Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)

Salinity is a major abiotic factor in soils that severely affects plant growth and continuously reduces the cultivated area. Under saline conditions, sodium is the most important cation, which is very harmful to plants. The potassium and sodium cations compete for their uptake in plants, primarily t...

Full description

Saved in:

Bibliographic Details
Main Author:	Ashfaq, Muhammad
Format:	Thesis
Language:	English
Published:	2022
Subjects:	QH1-278.5 Natural history (General)
Online Access:	http://eprints.usm.my/60050/1/24%20Pages%20from%20MUHAMMAD%20ASHFAQ.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-usm-ep.60050
record_format	uketd_dc
spelling	my-usm-ep.600502024-03-05T02:01:21Z Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1) 2022-01 Ashfaq, Muhammad QH1-278.5 Natural history (General) Salinity is a major abiotic factor in soils that severely affects plant growth and continuously reduces the cultivated area. Under saline conditions, sodium is the most important cation, which is very harmful to plants. The potassium and sodium cations compete for their uptake in plants, primarily through High-Affinity Potassium Transporters and Nonselective Cation Channels. Microorganisms play a vital role in solubilizing fixed potassium and making it available to plants. In the present study, forty-two potassium solubilizing rhizobacteria were isolated from paddy fields in the coastal area of Kuala Muda, Malaysia. Thirteen strains from the isolated rhizobacteria were positive for phosphorus solubilization, Indole Acetic Acid (IAA), siderophores, ammonia, Exopolysaccharides (EPS) production, nitrogen fixation, and 1-aminocyclopropane-1-carboxylate (ACC) deaminase. These thirteen strains grew successfully on nutrient agar amended with NaCl up to 8%; however, the growth was reduced at a higher salinity level. Five potassium solubilizing bacteria (KSB) (L1/4, L3/3, L3/4, L4/12, and L5/1) were selected for further studies based on the highest potassium solubilization (19.16, 18.33, 17.83, 17.25, and 17.75 μg/ml), respectively under 0, 3, 5 and 7% NaCl stress. These strains were identified as Acinetobacter pittii (L1/4), Acinetobacter pittii (L3/3), Rhizobium pusense (L3/4), Cupriavidus oxalaticus (L4/12) and Ochrobactrum ciceri (L5/1). 2022-01 Thesis http://eprints.usm.my/60050/ http://eprints.usm.my/60050/1/24%20Pages%20from%20MUHAMMAD%20ASHFAQ.pdf application/pdf en public phd doctoral Perpustakaan Hamzah Sendut Pusat Pengajian Sains Kajihayat
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QH1-278.5 Natural history (General)
spellingShingle	QH1-278.5 Natural history (General) Ashfaq, Muhammad Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)
description	Salinity is a major abiotic factor in soils that severely affects plant growth and continuously reduces the cultivated area. Under saline conditions, sodium is the most important cation, which is very harmful to plants. The potassium and sodium cations compete for their uptake in plants, primarily through High-Affinity Potassium Transporters and Nonselective Cation Channels. Microorganisms play a vital role in solubilizing fixed potassium and making it available to plants. In the present study, forty-two potassium solubilizing rhizobacteria were isolated from paddy fields in the coastal area of Kuala Muda, Malaysia. Thirteen strains from the isolated rhizobacteria were positive for phosphorus solubilization, Indole Acetic Acid (IAA), siderophores, ammonia, Exopolysaccharides (EPS) production, nitrogen fixation, and 1-aminocyclopropane-1-carboxylate (ACC) deaminase. These thirteen strains grew successfully on nutrient agar amended with NaCl up to 8%; however, the growth was reduced at a higher salinity level. Five potassium solubilizing bacteria (KSB) (L1/4, L3/3, L3/4, L4/12, and L5/1) were selected for further studies based on the highest potassium solubilization (19.16, 18.33, 17.83, 17.25, and 17.75 μg/ml), respectively under 0, 3, 5 and 7% NaCl stress. These strains were identified as Acinetobacter pittii (L1/4), Acinetobacter pittii (L3/3), Rhizobium pusense (L3/4), Cupriavidus oxalaticus (L4/12) and Ochrobactrum ciceri (L5/1).
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Ashfaq, Muhammad
author_facet	Ashfaq, Muhammad
author_sort	Ashfaq, Muhammad
title	Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)
title_short	Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)
title_full	Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)
title_fullStr	Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)
title_full_unstemmed	Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)
title_sort	potassium solubilization by indigenous rhizobacteria isolated from saline soil and their impact on early growth and macronutrient concentrations in paddy crop (oryza sativa l. var. mria 1)
granting_institution	Perpustakaan Hamzah Sendut
granting_department	Pusat Pengajian Sains Kajihayat
publishDate	2022
url	http://eprints.usm.my/60050/1/24%20Pages%20from%20MUHAMMAD%20ASHFAQ.pdf
_version_	1794024083153747968

Potassium Solubilization By Indigenous Rhizobacteria Isolated From Saline Soil And Their Impact On Early Growth And Macronutrient Concentrations In Paddy Crop (Oryza Sativa L. Var. MRIA 1)

Similar Items