Plant growth-promoting endophytic bacteria on maize and sorghum1
ABSTRACT Plant growth-promoting bacteria (PGPB) are found in plant tissues and promote plant growth by secretion of hormones and enzymes, or by facilitating the nutrient uptake. This study assessed forty PGPB isolates to determine their effects on maize and sorghum growth. These isolates were also compared with uninoculated plants, as negative (-N; without N fertilization) and positive (+N; with N fertilization) controls. Plant height, stem diameter, shoot and root dry mass, leaf N accumulation and chlorophyll content were evaluated. For both the maize and sorghum, the height, stem diameter and shoot dry mass in plants inoculated with PGPB were similar to those of uninoculated plants supplied with N, and the responses for root mass were higher than in plants supplied with N. However, the PGPB isolates did not promote N accumulation and chlorophyll content similar to those of uninoculated plants supplied with N. The IPACC26 and IPACC30 isolates, both identified as Bacillus subtilis, resulted in better responses for plant growth and N accumulation than the other isolates.
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2019
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oai:scielo:S1983-406320190001002392019-11-22Plant growth-promoting endophytic bacteria on maize and sorghum1Aquino,João Pedro Alves deMacedo Junior,Francisco Barbosa deAntunes,Jadson Emanuel LopesFigueiredo,Marcia do Vale BarretoAlcântara Neto,Francisco deAraujo,Ademir Sérgio Ferreira de Bacillus subtilis nitrogen accumulation chlorophyll ABSTRACT Plant growth-promoting bacteria (PGPB) are found in plant tissues and promote plant growth by secretion of hormones and enzymes, or by facilitating the nutrient uptake. This study assessed forty PGPB isolates to determine their effects on maize and sorghum growth. These isolates were also compared with uninoculated plants, as negative (-N; without N fertilization) and positive (+N; with N fertilization) controls. Plant height, stem diameter, shoot and root dry mass, leaf N accumulation and chlorophyll content were evaluated. For both the maize and sorghum, the height, stem diameter and shoot dry mass in plants inoculated with PGPB were similar to those of uninoculated plants supplied with N, and the responses for root mass were higher than in plants supplied with N. However, the PGPB isolates did not promote N accumulation and chlorophyll content similar to those of uninoculated plants supplied with N. The IPACC26 and IPACC30 isolates, both identified as Bacillus subtilis, resulted in better responses for plant growth and N accumulation than the other isolates.info:eu-repo/semantics/openAccessEscola de Agronomia/UFGPesquisa Agropecuária Tropical v.49 20192019-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-40632019000100239en10.1590/1983-40632019v4956241 |
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Aquino,João Pedro Alves de Macedo Junior,Francisco Barbosa de Antunes,Jadson Emanuel Lopes Figueiredo,Marcia do Vale Barreto Alcântara Neto,Francisco de Araujo,Ademir Sérgio Ferreira de |
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Aquino,João Pedro Alves de Macedo Junior,Francisco Barbosa de Antunes,Jadson Emanuel Lopes Figueiredo,Marcia do Vale Barreto Alcântara Neto,Francisco de Araujo,Ademir Sérgio Ferreira de Plant growth-promoting endophytic bacteria on maize and sorghum1 |
author_facet |
Aquino,João Pedro Alves de Macedo Junior,Francisco Barbosa de Antunes,Jadson Emanuel Lopes Figueiredo,Marcia do Vale Barreto Alcântara Neto,Francisco de Araujo,Ademir Sérgio Ferreira de |
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Aquino,João Pedro Alves de |
title |
Plant growth-promoting endophytic bacteria on maize and sorghum1 |
title_short |
Plant growth-promoting endophytic bacteria on maize and sorghum1 |
title_full |
Plant growth-promoting endophytic bacteria on maize and sorghum1 |
title_fullStr |
Plant growth-promoting endophytic bacteria on maize and sorghum1 |
title_full_unstemmed |
Plant growth-promoting endophytic bacteria on maize and sorghum1 |
title_sort |
plant growth-promoting endophytic bacteria on maize and sorghum1 |
description |
ABSTRACT Plant growth-promoting bacteria (PGPB) are found in plant tissues and promote plant growth by secretion of hormones and enzymes, or by facilitating the nutrient uptake. This study assessed forty PGPB isolates to determine their effects on maize and sorghum growth. These isolates were also compared with uninoculated plants, as negative (-N; without N fertilization) and positive (+N; with N fertilization) controls. Plant height, stem diameter, shoot and root dry mass, leaf N accumulation and chlorophyll content were evaluated. For both the maize and sorghum, the height, stem diameter and shoot dry mass in plants inoculated with PGPB were similar to those of uninoculated plants supplied with N, and the responses for root mass were higher than in plants supplied with N. However, the PGPB isolates did not promote N accumulation and chlorophyll content similar to those of uninoculated plants supplied with N. The IPACC26 and IPACC30 isolates, both identified as Bacillus subtilis, resulted in better responses for plant growth and N accumulation than the other isolates. |
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Escola de Agronomia/UFG |
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2019 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-40632019000100239 |
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