Evolutionary Conservation and Regulatory Diversification of <i>AS1</i> Homologs in Soybean.

ABSTRACT: The establishment of dorsoventral polarity is a critical step in leaf morphogenesis, enabling the transition from radial primordia to flattened laminae. The MYB domain transcription factor ASYMMETRIC LEAVES1 (AS1) plays a central role in this process by regulating leaf polarity and developmental transitions, primarily through the repression of Class I KNOX genes. Here, four AS1 paralogs were identified in soybean (Glycine max), two of which showed collinearity with Arabidopsis thaliana and Medicago truncatula. The AS1 proteins of soybean and Arabidopsis exhibit high conservation, whereas the four GmAS1 genes in soybean display different tissue-specific expression patterns. Strikingly, each GmAS1 gene was able to fully re

SUBMITTER: Wang D 

PROVIDER: S-EPMC12652363 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature