Records of fungi parasitic on plants in New Zealand 1966–68

Dingley, Joan M.

doi:10.1080/00288233.1970.10425406

Cited by 19 publications

(11 citation statements)

References 12 publications

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“…Both of the latter studies, however, report that the teleomorph structures and galls also are associated with a Diplodia sp. Dingley (1970) reports ''small papilla on one end'' of the ascospores, which is absent in B. australis. This disease also was described from Australian Acacia by Scurfield (1966), who identified the causal agent as a fungus in the Sphaeriaceae.…”

Section: Discussionmentioning

confidence: 99%

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Multiple Gene Sequences Delimit Botryosphaeria australis sp. nov. from B. lutea

et al. 2004

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Botryosphaeria lutea (anamorph Fusicoccum luteum) most easily is distinguished from other Botryosphaeria spp. by a yellow pigment that is formed in young cultures. This fungus has been reported from a number of cultivated hosts in New Zealand and Portugal. During a survey of Botryosphaeria fungi that occur on native Acacia species in Australia, a yellow pigment was observed in some cultures. These isolates were morphologically similar to B. lutea, but the pigment differed slightly from the one formed by authentic B. lutea isolates. Preliminary data also revealed small differences in ITS rDNA sequence data. The aim of this study was to determine whether these small differences were indicative of separate species or merely variations within B. lutea. Anamorph, teleomorph and culture morphology were compared between B. lutea and Acacia isolates from Australia. Sequence data of two other genome regions, namely the ␤-tubulin and EF1-␣ gene and intron regions, were combined with ITS rDNA sequence data to determine the phylogenetic relationship between these isolates. Isolates of B. lutea and those from Australian Acacia species were not significantly different in spore morphology. The yellow pigment, however, was much more distinct in cultures of B. lutea than in cultures from Acacia. There were only a few base pair variations in each of the analyzed gene regions, but these variations were fixed in the two groups in all regions. By combining these data it was clear that B. lutea and the isolates from Acacia were distinct species, albeit very closely related. We, therefore, propose the new epithet B. australis for the fungus from Australia. Botryosphaeria australis also was isolated in this study from exotic Sequoiadendron trees in Australia. Re-analyses of GenBank data in this study showed that B. australis also occurs on other native Australian hosts, namely a Banksia sp. and a Eucalyptus sp., as well as a native Protea sp. in South Africa and on Pistachio in Italy. These records from GenBank have been identified previously as B. lutea. The common occurrence of B. australis on a variety of native hosts across Australia suggests that this fungus is native to this area.

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Section: Discussionmentioning

confidence: 99%

“…Botryosphaeria acaciae (Hansford) Dingley (ϭ Physalospora acaciae Hansford) causes galls and cankers on Acacia spp. in Australia and New Zealand (Hansford 1954, Dingley 1970). Both of the latter studies, however, report that the teleomorph structures and galls also are associated with a Diplodia sp.…”

Section: Discussionmentioning

confidence: 99%

Multiple Gene Sequences Delimit Botryosphaeria australis sp. nov. from B. lutea

et al. 2004

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“…A. alternata f, sp. fragariae has been reported as a pathogen of strawberries (Fragaria chiloensis Duchesne) (20) and A. alternata f. sp. lycopersici causes a stem canker of tomato (34).…”

Section: Host Range Of Alternaria Alternatamentioning

confidence: 99%

Alternaria leaf blight of maize

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“…De forma análoga, embora as espécies A. chicorri, A. brassicae e A. brassicicola sejam relatadas incidindo em sementes de hortaliças, os conídios dessas espécies possuem maior comprimento, isto é, 46,0 --350,00 x 8,0 -30,0 μm (LIMA et al, 2003, BRASIL/MAPA, 2009. A espécie A. sonchi, considerado agente etiológico da 'mancha de alternaria' em alface, também pode ser refutado, uma vez que seus conídios medem 60,0 -91,0 x 12,0 -19,0 μm, além de possuir bicos de tamanho muito maior: 22,0 μm (DINGLEY, 1970).…”

Section: Espécie De Alternariaunclassified

CARACTERIZAÇÃO MORFOLÓGICA DE Alternaria alternata ASSOCIADO A SEMENTES DE ALFACE AMERICANA CV. ‘ASTRA’

Muniz

Marques

Peixoto

et al. 2018

Rev. Agric. Neotrop.

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A mancha de alternaria, cujo agente causal é o fungo, Alternaria spp., encontra-se distribuída pelas áreas de plantio de hortaliças no Brasil onde frequentemente a doença é veiculada por sementes contaminadas. Neste sentido, a qualidade sanitária e fisiológica de sementes é fundamental para o estabelecimento uniforme das culturas em campo, sendo um dos fatores que garantem o sucesso da produção da olerícola. O objetivo deste trabalho foi caracterizar o fungo Alternaria associado a sementes de alface americana cv. ‘Astra’. A análise de incidência foi realizada pelo método blotter test, empregando-se o delineamento inteiramente casualizado (DIC), com quatro repetições (50 sementes gerbox-1). Após sete dias a 20 ºC (± 2 ºC) e foto período de 12 h, a avaliação foi realizada examinando-se individualmente todas as sementes em microscópio estereoscópio para a confecção de lâminas semipermanentes, a qual foi realizada mediante a remoção de micélio e estruturas fúngicas encontradas sobre as sementes infectadas, para caracterização e identificação da espécie do fungo incidente. Os conídios encontrados apresentaram dimensões de 13,7 - 25,7 x 6,2 - 12,4 μm (18,6 x 8,8 μm), formato de pera invertida, com coloração marrom clara e, cujos bicos apresentaram dimensões de 2,2 - 11,0 μm (4,7 μm). Estas características discriminaram o fungo como A. alternata.

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Records of fungi parasitic on plants in New Zealand 1966–68

Cited by 19 publications

References 12 publications

Multiple Gene Sequences Delimit Botryosphaeria australis sp. nov. from B. lutea

Multiple Gene Sequences Delimit Botryosphaeria australis sp. nov. from B. lutea

Alternaria leaf blight of maize

CARACTERIZAÇÃO MORFOLÓGICA DE Alternaria alternata ASSOCIADO A SEMENTES DE ALFACE AMERICANA CV. ‘ASTRA’

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