Fungos filamentosos isolados do solo em municípios na região Xingó, Brasil

Cavalcanti, María Auxiliadora de Queiroz; Oliveira, Laerte; Fernandes, Maria José; Lima, Débora María Massa

doi:10.1590/s0102-33062006000400008

Cited by 33 publications

(29 citation statements)

References 21 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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“…A vegetação dominante é do tipo Caatinga (Savana Estépica Arborizada - Veloso et al 1992). O clima da região é característico do semi-árido, com precipitação anual de 500 mm (Cavalcanti et al 2006) e temperatura média anual de 25ºC, sendo maior que 27ºC nos meses mais quentes do ano (INPE 2001).…”

Section: Methodsunclassified

Verbenaceae sensu stricto na região de Xingó: Alagoas e Sergipe, Brasil

et al. 2009

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RESUMO(Verbenaceae sensu stricto na região de Xingó: Alagoas e Sergipe, Brasil) Este trabalho consiste no estudo taxonômico da família Verbenaceae s. s. em uma área de influência da Usina Hidrelétrica de Xingó, situada sob o domínio da região semi-árida, no nordeste brasileiro. A vegetação predominante é a Caatinga com diferentes fisionomias ainda pouco estudadas. Foram encontradas oito espécies distribuídas em três gêneros: Lantana camara L., Lantana canescens Kunth, Lippia alba (Mill.) N. E. Br., Lippia gracilis Schauer, Lippia microphylla Cham., Lippia pedunculosa Hayek, Stachytarpheta angustifolia (Mill.) Vahl e Stachytarpheta microphylla Walp. Nesta área, as espécies distribuem-se principalmente em ambientes secos, em solos areno-argilosos ou pedregosos, sendo as espécies do gênero Stachytarpheta Vahl encontradas em ambientes úmidos ou alagados. São fornecidas chaves de identificação para os gêneros e espécies, bem como ilustrações dos caracteres diagnósticos e comentários sobre distribuição geográfica dos táxons. Palavras-chave: florística, Verbenaceae, Xingó, Caatinga. ABSTRACT(Verbenaceae sensu stricto in the region of Xingó: Alagoas and Sergipe, Brazil) A taxonomic study for the family Verbenaceae s. s. was performed in the region of the influence area of the Xingó hydroelectric, situated under the domain of semi-arid region in northeastern Brazil. The predominant vegetation at the study area is Caatinga but phytosociological approaches for this area are lack. Eight species were found distributed in three genera: Lantana camara L., Lantana canescens Kunth, Lippia alba (Mill.) N. E. Br., Lippia gracilis Schauer, Lippia microphylla Cham., Lippia pedunculosa Hayek, Stachytarpheta angustifolia (Mill.) Vahl and Stachytarpheta microphylla Walp. In this area, the species are distributed mainly along dry environments in sandy-clayey or stony soils, and species of the genus Stachytarpheta Vahl found in flooded or wet environments. Identification keys for determining genera and species determinations are given, as well as illustrations with diagnostic characters and comments on geographical distribution of taxa.

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“…Therefore, it is necessary to study microbial communities and the processes they trigger to understand both their diversity and the effects of environmental disturbances or stresses on such communities (Cavalcanti et al, 2006). This aspect can be observed in the Catimbau Valley, where the extraction of wood for firewood is very common, especially in the municipalities of Buíque, Tupanatinga, and Ibimirim.…”

Section: Introductionmentioning

confidence: 99%

Anthropization Effects on the Filamentous Fungal Community of the Brazilian Catimbau National Park

Cruz

Ramos

Fonseca

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:The Caatinga biome features an exclusive endemic biodiversity, and is characterized by the presence of xerophytic, deciduous vegetation, high temperatures, and low rainfall. This important park has undergone anthropization, especially through extraction of firewood and timber and growing plants for raising goats. The objectives of this study were to compare the communities of filamentous fungi present in the preserved area and in the anthropized soil of the Catimbau National Park in Buíque, PE, Brazil, and to evaluate the impacts of anthropization on such communities. A total of 12 collections of soil samples were made, six in the preserved area and six in the anthropic area, and the physicochemical properties of the soil samples were analyzed. Fungi were isolated through suspension and serial dilution methods. After growth, the samples were purified and identified based on classical taxonomy, according to specific literature. The diversity, evenness, richness, dominance, frequency, and similarity among the species of filamentous fungi in both areas were assessed based on ecological indexes. A total of 4,488 colony-forming units of filamentous fungi were obtained, which were distributed into 65 species belonging to 15 genera. In the preserved area, higher abundance and richness of species were observed, with predominance of the genera Aspergillus and Penicillium. In both areas, diversity and equitability were high, demonstrating that the species are well distributed in these areas. In the preserved area, the dominant genera were Aspergillus, Gongronella, and Penicillium, whereas Aspergillus was the dominant genus in the anthropic area. Two distinct communities were observed in the areas analyzed. Principal component analysis showed that Penicillium simplicissimum influences the total diversity of both communities. The anthropization that occurred in the Catimbau National Park has changed the composition of the filamentous fungal communities of the site, restricting the number of species and decreasing the abundance of these important microorganisms. This results in ecosystem damage and likely causes relevant major imbalances, with serious consequences, such as possible disappearance of the aforementioned species, as well as of species yet undiscovered by the scientific community.

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Fungos filamentosos isolados do solo em municípios na região Xingó, Brasil

Cited by 33 publications

References 21 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

Verbenaceae sensu stricto na região de Xingó: Alagoas e Sergipe, Brasil

Anthropization Effects on the Filamentous Fungal Community of the Brazilian Catimbau National Park

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