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| राष्ट्रीय सहारा (27 दिसंबर, 2014) |
Thursday, 25 February 2016
Wednesday, 24 February 2016
Thursday, 17 December 2015
STUDIES ON CERTAIN ASPECTS OF ROOT SURFACE FUNGI. I
The present study deals with the succession of fungi on the root regions of living Pennisetum typhoides (Burm f.) Stapf. et Hubb. from July to November of 1970 and 1971. A clear succession of fungi from nonrhizosphere - rhizosphere - cortical portion of rhizoplane - steler portion of rhizosplane has been observed. The fungal population and number of species in the crown, middle and distal regions of roots in above mentioned four regions also exhibited a definite pattern. The presence and amount of amino acids and sugars in root exudates (July to October) and root extracts (July to November) have been studied. The amount of cellulose, hemicellulose and lignin components, the pH and moisture content of nonrhizosphere soils from corresponding vertical zones have been determined and the effect of root exudates of different age on 15 rhizosphere fungi has been studied. (See PDF at Slideshare.net)
Cite this as- Kanaujia R.S. (1981): Studies on certain aspects of root surface fungi. I. Fungi on living roots of Pennisetum typhoides (Burm f.) Stapf et Hubb. ACTA MYCOLOGICA. XVII (1-2): 5-25.
Friday, 23 October 2015
Studies on certain aspects of root surface fungi II. Succession of fungi on decomposing Pennisetum typhoides (Burm. f.) Stapf et Hubb.
Sixty seven fungal species from the nonrhizosphere (NR), rhizosphere (RS) and cortical (RPC)and steler (RPS) parts of rhizosphere of crown (RC), middle (RM) and distal (RD) regions of decomposing roots of Pennisetum typhoides (Burm.f.)Stapf. et Hubb. were isolated during December to June, 1970-72. The number of fungal species gradually decrease from NR-RPS in horizontal and RC-RD in vertical regions. The fungal population was always higher in RS of different depths than in corresponding NR region. The amino acids and sugar component of the roots showed a direct correlation with the fungal population. The amount of cellulose, hemicellulose and lignin components of roots gradually decreased from December to June. Root-washing collected from RC, Rm and RD regions exhibited the presence of vanillic acid and 3-4 dihydroxy benzoic acid during March and April. It also exerted an adverse effect on the 10 rhizosphere fungi during this period. pH and moisture contents showed a poor correlation with the fungal population except during summer months. Phycomycetes with species of Deuteromycetes obtained in the first phase was followed by Deuteromycetes along with few Ascomycetes in the second phase.In the last Deuteromycetes with some sterile mycelia were isolated. Aspergilli were the most numerous throughout the investigation. (Full paper at Slideshare.net)
Cited this as: Kanaujia R.S. (1981): Studies on certain aspects of root surface fungi II. Succession of fungi on decomposing Pennisetum typhoides (Burm. f.) Stapf et Hubb. ACTA MYCOLOGICA. 17 (1&2): 27-40.
Studies on certain aspects of root surface fungi. III. Effect of Harvesting
The effect of harvesting of above ground part on the succession of fungi on crown, middle and distal regions of decomposing roots of Pennisetum typhoides (Burm f.) Stapf et Hubb. was investigated for a period of six months (January to June 1971). The number of fungal species was generally lower in harvested plants than in standing plants whereas the fungal population exhibited reverse trend. The amino acids, sugars, cellulose, hemicellulose and lignin components of the root in different vertical regions were assessed and a correlation was established between the above factors and fungal succession in the two sets of plants. It was also noticed that roots in all the depths decomposed earlier than the set where aerial parts left intact and no phytotoxin were detected in the harvested set against standing one where vanilic acid and 3-4 dihydroxybenzoic acids were chromatogrammed during March to April. The pH and moisture content exhibited with the fungal succession. Deuteromycetes along with few Phycomycetes in the beginning, Deuteromycetes with few Ascomycetes in the second phase and Deuteromycetes along with Mycelia sterilia in the third phase were isolated. (Full paper at Slideshare.net)
Cited this as- Kanaujia R.S. (1982): Studies on certain aspects of root surface fungi. III. Effect of Harvesting. ACTA MYCOLOGICA. XVIII (1): 45-60.
Survey of Fungi from Archaeological Digs at Faizabad
A study of the fungi from the soil of 8.5 m deep archaeological digs- differentiated into 18 strata- at Katra in Ayodhya of Faizabad district (U.P.) has been made. A total of 23 different fungal species were isolated from 18 different strata of the digs. The upper stratum (0.0-0.23 m) was found to harbour a greater number of fungi, which decrease in quality and quantity towards the lower profiles up to 4.5-5.35 m and finally to nil. The greater no of fungi in upper strata may actually be attributed to organic matter content governing their distribution, and the decrease in fungi below this layer may account for the decrease in organic matter content. The members of phycomycetes and ascomycetes were confined to the upper few strata which corresponded to the availability of nutrients while deuteromycetes were diversified in their distribution which exhibits their nutritional adaptability, capacity to withstand even nutritionally deficient substrate and tolerance to desiccation.. (Full paper at Slideshare.net)
Cite this as- Kanaujia R.S. and Singh C.S. (1977): Survey of Fungi from Archaeological Digs at Faizabad. FERTILIZER TECHNOLOGY. 14(1&2): 146-148.
Parasitic Fungi of Faizabad, Alternaria
Thirty four species of Alternaria have been recorded on different plants at Faizabad. Several plants were parasited by the same species, on the other hand more than one species have been observed on the same host. Amongst total species, Alternaria tenuis was harboured by 46 plants, A. tenuissima, A. brassicae, A. cucumerina and A. solani had their lesser number whereas 23 species were restricted to only one host separately. (Full paper at Slideshare.net)
Cite this as- Singh C.S., Kanaujia R.S. and Chaudhary R.L(1975):Parasitic Fungi of Faizabad, Alternaria. The Botanique. VI(4):191-194.
Sunday, 18 October 2015
Annonated list of Fungi of Faizabad. V.
Twenty five fungal species were isolated from 27 different hosts including two new fungi, Botryodiplodia pandani (Lev.) Petrak and Syd. and Cytospora thithymalina Pass. and Belter, earlier unknown from India. There are 25 new host records for the country. The specimen have deposited in the CMI, England. (Full paper at slideshare.net)
Cited this as- Kanaujia R.S. and Kishore R. (1981): Annonated list of Fungi of Faizabad. V. Indian Journal of Mycology and Plant Pathology. 11(2): 292-293.
Annonated list of fungi from Faizabad (U.P.), India. I
Thirty fungi were isolated from different substrates/host. Of 75 different substrates, 18 were new host records and 47 were found to be new substrate fungal association earlier not reported from India. Out of 30 fungi,03 fungi, viz., Alternaria cheiranthi, Duportella tristicula and Phomopsis cassiae were found to be new to India. The specimens have been deposited at Commonwealth Mycological Institute, Kew, England and a part of collection has been deposited in the Herbarium of Department of Botany, K.S.S. P.G. College, Faizabad. (PDF at Slideshare.net)
Cite this as- Kanaujia R.S. and R. Kishore (1978): Annonated list of fungi from Faizabad (U.P.), India. I. Journal of Mycology and Plant Pathology. 8(2): 188-194.
Addition to the Fungi of India, Part 8- Occurrence of Diplodia euphorbiae Braunaud in Faizabad
Diplodia euphorbiae Braunaud has been reported on the dead stems of Euphorbia teraculii for the first time in India from Faizabad. The specimen has been deposited in the Herbarium of the Commonwealth Mycologiacal Institute, England, as Herb.No. IMI 210642. A part of the collection has also been maintained in the Mycological Herbarium, Botany Department, K.S.S. P.G. College, Faizabad, as Herb. No. RSK-326-S.
Cite this as- Addition to the Fungi of India, Part 8- Occurrence of Diplodia euphorbiae Braunaud in Faizabad. FERTILIZER TECHNOLOGY. 15(1):61.
Addition to the Fungi of India Part 7- Occurrence of Haplosporella beaumontiana and Haplosporella ipomoeae in Faizabad
Two species of Haplosporella, viz., Haplosporella beaumontiana Ahmed and Haplosporella ipomoeae Ahmed, found to occur on the dead stem of Pithecolobium dulce Benth. and Ipomoea fistulosa L. respectively are reported for the first time in India. The specimen have been deposited in the Herb. Commonwealth Mycological Institute, England as Herb. no. IMI 209354 and IMI 209350 respectively. A part of collection has also been deposited in the Mycological Herbarium, Botany Department, K.S.S. P.G. College, Faizabad as Herb. no. RSK-195-S and RSK-191-S respectively. (PDF at Slideshare.net)
Cited this as- Kanaujia R.S. (1978):Addition to the Fungi of India Part 7- Occurrence of Haplosporella beaumontiana and Haplosporella ipomoeae in Faizabad. FERTILIZER TECHNOLOGY. 15(1):60.
Studies on phyllosphere fungi. I. Effect of foliar application of plant extracts
The effect of different concentrations of leaf extracts of Calotropis procera and Datura metal on phyllosphere mycoflora of Pennisetum typhoides has been investigated. The preparation of 4,8 and 16% leaf extracts of aforesaid plants and their spraying on the foliage of P. typhoides was performed as described by Mishra and Kanaujia (1972). The spore germination of certain phyllosphere fungi, viz., Aspergillus flavipes Bainier & Sortory, A. fumigatus Fres., Cladosporim herbarum (Pers.) Link., Curvularia lunata (Walker) Boedijn, Fusarium sp., Mucor hiemalis Wehmer, Myrothecium roridum Tode, Penicillium sp. and Trichoderma viride Corda was tested separately in the different concentrations (4, 8, 16, 20 and 50%)of the same plant extracts in the cavity slides by hanging drop method. The extract above 4% concentration in both cases proved inhibitory for certain phyllosphere fungi. The inhibitory property of leaf extracts, however, differed with regard to certain fungal species. The leaf extract of D. metal proved to be more effective than that of C. procera. The spore germination of certain fungal species was considerably lowered in the extract of the both plant species.(PDF at Slideshare.net)
Cite this as- Kanaujia R.S. and Mishra R.R. (1978): Studies on phyllosphere fungi. I. Effect of foliar application of plant extracts. Bangladesh Journal of Botany. 7(2):13-19.
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