1. Department of BiotechnologyAcharya Nagarjuna UniversityGuntur 522 510Andhra PradeshIndia
2. Department of Botany and MicrobiologyAcharya Nagarjuna UniversityGuntur 522 510Andhra PradeshIndia
3. Centre for MicrobiologySchool of Life SciencesPondicherry UniversityPondicherry 605 014India