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Introduction The transition from vegetative to reproductive development is

Summary: 5471
The transition from vegetative to reproductive development is
a highly regulated event in the plant life cycle, involving the
perception and integration of a variety of endogenous signals
and environmental cues. The ability to coordinate these
cues permits plants to flower during times that maximize
reproductive success. Summer-annual accessions of
Arabidopsis thaliana complete the life cycle in a single
growing season; when grown in the laboratory under long day-
length conditions that are inductive for flowering, such
accessions are often rapid cycling. By contrast, winter-annual
accessions of Arabidopsis typically begin vegetative growth in
the fall and transition to flowering the following spring. A
crucial feature of the winter-annual habit is a vernalization
requirement for rapid spring flowering. Vernalization is the
acquisition of competence to flower that is achieved by long
periods of cold exposure. A vernalization requirement prevents
untimely flowering in the fall before the onset of winter, and
also permits rapid flowering in the spring after the cold of


Source: Amasino, Richard M. - Department of Biochemistry, University of Wisconsin at Madison


Collections: Biology and Medicine