Passion fruit HD-ZIP genes: Characterization, expression variance, and overexpression PeHB31 enhanced drought tolerance via lignin pathway
文献类型： 外文期刊
作者： Ma, Funing 1 ; Song, Shun 1 ; Li, Chuanlin 3 ; Huang, Dongmei 1 ; Wu, Bin 1 ; Xing, Wenting 1 ; Huang, Haijie 1 ; Tan, Yuxin 1 ; Xu, Yi 1 ;
作者机构： 1.CATAS, Natl Key Lab Trop Crop Breeding, Hainan Key Lab Biosafety Monitoring & Mol Breeding, Sanya Res Inst,Trop Crops Genet Resources Inst,Ger, Hainan 571101, Peoples R China
2.Minist Agr & Rural Affairs, Lab Crop Gene Resources & Germplasm Enhancement So, Key Lab Trop Crops Germplasm Resources Genet Impro, Haikou 571101, Peoples R China
3.Sanya Inst Technol, Sanya 572099, Peoples R China
4.Hainan Seed Ind Lab, Sanya 572024, Peoples R China
关键词： Transcription factor; Passiflora edulis; Abiotic stress
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：7.7； 五年影响因子：7.7 ）
ISSN： 0141-8130
年卷期： 2024 年 276 卷
页码：
收录情况： SCI
摘要： The HD-ZIP (homeodomain-leucine zipper) genes hold significant importance in transcriptional regulation, especially in plant development and responses to abiotic stresses. However, a comprehensive study targeting HD- ZIP family members in passion fruit has been absent. In our current research, 34 HD-ZIP family members (PeHBs) were identified by bioinformatics analysis. Transcriptome analysis revealed that PeHBs exhibited distinct expression patterns when subjected to the four different abiotic stresses, and significant differential expression of PeHBs was also found among the three developmental stages of the fruit and between the purple and yellow genotype passion fruit leaves. An integrated metabolome and transcriptome analysis further revealed that the HD-ZIP III class gene PeHB31 (homologous to ATHB8), was co-upexpressed with lignans in yellow fruit P. edulis (commonly used as a resistance rootstock) when compared to purple fruit P. edulis. . The transformation of Arabidopsis and yeast with the PeHB31 gene showed an enhancement in their capacity to withstand drought conditions. Notably, the transgenic Arabidopsis plants exhibited an increase in lignin content within the vascular tissues of their stems. This research lays the groundwork for future studies on the control mechanisms of lignin biosynthesis by HD-ZIP genes (especially HD-ZIP classes III and I) involved in drought tolerance.
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