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Outro2017

Grass and Forage Sciencehttps://doi.org/10.1111/gfs.12336 (DOI, nova aba)

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

  • Monyck Jeane dos Santos Lopes
  • Moacyr Bernardino Dias-Filho
  • Thaís Helena Castro
  • Gisele Barata da Silva

Registro provisório: a atribuição a Moacyr Bernardino Dias-Filho ainda não foi verificada em fonte institucional (dados de indexadores como OpenAlex/Crossref).

Fontes: Crossref · Lattes · OpenAlex

Resumo

Abstract 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.

Resumo conforme Crossref.

Palavras-chave

  • Brachiaria brizantha
  • plant growth-promoting rhizobacteria
  • Burkholderia pyrrocinia
  • Pseudomonas fluorescens
  • light intensity
  • shade tolerance
  • phenotypic plasticity
  • forage grass growth
  • co-inoculation
  • biofertilizers
  • silvopastoral systems
  • biomass production
  • chlorophyll content
  • leaf area

Termos atribuídos por OpenAlex.

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