Foliage visible injury in the tropical tree species, Astronium graveolens is strictly related to phytotoxic ozone dose (PODy)

Autor(es)

Fernandes, Francine Faia ^[1] ; Moura, Barbara Baesso ^[2]

Afiliação do(s) autor(es)

^[1] Inst Bot, Caixa Postal 3005, BR-01061970 Sao Paulo, SP - Brazil

^[2] Univ Florence, Dept Agr Environm Food & Forestry, Florence - Italy

• Tipo de documento: Artigo Científico
• Fonte: Environmental Science and Pollution Research; v. 28, n. 31, p. 41726-41735, AUG 2021.
• Citações Web of Science: 0

Resumo

The present study evaluates the development of visible injury related to phytotoxic ozone dose (PODy) in native tropical species Astronium graveolens Jacq. (Anacardiaceae) and validates the symptoms using structural markers attributed to oxidative burst and hypersensitive responses. Increasing POD0 was associated with increasing O-3 visible injury using different metrics as the incidence (INC = number of injured plants/total number of plants x 100), severity (SF = number of injured leaves/total number of leaves on injured plant x 100), and severity leaflet (SFL = number of injured leaflets/total number leaflets injured plant x 100). The effective dose (ED), which represents the POD0 dose responsible for inducing 20 (ED20), 50 (ED50), or 80% (ED80) of visible injury, were used to demonstrate that for this species, the response is similar even when the plants are exposed to diverse climate environments. Further investigation of the INC and SF index may help in long-term forest monitoring sites dedicated to O-3 assessment in forests, while the SFL index seems to be an excellent indicator to be used in the short term to investigate the effects of O-3. (AU)

• Processo FAPESP: 11/51233-0 - Analises fisiologicas em especies arboreas com vistas a elaboracao de modelo de fluxo estomatico de ozonio.
• Beneficiário: Regina Maria de Moraes
• Modalidade de apoio: Auxílio à Pesquisa - Regular