Paper Search
Main Menu
Homepage
Submission
Papers In Press
Search
Information for Contributors
Introducing the Journal
Board of Journal of Science
Contact address
 
Select by Volumes


 
 
 
 
 
 
 
SCImago Journal & Country Rank
 
0.39
2018CiteScore
 
25th percentile
Powered by  Scopus
Home > Plant Growth Promoting Properties of Salt Tolerant Bacteria and Their Application as Microbial Inoculant for Seed Germination
 
Plant Growth Promoting Properties of Salt Tolerant Bacteria and Their Application as Microbial Inoculant for Seed Germination
Paper Type
Contributed Paper
Title
Plant Growth Promoting Properties of Salt Tolerant Bacteria and Their Application as Microbial Inoculant for Seed Germination
Author
Nuntavun Riddech*, Dinh Thi Thai Ha, Do Thi Nhut and Thanaporn Phibunwatthanawong
Email
nunrid@kku.ac.th
Abstract:
 A total of 29 bacterial strains were isolated from salt-affected paddy fields in Khon Kaen province, Thailand. These isolated bacterial strains were evaluated for qualitative parameters such as nitrogen fixation on Ashby’s agar, phosphorus (P) and potassium (K) solubilization on NBRIP and Aleksandrov media, respectively under sodium chloride concentrations at electrical conductivity (EC) from 0 to 16 dS m-1. The resulted showed that most of the isolates were nitrogen fixers and positively promoted the plant growth at saline levels EC 2-8 S m1. The ability of P and K solubilization, in addition to the production of Indole-3-acetic acid (IAA) varied among bacterial strains and saline concentrations. The highest production of IAA (46.30 μg mL-1) was reported by isolate 18 at EC 8 dS m-1. The potential antagonism of 26 isolates to plant pathogenic fungi was tested according to dual culture assay. Isolate 1 was the most effective; being able to inhibit more than 50% to Sclerotium rolfsii and 18.93% to Fusarium oxysporum. Strains 1, 22, and 29 demonstrated multiple traits of plant growth promoting and were used to test corn (Zea mays) seed germination. It was found that they could activate salt tolerance and germination of corn seeds as efficiently as commercial biofertilizer -effective microorganisms (EM) at salinity level 8 dS m-1; while previous research reported that corn could not grow well at salinity level higher than 4 dS m-1. Thus, the selected isolates in this study have the potential concerned be utilized as a bio-remedy for improving plant growth in saline soil.  
Start & End Page
1069 - 1083
Received Date
2019-05-20
Accepted Date
2019-08-30
Full Text
Download
Correspondence:
Author Name
Nuntavun Riddech* - Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
Keyword:
Keyword
salt tolerant bacteria, plant growth promoting, biofertilizer, corn seed germination,
Volume
Vol.46 No.6 (November 2019)
 




Besucherzähler-Counter.com