Evidence to wood biodeterioration of tropical species revealed by non-destructive techniques

Autor(es)

Santini, Luiz ^[1] ; Ortega Rodriguez, Daigard Ricardo ^[2] ; Quintilhan, Manolo Trindade ^[2] ; Brazolin, Sergio ^[3] ; Tommasiello Filho, Mario ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Ctr Nucl Energy Agr, Dept Ecol, Ave Centenario 303, BR-13416000 Piracicaba, SP - Brazil

^[2] Univ Sao Paulo, Sch Agr Luiz de Queiroz, Dept Forest Resource, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[3] Inst Technol Res IPT USP, Ctr Technol Forest Resources, Lab Wood Preservat & Biodeteriorat Mat, BR-71410106 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Science of The Total Environment; v. 672, p. 357-369, JUL 1 2019.
• Citações Web of Science: 0

Resumo

The wood biodeterioration process is one of the symptoms produced by biotic agents that affect the biomechanics of urban trees and reduce their useful life and environmental services. This process is mainly studied through methods that are time-consuming or destructive and provide little information regarding the degradation process at the cellular scale. Based on a non-destructive study of five tropical urban trees: Poincianella pluviosa (sibipiruna),Prelocarpus rhorii (aldrago), Rhamnidium etaeocarpum (saguaraji), Trichilia clausenii (Catigua) and Lafoensia glyptocarpa (mirindiba rosa); the wood decaying zone, by xylophagous fungi, was analized. The trunk-wood samples containing the decaying zone were extracted with metal probes. Their microscopic anatomical structures were characterized and their mierodensity and chemical composition analyzed by X-ray densitometry and X-ray fluorescence, respectively. Degraded cell wall fiber and vessels obstructed by mycelial mass were observed in wood decay zones. The presence of wood compartmentalized by the formation of extractive deposits was also observed, as a possible resistance mechanism varying among species. Likewise, phosphorus (P), calcium (Ca), calcium/manganese molar ratio and wood density increase were observed in barrier zones, while iron (Fe) was related to the decay zone. Altogether, the present study show for detailed evaluation of the wood biodeterioration process at the microscopic scale. The potential of non-destructive techniques for application in the physiological analysis of trees was also demonstrated. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 15/05942-0 - Investigação do metabolismo de nanomateriais absorvidos por plantas empregando-se espectroscopias vibracional e de Raios X
• Beneficiário: Hudson Wallace Pereira de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 15/19121-8 - EMU concedido no processo 2015/05942-0: sistema de microfluorescência de Raios X
• Beneficiário: Hudson Wallace Pereira de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 14/17312-8 - Estudo dendrológico e anatômico do lenho das árvores do parque do campus luiz de queiroz: subsídios para a sua conservação e preservação
• Beneficiário: Luiz Santini Junior
• Modalidade de apoio: Bolsas no Brasil - Doutorado