Seleção de fungos micorrízicos arbusculares e ectomicorrízicos para simbioses eficientes com Acacia mangium willd

Angelini, Guilherme Augusto Robles; Júnior, Orivaldo José Saggin; Silva, Eliane Maria Ribeiro da

doi:10.5433/1679-0359.2013v34n6suppl1p3529

Cited by 2 publications

(2 citation statements)

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“…Além disso, a espécie exibiu estratégia de crescimento devido maior área foliar específica (SLA) (Tabela 2). A estratégia de crescimento em solo com maior concentração de fósforo pode estar relacionada à associação de A. mangium Willd e fungos micorrízicos em suas raízes, pois essa associação mostra-se eficiente em promover o crescimento para maior absorção de fósforo em solos de baixa fertilidade (ANGELINI, 2008;GORDINHO, 2015). Ainda no lado positivo da PC1, as parcelas P2, P5, e P10 apresentaram menor abundância de A. mangium Willd em solo com matéria orgânica (MO), cálcio (Ca), relação cálcio/magnésio (Ca+Mg) e saturação de bases (SB%), ou seja, solo de melhor fertilidade, ainda sim mantendo estratégia de crescimento, devido a maior área foliar específica (SLA) (Tabela 2).…”

Section: Análise De Dadosunclassified

EFFECT OF FUNCTIONAL STRATEGIES AND ABUNDANCE OF Acacia mangium Willd ON THE NUMBER OF NATIVE SPECIES IN A SECONDARY FOREST FRAGMENT IN SOUTHERN AMAPA, BRAZIL

Silva,

Matos

2024

Bol. Mus. Integr. Roraima (Online)

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Acacia mangium Willd is a fast-growing exotic tree that, when inserted in a different environment, can present an invasive potential in secondary forests. This study aimed to analyze the effect of abundance and functional strategies of A. mangium Willd and edaphic factors on native species richness in a secondary forest fragment located behind the Instituto Federal do Amapá campus Laranjal do Jari, Amapá. For this, all tree individuals with diameter at breast height (DBH) ≥ 10 cm occurring in 10 plots of 200 m2 distributed in the fragment were identified. Soil samples were collected in the plots and sent for fertility and granulometry analysis. Three leaf functional attributes of individuals of A. mangium Willd occurring in the plots were measured: leaf area (LA), leaf thickness (LT) and specific leaf area (SLA). A total of 145 tree individuals and 14 species were sampled, with A. mangium Willd being the most abundant with 95 individuals. The relative abundance of A. mangium Willd was negatively related to native species richness in the fragment. The species also exhibited distinct leaf attributes and abundances according to the variation in soil acidity and fertility in the fragment, which influenced the number of native species. There is a need to develop monitoring and management of invasive exotic species such as A. mangium Willd in fragments of secondary forests, since the species is invasive and opportunistic, and can inhibit the regeneration of native species after local disturbances.

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Section: Análise De Dadosunclassified

EFFECT OF FUNCTIONAL STRATEGIES AND ABUNDANCE OF Acacia mangium Willd ON THE NUMBER OF NATIVE SPECIES IN A SECONDARY FOREST FRAGMENT IN SOUTHERN AMAPA, BRAZIL

Silva,

Matos

2024

Bol. Mus. Integr. Roraima (Online)

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“…Thus the selection and inoculation of mycorrhizal fungi with beneficial functions can contribute to the establishment of seedlings and the recovery of degraded areas, since they accelerate plant development and increase the tolerance to transplant stress and to restoration of nutrient cycling Soares & Carneiro, 2010;Angelini et al, 2013).…”

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Inoculum production of arbuscular mycorrhizal fungi native to soils under different forest covers

2017

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The low natural fertility of Brazilian soils requires the use of inoculants that facilitate the absorption of nutrients by plants. Arbuscular mycorrhizal fungi such as obligatory biotrophics of active roots perform this function, but access to this resource is limited by the difficulty in producing inoculants. The objective of this study was to investigate the production of AMF inoculants native of soils under different forest covers in Vitória da Conquista, BA, by means of spore quantification, colonization rate and species identification. For this purpose, soils were collected from sites under Mata Nativa (native forest) and plantations of Madeira Nova (Pterogyne nitens) and Eucalyptus, placed into separate 500 mL disposable cups with seeds of Brachiaria sp. and cultivated for five months. Spores were quantified and the AMF species identified in the control soil (without brachiaria) and in the cups cultivated with brachiaria at each month. From the first month, the colonization rate of brachiaria roots was evaluated. The inoculants produced showed differences in the number of spores and species, in the AMF species identified, and in the root colonization rate as a function of the forest cover. Thus, considering the increase in the number of spores, species and colonization over time, the inoculant produced from the soil under native forest was more promising for utilization. Produção de inóculos de fungos micorrízicos arbusculares nativos de solos sob diferentes coberturas florestaisA baixa fertilidade natural dos solos brasileiros requer o uso de inoculantes que facilitem a absorção de nutrientes pelas plantas. Os fungos micorrízicos arbusculares como biotróficos obrigatórios de raízes ativas desempenham esta função, porém o acesso a este recurso é limitado pela dificuldade na produção de inoculantes. Com isso, o objetivo deste trabalho foi avaliar a produção de inoculantes de FMAs nativos de solos sob diferentes coberturas florestais em Vitória da Conquista -BA, através da quantificação de esporos, taxa de colonização e identificação de espécies. Para isso, foram coletados solos nas coberturas florestais de Mata Nativa e em plantios de Madeira Nova e Eucalipto, colocados separadamente em vasos com braquiária e cultivados por cinco meses. No solo testemunha e a cada mês foram quantificados os esporos e identificadas as espécies de FMAs e, a partir do primeiro mês, avaliou-se a taxa de colonização das raízes da braquiária. Os inoculantes produzidos apresentaram diferenças no número de esporos e espécies, nas espécies de FMAs identificadas e na taxa de colonização das raízes, dependendo da cobertura florestal. Assim, considerando o aumento no número de esporos, espécies e colonização ao longo do tempo, o inoculante produzido a partir do solo da Mata Nativa apresentou-se mais promissor para o uso.Palavras-chave: simbionte; vaso armadilha; recuperação florestal. 198Renata Soares dos Santos et al.

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Seleção de fungos micorrízicos arbusculares e ectomicorrízicos para simbioses eficientes com Acacia mangium willd

Cited by 2 publications

References 12 publications

EFFECT OF FUNCTIONAL STRATEGIES AND ABUNDANCE OF Acacia mangium Willd ON THE NUMBER OF NATIVE SPECIES IN A SECONDARY FOREST FRAGMENT IN SOUTHERN AMAPA, BRAZIL

EFFECT OF FUNCTIONAL STRATEGIES AND ABUNDANCE OF Acacia mangium Willd ON THE NUMBER OF NATIVE SPECIES IN A SECONDARY FOREST FRAGMENT IN SOUTHERN AMAPA, BRAZIL

Inoculum production of arbuscular mycorrhizal fungi native to soils under different forest covers

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