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Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.

Exogenous indole-3acetic acid (IAA) plays an important role in formation and initiation of main, lateral and adventitious roots in vegetative propagation. The hormone is produced by certain soil-plant associated rhizobacteria. However, IAA synthesis by rhizobacteria is influenced by abiotic growth c...

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Main Authors: Veerasamy, Piriya Latha, Wong, Sing King, Abdul Aziz, Zakry Fitri, Kasim, Susilawati
Format: Conference or Workshop Item
Language:English
English
Published: 2012
Online Access:http://psasir.upm.edu.my/id/eprint/31609/1/31609.pdf
http://psasir.upm.edu.my/id/eprint/31609/
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spelling my.upm.eprints.316092014-07-07T06:09:45Z http://psasir.upm.edu.my/id/eprint/31609/ Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp. Veerasamy, Piriya Latha Wong, Sing King Abdul Aziz, Zakry Fitri Kasim, Susilawati Exogenous indole-3acetic acid (IAA) plays an important role in formation and initiation of main, lateral and adventitious roots in vegetative propagation. The hormone is produced by certain 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 (light temperature, salinity and pH) on IAA production. Bacillus cereus UPMLH 1 and UPMLH 24 were able to produce higher level of IAA in dark than under 12 hours light. Bacillus megaterium UPMLH3 produced optimal level of IAA in both 12 hours light period and dark condition. All isolates grew well between 25-40C, however only B. megaterium was capable to synthesis IAA (21.15pg/ml) at 40C. B. cereus UPMLH1 and UPMLH24 revealed higher IAA production in slightly alkaline condition (pH8). B. cereus UPMLH24 has high tolerance to salinity up to 5% NaCI. B. cereus UPMLH1. B. megaterium UPMLH3 and B. cereus UPMLH24 might serve as potential biofertilizer which could enhance growth performance of test plants. 2012 Conference or Workshop Item NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/31609/1/31609.pdf Veerasamy, Piriya Latha and Wong, Sing King and Abdul Aziz, Zakry Fitri and Kasim, Susilawati (2012) Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp. In: Malaysia International Biological Symposium 2012: Sustainable Management of Bioresources, 11-12 Jul. 2012, Selangor, Malaysia. (pp. 438-440). English
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
English
description Exogenous indole-3acetic acid (IAA) plays an important role in formation and initiation of main, lateral and adventitious roots in vegetative propagation. The hormone is produced by certain 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 (light temperature, salinity and pH) on IAA production. Bacillus cereus UPMLH 1 and UPMLH 24 were able to produce higher level of IAA in dark than under 12 hours light. Bacillus megaterium UPMLH3 produced optimal level of IAA in both 12 hours light period and dark condition. All isolates grew well between 25-40C, however only B. megaterium was capable to synthesis IAA (21.15pg/ml) at 40C. B. cereus UPMLH1 and UPMLH24 revealed higher IAA production in slightly alkaline condition (pH8). B. cereus UPMLH24 has high tolerance to salinity up to 5% NaCI. B. cereus UPMLH1. B. megaterium UPMLH3 and B. cereus UPMLH24 might serve as potential biofertilizer which could enhance growth performance of test plants.
format Conference or Workshop Item
author Veerasamy, Piriya Latha
Wong, Sing King
Abdul Aziz, Zakry Fitri
Kasim, Susilawati
spellingShingle Veerasamy, Piriya Latha
Wong, Sing King
Abdul Aziz, Zakry Fitri
Kasim, Susilawati
Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.
author_facet Veerasamy, Piriya Latha
Wong, Sing King
Abdul Aziz, Zakry Fitri
Kasim, Susilawati
author_sort Veerasamy, Piriya Latha
title Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.
title_short Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.
title_full Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.
title_fullStr Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.
title_full_unstemmed Influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of Bacillus sp.
title_sort influence of abiotic factors on indole-3-acetic acid production by indigenous diazotrophic isolates of bacillus sp.
publishDate 2012
url http://psasir.upm.edu.my/id/eprint/31609/1/31609.pdf
http://psasir.upm.edu.my/id/eprint/31609/
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score 13.211869

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