Novos hospedeiros de Fuligo septica no Estado do Maranhão

Silva, Gilson Soares da; Ferreira, Isabel Cristina Madeira; Bitencourt, Natália Véras

doi:10.1590/s0100-54052008000100025

Cited by 2 publications

(1 citation statement)

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“…Known to occur in the state of Maranhão where it has been recorded on cultivated plants (Silva and Bezerra, 2005;Silva et al, 2008), this species is frequently mentioned in literature for different environments but so far it haven't been recorded from mangroves.…”

Section: (1780)mentioning

confidence: 99%

Myxomycetes from mangroves: species occurring in the state of Maranhão, northeastern Brazil

2015

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Mangrove swamps and forests cover over 137,000 km 2 distributed latitudinally among subtropical zones, 7% of which are in Brazil, with a greater density in the country's northernmost region. Considering that the community of Myxomycetes recorded for this environment is hardly known, three areas located in the state of Maranhão were investigated. Two field trips were conducted, one at the beginning of the rainy season and another during the dry season. In each area, two plots (125 m 2 ) equidistant 100 m apart from each other were surveyed. In these areas, standing dead tree trunks and dead branches still attached to the mother plant that were above the tideline, were examined. On these same occasions, samples of the aerial litter and from the cortex of living trees (Rhizophora) were collected for the preparation of moist chambers cultures. Twenty-one specimens were obtained from field and moist chambers, belonging to 11 species, distributed in nine genera and five families. Seven species are new records from Maranhão. There was a predominance of r-strategist (73%) over K-strategist (27%) species. Cribraria violacea, Comatricha tenerrima, Echinostelium minutum, and Fuligo septica are new worldwide records from mangrove environments, and Oligonema flavidum is reported for the first time from Brazil.Keywords: Myxobiota, mangrove swamps, Oligonema, Rhizophora, microhabitat. Myxomycetes em manguezais: espécies ocorrentes no estado do Maranhão, nordeste do Brasil ResumoOs manguezais ocupam mais de 137.000 km 2 , distribuídos latitudinalmente entre as zonas subtropicais e 7% encontra-se no Brasil, com maior densidade entre os estados do Pará e Maranhão, na região norte do país. Considerando que a comunidade de mixomicetos registrada para este ambiente é pouco conhecida, três áreas localizadas no estado do Maranhão foram investigadas. Duas excursões foram realizadas, uma no início da estação chuvosa e outra na estiagem. Em cada área, foram georeferenciadas e exploradas duas parcelas (125 m 2 ) equidistantes 100 m uma da outra foram avaliadas. Nestas, foram explorados troncos mortos em pé e galhos mortos ainda presos à planta-mãe, acima da linha da maré. Nas mesmas ocasiões foram coletadas amostras de folhedo aéreo e córtex de árvores vivas (Rhizophora) para montagem de câmaras-úmidas. Foram obtidos 21 espécimes de campo e câmara-úmida, pertencentes a 11 espécies, distribuídas em nove gêneros e cinco famílias. Sete espécies são novos registros para o Maranhão. Predominaram espécies r-estrategistas (73%), e 27% K-estrategistas. Cribraria violacea, Comatricha tenerrima, Echinostelium minutum e Fuligo septica são novos registros para o ambiente de manguezal, e Oligonema flavidum é registrada pela primeira vez no Brasil.

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Section: (1780)mentioning

confidence: 99%

Myxomycetes from mangroves: species occurring in the state of Maranhão, northeastern Brazil

2015

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False Bean Smut Caused by Slime Mold

Agra¹,

Seixas²,

Dianese³

2018

Plant Disease

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Identification of the “bean smut” reported in 1998 in abstracts from two conferences was later disseminated by a Plant Disease Note; citations in books, papers, and blogs; and in several official sites, including databases curated by the United States Department of Agriculture and Embrapa-Brazil. After seeing the illustration of the syndrome in 2002, the need became clear for a review of the so-called bean smut. Field collections indicated that it is common in no-till bean and soybean farming in Brazil. Our studies revealed that the “bean smut” attributed to Ustilago sp. or “Ustilago phaseoli” and, later, to “Microbotryum phaseoli” is not a real smut but is Physarum cinereum (Physaraceae, Physarales, Myxomycetes), sporulating superficially on leaves, stems, and pods of dry bean and soybean. To unravel this imbroglio, we produced detailed morphological documentation supported by molecular treatment. This will correct the spread and further incorporation of an error in the literature based upon mistaken taxonomical work related to a plant-associated nonpathogenic organism.

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Novos hospedeiros de Fuligo septica no Estado do Maranhão

Cited by 2 publications

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Myxomycetes from mangroves: species occurring in the state of Maranhão, northeastern Brazil

Myxomycetes from mangroves: species occurring in the state of Maranhão, northeastern Brazil

False Bean Smut Caused by Slime Mold

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