ArticleBMC plant biology2024
Identification of WRKY transcription factors in Ipomoea pes-caprae and functional role of IpWRKY16 in sweet potato salt stress response.
Article in BMC plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Role of phytohormones and nanomaterials in enhancing plant tolerance to abiotic stress.Frontiers in plant science · 2026Review
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8 authors.
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Abstract
backgroundWRKY transcription factors are plant-specific and play essential roles in growth, development, and stress responses, including reactions to salt, drought, and cold. Despite their significance, the WRKY genes in the wild sweet potato ancestor, Ipomoea pes-caprae, remain unexplored.
resultsIn this study, 65 WRKY genes were identified in the I. pes-caprae transcriptomic data. A phylogenetic tree incorporating Arabidopsis thaliana and Ipomoea batatas revealed seven major groups, each characterized by conserved gene structural features. Transcriptome data of I. pes-caprae under salt stress conditions identified 17 highly expressed WRKY genes, whose promoter regions contain cis-acting elements associated with plant growth, stress responses, and hormone signaling. Further analysis revealed that the 17 IpWRKY genes exhibited differential expression patterns under various abiotic stresses, suggesting their potential roles in specific stress responses. The gene IpWRKY16 was significantly up-expressed under salt stress, drought, salicylic acid (SA), and abscisic acid (ABA) treatments. Subcellular localization analysis confirmed that IpWRKY16 is located in the nucleus. Under salt stress, IpWRKY16 overexpressing roots showed high activity in superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and low content in malondialdehyde (MDA). Using non-invasive micro-test technology (NMT), a significant efflux of Na
conclusionsThis study provides a foundational understanding of WRKY transcription factors in I. pes-caprae, offering insights into their potential role in enhancing salt-tolerance in sweet potato. Our findings contribute valuable genetic knowledge that could aid in the molecular breeding of stress-resilient sweet potato varieties.
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