Home About us MoEF Contact us Sitemap Tamil Website  
About Envis
Whats New
Research on Microbes
Microbiology Experts
Online Submission
Access Statistics

Site Visitors

blog tracking

Abstracts of Recent Publications
Abstracts 1 2  

001- Ghulam Shabir, Muhammad Afzal, Farooq Anwar,Razia Tahseen, Zafar Mahmood Khalid. Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box 577, Faisalabad, Pakistan. Biodegradation of kerosene in soil by a mixed bacterial culture under different nutrient conditions. International Biodeterioration & Biodegradation, 61, 2008, 161–166.

The present investigation dealt with the biodegradation of kerosene in soil using a mixed bacterial culture under two different treatment setups, treatment 1 (T1) having low nutrient concentration as compared to treatment 2 (T2). Each treatment contained 4% (w/w) kerosene in soil as a sole carbon source. After 6 weeks of incubation, T1 and T2 exhibited 27±3% and 65±7% kerosene degradation, respectively. The highest bacterial growth was observed in T2 with a significant reduction in nutrient content of soil over 2–3 weeks of incubation. Overall, 46±12% and 54±24% of nitrogen, 36±3% and 43±3% of phosphorus and 24±2% and 35±2% of potassium content of the soil were depleted under T1 and T2, respectively. The present work has defined nutrient requirements for kerosene oil degradation and has opened avenues for its remediation from contaminated soil.

Keywords:Kerosene; Biodegradation; Bacteria; Soil; Nutrients.


002-Saskia CM Van Wees, Sjoerd Van der Ent and Corne´ MJ Pieterse. Plant-Microbe Interactions, Institute of Environmental Biology, Faculty of Science, Utrecht University, P.O. Box 800.56, 3508 TB Utrecht. Plant immune responses triggered by beneficial microbes. Current Opinion in Plant Biology, 11, 2008, 443–448.

Beneficial soil-borne microorganisms, such as plant growth promoting rhizobacteria and mycorrhizal fungi, can improve plant performance by inducing systemic defense responses that confer broad-spectrum resistance to plant pathogens and even insect herbivores. Different beneficial microbe-associated molecular patterns (MAMPs) are recognized by the plant, which results in a mild, but effective activation of the plant immune responses in systemic tissues. Evidence is accumulating that systemic resistance induced by different beneficials is regulated by similar jasmonate-dependent and ethylene-dependent signaling pathways and is associated with priming for enhanced defense.

Keywords:beneficial microbes, soil-borne microorganisms, rhizobacteria, mycorrhizal fungi.


ENVIS CENTRE Newsletter Vol.6, No 3 September 2008 Back 
Copyright © 2005 ENVIS Centre ! All rights reserved
This site is optimized for 1024 x 768 screen resolution