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Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice

Recently, there has been much interest on the application of PGPR and rhizobia as multi-strain biofertilizer for crops to benefit from the consortium of biochemical characteristics. Several laboratory and glasshouse studies were conducted to assess the beneficial effects of locally isolated PGPR and...

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Main Author: Tan, Ali Kee Zuan
Format: Conference or Workshop Item
Language:English
Published: Omics Publishing Group 2016
Online Access:http://psasir.upm.edu.my/id/eprint/53599/1/Plant%20growth.pdf
http://psasir.upm.edu.my/id/eprint/53599/
https://www.omicsonline.org/proceedings/plant-growthpromoting-rhizobacteria-pgpr-and-rhizobia-as-multistrain-biofertilizers-for-improved-growth-and-yield-of-ric-55773.html
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spelling my.upm.eprints.535992017-11-15T03:22:59Z http://psasir.upm.edu.my/id/eprint/53599/ Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice Tan, Ali Kee Zuan Recently, there has been much interest on the application of PGPR and rhizobia as multi-strain biofertilizer for crops to benefit from the consortium of biochemical characteristics. Several laboratory and glasshouse studies were conducted to assess the beneficial effects of locally isolated PGPR and rhizobia on Malaysian rice variety, MR219. Based on 16S rDNA gene sequencing, these bacterial strains were identified as Lysinibacillus xylanilyticus, Alcaligenes faecalis, Bradyrhizobium japonicum, Rhizobium etli and Bacillus subtilis. These isolates were selected as a potential strains in the development of multi-strain biofertilizer for having multiple beneficial abilities namely biological nitrogen fixation, solubilization of phosphate and potassium, production of phytohormone, hydrolyzing enzymes and iron siderophore. Laboratory study has demonstrated the effectiveness of these strains on early growth and vigor of rice seedlings under controlled condition. A subsequent glasshouse studies have showed a significant improvement of rice growth and yield with bacterial inoculations, particularly when supplied with minimal fertilizer-N rate (33% from the recommended rate). Single and multi-strain inoculations also significantly promoted plant and root growth, tiller numbers, plant dry weight, nutrient accumulations and produced a lower 15N enrichment than uninoculated control that received similar N-fertilizer (33% N). The lower 15N enrichment indicates the occurrence of biological N2 fixation. The proportion of N uptake from atmosphere was estimated at 22% Ndfa. The study revealed a possible new and beneficial biofertilizer formulation to promote growth and yield of rice plants at reduced chemical N-fertilizer input in a sustainable and environmental-friendly agricultural system. Omics Publishing Group 2016 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/53599/1/Plant%20growth.pdf Tan, Ali Kee Zuan (2016) Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice. In: 7th Global Summit on Agriculture & Horticulture, 17-19 Oct 2016, Kuala Lumpur, Malaysia. (p. 31). https://www.omicsonline.org/proceedings/plant-growthpromoting-rhizobacteria-pgpr-and-rhizobia-as-multistrain-biofertilizers-for-improved-growth-and-yield-of-ric-55773.html 10.4172/2168-9881.C1.021
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Recently, there has been much interest on the application of PGPR and rhizobia as multi-strain biofertilizer for crops to benefit from the consortium of biochemical characteristics. Several laboratory and glasshouse studies were conducted to assess the beneficial effects of locally isolated PGPR and rhizobia on Malaysian rice variety, MR219. Based on 16S rDNA gene sequencing, these bacterial strains were identified as Lysinibacillus xylanilyticus, Alcaligenes faecalis, Bradyrhizobium japonicum, Rhizobium etli and Bacillus subtilis. These isolates were selected as a potential strains in the development of multi-strain biofertilizer for having multiple beneficial abilities namely biological nitrogen fixation, solubilization of phosphate and potassium, production of phytohormone, hydrolyzing enzymes and iron siderophore. Laboratory study has demonstrated the effectiveness of these strains on early growth and vigor of rice seedlings under controlled condition. A subsequent glasshouse studies have showed a significant improvement of rice growth and yield with bacterial inoculations, particularly when supplied with minimal fertilizer-N rate (33% from the recommended rate). Single and multi-strain inoculations also significantly promoted plant and root growth, tiller numbers, plant dry weight, nutrient accumulations and produced a lower 15N enrichment than uninoculated control that received similar N-fertilizer (33% N). The lower 15N enrichment indicates the occurrence of biological N2 fixation. The proportion of N uptake from atmosphere was estimated at 22% Ndfa. The study revealed a possible new and beneficial biofertilizer formulation to promote growth and yield of rice plants at reduced chemical N-fertilizer input in a sustainable and environmental-friendly agricultural system.
format Conference or Workshop Item
author Tan, Ali Kee Zuan
spellingShingle Tan, Ali Kee Zuan
Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice
author_facet Tan, Ali Kee Zuan
author_sort Tan, Ali Kee Zuan
title Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice
title_short Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice
title_full Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice
title_fullStr Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice
title_full_unstemmed Plant growth-promoting Rhizobacteria (PGPR) and Rhizobia as multi-strain biofertilizers for improved growth and yield of rice
title_sort plant growth-promoting rhizobacteria (pgpr) and rhizobia as multi-strain biofertilizers for improved growth and yield of rice
publisher Omics Publishing Group
publishDate 2016
url http://psasir.upm.edu.my/id/eprint/53599/1/Plant%20growth.pdf
http://psasir.upm.edu.my/id/eprint/53599/
https://www.omicsonline.org/proceedings/plant-growthpromoting-rhizobacteria-pgpr-and-rhizobia-as-multistrain-biofertilizers-for-improved-growth-and-yield-of-ric-55773.html
_version_ 1643835436850741248
score 13.211869

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