Genetic and Epigenetic Regulation of Stem Cell Homeostasis in Plants | Zendy

Mukesh Lodha | Zendy; Cristina F. Marco | Zendy; Marja C.P. Timmermans | Zendy

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Genetic and Epigenetic Regulation of Stem Cell Homeostasis in Plants

Author(s) -

Mukesh Lodha,

Cristina F. Marco,

Marja C.P. Timmermans

Publication year - 2008

Publication title -

cold spring harbor symposia on quantitative biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.615

H-Index - 77

eISSN - 1943-4456

pISSN - 0091-7451

DOI - 10.1101/sqb.2008.73.044

Subject(s) - biology , stem cell , epigenetics , microbiology and biotechnology , meristem , cellular differentiation , organogenesis , cell fate determination , chromatin , genetics , transcription factor , gene

Plants generate new organs through the activity of small populations of stem cells present in specialized niches called meristems. Stem cell homeostasis is attained by dynamic regulatory networks involving transcriptional regulators, hormones, and other intercellular signals that specify cell fate and convey positional information to the apical stem cells and the organizing center located immediately below. The balance between stem cell maintenance within the shoot apical meristem (SAM) and differentiation of cells that are displaced from the niche to form new organs involves the epigenetic silencing of stem cell regulatory genes. Recent advances have identified highly conserved chromatin remodeling factors as epigenetic regulators of stem cell fate that confer plasticity in plant development and ensure the stable inheritance of repressed expression states during organogenesis. These advances reveal that common mechanisms contribute to stem cell homeostasis in plants and animals.

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