| Title: | Improved plant heat shock resistance is introduced differently by heat and insect infestation: the role of volatile emission traits |
| Author(s): | Liu B; Kaurilind E; Zhang L; Okereke CN; Remmel T; Niinemets U; |
| Address: | "Chair of Crop Science and Plant Biology, Estonian University of Life Sciences, Kreutzwaldi 5, 51006, Tartu, Estonia. bin.liu@emu.ee. Chair of Crop Science and Plant Biology, Estonian University of Life Sciences, Kreutzwaldi 5, 51006, Tartu, Estonia. Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China. Estonian Academy of Sciences, Kohtu 6, 10130, Tallinn, Estonia" |
| DOI: | 10.1007/s00442-022-05168-x |
| ISSN/ISBN: | 1432-1939 (Electronic) 0029-8549 (Linking) |
| Abstract: | "Heat stress is one of the most important abiotic stresses confronted by plants under global climate change. Plant exposure to abiotic or biotic stress can improve its tolerance to subsequent severe episodes of the same or different stress (stress priming), but so far there is limited comparative information about how pre-exposures to different abiotic and biotic elicitors alter plant resistance to severe heat stress. We exposed the perennial herb Melilotus albus Medik., a species rich in secondary metabolites, to moderate heat stress (35 degrees C) and greenhouse whitefly (Trialeurodes vaporariorum West.) infestation to comparatively determine whether both pre-treatments could enhance plant tolerance to the subsequent heat shock (45 degrees C) stress. Plant physiological responses to stress were characterized by photosynthetic traits and volatile organic compound emissions through 72 h recovery. Heat shock treatment reduced net assimilation rate (A) and stomatal conductance in all plants, but heat-primed plants had significantly faster rates of recovery of A than other plants. By the end of the recovery period, A in none of the three heat shock-stressed groups recovered to the control level, but in whitefly-infested plants it reached the pre-heat shock level. In heat-primed plants, the heat shock treatment was associated with a fast rise of monoterpene emissions, and in whitefly-infested plants with benzenoid emissions and an increase in total phenolic content" |
| Keywords: | "Animals Heat-Shock Response/physiology *Hemiptera/metabolism Photosynthesis/physiology Stress, Physiological *Volatile Organic Compounds Benzenoids Heat priming Heat shock Plant secondary metabolites Terpenoids Whitefly infestation;" |
| Notes: | "MedlineLiu, Bin Kaurilind, Eve Zhang, Lu Okereke, Chikodinaka N Remmel, Triinu Niinemets, Ulo eng Centre of Excellence EcolChange/european regional development fund/ PRG947/eesti teadusagentuur/ P190252PKTT/eesti maaulikool/ Estonian Plant Biology Infrastructure-PLANT/european union regional development fund/ the AnaEE Estonia Project/EU Regional Development Fund/ 322603/ERC_/European Research Council/International SIP-VOL+/ERC_/European Research Council/International Germany 2022/04/27 Oecologia. 2022 May; 199(1):53-68. doi: 10.1007/s00442-022-05168-x. Epub 2022 Apr 26" |
