Overexpression of a CYP94 Family Gene CYP94C2b Increases Internode Length and Plant Height in Rice

Overview

Journal Plant Signal Behav

Specialty Biology

Date 2015 Aug 8

PMID 26251886

Citations 9

Authors

Ken-Ich Kurotani

Tsukaho Hattori

Shin Takeda

Affiliations

Soon will be listed here.

Abstract

Plant growth is controlled by intrinsic developmental programmes and environmental cues. Jasmonate (JA) has important roles in both processes, by regulating cell division and differentiation, as well as in defense responses and senescence. We report an increase in rice plant height caused by overexpression of a gene encoding a cytochrome P450 enzyme, CYP94C2b, which promoted deactivation of JA-Ile. The height increase occurred through enhanced elongation of internodes in the absence of concomitant cell elongation, unlike previous findings with coi1 knock-down plants. Thus, modulating JA metabolism can increase the number of elongated cells in an internode. Based on these and previous findings, we discuss the difference in the effects of CYP94C2b overexpression vs. coi1 knock-down.

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