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Genome-Wide Identification of Aquaporin Gene Family in Pitaya Reveals an HuNIP6;1 Involved in Flowering Process

文献类型： 外文期刊

作者： Ye, Xiaoying 1 ; Gao, Yongshun 3 ; Chen, Canbin 1 ; Xie, Fangfang 1 ; Hua, Qingzhu 1 ; Zhang, Zhike 1 ; Zhang, Rong 1 ; Z 1 ;

作者机构： 1.South China Agr Univ, Guangdong Prov Key Lab Postharvest Sci Fruits & V, Key Lab Biol & Genet Improvement Hort Crops South, Minist Agr & Rural Affairs,Coll Hort, Guangzhou 510642, Peoples R China

2.Guangxi Acad Agr Sci, Nanning 530007, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Forestry & Pomol, Beijing 100097, Peoples R China

关键词： pitaya; aquaporin; genome-wide identification; HuNIP6; 1; early flowering

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 2020影响因子：5.924； 五年影响因子：6.132 ）

ISSN：

年卷期： 2021 年 22 卷 14 期

页码：

收录情况： SCI

摘要： Aquaporins (AQPs) are essential membrane proteins involved in seed maturation and germination, stomata movement, photosynthesis, and regulation of plant flowering processes. Pitaya flowers are open at night and wither at daybreak, which shows an obvious circadian rhythm. In this study, a comprehensive genome-wide analysis of AQPs in Hylocereus undantus was conducted to screen key genes associated with flowering processes. A total of 33 HuAQP genes were identified from the H. undantus genome. The 33 HuAQPs were grouped into four subfamilies: 10 PIPs, 13 TIPs, 8 NIPs, and 2 SIPs, which were distributed on 9 out of 11 pitaya chromosomes (Chr) (except for Chr7 and Chr10). Results from expression profiles showed that HuNIP6;1 may be involved in pitaya's floral opening. HuNIP6;1 was localized exclusively in the cell membrane. Overexpression of HuNIP6;1 in Arabidopsis thaliana significantly promoted early flowering through regulating negative flowering regulators of MJM30, COL9, and PRR5, suggesting that HuNIP6;1 plays key roles in regulating flowering time. The present study provides the first genome-wide analysis of the AQP gene family in pitaya and valuable information for utilization of HuAQPs.

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