ArticleBMC plant biology2024
Comparative analysis of the LEA gene family in seven Ipomoea species, focuses on sweet potato (Ipomoea batatas L.).
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 7 papers.
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Who cites it
7 citing papers in PubMed.
- Integrated transcriptomic and metabolomic analyses reveal drought-response mechanisms in Suriana maritima from tropical coral islands.BMC plant biology · 2026Article
- Genome-wide identification, evolution, and expression pattern analysis of the LEA gene family in Tartary Buckwheat (Fagopyrum tataricum).BMC genomics · 2026Article
- Genome-wide comparative analysis of the HSP90 gene family in four Ipomoea species and functional insights into the potentiality of IbHSP90-2 in low temperature tolerance.Frontiers in plant science · 2026Article
- Transgenic validation of a promoter strongly inducible by Agrobacterium tumefaciens.Scientific reports · 2025Article
- Genome-Wide Identification of theGenes · 2025Article
- Article
- LEA proteins and ABA signaling: reciprocal regulation in stress adaptation.Frontiers in plant science · 2025Review
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6 authors.
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Abstract
Late Embryogenesis Abundant (LEA) proteins are extensively distributed among higher plants and are crucial for regulating growth, development, and abiotic stress resistance. However, comprehensive data regarding the LEA gene family in Ipomoea species remains limited. In this study, we conducted a genome-wide comparative analysis across seven Ipomoea species, including sweet potato (I. batatas), I. trifida, I. triloba, I. nil, I. purpurea, I. cairica, and I. aquatica, identifying 73, 64, 77, 62, 70, 70, and 74 LEA genes, respectively. The LEA genes were divided into eight subgroups: LEA_1, LEA_2, LEA_3, LEA_4, LEA_5, LEA_6, SMP, and Dehydrin according to the classification of the LEA family in Arabidopsis. Gene structure and protein motif analyses revealed that genes within the same phylogenetic group exhibited comparable exon/intron structures and motif patterns. The distribution of LEA genes across chromosomes varied among the different Ipomoea species. Duplication analysis indicated that segmental and tandem duplications significantly contributed to the expansion of the LEA gene family, with segmental duplications being the predominant mechanism. The analysis of the non-synonymous (Ka) to synonymous (Ks) ratio (Ka/Ks) indicated that the duplicated Ipomoea LEA genes predominantly underwent purifying selection. Extensive cis-regulatory elements associated with stress responses were identified in the promoters of LEA genes. Expression analysis revealed that the LEA gene exhibited widespread expression across diverse tissues and showed responsive modulation to various abiotic stressors. Furthermore, we selected 15 LEA genes from sweet potatoes for RT-qPCR analysis, demonstrating that five genes responded to salt stress in roots, while three genes were responsive to drought stress in leaves. Additionally, expression changes of seven genes varied at different stages of sweet potato tuber development. These findings enhanced our understanding of the evolutionary dynamics of LEA genes within the Ipomoea genome and may inform future molecular breeding strategies for sweet potatoes.
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