Os08g0442700

The rice gene Os08g0442700 was reported as coe1 in 2010 by researchers from Japan.

Annotated Information

Gene Symbol

• Os08g0442700 <=> COE1，OSCOE1

Function

• COE1 encodes a leucine-rich repeat receptor-like kinase, whose amino acid sequence is similar to that of brassinosteroid-insensitive 1-associated receptor kinase 1 (BAK1), and which is localized at the plasma membrane.
• Auxin and brassinosteroids regulate CV intervals in opposite directions, and COE1 may regulate CV intervals downstream of auxin and brassinosteroid signals.

Mutation

• The coe1 mutants had short commissural vein (CV) intervals and produced clustered CVs.
• Application of 1-N-naphthylphthalamic acid and brefeldin A decreased CV intervals, and application of 1-naphthaleneacetic acid increased CV intervals in wild-type rice; however, coe1 mutants were insensitive to these chemicals.
• Brassinolide, an active brassinosteroid, decreased the CV intervals of wild-type rice, and brassinazole, an inhibitor of brassinosteroid biosynthesis, increased the CV intervals of wild-type rice, but coe1 mutants showed insensitivity to these chemicals.

Expression

• COE1 is preferentially expressed in leaf blades and flowers.

Evolution

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Labs working on this gene

• Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan,
• Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Science, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan,
• Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan
• Bioscience and Biotechnology Center, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan