2 1 83
Home About us MoEF Contact us Sitemap Tamil Website  
About Envis
Whats New
Microorganisms
Research on Microbes
Database
Bibliography
Publications
Library
E-Resources
Microbiology Experts
Events
Online Submission
Access Statistics

Site Visitors

blog tracking


 
International Biodeterioration & Biodegradation
Vol. 113, 2016, Pages: 155–160

Bioaugmentation of microbes to restore coastal wetland plants to protect land from coastal erosion

Regina Bledsoe, Raj Boopathy

Department of Biological Sciences, Nicholls State University, Thibodaux, LA 70310, USA.

Abstract

Microbes with beneficial effects to plant growth and health have been dubbed plant growth-promoting rhizobacteria (PGPR). PGPR has been extensively studied in crop plants; however, our study investigates the effects of PGPR on the wetland grassSpartina alternifloraSalterniflora is the dominant vegetation in coastal marshes and is often used in wetland restoration projects. Greenhouse raised Salterniflora were subjected to three treatments: One of a consortia of microbes with freshwater, one of a consortia of microbes with 10 parts per thousand (ppt) saline water, and one with a pure culture and freshwater. Plant growth and soil nitrogen and phosphorus content were measured over 60 days and all plants were sacrificed at the end of the experiment to quantify biomass. Of the three treatments, the treatment receiving the consortia plus salt water had the most growth (41.1 ± 4.4 cm) and greatest biomass (108.03 g) followed by the pure culture treatment with freshwater (34.9 ± 3.2 cm, 96.25 g), the consortia treatment with freshwater (39.7 ± 5.0 cm, 89.04 g), and lastly the control treatment (7.7 ± 1.5 cm, 51.85 g). All treatments were significantly different from the control but not significantly different between each other. In consortia plus 10% saline water treatment, mean stem growth was almost six times greater, total biomass was doubled, and the number of additional stems was three times greater compared to the control. This study shows a positive relationship between microbial activity, soil nutrient cycling of nitrogen and phosphorus, and plant growth in greenhouse grown Salterniflora inoculated with PGPR.

Keywords: Biorestoration; Bioaugmentation; Spartina alterniflora; Wetland; Coastal erosion; Salinity; Nitrogen; Phosphorous.

 
Copyright © 2005 ENVIS Centre ! All rights reserved
This site is optimized for 1024 x 768 screen resolution