Abstract
Alligatorweed (Alternanthera philoxeroidesG.) has become a serious weed in different crops in China. A fungal pathogen was found in Chongqing and Sichuan Provinces and was identified as a species in the Fusarium genus. The fungus produced macroconidia and chlamydospores abundantly on potato sucrose agar (PSA) plates. The bestconidial production and germination and colonygrowth of Fusarium sp. were at 23–31°C and pH 6.7–7.0. Light period and flooding did not affect fungal growth and conidium formation. The herbicides, glyphosate and paraquat, inhibited the fungal development in vitro. The fungus did not affect seed germination and seedling growth of paddy rice, wheat, maize, oilseed rape and broad bean inlaboratory or greenhouse trials. Inoculum density and wetness duration influenced the efficiency of Fusarium sp. to control alligatorweed; a concentration of 1.0 × 105 spores−1 ml and 12 h of high humidity duration after inoculation produced goodinfections on the weed at 23°C in the laboratory. When the fungus was applied to alligatorweed grown in greenhouse and in the field, good biocontrol efficiency was obtained: the plants started to wilt after four to five (greenhouse) or six days (field), and were killed 9–10 (greenhouse) or 13–14 (field) days after spraying the fungal inoculum. This was similar to the control efficiency resulting from glyphosate treatment. Therefore, this Fusarium sp. appeared to be a good candidatefor further studies and a promising biocontrol agent to manage alligatorweed in some terrestrial and aquatic crops.
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References
Aneja, K.R. and B. Srinivas, 1992. Fungal pathogens of aquatic weeds of Hayana. Journal of Mycopathogologial Research 30(2): 139–152.
Barreto, R.W. and A.N.L. Torres, 1999. Nimbya alternantherae and Cercospora alternantherae: two new records of fungal pathogens on Alternanthera philoxeroides in Brazil. Australian Plant Pathology 28(2): 103–107.
Coulson, J.R., 1977. Biological control of alligatorweed, 1959–1972: a review and evolution. USDA Bulletin, No 1547.
Diao, Z.X., 1983. The Common Weeds in Paddy Fields in China. Chongqing City Press. pp. 10–14.
Ding, J.Q., 1995. Biological control of weeds in crop fields. Chinese Journal of Biocontrol 11(3): 129–133.
Fang, Z.D. (ed.), 1979. Techniques of Plant Disease Investigation. Agriculture Press, Beijing, China.
Franagan, C.J., 1998. Alligatorweed (Alternanthera philoxeroides). Agnote Darwin No. 469.
Gao, Z.Y. and J.E. Yu, 1992. Biological control of Cuscuta spp. with Lubao #1 (a product formulated from Collectrichum sp. Chinese Journal of Biocontrol 8(4): 173–175.
Gunasekera, L., R.C.H Shepherd and R.G. Richardson, 1999. Alligatorweed, an aquatic weed present in Australian backyards. Proceedings of Aquatic Weed Workshop held at Keith Turnbull Research Institute, Australia. Plant Protection Quarterly 14(2): 77–78.
Harding S.A., et al., 2000. Genstat for Windows (5th Edition) Introduction. VSN International Ltd.,Wilkinson House, Oxford, UK.
Julien, M.H., 1980. Control of aquatic Alternanthera philoxeroides in Australia: another success for Agasicles hygrophila. In: E.S. Del Fosse (ed.), Proceedings of the 5th International Symposium on Biological Control of Weeds. Commonwealth Scientific and Industrial Research Organization, Australia. pp. 585–588.
Julien, M.H. and R.R. Chan, 1992. Biological control of alligator weed: unsuccessful attempts to control terrestrial growth using the flea beetle Disonycha argentinensis (Col., Chrysomelidae). Entomophaga 37(2): 215–221.
Krake, K., R.C.H. Shepherd and R.G. Richardson, 1999. Emerging aquatic weeds. Proceedings of AquaticWeedWorkshop held at Keith Turnbull Research Institute, Australia. Plant Protection Quarterly 14(2): 79.
Madhusoodanan, P.V. and K.G.A. Kumar, 1993. Alternanthera philoxeroides Griseb. — a fast spreading weed in Kerala, South India. Journal of Economic and Taxonomic Botany 17(3): 651–654.
Steward, C.A., R.B. Chapman, R.M. Emberson, P. Syrett and C.M.A. Frampton, 1999. The effect of temperature on the development and survival of Agasicles hygrophila, a biological agent for alligatorweed (A. philoxeroides). New Zealand Journal of Zoology 26(1): 11–20.
Sushilkumar, V., M. Bhan, 1996. Emerging problems of alligatorweed (Alternanthera philoxeroides (Marius) Grisebach in ponds and lowland area at Jabalper, India. Weed News 3(1–2): 67–69.
Tan W.Z., 1994a. Yield losses of different crops caused by alligatorweed (Alternanthera philoxeroides). Chinese Journal of Weed Sciences 8(1): 28–32.
Tan, W.Z., 1994b. Horizontal and vertical distributions of alligatorweed (Alternanthera philoxeroides) in China. Chinese Journal of Weed Sciences 9(2): 30–34.
Tan, W.Z., 1993. A species of Colletotrichum attacking alligatorweed (Alternanthera philoxeroides). In: Proceedings of Annual Symposium of the Chinese Society for Mycology. Beijing, China. pp. 87–89.
Tan, W.Z. and C.Y. Gu, 1993. Biological characteristics of Colletotrichum sp. from Alternanthera philoxeroides. Journal of Yunnan Agricultural University 15(3): 249–251.
Wang, R., 1990. Biological control of weeds in China: a status report. In: Proceedings of the 8th International Symposium on Biological Control of Weeds. Rome, Italy. Istituto Sperimentale per la Patologia Vegetale, Ministero dell'Agricoltura e delle Foreste. pp. 689–693.
Xing, L.J., 1995. The present status and perspectives of weed biocontrol with microbial organisms. Acta Mycologia Sinica 14(2): 153–157.
Zhang, T.Y., 1985. A strain of Colletotrichum gloeosporioides on Cuscuta sp. Acta Mycologia Sinica 4(4): 234–239.
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Tan, W., Li, Q. & Qing, L. Biological control of alligatorweed (Alternanthera philoxeroides) with a Fusarium sp.. BioControl 47, 463–479 (2002). https://doi.org/10.1023/A:1015606224100
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DOI: https://doi.org/10.1023/A:1015606224100