Cylindrocarpon destructans causador do "pé-preto" da videira no Rio Grande do Sul

Abstract

RESUMO Cylindrocarpon destructans causal agent of grapevine blackfoot in Rio Grande do SulSince 1999, a death of the American grapevine (Vitis labrusca) has been noted in the state of Rio G rande do Sul, Brazil. The disease is characterized by stem and root rotting Desde 1999 tem sido observada a morte de videiras (Vitis labrusca) americanas no Rio Grande do Sul. A doença é caracterizada pelo apodrecimento do colo da planta e do sistema radicular, seguindose o murchamento da parte áerea e, conseqüentemente, a morte da planta. Com base no isolamento, na comprovação da patogenicidade e nas características morfológicas, identificou-se o agente causal como sendo Cylindrocarpon destructans. Este é o primeiro relato no Brasil do "pé-preto" da videira.Palavras-chave adicionais: black foot, declínio de videiras, Vitis labrusca, fungos.

Agronomic behavior of grape rootstocks resistant to young vine decline in Santa Catarina State, Brazil

“…It is a root scale that attacks a large variety of hosts but it is particularly harmful to grapevine [3]. However, there are evidences that the damage caused by ground-pearl in vine roots have led to infection by several species of pathogenic soil fungi, such as Cylindrocarpon, Phaeoacremonium and others [4]. The symptoms are similar to "young vine decline" and other grapevine diseases (Petri disease, esca) caused by this kind of fungi that were reported in other countries [5][6][7].…”

Aggressiveness of Ilyonectria spp. and “Cylindrocarpon” pauciseptatum associated with black foot disease of grapevine

“…Scholten was confirmed in vineyards of the Serra Gaúcha Region. This was considered the first report of black foot disease in Brazil (Garrido et al, 2004). The disease has already been described in other countries of South America such as Argentina (Gatica et al, 2001), Chile (Auger et al, 2007) and Uruguay (Abreo et al, 2010), as well as in other countries like the United States of America (Petit & Gubler, 2005), Portugal (Rego et al, 2000), South Africa, New Zealand (Halleen et al, 2004), Turkey (Özben et al, 2012) and Canada (Petit et al, 2011).…”

“…After drying, these fragments were plated in Petri dishes with Potato-Dextrose-Agar culture medium complemented with 0.5 g L -1 of streptomycin sulphate and incubated for seven days at 25 ºC, in the dark. After this period, morphological characteristics were observed according to Booth (1966), Garrido et al (2004) and Halleen et al (2004;2006b In preliminary studies the histone H3 region of the isolates used in this assay was sequenced and deposited in Genbank (Santos et al, 2014a;2014b;2014c). These were grown in PDA plates, incubated at 25 ºC, in the dark, for 30 days prior to inoculation.…”

“…Black foot disease in grapevines affects mostly young vines causing typical symptoms in the canopy and the root system. Garrido et al (2004) report that three-year-old vines cv. Bordô presented trunk darkening.…”

“…), Campylocarpon Halleen, Schroers & Crous and Cylindrocladiella Boesew. In Brazil, besides the "C." destructans associated with the disease (Garrido et al, 2004), the presence of Ilyonectria liriodendri (Halleen, Rego & Crous) Chaverri & Salgado (Russi et al, 2010), Ilyonectria macrodidyma (Halleen, Schroers & Crous) P. Chaverri & C. Salgado (Santos et al, 2014a), "Cylindrocarpon" pauciseptatum Schroers & Crous (Santos et al, 2014b), Ilyonectria robusta (A.A. Hildebr.)…”