Identification and Characterization of Trihelix Transcription Factors and Expression Changes during Flower Development in Pineapple
文献类型： 外文期刊
作者： Wang, Jing 1 ; Ouyang, Yanwei 1 ; Wei, Yongzan 2 ; Kou, Jingjing 1 ; Zhang, Xiaohan 1 ; Zhang, Hongna 1 ;
作者机构： 1.Hainan Univ, Hort Coll, Key Lab Qual Control Trop Hort Crops Hainan Prov, Haikou 570228, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Minist Agr, Haikou 571101, Hainan, Peoples R China
关键词： Trihelix; pineapple (Ananas comosus (L.) Merr.); expression profiling; flower development; floral organ
期刊名称：HORTICULTURAE （ 影响因子：2.923； 五年影响因子：3.582 ）
ISSN：
年卷期： 2022 年 8 卷 10 期
页码：
收录情况： SCI
摘要： Trihelix transcription factors with helix-loop-helix-loop-helix characteristics are essential in plant growth, development, and response to adversity. Several potential functions of Trihelix have been studied in multiple plant species, but little is known about the features and functions of Trihelix genes in pineapple. In this study, 23 Trihelix members were identified and classified into 5 groups and were unevenly distributed in 17 chromosomes of pineapple. The results revealed that six fragment duplication events and one tandem duplication event were found through gene duplication analysis. Moreover, 4, 10, 21, and 23 homologous gene pairs were found between pineapple and Arabidopsis, grape, banana, and rice, respectively. The promoters of Trihelix have many cis-elements, especially in light and hormone response. The expression characteristics of AcTrihelix members showed obvious tissue specificities in different tissues. The expressions of AcTrihelix3, AcTrihelix8, AcTrihelix16, AcTrihelix19, AcTrihelix20, and AcTrihelix23 were maintained at high levels during the late stage of flower bud development. In floral organs, the expression of different members was very different. In conclusion, some AcTrihelix members may play important roles during the floral development of pineapple, and they provide resources for further studies of the function of Trihelix and the molecular mechanism during pineapple flower formation.
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