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Gangadevi, V.
- Endophytic Fungal Diversity from Young, Mature and Senescent Leaves of Ocimum basilicum L. with Special Reference to Taxol Production
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PDF Views:143
Authors
V. Gangadevi
1,
J. Muthumary
1
Affiliations
1 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, IN
1 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 1, No 1 (2007), Pagination: 1-12Abstract
Endophytic fungi inhabiting foliage of medicinally important plants are diverse and abundant, yet little is known of their temporal and spatial variation. Seasonal variation in endophyte infections on young, mature and senescent leaves of a medicinal plant Ocimum basilicum collected from different sites were studied. Interestingly, one of the isolates, Phyllosticta sp.6, was found to produce taxol in artificial culture media. This study provides the first report on diversity of endophytic fungi of medicinal plants from Chennai city, Southern India. The endophytic fungus is expected to be a potential source of natural bioactive agent.Keywords
Ocimum basilicum, Fungal Endophytes, Diversity, Taxol, Anticancer DrugFull Text
References
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- Light and Transmission Electron Microscopic Studies on Conidiomata Developmental Morphology in Pestaloiopsis rhododendri
Abstract Views :351 |
PDF Views:77
Authors
Affiliations
1 Centre for Advanced Studies in Botany, Univesity of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, IN
1 Centre for Advanced Studies in Botany, Univesity of Madras, Guindy Campus, Chennai: 600 025, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 1, No 2 (2007), Pagination: 1-6Abstract
Investigations on the development of conidiomata in Pestalotiopsis rhododendri (Saccardo) Guba were done by using light and Transmission electron microscopes. Light microscopic studies showed the presence of non-ostiolate, pycnidial conidiomata in culture. Acervular conidiomata are produced normally by species of Pestalotiopsis on leaves. The other interesting observation during the study was the ultrastructure of the conidial wall in the coloured cells as well as the basal and apical hyaline cells with the appendages. Pestalotiopsis rhododendri resembles P. uvicola in the development of conidiomata. The first time report of the various stages of development of conidiomata in Pestalotiopsis rhododendri will be useful in fungal systematic studies.Keywords
Acervular Conidiomata, Coelomycetes, Conidium Ontogeny, Fungi, Pycnidial Conidiomata, UltrastructureFull Text
References
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- Effect of NaCl on Biochemical Changes and Endophytic Fungal Assemblages in the Leaves of a Mangrove, Ceropsis roxiphorguna Arn
Abstract Views :489 |
PDF Views:86
Authors
Affiliations
1 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai – 600 025, IN
2 Department of Botany, Annamalai University, Chidambaram – 608 002, IN
1 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai – 600 025, IN
2 Department of Botany, Annamalai University, Chidambaram – 608 002, IN
Source
Indian Journal of Science and Technology, Vol 1, No 4 (2008), Pagination: 1-7Abstract
One of the universal protective responses of plants to any type of stress is the accumulation of low-molecular organic substances such as amino acids, sugars and proteins. In this study, the effect of salinity on leaf pigments, proteins, free amino acids, proline, polyphenols, sugars and starch content was investigated. Status on endophytic fungal assemblages in the salt treated leaves of a mangrove, C. roxburghiana was studied under hydroponics pot culture. The photosynthetic pigments, sugars and protein concentrations of leaves were reduced by salinity and that the effect was aggravated by the long duration of salinity. Total contents of both chlorophyll and carotenoids decreased significantly by the treatment of NaCl. Total amino acid pool decreased by salinity, but the proline content increased only marginally. In the control, proline level did not change during the entire period of the study. The significant increase of accumulation of proline in leaves is implicated in osmotic adjustment to salinity. The endophytic fungal assemblage was also investigated. Among the 7 species, isolated Phyllosticta sp. was found frequently more when compared to other fungi. The results show that the endophytic fungi like Pestalotiopsis sp. and Phyllosicta sp. can be sustained and regenerated at low salinity condition in halophytes.Keywords
Ceriops roxburghiana, Salinity, Biochemical Changes, Endophytic FungiFull Text
References
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- Screening Endophytic Fungi Isolated from a Medicinal Plant, Acalypha Indica L. for Antibacterial Activity
Abstract Views :1067 |
PDF Views:175
Authors
Affiliations
1 Department of Plant Biology & Plant Biotechnology, S.D.N.B. Vaishnav College for Women, Chrompet, Chennai – 600 044, IN
1 Department of Plant Biology & Plant Biotechnology, S.D.N.B. Vaishnav College for Women, Chrompet, Chennai – 600 044, IN
Source
Indian Journal of Science and Technology, Vol 1, No 5 (2008), Pagination: 1-6Abstract
Among the Acalypha species, Acalypha indica L. is predominantly one of the herbs in waste lands throughout the plains of India. The leaves, ischolar_main, stem and flowers are used in traditional medicine. In the present investigation, the antibacterial activity of A. indica by preliminary antibiotic assay screening was carried out. Ethylacetate, hexane and methanol extracts from the leaves, stem and ischolar_mains of A. indica were investigated for their antibacterial activity against three strains of human pathogenic bacteria viz., Bacillus subtilis, Staphylococcus aureus and Klebsiella pneumoniae. Ethylacetate extracts of leaves and ischolar_mains appeared to be quite promising due to their capacity to inhibit the growth of all the three selected bacterial species. Hexane extracts of leaves, stem and ischolar_main showed moderate activity. These promising results in relation with antimicrobial activity in vitro open the way for complementary investigation in order to identify and purify the active compounds. In vitro antimicrobial screening methods could provide the needed preliminary observations necessary to select among crude extracts, those with potentially useful properties for further chemical and pharmacological investigations.Keywords
Medicinal Plant, Acalypha indica, Endophytic Fungi, Antimicrobial Activity, Pathogenic BacteriaFull Text
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- The Antibacterial Activity of Acalypha indica L.
Abstract Views :633 |
PDF Views:82
Authors
Affiliations
1 Department of Plant Biology & Plant Biotechnology, S.D.N.B. Vaishnav College for Women, Chrompet, Chennai–600 044, IN
2 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai–600 025, IN
1 Department of Plant Biology & Plant Biotechnology, S.D.N.B. Vaishnav College for Women, Chrompet, Chennai–600 044, IN
2 Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai–600 025, IN
Source
Indian Journal of Science and Technology, Vol 1, No 6 (2008), Pagination: 1-5Abstract
The antibacterial activity of Acalypha indica was investigated against three strains of human pathogenic bacteria viz., Bacillus subtilis, Staphylococcus aureus and Klebsiella pneumoniae using ethylacetate, hexane and methanol extracts of leaves, stem and ischolar_mains of Acalypha indica. The ethylacetate extracts of leaves and ischolar_mains inhibited the growth of all the three selected bacterial species. The in vitro assay may open way for complementary future investigations in identifying potentially useful properties of chemical and pharmacological importance.Keywords
Acalypha indica, Antimicrobial Activity, Human Pathogenic Bacteria, Medicinal PlantFull Text
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