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Author Kawakatsu,T., Taramino,G., Itoh,J., Allen,J., Sato,Y., Hong,S.-K., Yule,R., Nagasawa,N., Kojima,M., Kusaba,M., Sakakibara,H., Sakai,H. and Nagato,Y.
Title PLASTOCHRON3/GOLIATH encodes a glutamate carboxypeptidase required for proper development in rice
Abstract:
Most aerial parts of the plant body are products of the continuous activity of the shoot apical meristem (SAM). Leaves are the major component of the aerial plant body, and their temporal and spatial distribution mainly determines shoot architecture. Here we report the identification of the rice gene PLASTOCHRON3 (PLA3)/GOLIATH (GO) that regulates various developmental processes including the rate of leaf initiation (the plastochron). PLA3/GO encodes a glutamate carboxypeptidase, which is thought to catabolize small acidic peptides and produce small signaling molecules. pla3 exhibits similar phenotypes to pla1 and pla2- a shortened plastochron, precocious leaf maturation and rachis branch-to-shoot conversion in the reproductive phase. However, in contrast to pla1 and pla2, pla3 showed pleiotropic phenotypes including enlarged embryo, seed vivipary, defects in SAM maintenance and aberrant leaf morphology. Consistent with these pleiotropic phenotypes, PLA3 is expressed in the whole plant body, and is involved in plant hormone homeostasis. Double mutant analysis revealed that PLA1, PLA2 and PLA3 are regulated independently but function redundantly. Our results suggest that PLA3 modulates various signaling pathways associated with a number of developmental processes.
Journal Plant J.
Country Japan
Volume 58(6)
Pages 1028-1040
Year 2009
PubMed ID 19228340
PubMed Central ID -
DOI 10.1111/j.1365-313X.2009.03841.x
URL -
Relation
Gene GO PLA1 PLA2
INSD AB447403
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
-
Stages in Each Organ
- Muant Lines (Gene)
-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase