Eficiência simbiótica de isolados de rizóbio noduladores de feijão-fava (Phaseolus lunatus L.)

Antunes, Jadson Emanuel Lopes; Gomes, Regina Lúcia Ferreira; Lopes, Ângela Célis de Almeida; Araújo, Ademir Sérgio Ferreira de; Lyra, Maria do Carmo Catanho Pereira de; Figueiredo, Márcia do Vale Barreto

doi:10.1590/s0100-06832011000300011

Cited by 15 publications

(27 citation statements)

References 14 publications

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“…Similar to the differences between these isolates and the recommended strains observed for NDM, Antunes et al (2011) also identified native isolates with a higher efficiency than that of strains recommended for faba bean.…”

Section: Resultssupporting

confidence: 67%

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Symbiotic capability of calopo rhizobia from an agrisoil with different crops in Pernambuco

Calheiros¹,

Lira

Soares³

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYBiological nitrogen fixation by rhizobium-legume symbiosis represents one of the most important nitrogen sources for plants and depends strongly on the symbiotic efficiency of the rhizobium strain. This study evaluated the symbiotic capacity of rhizobial isolates from calopo (Calopogonium mucunoides) taken from an agrisoil under Brachiaria decumbens pasture, sabiá (Mimosa caesalpiniifolia) plantations and Atlantic Forest areas of the Dry Forest Zone of Pernambuco. A total of 1,575 isolates were obtained from 398 groups. A single random isolate of each group was authenticated, in randomized blocks with two replications. Each plant was inoculated with 1 mL of a bacterial broth, containing an estimated population of 10 8 rhizobial cells mL -1 . Forty-five days after inoculation, the plants were harvested, separated into shoots, roots and nodules, oven-dried to constant mass, and weighed. Next, the symbiotic capability was tested with 1.5 kg of an autoclaved sand:vermiculite (1:1) mixture in polyethylene bags. The treatments consisted of 122 authenticated isolates, selected based on the shoot dry matter, five uninoculated controls (treated with 0, 50, 100, 150, or 200 kg ha -1 N) and a control inoculated with SEMIA 6152 (=BR1602), a strain of Bradyrhizobium japonicum. The test was performed as described above. The shoot dry matter of the plants inoculated with the most effective isolates did not differ from that of plants treated with 150 kg ha -1 N. Shoot dry matter was positively correlated with all other variables. The proportion of effective isolates was highest among isolates from sabiá forests. There was great variation in nodule dry weight, as well as in N contents and total N. Index terms: Calopogonium mucunoides, biological N fixation, forage legumes, tropical legumes.(

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Section: Resultssupporting

confidence: 67%

“…The selection of strains with a high biological N fixation (BNF) potential could increase dry matter accumulation and thus N accumulation by legumes (Antunes et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Symbiotic capability of calopo rhizobia from an agrisoil with different crops in Pernambuco

Calheiros¹,

Lira

Soares³

et al. 2013

Rev. Bras. Ciênc. Solo

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“…This cutoff may be considered high and can differentiate the isolates phylogenetically, as reported by Antunes (2010) studying the diversity of bacteria in Phaseolus lunatus L., where the cutoff was 80%. We found Bacillus as the most important genus associated with the stalk and leaves of sugarcane.…”

Section: Resultsmentioning

confidence: 99%

Diversity of plant growth-promoting bacteria associated with sugarcane

Antunes¹,

Lyra²,

Ollero³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. The sugarcane (Saccharum spp) presents economic importance, mainly for tropical regions, being an important Brazilian commodity. However, this crop is strongly dependent on fertilizers, mainly nitrogen (N). This study assessed the plant growth-promoting bacteria (PGPB) associated with sugarcane that could be used as a potential inoculant to the crop. We evaluated the genetic diversity of PGPB in the plant tissue of sugarcane varieties (RB 867515, RB 1011, and RB 92579). The primer BOX-A1R was used to differentiate the similar isolated and further sequencing 16S rRNA ribosomal gene. The 16S rRNA gene showed the presence of seven different genera distributed into four groups, the genus Bacillus, followed by Paenibacillus (20%), Burkholderia (14%), Herbaspirillum (6%), Pseudomonas (6%), Methylobacterium (6%), and Brevibacillus (3%). The molecular characterization of endophytic isolates from sugarcane revealed a diversity of bacteria colonizing this plant, with a possible biotechnological potential to be used as inoculant and biofertilizers.

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“…Positive and significant correlations are frequently found between SDM and SNA in inoculation studies, which is one of the bases for strain selection for inoculant production (Nascimento et al, 2010;Antunes et al, 2011), particularly in greenhouse experiments.…”

Section: Resultsmentioning

confidence: 99%

“…Higher legume yields and consequently higher biological N fixation rates may be obtained through the selection of rhizobial strains with higher biological nitrogen fixation (BNF) efficiency (Antunes et al, 2011;Rahmani et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Symbiotic Effectiveness and Competitiveness of Calopo Rhizobial Isolates in an Argissolo Vermelho-Amarelo Under Three Vegetation Covers in the Dry Forest Zone of Pernambuco

Calheiros

Lira

Santos

et al. 2015

Rev. Bras. Ciênc. Solo

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Biological N fixation in forage legumes is an important alternative to reduce pasture degradation, and is strongly influenced by the inoculant symbiotic capability. This paper evaluates the effectiveness of Calopo (Calopogonium mucunoides) rhizobial isolated from soil under three vegetation covers of an Argissolo Vermelho-Amarelo of the Dry Forest Zone of Pernambuco. An experiment was conducted evaluating 25 isolates, aside from 5 uninoculated controls with 0; 309; 60; 90 and 120 kg ha -1 N, and a treatment inoculated with the SEMIA 6152 strain. The first cut was performed 45 days after inoculation and a second and third cut after 45-day-intervals. Shoot N content was quantified at all cuts. Shoot dry mass was affected by N rates at all cuts. Shoot dry mass increased from the first to the second cut in inoculated plants. There was no difference between rhizobial isolates from the different plant covers for any of the variables. Most variables were significantly and positively correlated.

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Eficiência simbiótica de isolados de rizóbio noduladores de feijão-fava (Phaseolus lunatus L.)

Cited by 15 publications

References 14 publications

Symbiotic capability of calopo rhizobia from an agrisoil with different crops in Pernambuco

Symbiotic capability of calopo rhizobia from an agrisoil with different crops in Pernambuco

Diversity of plant growth-promoting bacteria associated with sugarcane

Symbiotic Effectiveness and Competitiveness of Calopo Rhizobial Isolates in an Argissolo Vermelho-Amarelo Under Three Vegetation Covers in the Dry Forest Zone of Pernambuco

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