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Plant Cell Environ

Title:		The lipoxygenase gene OsRCI-1 is involved in the biosynthesis of herbivore-induced JAs and regulates plant defense and growth in rice
Author(s):		Liao Z; Wang L; Li C; Cao M; Wang J; Yao Z; Zhou S; Zhou G; Zhang D; Lou Y;
Address:		"The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A & F University, Hangzhou, China. The Promotion Station of Plant Protection, Fertilizer Utilization and Rural Energy Technology of Jiaxing, Jiaxing, Zhejiang, China. State Key Laboratory of Rice Biology, Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China"
Journal Title:		Plant Cell Environ
Year:		2022
Volume:		20220523
Issue:		9
Page Number:		2827 - 2840
DOI:		10.1111/pce.14341
ISSN/ISBN:		1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:		"The pathway mediated by jasmonic acid (JA), biosynthesized via 13-lipoxygenases (LOX), plays a central role in both plant development and defense. In rice, there are at least fourteen 13-LOXs. Yet, only two 13-LOXs have been known to be involved in the biosynthesis of JA and plant defenses in rice. Here we cloned a chloroplast-localized 13-LOX gene from rice, OsRCI-1, whose transcripts were upregulated following infestation by brown planthopper (BPH, Nilaparvata lugens), one of the most important pests in rice. Overexpression of OsRCI-1 (oeRCI lines) increased levels of BPH-induced JA, jasmonate-isoleucine, trypsin protease inhibitors and three volatile compounds, 2-heptanone, 2-heptanol and alpha-thujene. BPHs showed a decreased colonization, fecundity and mass, and developed slowly on oeRCI plants compared with wild-type (WT) plants. Moreover, BPH-infested oeRCI plants were more attractive to the egg parasitoid of BPH, Anagrus nilaparvatae than equally treated WT plants. The decreased attractiveness to BPH and enhanced attractiveness to the parasitoid of oeRCI plants correlated with higher levels of BPH-induced 2-heptanone and 2-heptanol, and 2-heptanone, respectively. Compared with oeRCI plants, WT plants had higher plant height and 1000-grain weight. These results indicate that OsRCI-1 is involved in herbivore-induced JA bursts and plays a role in plant defense and growth"
Keywords:		"Animals Cyclopentanes/metabolism Gene Expression Regulation, Plant *Hemiptera/physiology Heptanol/metabolism Herbivory *Oryza/metabolism Oxylipins/metabolism Plant Proteins/genetics/metabolism Plants, Genetically Modified/metabolism 2-heptanol 2-heptanone;"
Notes:		"MedlineLiao, Zhihong Wang, Lu Li, Chengzhe Cao, Mengjiao Wang, Jiani Yao, Zhangliang Zhou, Senya Zhou, Guoxin Zhang, Dayu Lou, Yonggen eng Research Support, Non-U.S. Gov't 2022/05/12 Plant Cell Environ. 2022 Sep; 45(9):2827-2840. doi: 10.1111/pce.14341. Epub 2022 May 23"