Plant Pathology Journal1812-53871812-5425Asian Network for Scientific Information10.3923/ppj.2011.146.153SeleimM.A.A. SaeadF.A. Abd-El-MoneemK.M.H. Abo-ELyousrK.A.M. 42011104Seven isolates of Ralstonia solanacearum were isolated from naturally wilted roots of tomato plants grown in Assiut governorate. All isolates were pathogenic to tomato plants and produced typical symptoms of wilt. Isolate No. 5 exhibited the highest virulence followed by isolate No. 4. Pseudomonas fluorescens, P. putida, Bacillus subtilis and Enterobacter aerogenes were isolated from tomato rhizosphere and tested against R. solanacearum in vitro and in vivo. Results showed that all PGPR strains except E. aerogenes, increased seed germination up to 15% over untreated control. Under greenhouse conditions, P. fluorescens exhibited the highest disease reduction of tomato bacterial wilt disease followed by P. putida and then B. subtilis while E. aerogenes showed the lowest disease reduction percentage. Also tomato plants treated with all PGPR isolates significantly stimulated plant growth promotion under greenhouse conditions. In field trails, addition of P. fluorescens, P. putida and B. subtilis at concentration of 108 cfu mL-1 showed that Pseudomonas fluorescens caused the highest disease reduction percentage of tomato bacterial wilt disease while P. putida exhibited the lowest disease reduction percentage.]]>Abo-Elyousr, K.A.M. and M.R. Asran,200942573578Abdul-Baki, A.A. and J.D. Anderson,197313630633Anith, K.N., M.T. Momol, J.W. Kloepper, J.J. Marios, S.M. Olson and J.B. Jones,200488669673Beauchamp, C.J., 1993711927Chin-A-Woeng, T.F.C., G.V. Bloemberg, I.H.M. Mulders, L.C. Dekkers and J.J. Ben,2000Pseudomonas chlororaphis PCL1391 is essential for biocontrol of tomato foot and root rot.]]>1313401345Dalal, N.R., S.R. Dalal, V. Dalal, G. Golliwar and R.I. Khobragade,1999Solanum melongena L.) varieties.]]>9223226Dong, C., X. Zeng and Q. Liu,1999Ralstonia solanacearum.]]>2014El-Ariqi, S.N.S., M. El-Moflehi, K. El-Arbara, A. El-Kobati and A. El-Shaari,2005Withania somnifera and Aloe vera aginst Ralstonia solanacearum in potato.]]>239599FAO,20092009Gomez, K.A. and A.A. Gomez,19842nd Edn.,Pages: 680Pages: 680Halos, P.M. and R.A. Zorrilla,1979Pseudomonas solanacearum.]]>62309315Hayward, A.C.,1964Pseudomonas solanacearum.]]>27265277Higa, T.,19991999pp: 1928Horita, M. and K. Tsuchiya,2001Ralstonia solanacearum.]]>91399407Jacobson, C.B., J.J. Pasternak and B.R. Glick,1994Pseudomonas putida GR12-2.]]>4010191025Jetiyanon, K. and J.W. Kloepper,200224285291Ji, P., M.T. Momol, S.M. Olson, P.M. Pradhanang and J.B. Jones,200589497500Jia, S., X. Qu, L. Feng, T. Tang and Y. Tang et al.,19991999Kang, Y., G. Mao, C. Lu and L. He,1995Pseudomonas solanacearum.]]>22287288King, E.O., M.K. Ward and D.E. Raney,195444301307Klement, Z., K. Rudolph and D.C. Sands,1990Pages: 568Pages: 568Kloepper, J.W., D.J. Hume, F.M. Scher, C. Singleton and B. Tipping et al.,1988724246Kloepper, J.W. and C.J. Beauchamp,19923812191232Kloepper, J.W., C.M. Ryn and S. Zhang,2004Bacillus spp.]]>9412591266Krieg, N.R. and J.G. Holt,1984Vol. 1,Lazarovits, G. and J. Nowak,199732188192Lelliot, R.A. and D.E. Stead,19871987pp: 2-216pp: 2-216Lim, H. and S. Kim,1997Pseudomonas fluorescens GL20.]]>71320Liu, L., J.W. Kloepper and S. Tuzun,199585843847Loper, J.E. and M.N. Schroth,198676386389Nandakumar, R., S. Babu, R. Viswanathan, J. Sheela, T. Raguchander and R. Samiyappan,200146493510Priou, S., M. Marquez and L. Gutarra,2005Ralstonia solanacearum) using antagonistic Pseudomonas putida strains.]]>2005Ramamoorthy, V., T. Raguchander and R. Samiyappan,2002108429441Ramanathan, A., V. Shanmugam, T. Raguchander and R. Samiyappan,2002Pseudomonas fluorescens.]]>10313318Schaad, N.W.,19802nd Ed.pp 60-80pp 60-80Schaad, W.,20013rd Edn.pages: 373pages: 373Da Silveira, E.B., R.L.R. de Mariano, S.J. Michereff and M. Menezes,1995Bacillus spp. against Pseudomonas solanacearum and effect on tomato seedling growth.]]>20605612Van Loon, L.C., P.A.H.M. Bakker and C.M.J. Pieterse,199836453483Williamson, L., K. Nakaho, B. Hudelson and C. Allen,2002Ralstonia solanacearum race 3, biovar 2 strains isolated from geranium are pathogenic to potato.]]>86987991Winstead, N.N. and A. Kelman,1952Pseudomonas soslanacearum.]]>42628634Yabuuchi, E., Y. Kosako, I. Yano, H. Hotta and Y. Nishiuchi,1995Burkholderia and an Alcaligenes species to Ralstonia Gen. Nov.: Proposal of Ralstonia pickettii (Ralston, Palleroni and Doudoroff 1973) Comb. Nov., Ralstonia solanacearum (Smith 1896) Comb. Nov. and Ralstonia eutropha (Davis 1969) Comb. Nov.]]>39897904Guo, J.H., H.Y. Qi, Y.H. Guo, H.L. Ge, L.Y Gong, L.X. Zhang and P.H. Sun,2004296672