@article {4514, title = {Phytophthora nicotianae: agente etiol{\'o}gico da gomose da ac{\'a}cia negra no Brasil}, journal = {Fitopatologia Brasileira}, volume = {30}, year = {2005}, pages = {81{\textendash}4}, abstract = {

A gomose, causada por Phytophthora sp., {\'e} a mais importante enfermidade da ac{\'a}cia-negra (Acacia mearnsii) no Rio Grande do Sul, Brasil. A identifica{\c c}{\~a}o espec{\'\i}fica permanecia indeterminada. Procurou-se, ent{\~a}o, identificar a esp{\'e}cie de Phytophthora causadora desta doen{\c c}a no Rio Grande do Sul, usando caracter{\'\i}sticas fisiomorfol{\'o}gicas e estudos moleculares baseados no seq{\"u}enciamento das regi{\~o}es de Internal Transcribed Spacer (ITS). A patogenicidade dos isolados estudados para a ac{\'a}cia-negra foi confirmada. Os estudos confirmaram Phytophthora nicotianae como a correta identidade dos isolados fitopatog{\^e}nicos. Este {\'e} o primeiro relato de P. nicotianae em ac{\'a}cia-negra no Brasil.

Gummosis caused by Phytophthora sp. is the most important disease of black wattle (Acacia mearnsii) in Rio Grande do Sul, Brazil. Isolates of Phytophthora sp. associated with diseased plants were obtained from Rio Grande do Sul and their pathogenicity was confirmed. In order to elucidate the correct identity of the fungus at the species level physiomorphological characteristics were determined and molecular studies were conducted based on sequences of Internal Transcribed Spacer (ITS) region. The fungus was identified as Phytophthora nicotianae. This is the first report of P. nicotianae on black wattle in Brazil.

}, issn = {1982-5676 }, doi = {10.1590/s0100-41582005000100015 }, url = {https://doi.org/10.1590/s0100-41582005000100015 }, author = {Santos, A. F. dos and Luz, EDMN and Souza, J. T.} }