Reference "Genetic control of rice plant architecture under domestication"

Reference ID

25483

Title

Genetic control of rice plant architecture under domestication

Source

Nature genetics, 2008, vol. , pp. -

Authors (8)

Jin-J	Huang-W
Gao-J-P	Yang-J
Shi-M	Zhu-M-Z
Luo-D	Lin-H-X

Abstract

The closely related wild rice species Oryza rufipogon is considered the
progenitor of cultivated rice (Oryza sativa). The transition from the
characteristic plant architecture of wild rice to that of cultivated rice was
one of the most important events in rice domestication; however, the molecular
basis of this key domestication transition has not been elucidated. Here we show
that the PROG1 gene controls aspects of wild-rice plant architecture, including
tiller angle and number of tillers. The gene encodes a newly identified zinc-
finger nuclear transcription factor with transcriptional activity and is mapped
on chromosome 7. PROG1 is predominantly expressed in the axillary meristems, the
site of tiller bud formation. Rice transformation experiments demonstrate that
artificial selection of an amino acid substitution in the PROG1 protein during
domestication led to the transition from the plant architecture of wild rice to
that of domesticated rice.