Plant stem cells and their regulations in shoot apical meristems
Received date: 07 Sep 2010
Accepted date: 16 Sep 2010
Published date: 01 Oct 2010
Copyright
Stem cells in plants, established during embryogenesis, are located in the centers of the shoot apical meristem (SAM) and the root apical meristem (RAM). Stem cells in SAM have a capacity to renew themselves and to produce new organs and tissues indefinitely. Although fully differentiated organs such as leaves do not contain stem cells, cells in such organs do have the capacity to re-establish new stem cells, especially under the induction of phytohormones in vitro. Cytokinin and auxin are critical in creating position signals in the SAM to maintain the stem cell organizing center and to position the new organ primordia, respectively. This review addresses the distinct features of plant stem cells and focuses on how stem cell renewal and differentiation are regulated in SAMs.
Key words: plant; stem cell; shoot apical meristem; root apical meristem
Chun-Ming LIU , Yuxin HU . Plant stem cells and their regulations in shoot apical meristems[J]. Frontiers in Biology, 2010 , 5(5) : 417 -423 . DOI: 10.1007/s11515-010-0880-1
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