A maize death acid, 10-oxo-11-phytoenoic acid, is the predominant cyclopentenone signal present during multiple stress and developmental conditions

作者：Christensen Shawn A^*; Huffaker Alisa; Hunter Charles T; Alborn Hans T; Schmelz Eric A

来源：Plant Signaling and Behavior, 2016, 11(2): e1120395.

DOI：10.1080/15592324.2015.1120395

• Cyclopentenone
• defense
• maize
• oxylipin
• Ten-oxo-11-phytoenoic acid
• 9-lipoxygenase
• 12-oxophytodienoic acid

Recently we investigated the function of the 9-lipoxygenase (LOX) derived cyclopentenones 10-oxo-11-phytoenoic acid (10-OPEA) and 10-oxo-11,15-phytodienoic acid (10-OPDA) and identified their C-14 and C-12 derivatives. 10-OPEA accumulation is elicited by fungal and insect attack and acts as a strong inhibitor of microbial and herbivore growth. Although structurally similar, comparative analyses between 10-OPEA and its 13-LOX analog 12-oxo-phytodienoic acid (12-OPDA) demonstrate specificity in transcript accumulation linked to detoxification, secondary metabolism, jasmonate regulation, and protease inhibition. As a potent cell death signal, 10-OPEA activates cysteine protease activity leading to ion leakage and apoptotic-like DNA fragmentation. In this study we further elucidate the distribution, abundance, and functional roles of 10-OPEA, 10-OPDA, and 12-OPDA, in diverse organs under pathogen- and insect-related stress.

• 出版日期2016-2-1