Plant Pathology Journal1812-53871812-5425Asian Network for Scientific Information10.3923/ppj.2009.120.126Rhodiola rosea in Alberta, Canada]]>HwangS.F. AhmedH.U. Ampong-NyarkoK. StrelkovS.E. HowardR.J. TurnbullG.D. 3200983Rhodiola (Rhodiola rosea) is a plant with adaptogenic properties and is suitable for cultivation in Alberta, Canada. Disease surveys indicated the occurrence of root rots in rhodiola plantations in the Province. A total of 74 fungal isolates were associated with discoloration and rotting in the crown and root regions of the plants. Among these, 15 isolates were identified as Fusarium sp., three as Pythium sp. and eight as Rhizoctonia sp. This is the first report of root rot in rhodiola in Alberta, Canada. These soil-borne pathogens are the potential threat to the quality and quantity of rhodiola production. Experiments were conducted to determine the effect of vesicular-arbuscular mycorrhizal fungi and these soil pathogens on rhodiola growth and development under greenhouse conditions. Overall results indicated that Fusarium, Pythium and Rhizoctonia sp. are all capable of reducing rhodiola biomass. However, biomass was significantly higher when vesicular-arbuscular mycorrhizal fungi were applied in conjunction with these pathogens or in non-inoculated controls. This suggests that vesicular-arbuscular mycorrhizal fungi could be used as a management tool for the control of seedling root rot diseases of rhodiola.]]>Abbott, L.K. and A.D. Robson,198233389408Adam, G.C.,1988Rhizoctonia solani) a Species of Wide Host Range.]]>1988pp: 535-552pp: 535-552Ampong-Nyarko, K.,2004115Brown, R.P., P.L. Gerbarg and Z. Ramazanov,2002Rhodiola rosea: A phytomedicinal overview.]]>564052Fernando, W.G.D. and R.G. Linderman,1997Glomus intraradices) colonization on the development of root and stem rot (Phytophthora vignae) of cowpea.]]>253947Galambosi, B.,2005Rhodiola rosea L. raw material.]]>2005pp: 223236Haas, J.H. and J. Krikun,1985100613621Hwang, S.F.,198872448452Hwang, S.F., K.F. Chang and P. Chakravarty,199276239243Hwang, S.F., B.D. Gossen, K.F. Chang, G.D. Turnbull and R.J. Howard,200181509517Hwang, S., K. Ampong-Nyarko, G.D. Turnbull, R.J. Howard and D. Cole,2007Rhodiola rosea in Alberta, Canada.]]>2007Leslie, J.F. and B.A. Summerell,2006Fusarium Laboratory Manual.]]>Nash, S.M. and W.C. Snyder,1962Fusarium in field soils.]]>52567572Yao, M., R. Tweddell and H. Desilets,2002Rhizoctonia solani.]]>12235242Chaudhary, V., R. Kapoorand and A.K. Bhatnagar,2008Artemisiinin annua L.]]>40174181Chang, K.F., S.F. Hwang, B.D. Gossen, R.L. Conner and D.L. McLaren et al.,2006Fusarium root rot of field pea.]]>2006pp: 12Nelson, P.E., T.A. Toussoun and W.F.O. Marasas,1983Fusarium Species an Illustrated Manual For Identification.]]>pp: 128-139pp: 128-139Pal, K.P. and B.M. Gardener, 20062006SAS Institute Inc.,2005Zhou, Q., K.F. Chang, S.F. Hwang, S.E. Strelkov, B.D. Gossen and Y. Chen, 2009Rhizoctonia solani isolates from lupin in Alberta Canada. ]]>2009