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New Phytol

Title:		Plant volatiles as regulators of hormone homeostasis
Author(s):		Dani KGS; Loreto F;
Address:		"Institute of Sustainable Plant Protection, National Research Council of Italy, Via Madonna del Piano 10, Sesto Fiorentino, Florence, 50019, Italy. Department of Biology, Agriculture and Food Sciences, National Research Council of Italy, Piazzale Aldo Moro 7, Rome, 00185, Italy. Department of Biology, University of Naples Federico II, Via Cinthia, Naples, 80126, Italy"
Journal Title:		New Phytol
Year:		2022
Volume:		20220317
Issue:		3
Page Number:		804 - 812
DOI:		10.1111/nph.18035
ISSN/ISBN:		1469-8137 (Electronic) 0028-646X (Linking)
Abstract:		"Some canonical plant hormones such as auxins and gibberellins have precursors that are biogenic volatiles (indole, indole acetonitrile, phenylacetaldoxime and ent-kaurene). Cytokinins, abscisic acid and strigolactones are hormones comprising chemical moieties that have distinct volatile analogues, and are synthesised alongside constitutively emitted volatiles (isoprene, sesquiterpenes, lactones, benzenoids and apocarotenoid volatiles). Nonvolatile hormone analogues and biogenic volatile organic compounds (BVOCs) evolved in tandem as growth and behavioural regulators in unicellular organisms. In plants, however, nonvolatile hormones evolved as regulators of growth, development and differentiation, while endogenous BVOCs (often synthesised lifelong) became subtle regulators of hormone synthesis, availability, activity and turnover, all supported by functionally redundant components of hormone metabolism. Reciprocal changes in the abundance and activity of hormones, nitric oxide, and constitutive plant volatiles constantly bridge retrograde and anterograde signalling to maintain hormone equilibria even in unstressed plants. This is distinct from transient interference in hormone signalling by stress-induced and exogenously received volatiles"
Keywords:		Homeostasis Hormones/metabolism Plant Growth Regulators/metabolism *Plants/metabolism *Volatile Organic Compounds/metabolism biogenic volatiles hormone signalling plant defence plant development plant-microbial interactions retrograde signalling volatile;
Notes:		"MedlineDani, Kaidala Ganesha Srikanta Loreto, Francesco eng Research Support, Non-U.S. Gov't Review England 2022/02/17 New Phytol. 2022 May; 234(3):804-812. doi: 10.1111/nph.18035. Epub 2022 Mar 17"