Ocorrência e atividade de fungos micorrízicos arbusculares em plantios de eucalipto (eucalyptus sp.) no litoral norte da Bahia, Brasil

Lima, Francisco de Sousa; Soares, Ana Cristina Fermino; Sousa, Carmen

doi:10.1590/s0100-67622013000200006

Cited by 9 publications

(7 citation statements)

References 37 publications

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“…Trufem et al (1989) reported 0.5 spores/g in the soil of the Atlantic Forest of Cardoso Island (Ilha do Cardoso, Brazil), while Souza et al (2003) reported 0.34-8.6 spores/g of the soil in a seasonally dry forest called Caatinga in northeast Brazil. Lima et al (2013) found 0.65-4.07 spores/g in eucalyptus plantations, and Gomide et al (2014) reported 0.26-9.32 spores/g in a semideciduous forest. The density of spores in the present study was also greater than the density obtained by Carvalho et al (2012) (0.18-0.4 spores/g) in the same region.…”

Section: Discussionmentioning

confidence: 98%

Variation of arbuscular mycorrhizal fungal communities along an altitudinal gradient in rupestrian grasslands in Brazil

et al. 2015

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Variation in arbuscular mycorrhizal fungi (AMF) communities is described for the first time in rupestrian grasslands in Brazil along an altitudinal gradient of 700 m (800 to 1400 m a.s.l.). Hypotheses tested were that soil properties influence the variation in AMF communities and that the frequency of the most common species of AMF is inversely influenced by the richness of other AMF. Field and laboratory data were collected on AMF community composition, richness, density, and frequency in the altitudinal gradient, and the relationships with several physical-chemical soil properties and altitude were evaluated. Fifty-one species of AMF were recorded, with 14 species being reported as possibly new to science and nine species representing new records for Brazil. This single elevation gradient alone contains 22% of the known world diversity of AMF. Soil properties and AMF community density and richness varied significantly along the elevation (p < 0.05). AMF density and richness were higher at the intermediate altitude, while AMF species composition differed statistically among the altitudes.

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Section: Discussionmentioning

confidence: 98%

Variation of arbuscular mycorrhizal fungal communities along an altitudinal gradient in rupestrian grasslands in Brazil

et al. 2015

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“…MELLONI et al (2016) confirmed that DS usually shows a marked variation in cultivated soils because AMF spores are affected by several biotic and abiotic factors. LIMA et al (2013) and JIMÉNEZ-LEYVA et al (2017) confirmed that the DS in the rhizosphere is variable and is related to root distribution, morphology, and age, in addition to other factors including soil chemical characteristics (particularly P content), regional rainfall, and AMF species.…”

Section: Resultsmentioning

confidence: 77%

Morphological pattern of colonization by mycorrhizal fungi and the microbial activity observed in Barbados cherry crops

et al. 2017

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Our objective was to evaluate the morphological pattern of colonization by arbuscular mycorrhizal fungi (AMF) as well as to study the microbiological activity of the soil on family farms where Barbados cherry was cultivated. Soil and root samples were selected from four areas in the municipality of Maranguape-CE where Barbados cherry was grown, which were named according to the age of plants in the following manner: A1-3, A2-3, and A3-3 (3 years), and A4-2 (2 years). After sampling, the arbuscular mycorrhizal colonization, morphological colonization pattern, basal soil respiration (SBR), and density of mycorrhizal spores (DS) were analyzed. The Paris-type morphological pattern was predominant in the root system of Barbados cherry; the affinity of this pattern in the culture was clear. Time of installation and management of Barbados cherry orchards in family farming areas promoted reduction in SBR. P levels in the soil may have negatively influenced root colonization and density of mycorrhizal spores.

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“…Nagahashi & Douds (2007) reported that the highest rates of mycorrhizal colonization occurred in the absence or at low levels of phosphate fertilization. However, Lima et al (2013) found that spore density and mycorrhizal colonization had no significant correlation with pH and levels of K, Ca, Mg, Al and organic matter of the soil, but Cover were significant only with the content of P. Table 3 shows the results of the chemical analysis for the soils of the study sites and after five months of spore production. However, no significant relationships were found when correlating the chemical characteristics of the soil with the number of spores, species diversity and mycorrhizal colonization, indicating that the results found in this study were predominantly determined by the soil covers from where the AMFs were collected.…”

Section: Resultsmentioning

confidence: 99%

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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Ocorrência e atividade de fungos micorrízicos arbusculares em plantios de eucalipto (eucalyptus sp.) no litoral norte da Bahia, Brasil

Cited by 9 publications

References 37 publications

Variation of arbuscular mycorrhizal fungal communities along an altitudinal gradient in rupestrian grasslands in Brazil

Variation of arbuscular mycorrhizal fungal communities along an altitudinal gradient in rupestrian grasslands in Brazil

Morphological pattern of colonization by mycorrhizal fungi and the microbial activity observed in Barbados cherry crops

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

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