Biological nitrogen fixation in C 4 grasses of different growth strategies of South America natural grasslands

Marques, Anderson César Ramos; Oliveira, Leandro Bittencourt de; Nicoloso, Fernando Teixeira; Jacques, Rodrigo Josemar Seminoti; Giacomini, Sandro José; Quadros, Fernando Luíz Ferreira de

doi:10.1016/j.apsoil.2017.01.011

Cited by 37 publications

(24 citation statements)

References 32 publications

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“…The use of plant growth-promoting rhizobacteria (PGPR) could be an alternative for reducing the use of chemical fertilizers, with clear environmental and economic benefits (Nadeem, Ahmad, Zahir, Javaid, & Ashraf, 2014;Paredes & Lebeis, 2016). The beneficial effect of PGPR on forage grasses has been reported for Azospirilum brasilense on B. briazantha (Hungria, Nogueira, & Araujo, 2016), and Azotobacter, Azospirillum and Herbaspirillum on Axonopus affinis, Paspalum notatum, Andropogon lateralis and Aristida laevis (Marques et al, 2017).…”

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confidence: 87%

Light and plant growth‐promoting rhizobacteria effects on Brachiaria brizantha growth and phenotypic plasticity to shade

Lopes

Dias‐Filho

Castro

et al. 2017

Grass and Forage Science

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This is the first report on the effect of light intensity and plant growth‐promoting rhizobacteria (PGPR) on the growth of a tropical forage grass, being a relevant study to improve pasture management in conventional farming and integrated crop‐livestock‐forestry systems. In this study, our aim was to evaluate the effects of light intensity and Burkholderia pyrrocinia and Pseudomonas fluorescens inoculation on Brachiaria brizantha cv. BRS Piatã growth, and phenotypic plasticity to shade. The experiment was conducted in a semi‐controlled environment. Seedlings of B. brizantha were allocated to full sun and shade. P. fluorescens and B. pyrrocinia were inoculated individually or co‐inoculated by soil drench, 14 days after seedling emergence. We evaluated morphogenesis, structural and growth parameters. Irrespective of the light regime, co‐inoculated plants had greater leaf area and SPAD index (chlorophyll content). Increase in total biomass production in co‐inoculated plants was over 100% and 300%, under full sun and shade respectively. Co‐inoculated P. fluorescens and B. pyrrocinia increased shade tolerance in B. brizantha, improving plant performance. Co‐inoculation promoted growth in B. brizantha under both sun and shade, indicating its potential as a bio‐fertilizer in conventional and integrated systems, especially in silvopastoral systems, where light availability to pasture growth may be limited.

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confidence: 87%

Light and plant growth‐promoting rhizobacteria effects on Brachiaria brizantha growth and phenotypic plasticity to shade

Lopes

Dias‐Filho

Castro

et al. 2017

Grass and Forage Science

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“…The mean %Ndfa found by these authors was 23.6%, which is close to the mean value found in 'Coastcross-1' uninoculated of the present study. Marques et al (2017) isolated bacteria of the genera Azospirillum, Herbaspirillum, and Azotobacter from the rhizosphere and grass roots of native grasses grown in the soil of the same region of the present study. A higher %Ndfa was observed for Aristida laevis grass, at approximately 36%, and lower %Ndfa for Axonopus affinis, at 22%, values that are close to those found in 'Coastcross-1' inoculated (35.2%) and uninoculated (27.8%) plants, respectively.…”

Section: Resultsmentioning

confidence: 92%

Biological nitrogen fixation and urea-N recovery in 'Coastcross-1' pasture treated with Azospirillum brasilense

Aguirre

Giacomini

Olivo

et al. 2020

Pesq. agropec. bras.

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The objective of this work was to quantify the inoculation effect of Azospirillum brasilense (Ab-V5 and Ab-V6 strains) on the forage yield, biological nitrogen fixation (BNF), and urea-15N recovery of the forage grass 'Coastcross-1'. The experiment was carried out in a 2 (with or without inoculation) × 2 (without N fertilizer and with 100 kg ha-1 N per year as urea) × 7 (cuts) factorial arrangement. The natural 15N abundance method was used to determine BNF; to determine urea-N recovery, 15N-labeled urea was applied in microplots. Forage yield was higher in grasses subjected to inoculation, with 7.4 Mg ha-1 dry matter per year, for the treatment without N fertilizer, and 8.0 Mg ha-1 dry matter per year for the treatment with 100 kg ha-1 N per year, respectively, which shows an additive effect of inoculation and N fertilization. The contribution of BNF was 23.0 and 53.8 kg ha-1 per year for the unfertilized treatment, both in uninoculated and inoculated plants, respectively. Urea-15N recovery was 13.7 and 16.5 kg ha-1 per year for uninoculated and inoculated treatments, respectively, corresponding to 13.7 and 16.5% of the urea-N applied. Inoculation with A. brasilense increases forage yield and the contribution of BNF to grass nutrition with N, as well as urea-N recovery by the forage grass.

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“…When evaluating the plants in the absence of nitrogen fertilizer, there was an increase of 12 % in the percentage of leaf nitrogen with the inoculation of plants. To reach the same percentage of foliar N found in inoculated plants and without nitrogen application, non-inoculated plants would require the application of 21 kg ha -1 of N. Studying the contribution of microorganisms in the biological fixation of nitrogen in forages, Marques et al (2017) indicated that these microorganisms, among them the genus Azospirillum, colonize the root system of grasses contributing to the nitrogen nutrition of these Rev Bras Cienc Solo 2019;43:e0180234 species. In addition, Azospirillum inoculation may increase the efficiency of nitrogen fertilizer use, which has recently been demonstrated for Ab-V5 and Ab-V6 strains in corn (Martins et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Mitigation of Mombasa Grass ( Megathyrsus maximus ) Dependence on Nitrogen Fertilization as a Function of Inoculation with Azospirillum brasilense

Leite

Santos

et al. 2019

Rev. Bras. Ciênc. Solo

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Using biological inputs to improve the efficiency of nitrogen fertilizers represents an alternative for the cultivation of grasses in tropical regions. Azospirillum brasilense is a species of plant growth promoting bacteria widely studied and used in inoculants. Thus, this study aimed to evaluate the performance of Mombasa grass (Megathyrsus maximus) in association with A. brasilense and nitrogen (N) fertilization.The study was conducted under field conditions in Araguaína-Tocantins State, between December 2017 and May 2018. The treatments were arranged in randomized blocks, in a 5 × 2 factorial arrangement, with five doses of N fertilization (0, 25, 50, 75, and 100 kg ha -1 ) combined with two inoculation treatments (inoculated and non inoculated), in four replicates. For the number of tillers and root production, the inoculation efficiency varied as a function of the supplied N doses. However, the percentage of leaf N was higher for inoculated plants regardless of the application of nitrogen. In the absence of nitrogen fertilization, it was possible to increase forage production by up to 36 % with inoculation.

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Biological nitrogen fixation in C 4 grasses of different growth strategies of South America natural grasslands

Cited by 37 publications

References 32 publications

Light and plant growth‐promoting rhizobacteria effects on Brachiaria brizantha growth and phenotypic plasticity to shade

Light and plant growth‐promoting rhizobacteria effects on Brachiaria brizantha growth and phenotypic plasticity to shade

Biological nitrogen fixation and urea-N recovery in 'Coastcross-1' pasture treated with Azospirillum brasilense

Mitigation of Mombasa Grass ( Megathyrsus maximus ) Dependence on Nitrogen Fertilization as a Function of Inoculation with Azospirillum brasilense

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