Population Dynamics of Gluconacetobacter diazotrophicus in Sugarcane Cultivars and Its Effect on Plant Growth

Muñoz‐Rojas, Jesús; Caballero‐Mellado, J.

doi:10.1007/s00248-003-0110-3

Cited by 93 publications

(43 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This observation is consistent with literature reports which indicate that high concentrations of N fertilizers result in a decrease of diazotrophic microbial populations inside plants (Boddey et al, 2006). This effect is caused by the formation of long, pleomorphic, immobile cells when high concentrations of nitrogen sources are applied (Muñoz-Rojas and Caballero-Mellado, 2003). Although the graphic shows a declining trend, it would take a much longer experiment to show that the bacteria were being eliminated from the plant.…”

Section: Discussionsupporting

confidence: 92%

Sugarcane growth promotion by Kosakonia sp. ICB117 an endophytic and diazotrophic bacterium

Kleingesinds¹,

Ferrara²,

Floh³

et al. 2018

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

The present study investigates the strain Kosakonia sp. ICB117, an endophytic, N 2 -fixing bacterium that belongs to a genus recently described. The bacteria were isolated from sugarcane stalks (Saccharum sp. variety SP791011) and inoculated into other sugarcane plants of the same variety. The effect of inoculation on sugarcane growth was then studied in the presence or absence of nitrate supplementation (10 mM). The following plant growth parameters were analyzed: biomass, plant height and number of leaves. Furthermore, CO 2 assimilation and the C and N content of plants were also determined, as was the size of the endophytic bacteria population resulting from the inoculation. The findings showed that inoculation with bacteria (both with or without additional nitrate) led to an increase of plant biomass, CO 2 assimilation, total C and N in the roots, and the number of leaves. In addition, the polyamine putrescine and indole-3-acetic acid were actively released by the bacterium in in vitro assays and might be released in internal plant tissues as well, resulting in plant growth promotion. In conclusion, inoculation of sugarcane with Kosakonia sp. ICB117 increased the efficiency of the plant's metabolism.

show abstract

Section: Discussionsupporting

confidence: 92%

Sugarcane growth promotion by Kosakonia sp. ICB117 an endophytic and diazotrophic bacterium

Kleingesinds¹,

Ferrara²,

Floh³

et al. 2018

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

show abstract

“…Muñoz-Rojas & Mellado-Caballero (2003) concluíram que os ganhos no crescimento da parte aérea das mudas de cana-de-açúcar, advindos da inoculação, dependem da variedade e da estirpe bacteriana utilizada. Marques Júnior et al (2008) testaram o efeito da inoculação de BPC e da aplicação de ácidos húmicos sobre minirrebolos e observaram efeito positivo da inoculação sobre minirrebolos tratados termicamente.…”

Section: Resultsunclassified

Bactérias promotoras de crescimento e adubação nitrogenada no crescimento inicial de cana-de-açúcar proveniente de mudas pré-brotadas

Gírio

Dias

Reis

et al. 2015

Pesq. agropec. bras.

View full text Add to dashboard Cite

Resumo -O objetivo deste trabalho foi avaliar os efeitos da inoculação de bactérias promotoras de crescimento sobre a formação de mudas pré-brotadas de cana-de-açúcar, oriundas de gemas individualizadas, e quantificar o crescimento inicial dessas mudas, em associação à aplicação de nitrogênio, em solo de baixa fertilidade. Foram conduzidos dois experimentos: um em casa de vegetação, com duração de 50 dias, e o outro, em vasos no campo, com duração de 180 dias. Em ambos os experimentos, utilizou-se o delineamento de blocos ao acaso, em arranjo fatorial 2x3, no primeiro experimento -com ou sem inoculante, e com três quantidades de reserva nas gemas -, e 2x2x4, no segundo -com ou sem inoculante, com ou sem nitrogênio, avaliados em quatro épocas: aos 45, 90, 135 e 180 dias. O inoculante produziu efeito na fase inicial de crescimento das mudas pré-brotadas, com aumento na velocidade de brotação e no acúmulo da matéria seca de raízes e da parte aérea, independentemente da quantidade de reserva da gema. No segundo experimento, o inoculante promoveu ganhos no crescimento inicial da parte aérea e do sistema radicular, até os 180 dias após o transplantio, com aumento em altura, perfilhamento, diâmetro do colmo, produção da matéria seca de colmos e de palha e do comprimento radicular, independentemente da aplicação de nitrogênio. O inoculante tem efeito fisiológico positivo sobre o crescimento das plantas.Termos para indexação: Saccharum, bactérias diazotróficas, biofertilizante, fitormônios, fixação biológica de nitrogênio. Plant growth-promoting bacteria and nitrogen fertilization effect on the initial growth of sugarcane from pre-sprouted seedlingsAbstract -The objective of this work was to evaluate the effects of the inoculation with plant growth-promoting bacteria on the formation of sugarcane pre-sprouted seedlings, originated from individual buds, and to quantify the initial growth of these seedlings in association with nitrogen application, in a low fertility soil. Two experiments were carried out: one in greenhouse conditions, with a time span of 50 days, and the other in vases under field conditions, with a time span of 180 days. In both experiments, a randomized complete block design was used with a factorial arrangement of 2x3, in the first experiment -with or without inoculation, and with three quantities of bud reserve -, and of 2x2x4, in the second one -with or without inoculation, with or without nitrogen, evaluated in four times: at 45, 90, 135, and 180 days. The inoculant had effect on the initial growth of the pre-sprouted seedlings, increasing sprouting speed and dry matter accumulation on roots and shoots, regardless of the bud reserve amount. In the second experiment, the inoculant increased the initial growth of shoots and root system up to 180 days after transplantation, increasing height, tillering, stalk diameter, dry matter production of stalks and straw, and root length, regardless of nitrogen application. The inoculant has a positive physiological effect on plant growth.

show abstract

“…Yadav et al (2009) evaluated the effect of Gluconacetobacter diazotrophicus and Trichoderma viride on the soil and yield of sugarcane in India and found that there was an increase in soil organic C, increase in N and retention of essential nutrients in the rhizosphere due to the increase in the microbial population in the soilrhizosphere-root interface. In a study of Muñoz-Rojas & Caballero-Mellado (2003) with micropropagated sugarcane (variety MEX 57-473) inoculated with Gluconacetobacter diazotrophicus, strain PAL5 T , and grown in sterile vermiculite showed increases in the dry weight of roots and shoots and greater accumulation of total N 35 and 75 days after planting, although the concentrations of total N were lower than in the control treatment, indicating the plant growthpromoting effect. Roesch et al (2005) assessed the effect of inoculation with diazotrophic bacteria of the genus Azospirillum on wheat and stated increases in the size and number of root hairs in inoculated plants and increased contents of total N in plant roots and shoots, proving the influence of phytohormones produced by the inoculated strain on the physiology of this cereal.…”

Section: Resultsmentioning

confidence: 99%

Inoculation of sugarcane with diazotrophic bacteria

Schultz

Silva

Sousa

et al. 2014

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

SUMMARYThe sugarcane industry, a strategic crop in Brazil, requires technological improvements in production efficiency to increase the crop energy balance. Among the various currently studied alternatives, inoculation with diazotrophic bacteria proved to be a technology with great potential. In this context, the efficiency of a mixture of bacterial inoculant was evaluated with regard to the agronomic performance and N nutrition of sugarcane. The experiment was carried out on an experimental field of Embrapa Agrobiologia, in Seropédica, Rio de Janeiro, using a randomized block, 2 × 3 factorial design (two varieties and three treatments) with four replications, totaling 24 plots. The varieties RB867515 and RB72454 were tested in treatments consisting of: inoculation with diazotrophic bacteria, N-fertilized control with 120 kg ha -1 N and absolute control (no inoculation and no N fertilizer). The inoculum was composed of five strains of five diazotrophic species. The yield, dry matter accumulation, total N in the shoot dry matter and the contribution of N by biological fixation were evaluated, using the natural 15 N abundance in non-inoculated sugarcane as reference. The bacterial inoculant increased the stalk yield of variety RB72454 similarly to fertilization with 120 kg ha -1 N in the harvests of plant-cane and first ratoon crops, however the contribution of biological N fixation was unchanged by(1) Part of the doctoral thesis of the first author, Post-graduation course in Agronomy -Soil Science (CPGA-CS) at the Rural Federal University of Rio de Janeiro -UFRRJ. Received for publication on January 16, 2013 and approved on January 6, 2014. (2) Post-graduate student at CPGA-CS, Soil Science Department, UFRRJ. BR 465, km 7. CEP 23890-000 Seropédica (RJ), Brazil. O aumento da eficiência produtiva da cana-de-açúcar com tecnologias que possibilitem aumentar seu balanço energético é uma necessidade do setor sucroenergético, por se tratar de uma cultura estratégica para o país. Entre as diversas alternativas atualmente estudadas, o inoculante com bactérias diazotróficas vem se evidenciando uma tecnologia com elevado potencial. Diante desse contexto, este estudo teve como objetivo avaliar a eficiência do inoculante bacteriano no desempenho agronômico e na nutrição nitrogenada da cana-de-açúcar. O ensaio foi realizado no campo experimental da Embrapa Agrobiologia, em Seropédica, RJ. O delineamento experimental foi em bloco ao acaso, em esquema fatorial 2 × 3 (duas variedades e três tratamentos), com quatro repetições, totalizando 24 parcelas. As variedades utilizadas foram a RB867515 e RB72454. Os tratamentos foram: inoculação com bactérias diazotróficas, controle nitrogenado com 120 kg ha -1 de N e controle absoluto (sem inoculação e sem N). O inoculante foi composto por cinco estirpes de cinco espécies de bactérias diazotróficas. As variáveis avaliadas foram a produtividade de colmos, o acúmulo de matéria seca e N total da parte aérea das plantas e a contribuição da fixação biológica de N (FBN), utilizando como referên...

show abstract

Population Dynamics of Gluconacetobacter diazotrophicus in Sugarcane Cultivars and Its Effect on Plant Growth

Cited by 93 publications

References 13 publications

Sugarcane growth promotion by Kosakonia sp. ICB117 an endophytic and diazotrophic bacterium

Sugarcane growth promotion by Kosakonia sp. ICB117 an endophytic and diazotrophic bacterium

Bactérias promotoras de crescimento e adubação nitrogenada no crescimento inicial de cana-de-açúcar proveniente de mudas pré-brotadas

Inoculation of sugarcane with diazotrophic bacteria

Contact Info

Product

Resources

About