Hypoxia-Inducible Genes Encoding Small EF-Hand Proteins in Rice and Tomato

スポンサーリンク

概要

• 論文の詳細を見る

• Rice has evolved metabolic and morphological adaptations to low-oxygen stress to grow in submerged paddy fields. To characterize the molecular components that mediate the response to hypoxia in rice, we identified low-oxygen stress early response genes by microarray analysis. Among the highly responsive genes, five genes, OsHREF1 to OsHREF5, shared strong homology. They encoded small proteins harboring two EF-hands, typical Ca2+-binding motifs. Homologous genes were found in many land plants, including SlHREF in tomato, which is also strongly induced by hypoxia. SlHREF induction was detected in both roots and shoots of tomato plants under hypoxia. With the exception of OsHREF5, OsHREF expression was unaffected by drought, salinity, cold, or osmotic stress. Fluorescent signals of green fluorescent protein-fused OsHREFs were detected in the cytosol and nucleus. Ruthenium red, an inhibitor of intracellular Ca2+ release, repressed induction of OsHREF1-4 under hypoxia. The HREFs may be related to the Ca2+ response to hypoxia.

• 社団法人 日本農芸化学会の論文

著者

• Otsuka Chie

  Research Institute for Biological Sciences

• MINAMI Ikuko

  Research Institute for Biological Sciences, Okayama Prefectural Technology Center for Agriculture, F

• ODA Kenji

  Research Institute for Biological Sciences, Okayama Prefectural Technology Center for Agriculture, F

関連論文

• Oxidative DNA Damage Induced by 364-nm UVA Laser in Yeast Cells
• Hypoxia-Inducible Genes Encoding Small EF-Hand Proteins in Rice and Tomato
• Hypoxia-Inducible Genes Encoding Small EF-Hand Proteins in Rice and Tomato

スポンサーリンク