Diversidade de fungos micorrízicos arbusculares em pomar orgânico no semiárido cearense

Dantas, Belchior Luiz; Weber, Olmar Baller; Neto, João Pereira Maciel; Rossetti, Adroaldo Guimarães; Pagano, Marcela C.

doi:10.1590/0103-8478cr20130097

Cited by 9 publications

(8 citation statements)

References 12 publications

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“…In organic orchards of semi-arid lands [9], and artificial grasslands and cultivated areas [10], the occurrence and diversity of arbuscular mycorrhizal fungi, which are considered significant biofertilizers (see next section), is an important outcome. Moreover, several arbuscular mycorrhizal fungi show a global distribution (Glomus intraradices/fasciculatum group, G. mosseae, G. hoi, as well as the Glomus and Scutellospora [8]).…”

Section: The Soil Mycobiomementioning

confidence: 99%

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

et al. 2017

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Abstract:In order to achieve a desirable ecological and sustainable agriculture a thorough understanding of the plant-soil mycobiome is imperative. Commercial industrial agriculture alters greenhouse gas emissions, promotes loss of plant and soil biodiversity, increases pollution by raising atmospheric CO 2 , and releases pesticides, thus affecting both terrestrial and aquatic ecosystems. Diversified farming systems, including perennial cultivated pastures, are among worldwide strategies that aim to reduce terrestrial greenhouse gas emissions and deal with threats to global sustainability. Additionally, stimulation of soil microbes and appropriate soil management can influence soil interactions as well as the rates of organic matter decomposition and the release of gases. Agricultural soil microbial communities play a central role in ecosystem processes and are affected by biocontrol agents, biofertilizers, and exposure to pesticides, the extent to which is yet to be fully elucidated. Intercropping different plant species is beneficial, as this can increase carbon fixation by plants, transferring carbon to the soil, especially via mycorrhizas, thus modifying interplant interactions. This review focuses on agro-ecosystems, showing the latest advances in the plant-soil interface (the mycobiome) for an eco-efficient agricultural production.

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Section: The Soil Mycobiomementioning

confidence: 99%

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

et al. 2017

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“…Souza et al (2003), working in a caating area, , observed variation between 34-860 spores per 100 g soil, in a study developed in permanent plots in the Reference Center for Recovery of Degraded Areas of Caatinga (CRAD), in Petrolina, noted that the glomerospore density in soil samples varied between 30 and 300 glomerospores (50 g soil -1 ) and that the plots CaatD and CaatC, with the highest and the lowest degree of vegetation degradation, had lower values of glomerospores (40-53 glomerospores 50 g soil -1 ). While Dantas et al (2015), evaluating the occurrence of AMF in the rhizosphere of fruits in development, under organic management, compared to a native vegetation area in the semi-arid region of Ceará, detected high density of AMF glomerospores (in 100 mL soil) in the natural vegetation area, but not differing statistically from the other areas.…”

Section: Resultsmentioning

confidence: 92%

Arbuscular mycorrhizal fungi activity in Haplic Luvisol on the semi-arid region of Pernambuco Brazil

et al. 2017

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ABSTRACT:The use of microorganisms aiming to improve the availability of nutrients for plants is an important and necessary practice for agriculture. Thus, studies on the AMF occurrence in the brazilian northeastern and efficiency tests using native plants in the region have been intensified on recent decades. Aiming to determine the most probable number (MPN) of infective propagules in the area with native vegetation on the semi-arid region of Pernambuco, municipality of Sertânia, quantify the soil protein related to easily extractable glomalin (SPREEG) and to total glomalin (SPRTG), experiments were conducted in a greenhouse. For this study 10 composite soil samples were collected, with points randomly defined. Samples were homogenized and analyzed for physical and chemical characteristics. Being used for immediate examination and preparation trap cultures (one three-month cycle of propagation) to AMF, using as host plants sorghum (Sorghum bicolor L. Moench), and peanut (Arachis hypogaea L.). To determine the MPN of infective propagules of AMF in Haplic Luvisols, soil inoculum samples were diluted in the proportions of 0, 1:10, 1:100 and 1:1000 (soil inoculum: diluent soil, v:v) with 5 repetitions each, using maize (Zea mays L.) as host plant. The direct count (DC) differed significantly from the indirect (IC) of AMF with averages of 961.3 and 517.4 glomerospores per 100g soil, respectively. The NMP of infective propagules of AMF propagules found was 23 cm -3 and SPREEG and SPRTG were approximately 0.46 and 0.26 mg glomalin g -1 aggregate, respectively. RESUMO: O uso de micro-organismos com o objetivo de melhorar a disponibilidade de nutrientes para as plantas é uma prática importante e necessária para a agricultura. Assim, trabalhos sobre a atividade de fungos micorrízicos arbusculares (FMA) no Nordeste do Brasil e testes de eficiência utilizando plantas nativas da região vêm se intensificando nas últimas décadas. Objetivando determinar o número mais provável (NMP) de propágulos

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“…The above values were affected by the P contents reported in each area, which were 81 and 24mg kg −1 , respectively (Table 1), decreasing the percentage of colonization in area A1-3 and markedly increasing the colonization in area A4-2 because AMC may be adversely affected by soil P concentrations. High soil P content directly decreases the mycorrhizal colonization of several plant species, including acerola, according to YANG et al (2016), DANTAS et al (2015), and TAFFOUO et al (2014. SMITH & SMITH (2011b) reported that plants in good nutritional conditions trigger mechanisms to reduce AMF colonization toward reducing the energy cost of maintaining the fungus in the plant species.…”

Section: Resultsmentioning

confidence: 95%

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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Diversidade de fungos micorrízicos arbusculares em pomar orgânico no semiárido cearense

Abstract: RESUMO Os fungos micorrízicos arbusculares (FMA) são microrganismos chave na manutenção da biodiversidade de plantas

Cited by 9 publications

References 12 publications

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

Advances in Eco-Efficient Agriculture: The Plant-Soil Mycobiome

Arbuscular mycorrhizal fungi activity in Haplic Luvisol on the semi-arid region of Pernambuco Brazil

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

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