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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| Format: | Article |
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2021
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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. |
| first_indexed | 2024-12-09T02:25:43Z |
| format | Article |
| id | upm.eprints-113284 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-12-09T02:25:43Z |
| publishDate | 2021 |
| record_format | dspace |
| 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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