How temperature variation affects white-rot fungi mycelial growth dynamics: a nonlinear mixed models approach

Autor(es)

Negrao, Djanira Rodrigues ^{[1, 2]} ; Mischan, Martha Maria ^[3] ; de Pinho, Sheila Zambello ^[3] ; de Carvalho, Lidia Raquel ^[3] ; Gomes, Rafaela Lancas ^[3] ; Passos, Jose Raimundo de Souza ^[3]

Afiliação do(s) autor(es)

^[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Biorenewables Natl Lab LNBR, Campinas, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Lageado Expt Farm, Coll Agr Sci FCA, Dept Plant Protect, Botucatu, SP - Brazil

^[3] Univ Estadual Paulista UNESP, Biosci Inst IBB, Bioestat Plant Biol Parasitol & Zool Dept, Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FUNGAL BIOLOGY; v. 125, n. 11, p. 860-868, NOV 2021.
• Citações Web of Science: 0

Resumo

This study aimed to model mycelial growth in a factorial experiment with two species of white rot fungi growing at five temperatures. The nonlinear models evaluated were logistic, Gompertz, Weibull and von Bertalanffy. The adjustments were performed first by evaluating the fixed and mixed-effects models with random effects, added to the fixed parameters. Then, the best adjusted model was improved by an adequated covariance structure, and dummy variables were added to the parameters asymptote (a) and abscissa of the inflection point (b) in the model in order to verify the effect of the experiment factors, species and temperatures on the regression parameters. The criteria used to compare models were residual variance and Akaike information criterion. Gompertz and von Bertalanffy mixed-effects models were better adjusted. The parameters differed between species. Moreover, the linear and quadratic effects of temperature evaluated in each species were significant. The models were reparametrized in order to consider two parameters of interest: velocity (m) at the inflection point and lag time (l). The maximum growth velocity was obtained at 25.4 degrees C by S. ostrea, while T. villosa was achieved at 30.5 degrees C; both fungi suffered less lag time by increasing the temperature. (c) 2021 British Mycological Society. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/15747-4 - Degradação do licor negro por fungos basidiomicetos de mata nativa
• Beneficiário: Djanira Rodrigues Negrão
• Modalidade de apoio: Bolsas no Brasil - Doutorado