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Planta

Title:		'Help is in the air': volatiles from salt-stressed plants increase the reproductive success of receivers under salinity
Author(s):		Landi M; Araniti F; Flamini G; Piccolo EL; Trivellini A; Abenavoli MR; Guidi L;
Address:		"Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy. marco.landi@unipi.it. CIRSEC, Centre for Climatic Change Impact, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy. marco.landi@unipi.it. Department of Agraria, University 'Mediterranea' of Reggio Calabria, localita Feo di Vito, 89122, Reggio Calabria, RC, Italy. Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy. Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy. Institute of Life Sciences, Scuola Superiore Sant'Anna, Via Santa Cecilia 3, 56127, Pisa, Italy. CIRSEC, Centre for Climatic Change Impact, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy"
Journal Title:		Planta
Year:		2020
Volume:		20200113
Issue:		2
Page Number:		48 -
DOI:		10.1007/s00425-020-03344-y
ISSN/ISBN:		1432-2048 (Electronic) 0032-0935 (Linking)
Abstract:		"Salinity alters VOC profile in emitter sweet basil plants. Airborne signals by emitter plants promote earlier flowering of receivers and increase their reproductive success under salinity. Airborne signals can prime neighboring plants against pathogen and/or herbivore attacks, whilst little is known about the possibility that volatile organic compounds (VOCs) emitted by stressed plants alert neighboring plants against abiotic stressors. Salt stress (50 mM NaCl) was imposed on Ocimum basilicum L. plants (emitters, namely NaCl), and a putative alerting-priming interaction was tested on neighboring basil plants (receivers, namely NaCl-S). Compared with the receivers, the NaCl plants exhibited reduced biomass, lower photosynthesis, and changes in the VOC profile, which are common early responses of plants to salinity. In contrast, NaCl-S plants had physiological parameters similar to those of nonsalted plants (C), but exhibited a different VOC fingerprint, which overlapped, for most compounds, with that of emitters. NaCl-S plants exposed later to NaCl treatment (namely NaCl-S + NaCl) exhibited changes in the VOC profile, earlier plant senescence, earlier flowering, and higher seed yield than C + NaCl plants. This experiment offers the evidence that (1) NaCl-triggered VOCs promote metabolic changes in NaCl-S plants, which, finally, increase reproductive success and (2) the differences in VOC profiles observed between emitters and receivers subjected to salinity raise the question whether the receivers are able to 'propagate' the warning signal triggered by VOCs in neighboring companions"
Keywords:		Biomass Carbon/metabolism Chlorophyll/metabolism Ethylenes/biosynthesis Flavonoids/metabolism Fluorescence Gases/metabolism Metabolomics Nitrogen/metabolism Ocimum basilicum/drug effects/*physiology Phenotype Photosynthesis/drug effects Plant Leaves/drug;
Notes:		"MedlineLandi, Marco Araniti, Fabrizio Flamini, Guido Piccolo, Ermes Lo Trivellini, Alice Abenavoli, Maria Rosa Guidi, Lucia eng cod. RBSI14L9CE/project SIR-2014 (MEDANAT)/ Germany 2020/01/15 Planta. 2020 Jan 13; 251(2):48. doi: 10.1007/s00425-020-03344-y"