ABA-Independent Expression of Rice Alternative Oxidase Genes under Environmental Stresses

Kazuhiro OHTSU; Yusuke ITO; Hiroaki SAIKA; Mikio NAKAZONO; Nobuhiro TSUTSUMI; Atsushi HIRAI

doi:10.5511/plantbiotechnology.19.187

Short Communication

ABA-Independent Expression of Rice Alternative Oxidase Genes under Environmental Stresses

Kazuhiro OHTSU, Yusuke ITO, Hiroaki SAIKA, Mikio NAKAZONO, Nobuhiro TSUTSUMI, Atsushi HIRAI

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Keywords: ABA, alternative respiration, AOX, environmental stresses

JOURNAL FREE ACCESS

2002 Volume 19 Issue 3 Pages 187-190

DOI https://doi.org/10.5511/plantbiotechnology.19.187

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Abstract

Transcript levels of alternative oxidase genes (AOX1a and AOX1b) of rice were studied under various stresses using a Northern hybridization analysis. The steady-state mRNA levels of these genes increased under low temperature, high salt and drought conditions, but not in the presence of exogenous ABA. Two DRE/CRT-like sequences are also found in the promoter region of AOX1a.

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