Title:	Bacterial canker of grapevine in Roraima, Brazil.
Authors:	HALFELD-VIEIRA, B. A. NECHET, K. L.
Affiliation:	Bernardo de Almeida Halfed Vieira, CPAF-RR; Kátia de Lima Nechet, CPAF-RR.
Date Issued:	2006
Citation:	Fitopatologia Brasileira, v. 31, p. 604, 2006.
Description:	The bacterial canker of grapevine (Vitis vinifera L.), caused by Xanthomonas campestris pv. viticola Nayudu (Dye), is a quarentenary disease officially restricted in Brazil to the states of Bahia, Pernambuco, Piauí and Ceará. The disease was described for the first time in India (Nayudu, Phytopathologische Zeitschrift 73:183. 1972) and reported in Brazil in 1998 at Petrolina, PE (Malavolta Jr. et al., Summa Phytopathologica 25:262. 1999). In July 2006, the Plant Pathology Laboratory at Embrapa Roraima received samples from grapevine plantations established in Boa Vista, RR, with stem canker and leaf necrosis symptoms. An intense exudation was observed when these materials were examined under the light microscope. Upon isolating the bacteria it was observed that a permanent association exists between the bacteria able to incite a typical hypersensitive reaction in tomato cv. Santa Clara and tobacco plants only 48 h after infiltration.
Keywords:	Xanthomaonas campestris cancros bacterianos Videira Roraima
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-RR)