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Paper | Regular issue | Vol 83, No. 1, 2011, pp.57-62
Published online, 7th December, 2010
DOI: 10.3987/COM-10-12092
Structure-Activity Relationships on Senescence-Promoting Effect of Arabidopsides from Arabidopsis thaliana

Haruyuki Nakajyo, Yosuke Hisamatsu, Nobuharu Goto, Kosumi Yamada, Koji Hasegawa, and Hideyuki Shigemori*

*Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305, Japan

Abstract

Arabidopsides A-D and F isolated from Arabidopsis thaliana are rare oxylipins containing 12-oxophytodienoic acid (OPDA) and/or dinor-oxophytodienoic acid (dn-OPDA) which are known as precursors of jasmonic acid (JA) and methyl jasmonate (MeJA). The senescence-promoting effect of these arabidopsides A-D and F were examined by an oat (Avena sativa) leaf assay. Arabidopsides C and D, digalactosyldiacylglycerides containing OPDA and/or dn-OPDA, are more effective on leaf senescence than arabidopsides A, B, and F, monogalactosyldiacylglycerides containing OPDA and/or dn-OPDA. The effect of arabidopsides C and D is the almost same as that of JA, MeJA, and OPDA, which are well known to be senescence promoters. These results suggest that arabidopsides A-D and F play important roles in leaf senescence.