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Molecular genetic studies of the memory of winter Sibum Sung and Richard M. Amasino*
 

Summary: Molecular genetic studies of the memory of winter
Sibum Sung and Richard M. Amasino*
Department of Biochemistry, 433 Babcock Drive, University of Wisconsin at Madison, Madison, WI 53706, USA
Received 19 May 2005; Accepted 30 June 2006
Abstract
Many plant species have evolved the ability to flower
in the proper season by sensing environmental cues.
The prolonged cold of winter is one such cue that
certain plants use to acquire competence to flower the
following spring. For example, biennials and winter
annuals become established in one growing season
and often flower quickly in the early spring of the
following year to complete their life cycles. The pro-
cess by which exposure to prolonged cold establishes
competence to flower is known as vernalization. Many
studies, starting with the classic work of Lang and
Melchers, have shown that the vernalized state can be
stable; i.e. after exposure to cold has ended, compe-
tence to flower, in certain species, can persist for many
months and throughout many cell divisions in the

  

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

 

Collections: Biology and Medicine