Patogenicidade cruzada de Ceratobasidium spp. do caquizeiro (Diospyros kaki) e do chá(Camellia sinensis) e reação de cultivares de caqui ao patógeno

Souza, Eduardo César Pereira; Basseto, Marco Antonio; Boliani, Aparecida Conceição; Takada, Hélio Minoru; Ceresini, Paulo Cézar

doi:10.1590/s0100-54052009000100001

Cited by 4 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After incubation, the colonized tooth-picks were gently inserted in the leaves at the plants apex. To maintain the plants under high humidity, a cotton wool ball moistened with sterilized water was placed inside the plastic bags covering the plants (Souza et al 2009). The inoculated plants were incubated at 25°C and 12 h photoperiod and observed daily.…”

Section: Pathogenicity Testsmentioning

confidence: 99%

Two new Ceratobasidium species causing white thread blight on tropical plants in Brazil

Melo

Matos

Moreira

et al. 2018

Trop. plant pathol.

View full text Add to dashboard Cite

White thread blight is one of the most common diseases affecting several tree species that grow in warm and humid regions. The typical symptoms of this disease include blighted leaves hanging by a white thread of fungal hyphae. Leaf samples exhibiting white thread blight symptoms were collected from neem (Azadirachta indica A. Juss) and Brazilian cherry pitanga (Eugenia uniflora L.) plants in Northeastern Brazil, and from Indian green-tea (Camellia sinensis (L.) O. Kuntze), coffee (Coffea arabica L.), and persimmon (Diospyros kaki L.) in agricultural areas neighboring the Atlantic forest in Southeastern Brazil. Fungal isolates were obtained indirectly from leaf fragments or directly by transferring mycelia and sclerotia to culture medium. Bright field and scanning electron microscopy images revealed the association of Rhizoctonia-like hyphae and basidiospores with the infected leaves. In pathogenicity tests, Rhizoctonia-like fungal isolates induced leaf necrosis on their hosts, and the pathogens were reisolated from inoculated plants. Phylogenetic analyses based on sequences of the ITS rRNA region indicated the occurrence of Ceratobasidium lineages distinct from previously reported Ceratobasidium species. Our study leads to the description of two new species of Ceratobasidium: the fungal isolates from A. indica, C. sinensis, and E. uniflora were classified as Ceratobasidium niltonsouzanum sp. nov., and those obtained from C. arabica and D. kaki as Ceratobasidium chavesanum sp. nov.

show abstract

Section: Pathogenicity Testsmentioning

confidence: 99%

Two new Ceratobasidium species causing white thread blight on tropical plants in Brazil

Melo

Matos

Moreira

et al. 2018

Trop. plant pathol.

View full text Add to dashboard Cite

show abstract

First Report of White Thread Blight Caused by Ceratobasidium niltonsouzanum on Yerba Mate in Argentina

Lima

Kryvenki²,

Conforto

et al. 2020

Plant Disease

View full text Add to dashboard Cite

Evidence that the Ceratobasidium-like white-thread blight and black rot fungal pathogens from persimmon and tea crops in the Brazilian Atlantic Forest agroecosystem are two distinct phylospecies

et al. 2012

View full text Add to dashboard Cite

The white-thread blight and black rot (WTBR) caused by basidiomycetous fungi of the genus Ceratobasidium is emerging as an important plant disease in Brazil, particularly for crop species in the Ericales such as persimmon (Diospyros kaki) and tea (Camellia sinensis). However, the species identity of the fungal pathogen associated with either of these hosts is still unclear. In this work, we used sequence variation in the internal transcribed spacer regions, including the 5.8S coding region of rDNA (ITS-5.8S rDNA), to determine the phylogenetic placement of the local white-thread-blight-associated populations of Ceratobasidium sp. from persimmon and tea, in relation to Ceratobasidium species already described world-wide. The two sister populations of Ceratobasidium sp. from persimmon and tea in the Brazilian Atlantic Forest agroecosystem most likely represent distinct species within Ceratobasidium and are also distinct from C. noxium, the etiological agent of the first description of white-thread blight disease that was reported on coffee in India. The intraspecific variation for the two Ceratobasidium sp. populations was also analyzed using three mitochondrial genes (ATP6, nad1 and nad2). As reported for other fungi, variation in nuclear and mitochondrial DNA was incongruent. Despite distinct variability in the ITS-rDNA region these two populations shared similar mitochondrial DNA haplotypes.

show abstract

Patogenicidade cruzada de Ceratobasidium spp. do caquizeiro (Diospyros kaki) e do chá(Camellia sinensis) e reação de cultivares de caqui ao patógeno

Cited by 4 publications

References 2 publications

Two new Ceratobasidium species causing white thread blight on tropical plants in Brazil

Two new Ceratobasidium species causing white thread blight on tropical plants in Brazil

First Report of White Thread Blight Caused by Ceratobasidium niltonsouzanum on Yerba Mate in Argentina

Evidence that the Ceratobasidium-like white-thread blight and black rot fungal pathogens from persimmon and tea crops in the Brazilian Atlantic Forest agroecosystem are two distinct phylospecies

Contact Info

Product

Resources

About