Data/hora: 07/06/2024 15:09:23

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 19/05/1993
Data da última atualização: | 19/05/1993
Autoria: | SU, H.
Afiliação: | Departament of Plant Pathology & Entomology, National Taiwan University Taipei, Taiwan, China.
Título: | A tristeza virus strain causing dwarf of pomelo and grapefruit.
Ano de publicação: | 1981
Fonte/Imprenta: | Tokyo, Japan: International Society of Citricultural, 1981.
Volume: | v.1
Páginas: | p.423-426
Idioma: | Inglês
Conteúdo: | "Dwarf" disease of grapefruit (Citrus paradisi Macf.) and such pomelos as 'Wentan', 'Peiyu' and 'Miyu' pomelos (C. grandis L.) has been found recently in Taiwan. The disease is characterized by a bunchy appearance of new shoots with leaf curling and atrophy, internode shortening, severe stem-pitting, stunting, and malformed fruits with thick peel. Diseased trees indexed negatively for tatterleaf, xyloporosis and exocortis. The virus in question caused mild vein-clearing, and stem-pitting on 'Mexican' lime [C. aurantifolia (Christm.) Swing.] and no seedling-yellows (SY) symptoms on 'Eureka' lemon [C. limon (L.) Burm, F.], but developed prominent leaf yellowing and crinkling on grapefruit and pomelo seedlings. The causal virus showed strong a ELISA reaction and flourescent antibody staining with antibody against the Hassaku dwarf strain of citrus triateza virus (CTV). The dwarf disease may be attributed to a strain of CTV distinct from the current strains of CTV-SY. Grapefruit and pomelo seedlings infected with this dwarf strain of CTV (CTV-D) showed higher ELISA values (OD405) than in the same citrus seedlings inoculated with a common isolate of CTV-SY. The latter isolate replicated to higher concentration in 'Ponkan' and 'Tankan' mandarins (C. reticulata Blanco) than CTV-D.
Palavras-Chave: | Likubin; Rickettsia-like organism.
Thesagro: | Elisa.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (13065-1) - ADD - PL - -- - 634.3040601 - I61p - 1992000203 - DIS