABA condition. In conclusion,both CsNPF6.1 and CsNPF6.3 in tea plants have the function to transport ABA.

Key words: tea plant, CsNPF6.1, CsNPF6.3, gene cloning, ABA transport