2020
DOI: 10.1590/0001-3765202020180426
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Effective microorganisms inoculant: Diversity and effect on the germination of palisade grass seeds

Abstract: Effective microorganisms (EM) are inoculants formed by fungi and bacteria isolated from soil. EM are commonly used by farmers on agronomic crops to stimulate plant growth, but their composition and their benefi ts has been controverted. This study aimed to analyze the diversity of microorganisms growing in three EM inoculants, as well as to evaluate their effi ciency in the germination of palisade grass seeds. The total DNA of the three EM inoculants was extracted, the 16S rRNA and ITS genes were amplifi ed by… Show more

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Cited by 5 publications
(6 citation statements)
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References 28 publications
(19 reference statements)
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“…The application of microbiological biopreparations aims at the improvement of physicochemical properties and biological activity of arable soils. According to the primary conception, Effective Microorganisms (EM) vaccines introduced into the soil are supposed to beneficially affect the soil characteristic and, ultimately, yield amount and quality [60,61]. However, the results of the present research on the effect of the bacterial vaccine on the content of carbon, nitrogen, and other elements studied do not confirm any clear tendencies determining these relations (Tables 1-3).…”
Section: Discussioncontrasting
confidence: 55%
“…The application of microbiological biopreparations aims at the improvement of physicochemical properties and biological activity of arable soils. According to the primary conception, Effective Microorganisms (EM) vaccines introduced into the soil are supposed to beneficially affect the soil characteristic and, ultimately, yield amount and quality [60,61]. However, the results of the present research on the effect of the bacterial vaccine on the content of carbon, nitrogen, and other elements studied do not confirm any clear tendencies determining these relations (Tables 1-3).…”
Section: Discussioncontrasting
confidence: 55%
“…Even in works carried out in Brazil, there is a variation in the microbial diversity of inoculants. Santos et al [36] . identified the genera, Candida, Peniophora, Penicillium, Uwebraunia, and Fusarium , inoculant prepared from EM the Zona da Mata region of Minas Gerais, in southeastern Brazil.…”
Section: Discussionmentioning
confidence: 99%
“…Microrganismos eficientes de diferentes ambientes de captura podem apresentar composição microbiana diferente (SANTOS et al, 2020) e, consequentemente, diferentes respostas para uma mesma variável, ressaltando que a concentração do inóculo também é decisivo na obtenção desses resultados. Santos et al (2020) evidenciaram que sementes embebidas em soluções de 1 e 2% de microrganismos eficientes capturados da área de mata promoveram maiores porcentagens de germinação e índice de velocidade de germinação em sementes de Urochloa brizantha cv Marandu se comparado com o tratamento de 100%, e justifica esses resultados pela presença de microrganismos capazes de produzir fito-hormônios como giberelinas, auxinas, citocinas, ácido indolacético e ácido abscísico. Além da baixa abundância desses microrganismos nas menores concentrações, uma vez que mesmo considerando a produção benéfica de fito-hormônios, essas substâncias em altas doses tornam-se tóxicas ao desenvolvimento de plântulas.…”
Section: Discussionunclassified
“…A exposição das sementes a altas concentrações do inóculo pode comprometer a competição por nutrientes entre os microrganismos eficientes e o embrião da semente (SANTOS et al, 2020), interferindo negativamente no desenvolvimento de plântula. Esta relação poderia explicar porque os tratamentos irrigados inibiram totalmente o desenvolvimento de plântulas, uma vez que para essa condição houve uma maior carga de microrganismos aplicados no solo (Figura 2 e Figura 3).…”
Section: Discussionunclassified
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