Online Submission



Register | Forgot password?

Recent Issues

Uploaded: 28/02/2024 Uploaded: 03/01/2024
Uploaded: 18/07/2023 Uploaded: 23/05/2023

Latest News
Monday, February 05, 2024
Upcoming conference 2023 Details
Thursday, March 30, 2017

ISI Impact Factor 1.1

Details
Paper Details

PJB-2021-433

Plant growth promoting rhizobacteria induced modulation of physiological responses in rice under salt and drought stresses

Farman Ali, Asghari Bano, Tamoor Ul Hassan, Munazza Nazir and Rizwan Taj Khan
DOI:10.30848/PJB2023-2(23)


Abstract

Effects of Pseudomonas sp. on physiology of Oryza sativa (L.) var. KS-282 were evaluated under induced drought stress and salinity stress conditions. For seed inoculation, sterilized seeds were immersed in Pseudomonas broth culture for 2 to 4 hours, whereas control seeds were soaked in distilled water for the same time period before being sowed in autoclaved, sand-soil mixture. Drought stress was induced by withholding water supply for 10 days, while salinity stress was induced by irrigating with 200 mM NaCl. Plants were harvested at the vegetative stage. Both the stresses significantly decreased the relative water content of leaves, root area, total soluble leaf proteins, chlorophyll content of leaves, osmotic potential of leaves whereaas electrolyte leakage, proline content of leaves and superoxide dismutase activity were significantly increased. The decrease in moisture content of the rhizosphere soil was much less marked in salt-stressed plants. The PGPR ameliorated the adverse effects of drought and salt stress on all parameters but at different magnitude. Generally, PGPR were more effective under drought stress. The percentage decrease in soil moisture content and relative water content (RWC) were higher under drought stress. The drought stress induced a decrease in protein production, and an increase in proline was similar under both stresses however, the PGPR induced production of protein was 50% lower in saline condition but was equally effective for proline production. The antioxidant enzyme superoxide dismutase (SOD) activity was higher under drought stress than that under salt stress, and PGPR further augmented it. It is inferred from the present finding that the effect of drought is more pronounced in rice and that the ameliorative effectiveness of PGPR used as bioinoculant differs under different stresses for a plant grown under similar condition

To Cite this article: Ali, F., A. Bano, T.U. Hassan, M. Nazir and R.T. Khan. 2023. Plant growth promoting rhizobacteria induced modulation of physiological responses in rice under salt and drought stresses. Pak. J. Bot., 55(2): DOI: http://dx.doi.org/10.30848/PJB2023-2(23)  
Download

About Journal
--------------------------------------
Author's Guideline
--------------------------------------
Submit Online
--------------------------------------
In Press Articles
--------------------------------------
Status of Manuscript
--------------------------------------
Current Impact Factor 1.2
--------------------------------------
5 Years Impact Factor 1.1
Category Quartile:Q3
Indexing

PJB is indexed in following international databases: View all

Thomson Reuters ISI Web of Knowledge


SCOPUS

https://www.scopus.com/sourceid/19983?origin=sbrowse


AGRIS


ASCI-Database


CABI


International Scientific Indexing (ISI)


Cambridge Scientific Abstract


Chemical Abstract Services


E-Journals


ISC (Islamic World Science Citation Center)


Scientific Indexing Services


SCIMAGO


Index Copernicus (IC)


ProQuest


DOAJ


Google Scholar


Contact Us
Pakistan Journal of Botany, Botanical Garden, University of Karachi, Karachi, Pakistan

pakjbot@pakbs.org | Facebook
Hit Counter: 1103422, Today's: 1425, Yesterday's: 1993, Country Wise Counter

Copyright © 2017-18 - All Rights Reserved - www.pakbs.org