Eficiência e diversidade fenotípica de bactérias diazotróficas que nodulam caupi [Vigna unguiculata (L.) Walp] e feijoeiro (Phaseolus vulgaris L.) em solos de mineração de bauxita em reabilitação

Melloni, Rogério; Moreira, Fatima M. de S.; Nóbrega, Rafaela Simão Abrahão; Siqueira, José Oswaldo

doi:10.1590/s0100-06832006000200005

Cited by 36 publications

(36 citation statements)

References 12 publications

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“…impacted by mining since rhizobium strains adapt to the soil and climatic conditions of a region, effectively contributing to plant growth, a characteristic that may not be present in the reference strains recommended. The importance of selecting microorganisms indigenous to degraded areas for use as inocula to favor plant development and, consequently, environmental recovery were observed by Melloni et al (2006). This biotechnology may effectively contribute to soil N and organic matter enrichment, and would be a factor to stimulate acceleration of plant succession in these environments (Siqueira et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Rhizobia Isolated from Coal Mining Areas in the Nodulation and Growth of Leguminous Trees

Moura

Armas

Meyer

et al. 2016

Rev. Bras. Ciênc. Solo

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An alternative for recovery of areas degraded by coal mining is revegetation with rapidly growing leguminous trees, which often do not establish in low fertility soils. The objective of this study was to evaluate the efficiency of native rhizobia isolated from coal mining areas in the nodulation and growth of leguminous trees. We isolated 19 strains of rhizobia from a degraded soil near Criciúma, SC, Brazil, and evaluated the nodulation and growth-promoting capacity of the inoculated isolates for bracatinga (Mimosa scabrella), maricá (M. bimucronata) and angico-vermelho (Parapiptadenia rigida). Isolates UFSC-B2, B6, B8, B9, B11 and B16 were able to nodulate bracatinga, providing average increases of 165 % in shoot dry matter, with a significant contribution to N accumulation. Isolates UFSC-B5, B12, and M8 favored nodulation and growth of maricá, especially isolate UFSC-B12, which promoted increases of 370 % in N accumulation compared to treatment with N fertilizer. All strains were inefficient in promoting growth and N uptake by angico-vermelho. In conclusion, isolation and use of selected rhizobia for bracatinga and maricá plant inoculation can contribute to the growth and accumulation of N, with prospects for use in programs for revegetation of degraded soils in coal mining areas.

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Section: Resultsmentioning

confidence: 99%

Rhizobia Isolated from Coal Mining Areas in the Nodulation and Growth of Leguminous Trees

Moura

Armas

Meyer

et al. 2016

Rev. Bras. Ciênc. Solo

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“…Martins (1996) reported this feature in 25 % of the isolates from soil samples from Petrolina, from the Sertão (semi-arid region) in the State of Pernambuco, using cowpea as trap plant. This frequency was considered high for the crop, which is usually associated with isolates with typical characteristics of strains from the genus Bradyrhizobium (Martins et al, 1997;Melloni et al, 2006), which in turn comprises, generally, slow-growth strains with ability to alkalinize the culture medium (Santos et al, 2007). The evolution of the incidence of rapid-growth isolates over approximately 15 years, from 25 to 62 %, associated with this culture in soils of the lower half of the São Francisco river valley, may be related to climate changes.…”

Section: Phenotypic Characteristics and Groupingmentioning

confidence: 99%

Biodiversity of rhizobia associated with cowpea cultivars in soils of the lower half of the São Francisco River Valley

Leite

Seido

Passos

et al. 2009

Rev. Bras. Ciênc. Solo

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The biodiversity of rhizobium in soils of the São Francisco Valley is unknown and can be studied using cowpea as trap plants. The objective of this study was to verify the diversity of diazotrophic bacteria that nodulate cowpea in soils of the lower half of the São Francisco River Valley by morphological and genotypic characterization. Seven soil samples (A1, A2, A3, A4, C1, C2 and MC) were collected to capture bacteria associated to five cowpea cultivars (IPA 206, BRS Pujante, BRS Marataoã, Canapu Roxo, and Sempre Verde), in a 5x7 factorial design with three replications. Thirty days after plant emergence, the nodules were collected and the bacteria isolated and analyzed in relation to their growth characteristics in YMA medium. The 581 isolates were grouped in 49 morphologic groups. Of this total, 62.3 % formed colonies in up to three days, 33.4 % grew from the 6 th day on, and 4.3 % began to grow 4 to 5 days after incubation. Regarding the formation of acids and alkalis, 63 % acidified the medium, 12 % made it alkaline and 25 % maintained the medium at neutral pH. The highest diversity was observed in the A3 sample and in isolates associated with the cultivars Canapu Roxo and BRS Pujante. Thirty-eight representative isolates were chosen for the genotypic characterization, clustered in four groups based on the restriction analysis of 16s rDNA. This grouping was strongly correlated with the sampling site; 13 rhizobium isolates had an electrophoretic profile distinct from the standard rhizobium strains used in this study.

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“…No entanto, escassas e inconsistentes ainda são as pesquisas sobre a ecofisiologia da microbiota do solo, em especial aquelas que visam interpretar suas interações bióticas e abióticas através de parâmetros reducionistas ou os chamados indicadores ecológicos (MELLONI et al, 2006). O objetivo deste trabalho foi determinar atributos relacionados aos fungos micorrízicos arbusculares tais como a colonização radicular, o número mais provável de propágulos infectivos, índices de diversidade e sua relação a atributos químicos do solo visando utilizá-los como indicadores em áreas degradadas e em recuperação na região sob desertificação de Gilbués, PI, no Nordeste brasileiro.…”

Section: Introductionunclassified

Fungos micorrízicos arbusculares como indicadores da recuperação de áreas degradadas no nordeste do Brasil

Carneiro¹,

Júnior²,

Pereira³

et al. 2012

Rev. Ciênc. Agron.

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Eficiência e diversidade fenotípica de bactérias diazotróficas que nodulam caupi [Vigna unguiculata (L.) Walp] e feijoeiro (Phaseolus vulgaris L.) em solos de mineração de bauxita em reabilitação

Cited by 36 publications

References 12 publications

Rhizobia Isolated from Coal Mining Areas in the Nodulation and Growth of Leguminous Trees

Rhizobia Isolated from Coal Mining Areas in the Nodulation and Growth of Leguminous Trees

Biodiversity of rhizobia associated with cowpea cultivars in soils of the lower half of the São Francisco River Valley

Fungos micorrízicos arbusculares como indicadores da recuperação de áreas degradadas no nordeste do Brasil

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