Hyphomycetes from soil of an area affected by copper mining activities in the State of Bahia, Brazil

Costa, Isabella P M Wanderley; Cavalcanti, M. A. Q.; Fernandes, Maria José; Lima, Débora María Massa

doi:10.1590/s1517-83822006000300017

Cited by 9 publications

(17 citation statements)

References 13 publications

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“…In the Brazilian semiarid region, Silva & Cavalcanti (1990;1991) Total T1 T2 T3 T4 T5 T6 T1 T2 T3 T4 T5 T6 T1 T2 T3 T4 T5 Several of the fungal species found here were reported in areas of the Brazilian semiarid region (Maia & Gibertoni 2002;Cavalcanti et al, 2006;Costa et al 2006). The prevalence of Aspergillus and Penicillium occurs probably because these genera have a high number of species and are capable of surviving in dry environments (Dix & Webster 1995).…”

Section: Discussionmentioning

confidence: 60%

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Filamentous fungi isolated from the rhizosphere of melon plants (Cucumis melo L. cv. Gold Mine) cultivated in soil with organic amendments

2010

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Rhizosphere soil samples were collected in a semiarid area, in the region of the São Francisco River valley, Petrolina, Pernambuco state, Brazil, to study the diversity of filamentous fungi in a soil cultivated with melon (Cucumis melo L. cv. Gold Mine) and receiving different organic amendments: Treatment 1 (control, without organic compost); T2 (77% coconut fiber, 20% goat manure and 3% K2SO4); T3 (10% Ricinus communis leaves and stems, 50% Pennisetum purpureum leaves and 40% goat manure); T4 (77% coconut fiber, 20% goat manure and 3% termophosphate); T5 (47% Pennisetum purpureum leaves, 50% goat manure and 3% K2SO4); and T6 (57% Pennisetum purpureum leaves, 40% goat manure and 3% termophosphate). Fungal isolation was carried out by the serial dilution technique to 1:1000. The Sorensen index of similarity, frequency and distribution of the fungi were evaluated. Seventy-eight species of filamentous fungi were isolated and identified, plus several Basidiomycota (04) and Mycelia sterilia (02). The predominant genera were Aspergillus and Penicillium, with 15 and 13 species, respectively. A greater number of species was found in the sowing period (49), and in relation to the organic fertilization, treatment 6 provided the greatest species diversity (43 species). Most of the species are saprobes and only a few are considered to be potential pathogens on melon plants, such as Fusarium oxysporum, F. solani and Myrothecium roridum.

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Section: Discussionmentioning

confidence: 60%

“…Most of the fungi found in the melon rhizosphere was registered in rhizosphere and non-rhizosphere soils in Brazil and other countries (Silva & Cavalcanti 1990, 1991Cavalcanti & Maia 1994;Maia & Gibertoni 2002;Mandeel 2002;Souza-Motta et al 2003;Ananda & Sridhar 2004;Cavalcanti et al 2006;Costa et al 2006;Grishkan et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Filamentous fungi isolated from the rhizosphere of melon plants (Cucumis melo L. cv. Gold Mine) cultivated in soil with organic amendments

2010

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“…Corroborando esse resultado, a presença natural desse fungo não foi verificada em solo ou rizosfera de ambientes agrícolas e florestais, como o girassol (CAVALCANTI et al, 2003), cana-de-açúcar (SANTOS et al, 1989), tomate (SILVA et al, 1990), soja e algodão (CARVALHO, 2008), goiaba (SILVÉRIO, 2007), uva-do-japão (PRADE et al, 2006) e citros (PRADE et al, 2007). Em levantamentos da diversidade fúngica realizados em diversos biomas brasileiros, como a Caatinga (COSTA et al, 2006;SIMÕES;TAUK-TORNISIELO, 2006), Cerrado (CARVALHO, 2008) e Mata Atlântica (GARLIPP, 1995;TAUK-TORNISIELO et al, 2005), esse patógeno também não foi encontrado.…”

Section: Resultados E Discussão Ocorrência Natural De B Bassiana No unclassified

PERSISTÊNCIA NO SOLO DE INÓCULO DE Beauveria bassiana EMPREGADO PARA O CONTROLE DE Hedypathes betulinus EM PLANTIO DE Ilex paraguariensis

Borges¹,

Lázzari²,

Pimentel³

et al. 2011

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O controle da broca-da-erva-mate, Hedypathes betulinus, limita-se ao emprego de práticas silviculturais e catação manual dos insetos adultos, não sendo permitido o uso de inseticidas químicos na cultura. Esta pesquisa teve por objetivos verificar a presença natural de Beauveria bassiana no solo de plantio em monocultura de erva-mate, determinar a persistência de B. bassiana no solo após duas e três aplicações do fungo e averiguar a influência de fatores abióticos na estabilidade do fungo no solo. O estudo foi conduzido em um erval no município de Campo Alegre, Santa Catarina, Brasil, onde foram coletadas amostras de solo em duas áreas, para avaliação da presença natural de inóculos do fungo B. bassiana, procedendo-se à contagem, isolamento e identificação.Não foi detectada a ocorrência natural do fungo no solo em nenhuma das duas áreas. Após essa confirmação, foram realizadas pulverizações com B. bassiana em ambas as áreas, sendo que em uma ocorreram duas e na outra três aplicações. Após a última pulverização, realizada em fevereiro/2006, verificou-se que os inóculos do fungo persistiram por 90 dias na área com duas aplicações e 120 dias na área com três aplicações. A temperatura afetou a persistência do fungo no solo em ambas as áreas, mas a umidade relativa não mostrou influência sobre os inóculos em campo.Palavras-chave: Broca-da-erva-mate; controle biológico; epizootia; fungo entomopatogênico. AbstractPersistence in soil of inoculum of Beauveria bassiana used to control Hedypathes betulinus in yerba maté plantation, Ilex paraguariensis. Control measures of Hedypathes betulinus are restricted to agricultural practices and hand picking of adult insects. No chemical control is allowed in yerba maté cultivation areas. The objectives of this research were to verify the natural occurrence of the entomopathogenic fungus Beauveria bassiana in the soil of yerba maté in monoculture; to determine the persistence of inoculums in the soil after applications of the fungus; and to evaluate the influence of abiotic factors on fungus stability in the soil. The soil samples were taken from two experimental areas in a yerba maté plantation in the county of Campo Alegre, Santa Catarina, Brazil. The samples were analyzed in order to count, isolate and identify inoculums of B. bassiana and other fungi. After the confirmation that B. bassiana was not present in the soil, a suspension of the fungus was applied, twice in one of the areas and three times in the other. After the last application in February/2006, the inoculum persisted for 90 and 120 days, in the area with two and three applications, respectively. The temperature affected the persistence of B. bassiana in soil; however, the relative humidity did not.Keywords: Biological control; epizooty; entomopathogenic fungus; wood borer.

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“…Schew) Ditm ex Fr., is a serious pathosystem in cultivated areas. The genus Myrothecium includes eight reported species 5 , out of which many are saprophyte soil inhabitants 6 . M. roridum considered as an important plant pathogen, affecting more than 200 plant species of different botanical families 7,8 and has been reported as a key pathogen of cucurbits causing leaf spot / blight 9,10 .…”

Section: Introductionmentioning

confidence: 99%

Antifungal Potential of Indigenous Medicinal Plants against Myrothecium Leaf Spot of Bitter Gourd ( Momordica charantia L.)

Abid

Chohan

Mehmood

et al. 2017

Braz. arch. biol. technol.

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Bitter gourd is of great importance due to its usage against the treatment of numerous ailments in human beings. A comprehensive survey at four localities of Southern Punjab, Pakistan was carried out to determine the severity of Myrothecium leaf spot. Maximum disease severity was at C1 (Chak 11/NP) and least at C2 (Kot Mehtab). Among isolated species Myrothecium roridum was found more prevalent and pathogenic as compared to M. verrucaria. Antifungal activity using solvent extracts of five medicinal plants (Mangifera indica, Melia azedarach, Nicotiana tabacum, Moringa oleifera and Eucalyptus globosum) were evaluated against isolated species by agar well diffusion method at various concentrations (0.01, 0.10, 1.0 and 10.0 µg / mL). N. tabacum revealed maximum zone size (13.40 mm and 8.28 mm) with ethanol and chloroform solvents respectively followed by M. azedarach (9.00mm and 6.48mm). However, least inhibition was observed with ethanol and chloroform extracts of E. globosum (6.04mm and 3.88mm zone size respectively). Ethanol extracts showed highest activity when compared to chloroform extracts. Qualitative phytochemical analysis showed that all the selected plants are rich in chemical compounds such as alkaloids, terpenoids, flavonoids and phenols whereas Saponins was only present in N. tabacum while absent in rest of the extracts.

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Hyphomycetes from soil of an area affected by copper mining activities in the State of Bahia, Brazil

Cited by 9 publications

References 13 publications

Filamentous fungi isolated from the rhizosphere of melon plants (Cucumis melo L. cv. Gold Mine) cultivated in soil with organic amendments

Filamentous fungi isolated from the rhizosphere of melon plants (Cucumis melo L. cv. Gold Mine) cultivated in soil with organic amendments

PERSISTÊNCIA NO SOLO DE INÓCULO DE Beauveria bassiana EMPREGADO PARA O CONTROLE DE Hedypathes betulinus EM PLANTIO DE Ilex paraguariensis

Antifungal Potential of Indigenous Medicinal Plants against Myrothecium Leaf Spot of Bitter Gourd ( Momordica charantia L.)

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