Genome-Wide Investigation of NAC Transcription Factors and Their Response to Cold Stress in Rubber Tree (Hevea brasiliensis)

文献类型： 外文期刊

第一作者： Yang, Bingsong

作者： Yang, Bingsong;Zhang, Chao;Yang, Jingjing;Liang, Meixia;Yang, Bingsong;Zhang, Chao;Liang, Meixia;An, Zewei

作者机构：

关键词： Rubber tree; NAC transcription factor; Cold stress; Expression pattern

期刊名称：JOURNAL OF PLANT GROWTH REGULATION （ 影响因子：4.8； 五年影响因子：4.8 ）

ISSN： 0721-7595

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Hevea brasiliensis is an evergreen woody tree widely used in industrial production in tropical rain forest. However, rubber trees are extremely vulnerable to low temperature stress, which seriously limits the cultivation and use of rubber trees in low temperature areas. NAC transcription factor gene family is common to many plant species, and can participate in a variety of behaviors that are crucial for plants to cope with the challenges from the environment. However, little is known about the evolution history, function and expression patterns of NAC family in rubber trees. Here, 51 HbNAC genes were identified in rubber tree by genome search, and they were divided into 11 subclasses according to phylogenetic relationship. The members of a subfamily share a similar number of introns and exons. We conducted transcriptome analyses to obtain cold-responsive HbNACs, and the transcriptome data showed the expression of HbNAC26 and HbNAC11 was significantly induced by cold stress, suggesting a potential role of these genes in cold stress. The expression pattern of HbNACs in different tissues and different developmental stages was studied by real-time PCR. In addition, the complementary effect of defective yeast mutants indicated that the HbNAC11 gene could be a positive regulator of cold stress in rubber trees. The results of this study can lay a foundation for studying the biological function of NAC and improving cold resistance breeding of rubber trees.

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