ArticleBMC plant biology2026
Genome-wide identification of the ATL gene family and their expression analysis in sweetpotato and its two diploid relatives.
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundProtein ubiquitination is a critical regulatory mechanism in plants, governing essential biological processes such as growth, development, and the response to stress by mediating the degradation of specific proteins. E3 ubiquitin ligases play a key role in this process. Among them, the Arabidopsis Tóxicos en Levadura (ATL) family of proteins functions as an E3 ubiquitin ligase and plays a critical role in plant growth, development, and stress responses. Sweetpotato (Ipomoea batatas (L.) Lam.), a globally significant food and energy crop, has benefited from genome sequencing, enabling the comprehensive identification and functional analysis of the ATL gene family.
resultsIn this study, we identified 85, 99, and 97 ATL genes in sweetpotato (Ipomoea batatas, 2n = 6x = 90) and its two diploid relatives, Ipomoea trifida and Ipomoea triloba (both 2n = 2x = 30), respectively. Phylogenetic analysis revealed that these ATL genes were clustered into six distinct subgroups. We then systematically studied the ATL gene family, including its physicochemical properties, chromosomal localization, phylogenetic relationships, collinearity, gene structures, promoter cis-elements, protein-protein interaction network, and expression patterns.
conclusionsThrough a comprehensive genome-wide analysis of ATL genes in sweetpotato and its two diploid relatives, we identified a total of 281 ATL genes from sweetpotato, Ipomoea trifida, and Ipomoea triloba. Subsequently, we performed a systematic bioinformatic analysis of the ATL family. We further examined their expression patterns in response to hormonal and abiotic stress treatments. The analysis revealed that members of the ATL gene family play distinct and crucial roles in hormone signaling and abiotic stress responses within sweetpotato and its two diploid relatives. These findings lay the groundwork for further investigation into the abiotic stress response mechanisms of ATL genes in sweetpotato.
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