Shoot Meristem Formation in Vegetative Development.
نویسندگان
چکیده
منابع مشابه
Shoot Meristem Formation in Vegetative Development.
The majority of the plant body is derived from the activities of groups of specialized cells, known as apical meristems, at the growing tips. In a typical flowering plant, the shoot apical meristem (SAM) gives rise to the bulk of the above-ground portion of the plant, whereas root meristems give rise to the bulk of the subterranean plant body. Of course, not all plants are typical, and numerous...
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The shoot apical meristem of higher plants is a self-maintaining stem cell system which gives rise to the entire above-ground part of a plant. In the past year, genetic and molecular studies have provided increasing insight into the processes of shoot meristem formation and maintenance, as well as into the relation between the apical meristem and its products.
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Development of the plant shoot is dependent on the shoot apical meristem. Interactions between KNOX homeodomain transcription factors and the myb domain transcription factor AS1 (ASYMMETRIC LEAVES1) regulate both meristem function as well as leaf patterning. This review summarizes these interactions.
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Most plant organs develop from meristems. Rice FON1, which is an ortholog of Clv1, regulates stem cell proliferation and organ initiation. The point muta-tions, fon1-1 and fon1-2, disrupt meristem balance, resulting in alteration of floral organ numbers and the architecture of primary rachis branches. In this study, we identified two knockout alleles, fon1-3 and fon1-4, generated by T-DNA and T...
متن کاملFormation and maintenance of the shoot apical meristem.
Development in higher plants is characterized by the reiterative formation of lateral organs from the flanks of shoot apical meristems. Because organs are produced continuously throughout the life cycle, the shoot apical meristem must maintain a pluripotent stem cell population. These two tasks are accomplished within separate functional domains of the apical meristem. These functional domains ...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 1997
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.9.7.1001