Rizóbios nativos do Rio Grande do Sul simbioticamente eficientes em Lotus glaber

Fontoura, Ricardo de Albuquerque; Frizzo, Márcio Leandro dos Santos; Sá, Enílson Luiz Saccol de; Filho, Benjamin Dias Osório; Tonon, Brenda Cristye; Binz, Andreia; Silva, Marta Coutinho da; Camargo, Flávio Anastácio de Oliveira; Selbach, Pedro Alberto

doi:10.1590/s0103-84782011000300012

Cited by 4 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isolates UFRPE Cm244 and 677 were generally effective, and their average SNA was around 83 and 85 % of that accumulated by plants receiving 120 kg ha -1 N. These effects are similar to those found by Fontoura et al (2011) who found that inoculated Lotus glaber plants, cultivated in Leonard jars, accumulated similar levels of N as plants fertilized with 100 kg ha -1 N.…”

Section: Resultssupporting

confidence: 85%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 85%

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

View full text Add to dashboard Cite

show abstract

“…These results demonstrate the high efficiency of these isolated (Table 3) which were higher than those found in the literature, as the study of symbiosis between rhizobia grown forage legumes (Scheffer-Basso et al, 2001;Frizzo, 2007) and (Scheffer-Basso et al, 2001). Fontoura et al (2011) obtained similar results with the inoculation of rhizobia in Lotus glaber.…”

Section: Discussionsupporting

confidence: 65%

Rhizobia isolation and selection for serradella (Ornithopus micranthus) in Southern Brazil

Machado¹,

de²,

Oldra³

et al. 2016

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

Serradella is a plant that belongs to the Fabaceae family, with recognized forage value and has the ability to associate symbiotically with rhizobia. The objective of this study was to isolate, authenticate and select effective rhizobia obtained from native serradella (Ornithopus micranthus) to reduce the need for mineral fertilizer. Nodules, roots of serradella and rhizosphere soil samples were collected in seven municipalities from Rio Grande do Sul and Santa Catarina states. Bacterial colonies were isolated and identified based on morphological characteristics. The authentification and initial selection of rhizobia were conducted in vitro. The most promising strains from the in vitro study were evaluated in a greenhouse experiment for 60 days. Among the 148 bacterial cultures characterized, 113 induced the formation of nodules in serradella while 32 isolate effectively increased fresh mass of plants under in vitro conditions. The strains UFRGS Om57, UFRGS Om59 and UFRGS Om148 formed nodules with greater dry mass and produced high dry mass of plants (shoots and roots) which allowed greater accumulation of N in the shoots.

show abstract

“…Deficiencies in N and P are generally the main reason for pasture degradation (Boddey et al, 2004), particularly N deficiency caused by high N losses from soil-plant-animal systems (Lira et al, 2006). An interesting alternative that could retain N in pasture soils are legume-grass consortiums, in view of their ability to fix atmospheric N 2 (Santos et al, 2005;Fontoura 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

View full text Add to dashboard Cite

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.(

show abstract

Rizóbios nativos do Rio Grande do Sul simbioticamente eficientes em Lotus glaber

Cited by 4 publications

References 14 publications

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

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

Rhizobia isolation and selection for serradella (Ornithopus micranthus) in Southern Brazil

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

Contact Info

Product

Resources

About