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Genome-Wide Identification and Expression of the PIN Auxin Efflux Carrier Gene Family in Watermelon (Citrullus lanatus)

文献类型： 外文期刊

作者： Shang, Huaiguo 1 ; Zhang, Na 2 ; Xie, Zhouli 3 ; Deng, Siyu 4 ; Yi, Licong 5 ; Huang, Xing 6 ;

作者机构： 1.Natl Agrotech Extens & Serv Ctr, Beijing 100125, Peoples R China

2.Wuhan Acad Agr Sci, Inst Crop Sci, Wuhan 430345, Peoples R China

3.Peking Univ, Sch Life Sci, Beijing 100871, Peoples R China

4.Univ Hong Kong, Sch Biol Sci, Hong Kong 999077, Peoples R China

5.Hubei Acad Agr Sci, Inst Cash Crops, Hubei Key Lab Vegetable Germplasm Enhancement & G, Wuhan 430064, Peoples R China

6.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Hainan, Peoples R China

7.Minist Agr & Rural Affairs, Key Lab Integrated Pest Management Trop Crops, Haikou 571101, Hainan, Peoples R China

8.Hainan Key Lab Monitoring & Control Trop Agr Pest, Haikou 571101, Hainan, Peoples R China

关键词： PIN family; auxin efflux carrier; phylogenetic analysis; expression; shoot regeneration watermelon; cucumber; melon

期刊名称：AGRICULTURE-BASEL （ 影响因子：2.925； 五年影响因子：3.044 ）

ISSN：

年卷期： 2021 年 11 卷 5 期

页码：

收录情况： SCI

摘要： As one of the world's most popular fruits, watermelon (Citrus lanatus) is cultivated in more than 3 million hectares across the globe, with a yearly yield of more than 100 million tons. According to '97103' genome version 1, a previous study has shown that the watermelon genome consists of 11 PIN genes. However, the higher quality '97103' genome version 2 was recently assembled by using PacBio long reads with the benefit of fast development sequencing technology. Using this new assembly, we conducted a new genome-wide search for PIN genes in watermelon and compared it with cucumber and melon genomes. We identified nine, nine, and eight PINs in watermelon, cucumber, and melon, respectively. Phylogenetic analysis revealed a distinct evolutionary history of PIN proteins in watermelon, which is shown by the orphan PIN6 in watermelon. We further conducted an expression analysis of the watermelon PIN genes in silico and by qRT-PCR. ClaPIN6 might not play an essential role during shoot regeneration, which is closely related to species-specific evolution. However, the up-regulated expression patterns of ClaPIN1-1 and ClaPIN1-3 indicated their important roles during shoot regeneration. The result of this research will benefit future studies to understand the regulating mechanisms of auxin in watermelon shoot regeneration.

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