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Abstract
Leaf leachates of two cultivars of potato i.e. Kufri Chandramukhi (KCM) and Kufri Jyoti (KJ ) contain nine amino acids. Total sugar content of KCM and KJ leachates varied between 0.10 and 0.37 µg per sq. cm and 0.02 to 0.23 µg per sq. cm. respectively. The sugars exuded more by KCM. Total phenol content of KCM and KJ leachates varied between 1.00 to 2.0 µg per sq. cm and 1.05 to 3.16 µg per sq. cm respectively. The percentage germination of P. infestans sporangia in KCM and KJ cultivars was more in mature leaf leachates as compared to young leaves, moreover it was less in KJ cultivar as compared to KCM. The germ tube length of P. infestans zoospores in leaf leachates was inhibited in both the cultivars except in mature leaf leachate of 94 days old Ku fri Chandramukhi.
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References
- Block, R.J. and Durham, and E.L. and Zweig, G., 1958. A Manual of Paper Chromatography and Paper Electrophoresis. Acadmic Press, New York, 710 pp.
- Bansal, B. K., Navneet and Mehrotra, R.S., 1988. Phyllosphere mycoflora of wheat in relation to leaf leachates and its resistence to Helminthosporium blight. Indian Phytopath, 41: 398-405.
- Bahadur, P. and Sinha, S.,1970. Studies on spores germination of Uromyces cicerisarietini influence of leaf exudates of gram. Indian Phytopath., 23: 644-649.
- Chet². , Ziberstein, Y. and Henis, Y., 1973. Chemotaxis of Pseudomonas lachrymans to plant extracts and to water droplets collected from leaf surfaces of resistant and susceptible plants. Physiological Plant Pathology, 3: 473-479. DOI: https://doi.org/10.1016/0048-4059(73)90057-X
- Collins, M. A. and Hayes, A.J., 1976. The seasonal incidence of microbes on the surface of first year needles of Norway spruce. Trans. Br. Mycol. Soc., 66: 457-461. DOI: https://doi.org/10.1016/S0007-1536(76)80216-1
- Child, J. J. and Fothergill, P. G., 1967. The amino acid content of potato plant varieties and their resistance to attack by Phytophthora species. J. Sci. Fd. Agric., 18: 3-7. DOI: https://doi.org/10.1002/jsfa.2740180102
- Farkas, G. L. and Kiraly, Z., 1962. Role of phenolic compounds in the physiology of Plants disease and disease resistance. Phytopath., 44:105-150. DOI: https://doi.org/10.1111/j.1439-0434.1962.tb02005.x
- French, A. M., 1953. Physiologic differences between two physiologic races of Phytopthora infestans. Phytopathology, 43:513-516
- Godfrey,B.E. S., 1974., Phylloplane mycoflora ofbraken,Pteridium aquilinum.Trans. Br.Mycol.Soc.62: 305-311. Link, K. P. and Walker, J.C., 1933. The isolation of catechol from pigmented onion scales and its significance in relation to disease resistance in onions. J. Boil. Chem., 100: 379-383. DOI: https://doi.org/10.1016/S0021-9258(18)75955-3
- Morris, D.L., 1948. Quantitative determination of carbohydrates with Dreywood’s anthrone reagent. Science, 254-255. DOI: https://doi.org/10.1126/science.107.2775.254
- Mishra, R. R. and Tewari, R. P., 1978. Studies on pyllosphere fungi: Germination behaviour of certain fungi in leaf extract and exudates of wheat and barley. Acta Bot. Indica, 6: 21-30.
- Purnell, T. J., 1971. Effects of pre-inoculation washings of leaves with water on subsequent infections by Erisyphe cichoracearum. In Ecology of Leaf Surface Microorganisms (Preece, T. F. and Dickinson, C. H., Eds.). Academic Press, London, pp.269-275.
- Sadasivam, K. V., Rangaswami, G. and Prasad, N. N., 1976. Studies on pyllosphere microflora of tapioca (Manihot utilissima Pohl.). Zbl. Bakt . Abt.²² Bd.,131: 632-643. DOI: https://doi.org/10.1016/S0044-4057(76)80026-3
- Singh, P.N., Sindhu, I.R. and Gupta, K., 1986. Effect of leaf exudates and extract of spinach on some phylloplane fungi. Acta Bot. Indica., 14: 104-110.
- Shepherd, C.J. and Mandryk, M., 1963. Germination of conidia ofPeronospora tabacina. ²². Germination in vivo. Aust. J. Boil. Sci., 16: 77- 87. DOI: https://doi.org/10.1071/BI9630077
- Sharma, J.K. and Sinha, S., 1971. Effect of exudates of Sorgum varieties varying in susceptibility and maturity on the germination of conidia of Colletotrichum graminicola (Ces.) Wilson. In Ecology of Leaf Surface Microorganisms (Preece, T.F. and Dickinson, C.H., Eds.)., Academic Press, London, pp.597-601.
- Singh, S.A. and Gupta, P.K.S., 1983. Effect of leaf exudates and extracts on conidial germination of rice leaf scald fungus, Rhynchosporium oryzae. Indian J. Plant Pathol., 1:109-113.
- Schneider, R.W. and Sinclair, J.B., 1975. Inhibition of conidial germination and germ tube growth of Cercospora canescens by cow pea leaf diffusates. Phytopathology., 65:63-65. DOI: https://doi.org/10.1094/Phyto-65-63
- Vincent, J.M., 1947. Distortion offungal hyphae in the presence of certain inhibitors.Nature (London), 159: 850. Wang, S.C. and Pinckard, J.A., 1973. Spore germination of Diplodia gossypina in the presence of carbohydrates and phenolic compounds in relation to boll rot of cotton. Phytopathology, 63:1181-1185. DOI: https://doi.org/10.1094/Phyto-63-1181
References
Block, R.J. and Durham, and E.L. and Zweig, G., 1958. A Manual of Paper Chromatography and Paper Electrophoresis. Acadmic Press, New York, 710 pp.
Bansal, B. K., Navneet and Mehrotra, R.S., 1988. Phyllosphere mycoflora of wheat in relation to leaf leachates and its resistence to Helminthosporium blight. Indian Phytopath, 41: 398-405.
Bahadur, P. and Sinha, S.,1970. Studies on spores germination of Uromyces cicerisarietini influence of leaf exudates of gram. Indian Phytopath., 23: 644-649.
Chet². , Ziberstein, Y. and Henis, Y., 1973. Chemotaxis of Pseudomonas lachrymans to plant extracts and to water droplets collected from leaf surfaces of resistant and susceptible plants. Physiological Plant Pathology, 3: 473-479. DOI: https://doi.org/10.1016/0048-4059(73)90057-X
Collins, M. A. and Hayes, A.J., 1976. The seasonal incidence of microbes on the surface of first year needles of Norway spruce. Trans. Br. Mycol. Soc., 66: 457-461. DOI: https://doi.org/10.1016/S0007-1536(76)80216-1
Child, J. J. and Fothergill, P. G., 1967. The amino acid content of potato plant varieties and their resistance to attack by Phytophthora species. J. Sci. Fd. Agric., 18: 3-7. DOI: https://doi.org/10.1002/jsfa.2740180102
Farkas, G. L. and Kiraly, Z., 1962. Role of phenolic compounds in the physiology of Plants disease and disease resistance. Phytopath., 44:105-150. DOI: https://doi.org/10.1111/j.1439-0434.1962.tb02005.x
French, A. M., 1953. Physiologic differences between two physiologic races of Phytopthora infestans. Phytopathology, 43:513-516
Godfrey,B.E. S., 1974., Phylloplane mycoflora ofbraken,Pteridium aquilinum.Trans. Br.Mycol.Soc.62: 305-311. Link, K. P. and Walker, J.C., 1933. The isolation of catechol from pigmented onion scales and its significance in relation to disease resistance in onions. J. Boil. Chem., 100: 379-383. DOI: https://doi.org/10.1016/S0021-9258(18)75955-3
Morris, D.L., 1948. Quantitative determination of carbohydrates with Dreywood’s anthrone reagent. Science, 254-255. DOI: https://doi.org/10.1126/science.107.2775.254
Mishra, R. R. and Tewari, R. P., 1978. Studies on pyllosphere fungi: Germination behaviour of certain fungi in leaf extract and exudates of wheat and barley. Acta Bot. Indica, 6: 21-30.
Purnell, T. J., 1971. Effects of pre-inoculation washings of leaves with water on subsequent infections by Erisyphe cichoracearum. In Ecology of Leaf Surface Microorganisms (Preece, T. F. and Dickinson, C. H., Eds.). Academic Press, London, pp.269-275.
Sadasivam, K. V., Rangaswami, G. and Prasad, N. N., 1976. Studies on pyllosphere microflora of tapioca (Manihot utilissima Pohl.). Zbl. Bakt . Abt.²² Bd.,131: 632-643. DOI: https://doi.org/10.1016/S0044-4057(76)80026-3
Singh, P.N., Sindhu, I.R. and Gupta, K., 1986. Effect of leaf exudates and extract of spinach on some phylloplane fungi. Acta Bot. Indica., 14: 104-110.
Shepherd, C.J. and Mandryk, M., 1963. Germination of conidia ofPeronospora tabacina. ²². Germination in vivo. Aust. J. Boil. Sci., 16: 77- 87. DOI: https://doi.org/10.1071/BI9630077
Sharma, J.K. and Sinha, S., 1971. Effect of exudates of Sorgum varieties varying in susceptibility and maturity on the germination of conidia of Colletotrichum graminicola (Ces.) Wilson. In Ecology of Leaf Surface Microorganisms (Preece, T.F. and Dickinson, C.H., Eds.)., Academic Press, London, pp.597-601.
Singh, S.A. and Gupta, P.K.S., 1983. Effect of leaf exudates and extracts on conidial germination of rice leaf scald fungus, Rhynchosporium oryzae. Indian J. Plant Pathol., 1:109-113.
Schneider, R.W. and Sinclair, J.B., 1975. Inhibition of conidial germination and germ tube growth of Cercospora canescens by cow pea leaf diffusates. Phytopathology., 65:63-65. DOI: https://doi.org/10.1094/Phyto-65-63
Vincent, J.M., 1947. Distortion offungal hyphae in the presence of certain inhibitors.Nature (London), 159: 850. Wang, S.C. and Pinckard, J.A., 1973. Spore germination of Diplodia gossypina in the presence of carbohydrates and phenolic compounds in relation to boll rot of cotton. Phytopathology, 63:1181-1185. DOI: https://doi.org/10.1094/Phyto-63-1181