Two new species of Calonectria (Hypocreales, Nectriaceae) causing Eucalyptus leaf blight in Brazil.

Autor: Sanchez-Gonzalez EI; Universidade Federal de Lavras, Departamento de Fitopatologia, Lavras, MG, 37200-900, Brasil Universidade Federal de Lavras Lavras Brazil., Soares TPF; Suzano Papel e Celulose S. A. Centro de Tecnologia, Aracruz, ES, 29197-900, Brasil Suzano Papel e Celulose S. A. Centro de Tecnologia Aracruz Brazil., Zarpelon TG; Suzano Papel e Celulose S. A. Centro de Tecnologia, Aracruz, ES, 29197-900, Brasil Suzano Papel e Celulose S. A. Centro de Tecnologia Aracruz Brazil., Zauza EAV; Suzano Papel e Celulose S. A. Centro de Tecnologia, Aracruz, ES, 29197-900, Brasil Suzano Papel e Celulose S. A. Centro de Tecnologia Aracruz Brazil., Mafia RG; Suzano Papel e Celulose S. A. Centro de Tecnologia, Aracruz, ES, 29197-900, Brasil Suzano Papel e Celulose S. A. Centro de Tecnologia Aracruz Brazil., Ferreira MA; Universidade Federal de Lavras, Departamento de Fitopatologia, Lavras, MG, 37200-900, Brasil Universidade Federal de Lavras Lavras Brazil.
Jazyk: angličtina
Zdroj: MycoKeys [MycoKeys] 2022 Jul 29; Vol. 91, pp. 169-197. Date of Electronic Publication: 2022 Jul 29 (Print Publication: 2022).
DOI: 10.3897/mycokeys.91.84896
Abstrakt: In recent decades, commercial Eucalyptus plantations have expanded toward the warm and humid regions of northern and northeastern Brazil, where Calonectria leaf blight (CLB) has become the primary fungal leaf disease of this crop. CLB can be caused by different Calonectria species, and previous studies have indicated that Calonectria might have high species diversity in Brazil. During a disease survey conducted in three commercial plantations of Eucalyptus in northeastern Brazil, diseased leaves from Eucalyptus trees with typical symptoms of CLB were collected, and Calonectria fungi were isolated. Based on phylogenetic analyses of six gene regions ( ac t, cmdA , his3 , rpb2 , tef1 , and tub2 ) and morphological characteristics, two new species of Calonectria were identified. Five isolates were named as C.paragominensis sp. nov. and four were named as C.imperata sp. nov. The pathogenicity to Eucalyptus of both species was confirmed by fulfilling the Koch's postulates.
(Enrique I. Sanchez-Gonzalez, Thaissa de Paula Farias Soares, Talyta Galafassi Zarpelon, Edival Angelo Valverde Zauza, Reginaldo Gonçalves Mafia, Maria Alves Ferreira.)
Databáze: MEDLINE
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