CrWSKP1, an SKP1-like Gene, Is Involved in the Self-Incompatibility Reaction of “Wuzishatangju” (Citrus reticulata Blanco)

International Journal of Molecular Sciences

Peng Li¹  Hongxia Miao¹  Yuewen Ma¹  Lu Wang¹  Guibing Hu¹  Zixing Ye¹  Jietang Zhao¹  Yonghua Qin¹ 

[1] State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China, Ministry of Agriculture, College of Horticulture, South China Agricultural University, Guangzhou 510642, China; E-Mails:

关键词: Citrus reticulata Blanco;    self-incompatibility;    SKP1;    genetic transformation;   

DOI  :  10.3390/ijms160921695

来源: mdpi

【 摘 要 】

Plant S-phase kinase-associated protein 1 (SKP1) genes play crucial roles in plant development and differentiation. However, the role of SKP1 in citrus is unclear. Herein, we described a novel SKP1-like gene, designated as CrWSKP1, from “Wuzishatangju” (Citrus reticulata Blanco). The cDNA sequence of CrWSKP1 is 779 base pairs (bp) and contains an open reading frame (ORF) of 477 bp. The genomic sequence of the CrWSKP1 gene is 1296 bp with two exons and one intron. CrWSKP1 has high identity with SKP1-like genes from other plant species within two conserved regions. Approximately 85% of pollen tubes of self-pollinated CrWSKP1 transgenic tobaccos became twisted at four days after self-pollination. Pollen tube numbers of self-pollinated CrWSKP1 transformants entering into ovules were significantly fewer than that of the control. Seed number of self-pollinated CrWSKP1 transformants was significantly reduced. These results suggested that the CrWSKP1 is involved in the self-incompatibility (SI) reaction of “Wuzishatangju”.

【 授权许可】

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