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Environ Sci Pollut Res Int

Title:		Volatile organic compounds and nitric oxide as responses of a Brazilian tropical species to ozone: the emission profile of young and mature leaves
Author(s):		Bison JV; Cardoso-Gustavson P; de Moraes RM; da Silva Pedrosa G; Cruz LS; Freschi L; de Souza SR;
Address:		"Nucleo de Pesquisa em Ecologia, Instituto de Botanica, Av. Miguel Stefano 3687, Agua Funda, Sao Paulo, SP, 04301-902, Brazil. Programa de Pos-Graduacao em Biodiversidade Vegetal e Meio Ambiente, Instituto de Botanica, Av. Miguel Stefano 3687, Agua Funda, Sao Paulo, SP, 04301-902, Brazil. Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Av. dos Estados 5001, Santo Andre, SP, 09210-580, Brazil. Programa de Pos-Graduacao em Biotecnociencias, Universidade Federal do ABC, Av. dos Estados 5001, Santo Andre, SP, 09210-580, Brazil. Departamento de Botanica, Instituto de Biociencia, Universidade de Sao Paulo, Rua do Matao 277, Butanta, SP, 05508-090, Brazil. Nucleo de Pesquisa em Ecologia, Instituto de Botanica, Av. Miguel Stefano 3687, Agua Funda, Sao Paulo, SP, 04301-902, Brazil. sribeiro@ibot.sp.gov.br"
Journal Title:		Environ Sci Pollut Res Int
Year:		2018
Volume:		20171125
Issue:		4
Page Number:		3840 - 3848
DOI:		10.1007/s11356-017-0744-1
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"The emission profile of volatile organic compounds (VOCs) and nitric oxide (NO) in young and mature leaves of Croton floribundus was assessed in plants exposed to filtered air (FA) and ozone-enriched filtered air (FA+O(3)). After the period of exposure, leaves were enclosed in polyethylene terephthalate bags and VOCs were collected in young and mature leaves. Both young and mature leaves constitutively emitted the same VOC, but the concentrations were higher in young leaves. O(3) exposure induced the emission of sesquiterpenes (mainly beta-caryophyllene) known as antioxidant compounds that may scavenge O(3). Young leaves were the highest emitters of sesquiterpenes. O(3) induced a rapid accumulation of NO in different tissues and leaf developmental stages; this accumulation was marked in palisade and spongy parenchyma cells in young and mature leaves, respectively. O(3) altered the levels of the signaling compound methyl salicylate (MeSA). Moreover, our data showed that NO together with VOC emissions, such as geranyl acetate, alpha-cadiene, trans-farnesol, cis-beta-farnesene, and MeSA, participate of plant defense mechanisms against the oxidative damage caused by O(3)"
Keywords:		"Air Pollutants/*toxicity Brazil Croton/*chemistry/drug effects/growth & development Models, Theoretical Nitric Oxide/*analysis Oxidative Stress/drug effects Ozone/*toxicity Plant Leaves/*chemistry/drug effects/growth & development Tropical Climate Volatil;"
Notes:		"MedlineBison, Josiane Valeria Cardoso-Gustavson, Poliana de Moraes, Regina Maria da Silva Pedrosa, Giselle Cruz, Luciano Soares Freschi, Luciano de Souza, Silvia Ribeiro eng 12/11663-8/FAPESP/ 307281/2013-2/CNPq/ Germany 2017/11/28 Environ Sci Pollut Res Int. 2018 Feb; 25(4):3840-3848. doi: 10.1007/s11356-017-0744-1. Epub 2017 Nov 25"