Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors

Indole-3-acetic acid (IAA) phytohormone plays an essential role in forming and initiating main, lateral, and adventitious roots in vegetative propagation. Plants are receiving IAA naturally from a diverse group of soil-plant associated rhizobacteria. However, IAA synthesis by rhizoba...

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Main Authors: Veerasamy, Piriya Latha, Ab Aziz, Zakry Fitri, Wong, Sing King, Kasim, Susilawati, Masnindah, Malahubban
Format: Article
Published: 2021
Subjects:
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author Veerasamy, Piriya Latha
Ab Aziz, Zakry Fitri
Wong, Sing King
Kasim, Susilawati
Masnindah, Malahubban
author_facet Veerasamy, Piriya Latha
Ab Aziz, Zakry Fitri
Wong, Sing King
Kasim, Susilawati
Masnindah, Malahubban
author_sort Veerasamy, Piriya Latha
collection UPM
description Indole-3-acetic acid (IAA) phytohormone plays an essential role in forming and initiating main, lateral, and adventitious roots in vegetative propagation. Plants are receiving IAA naturally from a diverse group of soil-plant associated rhizobacteria. However, IAA synthesis by rhizobacteria is influenced by abiotic growth condition. Three indigenous Bacillus isolates were subject to in vitro assay for the effects of abiotic factors (temperature, salinity and pH) on growth and IAA production. All isolates grew well between 25 - 40°C, and only B. megaterium UPMLH3 was capable of synthesising IAA (21.18 μg/ml) at 40°C. All three bacterial growth under saline stress were slightly dropped over control (0% NaCl), but still producing IAA up to 1% NaCl condition. B. cereus UPMLH24 revealed high resistance to salinity up to 5% NaCl. Optimum growth of all three Bacillus spp. was at pH 7. B. cereus UPMLH1 and UPMLH24 discovered higher IAA production in slightly alkaline condition (pH 8). Each rhizobacterium shows different physiology trait against each abiotic factor. However, the multiple tolerance ability of PGPR against abiotic factors is an indication that its ability to survive under harsh soil and plant environments while delivering benefits to the plant. Thus, B. cereusUPMLH1, B. megaterium UPMLH3 and B. cereus UPMLH24 might serve as potential biofertiliser, enhancing the growth performance of test plants at various environmental conditions.
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spelling upm.eprints-1132842024-11-22T07:01:02Z http://psasir.upm.edu.my/id/eprint/113284/ Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors Veerasamy, Piriya Latha Ab Aziz, Zakry Fitri Wong, Sing King Kasim, Susilawati Masnindah, Malahubban Indole-3-acetic acid (IAA) phytohormone plays an essential role in forming and initiating main, lateral, and adventitious roots in vegetative propagation. Plants are receiving IAA naturally from a diverse group of soil-plant associated rhizobacteria. However, IAA synthesis by rhizobacteria is influenced by abiotic growth condition. Three indigenous Bacillus isolates were subject to in vitro assay for the effects of abiotic factors (temperature, salinity and pH) on growth and IAA production. All isolates grew well between 25 - 40°C, and only B. megaterium UPMLH3 was capable of synthesising IAA (21.18 μg/ml) at 40°C. All three bacterial growth under saline stress were slightly dropped over control (0% NaCl), but still producing IAA up to 1% NaCl condition. B. cereus UPMLH24 revealed high resistance to salinity up to 5% NaCl. Optimum growth of all three Bacillus spp. was at pH 7. B. cereus UPMLH1 and UPMLH24 discovered higher IAA production in slightly alkaline condition (pH 8). Each rhizobacterium shows different physiology trait against each abiotic factor. However, the multiple tolerance ability of PGPR against abiotic factors is an indication that its ability to survive under harsh soil and plant environments while delivering benefits to the plant. Thus, B. cereusUPMLH1, B. megaterium UPMLH3 and B. cereus UPMLH24 might serve as potential biofertiliser, enhancing the growth performance of test plants at various environmental conditions. 2021-07-15 Article PeerReviewed Veerasamy, Piriya Latha and Ab Aziz, Zakry Fitri and Wong, Sing King and Kasim, Susilawati and Masnindah, Malahubban (2021) Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors. Journal of Phytology, 13. pp. 85-90. ISSN 20756240 https://updatepublishing.com/journal/index.php/jp/article/view/6918 Rhizobacteria Agriculture - Plant culture Agricultural - Research 10.25081/jp.2021.v13.6918
spellingShingle Rhizobacteria
Agriculture - Plant culture
Agricultural - Research
Veerasamy, Piriya Latha
Ab Aziz, Zakry Fitri
Wong, Sing King
Kasim, Susilawati
Masnindah, Malahubban
Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors
title Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors
title_full Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors
title_fullStr Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors
title_full_unstemmed Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors
title_short Indole-3-acetic acid production by rhizobacteria Bacillus spp. to various abiotic stress factors
title_sort indole 3 acetic acid production by rhizobacteria bacillus spp to various abiotic stress factors
topic Rhizobacteria
Agriculture - Plant culture
Agricultural - Research
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