Individual-Based Approach to Modeling Hyphal Growth of a Biocontrol Fungus in Soil

Phytopathology - Tập 96 Số 10 - Trang 1108-1115 - 2006
Guy R. Knudsen, James P. Stack, S. O. Schuhmann, K. A. Orr, C. LaPaglia

Tóm tắt

Fungi in soil perform beneficial roles that include biological control of soilborne plant pathogens. However, relatively little predictive information is available about the growth and activity of fungal hyphae in soil habitats. A stochastic computer simulation model (“Fungmod”) was developed to predict hyphal growth of the biocontrol fungus Trichoderma harzianum ThzID1 in soil. The model simulates a fungal colony as a population of spatially referenced hyphal segments, and is individual-based, in that records of spatial location and branching hierarchy are maintained for individual hyphal nodes. In this way, the entire spatial structure of the fungal colony (hyphal network) can be explicitly reconstructed at any point in time. Also, the soil habitat is modeled as a population of spatially referenced 1-mm3soil cells, allowing for the simulation of a spatially heterogeneous environment. Initial hyphal growth parameters were derived from previously published results, and the model was tested against new data derived from image analysis of hyphal biomass accumulation in soil. The ability to predict fungal growth in natural habitats will help to improve the predictability of successful myco-parasitic events in biological control systems.

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Tài liệu tham khảo

10.1094/Phyto-69-896

10.1094/Phyto-77-182

Ayers, W. A., and Adams, P. B. 1980. Mycoparasitism and its application to biological control of plant diseases. Pages 91-103 in: Biological Control in Crop Protection. G. C. Papavizas, ed. BARC Symposium No. 5. Allanhead Osmun, Totowa, NJ.

10.1002/bit.260350810

10.1128/AEM.66.2.810-815.2000

10.1094/PHYTO.2001.91.3.301

10.1016/j.biocontrol.2004.10.001

10.1007/BF01322464

10.1094/Phyto-75-729

10.1094/Phyto-81-994

Chet, I., Hadar, Y., Elad, Y., Katan, J., and Henis, Y. 1979. Biological control of soil-borne plant pathogens by Trichoderma harzianum. Pages 585-591 in: Soil-Borne Plant Pathogens. B. Schippers and W. Gams, eds. Academic Press, New York.

10.1038/216246a0

10.1111/j.1365-2672.2004.02310.x

10.1016/0038-0717(73)90039-4

10.1016/0038-0717(88)90070-3

10.1016/0022-5193(82)90146-1

Edelstein L., 1983, J. Gen. Microbiol., 129, 1873

10.1094/Phyto-75-774

10.1002/bit.260280314

10.2307/1310870

10.1016/S0007-1536(80)80078-7

Knudsen, G. R. 1991. Models for the survival of bacteria applied to the foliage of crop plants. Pages 191-216 in: Modeling the Environmental Fate of Microorganisms. C. J. Hurst, ed. ASM Press, Washington, DC.

10.1094/Phyto-80-724

10.1094/PD-75-0466

Knudsen G. R., 1991, Appl. Environ. Microbiol., 57, 2864, 10.1128/aem.57.10.2864-2867.1991

10.1016/0304-3800(87)90090-1

10.1006/bcon.1999.0713

Knudsen, G. R., and Spurr, H. W., Jr. 1988. Management of bacterial populations for foliar disease biocontrol. Pages 83-92 in: Biocontrol of Plant Diseases. K. G. Mukerji, ed. CRC Press, Boca Raton, FL.

Knudsen, G. R., and Stack, J. P. 1991. Modeling growth and dispersal of fungi in natural environments. Pages 625-645 in: Handbook of Applied Mycology, Vol. I: Soil and Plants. D. K. Arora, B. Rai, K. G. Mukerji, and G. R. Knudsen, eds. Marcel Dekker, Inc., New York.

10.1093/imammb/18.2.213

10.1002/(SICI)1097-0290(19970120)53:2<139::AID-BIT3>3.0.CO;2-P

10.1002/bit.260470513

10.1111/j.1365-3059.1987.tb02260.x

10.1002/bit.260410706

10.1094/PHYTO.2004.94.12.1383

10.1016/0038-0717(87)90108-8

Prosser, J. I. 1991. Mathematical modeling of vegetative growth of filamentous fungi. Pages 591-623 in: Handbook of Applied Mycology, Vol. I: Soil and Plants. D. K. Arora, B. Rai, K. G. Mukerji, and G. R. Knudsen, eds. Marcel Dekker, Inc., New York.

Ripley, B. D. 1981. Spatial Statistics. Wiley-Interscience, Inc., Hoboken, NJ.

10.1016/0261-2194(83)90060-1

10.1093/ee/21.6.1271

Snedecor, G. W., and Cochran, W. G. 1967. Statistical Methods. The Iowa State University Press, Ames.

Spurr, H. W., Jr., and Knudsen, G. R. 1985. Biological control of leaf diseases with bacteria. Pages 45-62 in: Biological Control on the Phylloplane. C. E. Windels and S. E. Lindow, eds. The American Phytopathological Society, St. Paul, MN.

10.1139/m87-109

Stack, J. P., Kenerley, C. M., and Pettit, R. E. 1988. Application of biological control agents. Pages 43-54 in: Biocontrol of Plant Diseases. K. G. Mukerji, ed. CRS Press, Boca Raton, FL.

Stack J. P., 1987, Phytopathology, 77, 1771

10.1094/Phyto-69-904

Trinci, A. P. J. 1984. Regulation of hyphal branching and hyphal orientation. Pages 23-52 in: The Ecology and Physiology of Fungal Mycelium. D. H. Jennings and A. D. M. Rayner, eds. Cambridge University Press, Cambridge.

van Veen J. A., 1979, Appl. Environ. Microbiol., 37, 686, 10.1128/aem.37.4.686-692.1979

10.1111/j.1438-8677.1988.tb01576.x

10.1002/bit.260390109

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Phytopathology

Tập 96 Số 10

1108-1115

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