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J Exp Bot

Title:		"Impacts of methyl jasmonate on Selaginella martensii: volatiles, transcriptomics, phytohormones, and gas exchange"
Author(s):		Wuyun T; Horak H; Liu B; Talts E; Kilk K; Kaurilind E; Li C; Zhang L; Niinemets U;
Address:		"Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51006 Tartu, Estonia. Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia. Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, 50411 Tartu, Estonia. Institute of Botany, Chinese Academy of Sciences, Nanxincun 20, 100093 Beijing, China. College of Landscape and Architecture, Zhejiang A&F University, Wusu Street 666, 311300 Hangzhou, China. Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang A&F University, Wusu Street 666, 311300 Hangzhou, China. Estonian Academy of Sciences, Kohtu 6, 10130 Tallinn, Estonia"
Journal Title:		J Exp Bot
Year:		2023
Volume:		74
Issue:		3
Page Number:		889 - 908
DOI:		10.1093/jxb/erac463
ISSN/ISBN:		1460-2431 (Electronic) 0022-0957 (Linking)
Abstract:		"Methyl jasmonate (MeJA) induces various defence responses in seed plants, but for early plant lineages, information on the potential of jasmonates to elicit stress signalling and trigger physiological modifications is limited. The spikemoss Selaginella martensii was exposed to a range of MeJA concentrations (0, 10, 25, and 50 mM), and biogenic volatile organic compound (BVOC) emissions, photosynthetic rate (A), and stomatal conductance (gs) were continuously measured. In addition, changes in phytohormone concentrations and gene expression were studied. Enhancement of methanol, lipoxygenase pathway volatiles and linalool emissions, and reductions in A and gs, were MeJA dose-dependent. Before MeJA treatment, the concentration of 12-oxo-phytodienoic acid (OPDA) was 7-fold higher than jasmonic acid (JA). MeJA treatment rapidly increased OPDA and JA concentrations (within 30 min), with the latter more responsive. Some genes involved in BVOC biosynthesis and OPDA-specific response were up-regulated at 30 min after MeJA spraying, whereas those in the JA signalling pathway were not affected. Although JA was synthesized in S. martensii, OPDA was prioritized as a signalling molecule upon MeJA application. MeJA inhibited primary and enhanced secondary metabolism; we propose that fast-emitted linalool could serve as a marker of elicitation of stress-induced metabolism in lycophytes"
Keywords:		*Plant Growth Regulators/metabolism *Selaginellaceae/genetics/metabolism Transcriptome Oxylipins/pharmacology/metabolism Cyclopentanes/pharmacology/metabolism Acetates/pharmacology/metabolism Bvoc MeJA OPDA signalling defence strategy dose dependence lina;
Notes:		"MedlineWuyun, Tana Horak, Hanna Liu, Bin Talts, Eero Kilk, Kalle Kaurilind, Eve Li, Caihong Zhang, Lu Niinemets, Ulo eng 322603/European Research Council/International Research Support, Non-U.S. Gov't England 2022/11/27 J Exp Bot. 2023 Feb 5; 74(3):889-908. doi: 10.1093/jxb/erac463"