Caracterização morfológica e molecular de fungos micorrízicos arbusculares isolados de áreas de mineração de gesso, Araripina, PE, Brasil

Silva, Márcia Vanusa da; Carmo, María do; Lyra, Maria do Carmo Catanho Pereira de; Vale, Márcia do; Figueiredo, Barreto; Silva, Maria Luiza Ribeiro Bastos da

doi:10.1590/s2236-89062014000300006

Cited by 7 publications

(5 citation statements)

References 22 publications

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“…Plant establishment and development are associated with mycorrhizal. Mycorrhizal plants have more efficient nutritional strategies than non-mycorrhizal plants, benefiting survival under stress (Mergulhão et al, 2014).…”

Section: Genotypesmentioning

confidence: 99%

Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes

et al. 2019

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The benefits of mycorrhization occur with the growth of hyphae in colonized roots by promoting an increase of the contact surface which improves the initial growth due to a better absorption of water and nutrients. The objective was to evaluate the effect of arbuscular mycorrhizal fungus Rhizophagus clarus inoculation over the initial development and nutritional response of six genotypes of Coffea arabica L. Six genotypes of Coffea arabica L. were used (MGS Aranas, H29-1-8-5, Red Catuai IAC 144, IPR 100, Catigua MG2, Paraíso H 419-1) and with arbuscular mycorrhizal fungus - AMF: Rhizophagus clarus and without the application of the fungus. For the production of coffee seedlings, seeds were placed to germinate in plastic trays with sterile sand. After germination, 10 seedlings of each genotype were transferred to 0.120 dm3 polyethylene tubes with substrate. Then the inoculation of five seedlings of each genotype with the AMF R. Clarus was performed. When the seedlings with and without inoculation with the AMF presented six pairs of leaves they were transplanted to 13-liter pots containing soil (Dystrophic red-yellow latosol). The inoculation favored the initial growth of the coffee plants and its intensity varied according to the genotypes. The genotypes H 29-1-8-5, Red Catuai IAC 144 and Catigua MG 2 were the ones that presented higher shoot dry mass, root dry mass, total dry mass and accumulation of P, in relation to MGS aranãs, Paraiso H 419-1 and IPR 100, so they are the most promising to be inoculated with the arbuscular mycorrhizal fungus.

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Section: Genotypesmentioning

confidence: 99%

Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes

et al. 2019

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“…These authors observed an increase in spore density in areas subjected to strong water stress at the sampling time. Mergulhão et al (2014) also stated that mycorrhizal symbiosis is a plant strategy to overcome biotic and abiotic stresses, increasing spore density under adverse conditions.…”

Section: Resultsmentioning

confidence: 99%

Microbiological properties of soils are sensitive to changes provided by organic cultivation of banana ‘BRS Princesa’ in the semi-arid region

Trindade

Pinheiro

Sousa

2023

Acta Sci. Biol. Sci.

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Soil microbiota has a key role in the dynamics of natural and agro-ecosystems and is sensitive to changes in these environments. This study evaluated changes in the microbiological properties of soils under an organic production system of banana ‘BRS Princesa’ (Musa spp.). The experimental design consisted of completely randomized blocks, with four replications. Treatments consisted of 1) soil cover with green manure and agricultural gypsum at a dose of 2,820 kg ha−1, 2) soil cover with green manure without gypsum application, 3) soil cover with weeds and agricultural gypsum at a dose of 2,820 kg ha−1, 4) soil cover with spontaneous plants without gypsum application, and two controls: 5) soil under native Caatinga and 6) soil under regenerating forest (capoeira). The evaluated properties were β-glucosidase, arylsulfatase, acid phosphatase, fluorescein diacetate hydrolysis activities (FDA), carbon and phosphorus contents in microbial biomass, basal soil respiration, microbial and metabolic quotients, and arbuscular mycorrhizal fungi spore density. Soil samples were collected from the 0–0.20m depth layer in two seasons. No parameter could distinguish the treatments. Spontaneous plants provided conditions equivalent to those under green manure. Agricultural gypsum application also did not influence the microbial biomass and microbiota activity, in the analyzed soil depth. However, β-glucosidase and arylsulfatase activities, the carbon content in microbial biomass, and metabolic and microbial quotients were sensitive to land-use changes and could distinguish areas under organic cultivation from those under native vegetation. Therefore, these properties can be considered good indicators for monitoring the quality of these soils. Furthermore, microbial communities of soils under organic cultivation responded with arylsulfatase activity corresponding to that found in soils under regenerating forest, which may indicate that organic management tends to provide the microbiota with a condition similar to that found under situations that are little disturbing to edaphic living.

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“…This is the first study to include intra-radical spores as part of the quantification of mycorrhizal root structures. Although spores have been recognized as important propagules for the survival of AM fungi (Smith and Read, 2008) and many species regularly form spores inside roots (Mergulhão et al, 2014;Sieverding et al, 2014), they have usually not been considered or have been quantified erroneously as vesicles (Giovanetti and Mosse, 1980;McGonigle et al, 1990).…”

Section: Discussionmentioning

confidence: 99%

“…An intersection was considered colonized if intraradical hyphae, arbuscules, vesicles and/or spores were present. Many studies that have analyzed mycorrhizal colonization have not reported the presence of spores inside roots; however, in this study, we also considered these propagules since some AMF species sporulate within roots (Mergulhão et al, 2014;Sieverding et al, 2014).…”

Section: Mycorrhizal Colonization Ratementioning

confidence: 99%

Changes in arbuscular mycorrhizal fungal communities along a river delta island in northeastern Brazil

Silva

Souza

et al. 2017

Acta Oecologica

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Arbuscular mycorrhizal fungi (AMF) play a key role in the maintenance of the balance of terrestrial ecosystems, but little is known about the biogeography of these fungi, especially on tropical islands. This study aims to compare AMF community structure along a transect crossing a fluvial-marine island and relate these communities with soil and vegetation parameters to shed light on the forces driving AMF community structure on a local scale. We tested the hypothesis that the composition of AMF communities changes across the island, even within short distances among sites, in response to differences in edaphic characteristics and vegetation physiognomies. We sampled roots and soils in five different natural and degraded habitats: preserved mangrove forest (MF), degraded mangrove forest (MD), natural Restinga forest (RF), and two regeneration Restinga forests (RR1 and RR2) on Ilha da Restinga, northeastern Brazil. We determined the mycorrhizal colonization rate and AMF community structure based on morphological spore identification. The island soils were sandy with pH varying from acid to neutral; higher levels of organic matter were registered in RF and lower in MF; other chemical and physical soil attributes differed along the habitat types on the island. In total, 22 AMF species were identified, without any difference in species richness. However, the diversity and composition of AMF communities, spore abundance per families, and mycorrhizal colonization were statistically different among the habitats. The composition of AMF communities was strongly related to soil characteristics, especially the sum of exchangeable bases. Our results indicate that the different habitat types have diverse AMF communities even within short distances among habitats. In conclusion, islands with high spatial heterogeneity in soil parameters and diverse vegetation are potential refuges for the diversity conservation of AM fungi.

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Caracterização morfológica e molecular de fungos micorrízicos arbusculares isolados de áreas de mineração de gesso, Araripina, PE, Brasil

Cited by 7 publications

References 22 publications

Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes

Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes

Microbiological properties of soils are sensitive to changes provided by organic cultivation of banana ‘BRS Princesa’ in the semi-arid region

Changes in arbuscular mycorrhizal fungal communities along a river delta island in northeastern Brazil

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