Sugar signaling modulates SHOOT MERISTEMLESS expression and meristem function in Arabidopsis.

ABSTRACT: In plants, development of all above-ground tissues relies on the shoot apical meristem (SAM) which balances cell proliferation and differentiation to allow life-long growth. To maximize fitness and survival, meristem activity is adjusted to the prevailing conditions through a poorly understood integration of developmental signals with environmental and nutritional information. Here, we show that sugar signals influence SAM function by altering the protein levels of SHOOT MERISTEMLESS (STM), a key regulator of meristem maintenance. STM is less abundant in inflorescence meristems with lower sugar content, resulting from plants being grown or treated under limiting light conditions. Additionally, sucrose but not light is sufficient to sustain STM accumulation in excised inflorescences. Plants

SUBMITTER: Lopes FL 

PROVIDER: S-EPMC11406306 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature