Article
Sustained low abscisic acid levels increase seedling vigor under cold stress in rice (Oryza sativa L.).
Scientific reports - 9 Sept 2015
Mega Ryosuke, Meguro-Maoka Ayano, Endo Akira, Shimosaka Etsuo, Murayama Seiji, Nambara Eiji, Seo Mitsunori, Kanno Yuri, Abrams Suzanne R, Sato Yutaka
Abstract excerpt
Stress-induced abscisic acid (ABA) is mainly catabolized by ABA 8'-hydroxylase (ABA8ox), which also strictly regulates endogenous ABA levels. Although three members of the ABA8ox gene family are conserved in rice, it is not clear which stressors induce expression of these genes. Here, we found that OsABA8ox1 was induced by cold stress within 24 h and that OsABA8ox2 and OsABA8ox3 were not. In contrast, OsABA8ox2...
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