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Genome-Wide Analysis of the YABBY Transcription Factor Family in Pineapple and Functional Identification of AcYABBY4 Involvement in Salt Stress

文献类型： 外文期刊

作者： Li, Zeyun 1 ; Li, Gang 3 ; Cai, Mingxing 1 ; Priyadarshani, Samaranayaka V. G. N. 1 ; Aslam, Mohammad 1 ; Zhou, Qia 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Minist Educ, Key Lab Genet Breeding & Multiple Utilizat Crops, Fuzhou 350002, Fujian, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Life Sci, State Key Lab Ecol Pest Control Fujian & Taiwan C, Fuzhou 350002, Fujian, Peoples R China

3.Fujian Agr & Forestry Univ, Coll Agr, Fuzhou 350002, Fujian, Peoples R China

4.Guangxi Univ, Coll Agr, Guangxi Key Lab Sugarcane Biol, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning 530004, Peoples R China

5.Guangxi Acad Agr Sci, Minist Agr, Nanning Invest Stn South Subtrop Fruit Trees, Hort Res Inst, Nanning 530007, Peoples R China

关键词： YABBY; pineapple; expression pattern; subcellular localization; abiotic stress

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN：

年卷期： 2019 年 20 卷 23 期

页码：

收录情况： SCI

摘要： The plant-specific transcription factor gene family, YABBY, belongs to the subfamily of zinc finger protein superfamily and plays an essential regulatory role in lateral organ development. In this study, nine YABBY genes were identified in the pineapple genome. Seven of them were located on seven different chromosomes and the remaining two were located on scaffold 1235. Through protein structure prediction and protein multiple sequence alignment, we found that AcYABBY3, AcYABBY5 and AcYABBY7 lack a C2 structure in their N-terminal C2C2 zinc finger protein structure. Analysis of the cis-acting element indicated that all the seven pineapple YABBY genes contain multiple MYB and MYC elements. Further, the expression patterns analysis using the RNA-seq data of different pineapple tissues indicated that different AcYABBYs are preferentially expressed in various tissues. RT-qPCR showed that the expression of AcYABBY2, AcYABBY3, AcYABBY6 and AcYABBY7 were highly sensitive to abiotic stresses. Subcellular localization in pineapple protoplasts, tobacco leaves and Arabidopsis roots showed that all the seven pineapple YABBY proteins were nucleus localized. Overexpression of AcYABBY4 in Arabidopsis resulted in short root under NaCl treatment, indicating a negative regulatory role of AcYABBY4 in plant resistance to salt stress. This study provides valuable information for the classification of pineapple AcYABBY genes and established a basis for further research on the functions of AcYABBY proteins in plant development and environmental stress response.

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