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Identification of aluminum-activated malate transporters (ALMT) family genes in hydrangea and functional characterization of HmALMT5/9/11 under aluminum stress

文献类型： 外文期刊

作者： Qin, Ziyi 1 ; Chen, Shuangshuang 2 ; Feng, Jing 2 ; Chen, Huijie 2 ; Qi, Xiangyu 2 ; Wang, Huadi 2 ; Deng, Yanming 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Hort, Nanjing, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Leisure Agr, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing, Jiangsu, Peoples R China

3.Jiangsu Univ, Sch Life Sci, Zhenjiang, Jiangsu, Peoples R China

关键词： ALMT family; Hydrangea; Al tolerance; Gene expression

期刊名称：PEERJ （ 影响因子：3.061； 五年影响因子：3.537 ）

ISSN： 2167-8359

年卷期： 2022 年 10 卷

页码：

收录情况： SCI

摘要： Hydrangea (Hydrangea macrophylla (Thunb.) Ser.) is a famous ornamental plant species with high resistance to aluminum (Al). The aluminum-activated malate transporter (ALMT) family encodes anion channels, which participate in many physiological processes, such as Al tolerance, pH regulation, stomatal movement, and mineral nutrition. However, systematic studies on the gene family have not been reported in hydrangea. In this study, 11 candidate ALMT family members were identified from the transcriptome data for hydrangea, which could be divided into three clusters according to the phylogenetic tree. The protein physicochemical properties, phylogeny, conserved motifs and protein structure were analyzed. The distribution of base conservative motifs of HmALMTs was consistent with that of other species, with a highly conserved WEP motif. Furthermore, tissue-specific analysis showed that most of the HmALMTs were highly expressed in the stem under Al treatment. In addition, overexpression of HmALMT5, HmALMT9 and HmALMT11 in yeasts enhanced their tolerance to Al stress. Therefore, the above results reveal the functional role of HmALMTs underlying the Al tolerance of hydrangea. The present study provides a reference for further research to elucidate the functional mechanism and expression regulation of the ALMT gene family in hydrangea.

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