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Int. J. Mol. Sci. 2015, 16(9), 21695-21710;

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

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
Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Tropical Crop Bioscience and Biotechnology, Ministry of Agriculture, Haikou 571101, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Jianhua Zhu
Received: 9 May 2015 / Revised: 23 August 2015 / Accepted: 25 August 2015 / Published: 9 September 2015
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
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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”. View Full-Text
Keywords: Citrus reticulata Blanco; self-incompatibility; SKP1; genetic transformation Citrus reticulata Blanco; self-incompatibility; SKP1; genetic transformation

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Li, P.; Miao, H.; Ma, Y.; Wang, L.; Hu, G.; Ye, Z.; Zhao, J.; Qin, Y. CrWSKP1, an SKP1-like Gene, Is Involved in the Self-Incompatibility Reaction of “Wuzishatangju” (Citrus reticulata Blanco). Int. J. Mol. Sci. 2015, 16, 21695-21710.

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