Expression analyses of CUP-SHAPED COTYLEDON and SHOOT MERISTEMLESS in the one-leaf plant Monophyllaea glabra reveal neoteny evolution of shoot meristem.

ABSTRACT: The one-leaf plant Monophyllaea glabra exhibits a unique developmental manner in which only one cotyledon continues growing without producing new vegetative organs. This morphology is formed by specific meristems, the groove meristem (GM) and the basal meristem (BM), which are thought to be modified shoot apical meristem (SAM) and leaf meristem. In this study, we analysed the expression of the organ boundary gene CUP-SHAPED COTYLEDON (CUC) and the SAM maintenance gene SHOOT MERISTEMLESS (STM) orthologs by whole-mount in situ hybridisation. We found that CUCs did not show clear border patterns around GM and BM during the vegetative phase. Furthermore, double-colour detection analysis at the cellular level revealed that CUC and STM expression overlapped in the GM region during the vegetative

SUBMITTER: Nakamura S 

PROVIDER: S-EPMC11096313 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature