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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Volatile organic compounds and nitric oxide as responses of a Brazilian tropical species to ozone: the emission profile of young and mature leaves

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Bison, Josiane Valeria [1, 2] ; Cardoso-Gustavson, Poliana [3] ; de Moraes, Regina Maria [1] ; Pedrosa, Giselle da Silva [3, 4] ; Cruz, Luciano Soares [3] ; Freschi, Luciano [5] ; de Souza, Silvia Ribeiro [1]
Total Authors: 7
[1] Nucleo Pesquisa Ecol, Inst Bot, Ave Miguel Stefano 3687, BR-04301902 Sao Paulo, SP - Brazil
[2] Inst Bot, Programa Posgrad Biodiversidade Vegetal & Meio Am, Ave Miguel Stefano 3687, BR-04301902 Sao Paulo, SP - Brazil
[3] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil
[4] Univ Fed ABC, Programa Posgrad Biotecnociencias, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil
[5] Univ Sao Paulo, Inst Biociencia, Dept Bot, Rua Matao 277, BR-05508090 Butant, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Environmental Science and Pollution Research; v. 25, n. 4, p. 3840-3848, FEB 2018.
Web of Science Citations: 8

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. (AU)

FAPESP's process: 12/11663-8 - Atmospheric ozone action on multiple functions of volatile organic compounds from native plants
Grantee:Silvia Ribeiro de Souza
Support Opportunities: Regular Research Grants