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Arun Kumar, K.
- Phylogenetic Identification of DNase Secreting Soil Bacteria Antagonistic to Fungus Aspergillus
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1 School of Agriculture, Lovely Professional University, Jalandhar GT Road, Phagwara-144 411, Punjab, IN
1 School of Agriculture, Lovely Professional University, Jalandhar GT Road, Phagwara-144 411, Punjab, IN
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Nature Environment and Pollution Technology, Vol 15, No 1 (2016), Pagination: 19-26Abstract
Contamination of major cash crops by mycotoxigenic fungi in developing countries, including India, is becoming one of the major areas of concern. Continual use of synthetic pesticides to fulfil the increasing demand for consumption of major legumes has negative impact on human health and has major environmental risks associated with it. Microbes living in vicinity to these mycotoxin producing fungi have been found to be a promising substitute against harmful pesticides. The main objective of the present work was to isolate the bacterial strain which has a promising potential to act as an antagonist against the fungal pathogen Aspergillus which is considered to secrete Aflatoxin, the most potent mycotoxin. Large number of bacteria were isolated randomly from the rhizosphere of groundnut crop sown in Jamia Hamdard (New Delhi, India) randomly by serial dilution method, and screened for their antagonistic effect against fungus Aspergillus. Initial screening results show that, 14 of the isolates exhibit promising antagonism on dual culture media. Optimization of growth conditions was carried out at different pH, temperature and salt (NaCl) concentration. In vitro antagonism assay comprising of mycelial inhibition assay on to PDA using the scale of 1-4 (where 1 indicates bacterial colony completely overgrown by fungi, 2 indicates overgrown but bacterial colony visible, 3 indicates growth of fungus to the edge of the bacterial colony and 4 indicates inhibition zone) and inhibition of mycelial growth as observed by a significant drop on mycelial dry weight by co-inoculation of bacterial culture with fungal spores in M1 media. One of the bacterial isolates MAK603 exhibiting the maximum antagonistic effect was selected after optimization for further studies. The mechanism of action of MAK603 was studied in vitro for the production of hydrolytic enzymes. Phylogenetic analysis using 16 S rDNA amplification was carried out to establish its identity.Keywords
Aspergillus, Soil Bacteria, Dnase Secreting, Contaminated Crops, Antifungal Agent.Full Text
- Grafted Papayas:A Boon for Dioecious Papaya Industry
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Authors
Affiliations
1 School of Agriculture, Lovely Professional University, Phagwara 144 411, IN
2 Horticulture College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 631 003, IN
3 Department of Fruit Crops, Tamil Nadu Agricultural University, Coimbatore 631 003, IN
1 School of Agriculture, Lovely Professional University, Phagwara 144 411, IN
2 Horticulture College and Research Institute, Tamil Nadu Agricultural University, Coimbatore 631 003, IN
3 Department of Fruit Crops, Tamil Nadu Agricultural University, Coimbatore 631 003, IN
Source
Current Science, Vol 111, No 8 (2016), Pagination: 1287-1288Abstract
Papaya (Carica papaya L.), regarded as the 'Wonder fruit of tropics and sub tropics', belongs to the family Caricaceae. The importance of papaya to agriculture and the world's economy is demonstrated by its wide distribution, substantial production in the tropical countries, besides its high nutritive value.Full Text
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- Senthilkumar, S., PG dissertation submitted to TNAU, Coimbatore, India, 2011.
- Fuzzy based Priority Scheduler for WiMAX with Improved QoS constraints
Abstract Views :119 |
PDF Views:3
Authors
Affiliations
1 Department of ECE, Einstein College of Engineering, Tirunelveli, IN
2 Department of ECE , Sree Sastha Institute of Engineering, Chennai, IN
1 Department of ECE, Einstein College of Engineering, Tirunelveli, IN
2 Department of ECE , Sree Sastha Institute of Engineering, Chennai, IN
Source
International Journal of Advanced Networking and Applications, Vol 4, No 3 (2012), Pagination: 1616-1623Abstract
Wireless Interoperability for Microwave Access (WiMAX) is one of the most familiar broadband wireless access technologies that support multimedia transmission. IEEE802.16 Medium Access Control (MAC) covers a large area for bandwidth allocation and Quality of Service (QoS) mechanisms for various types of applications. Nevertheless, the standard lacks a MAC scheduling algorithm that has a multi-dimensional Technological objective of satisfying QoS requirements of the users, maximizing channel utilization while ensuring fairness among users. So we are proposing a novel Priority based Scheduling Algorithm using Fuzzy logic that addresses these aspects. The initial results show that maximum channel utilization is achieved with a negligible increment in processing time while keeping the priority intact.Keywords
WiMAX, Fuzzy, Priority, Scheduling Algorithms.Full Text