 Sotiris Tjamos
Associate Professor
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Personal Info
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PROFESSIONAL EXPERIENCE:
Associate Editor of BioControl, Published by Springer DEGREES:
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| Title | Credits | Undergrad/Postgrad | Compulsory/Elective |
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| Advanced Phytopathology (Diseases of vegetable and ornamental plants) | Undergraduate | Compulsory | |
| Principles and methods of plant disease managment | Undergraduate | Elective | |
| Postgraduate | |||
| Phytopathology | Undergraduate | Compulsory | |
| Postgraduate | Elective | ||
| Postgraduate | |||
| 5 | Undergraduate | Elective | |
| Undergraduate | Elective |
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Biological control of soilborne plant pathogens Soilborne pathogens cause widespread, heavy economic losses to a wide range of crops. Fusarium oxysporum and Verticillium dahliae are major soilborne fungi causing serious economic losses to farmers, as there are no chemical treatments to control them. Therefore, the use of biocontrol agents (BCAs) is an appealing control strategy for the conventional and organic farming. In this frame, a number of different bacterial and fungal isolates are tested against F. oxysporum and V. dahliae under greenhouse and field conditions. Along their suppressive activity, the mode of action of the most efficacious isolates is examined through bioassays, microbiological and elaborate molecular techniques V. dahliae & F. oxysporum - host plant molecular interaction The responses of Arabidopsis thaliana mutant plants impaired in known pathogen response pathways are used to explore the plant defence mechanisms deployed against V. dahliae and F. oxysporum. Analysis of the mutant responses have revealed enhanced resistance in etr1-1 [ethylene receptor mutant] plants. qPCR analysis showed that V. dahliae vascular colonisation was reduced in the etr1-1 plants compared to the wt. Furthermore, microarray experiments indicated that the defence response of etr1-1 plants against V. dahliae is dependent on a set of defence genes activated upon pathogen invasion Plant pathogens & Food safety Aspergillus carbonarius and A. niger are the main ochratoxicogenic producing fungi in the Mediterranean vineyards. The presence of both fungi has been also confirmed in the greek vineyards. Control strategies include the use of fungicides and biocontrol agents (yeasts). In a number of published studies, it was shown that the use of fungicides with cyprodinil+fludioxonil as active ingredients, at veraison reduces sour rot incidence and Aspergillus sp. on grapes along with ochratoxin A levels in must. Similarly, an Aureobasidium pullulans isolate showed to reduce significantly sour rot incidence and ochratoxin A levels in must Molecular identification of plant pathogens A number of different Phytophthora isolates from woody and ornamental trees have been characterized on a molecular basis |
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Poulaki, E.G., Tjamos, S.E. 2023. Bacillus species: factories of plant protective volatile organic compounds. Journal of Applied Microbiology, 134 (3): lxad037
Kalogeropoulou, E., Beris, D., Tjamos, S.E., Vloutoglou, I., Paplomatas, E.J. 2023. Arabidopsis β-amylase 3 affects cell wall architecture and resistance against Fusarium oxysporum. Physiological and Molecular Plant Pathology 124: 101945
Poulaki, E.G.,Triviza, M.F., Malai, M., Tjamos, S.E. 2022. A Case of Plant Vaccination: Enhancement of Plant Immunity against Verticillium dahliae by Necrotized Spores of the Pathogen. Plants 11: 1691 Kalogeropoulou, E., Aliferis, K.A., Tjamos, S.E., Vloutoglou, I., Paplomatas, E.J. 2022. Combined Transcriptomic and Metabolomic Analysis Reveals Insights into Resistance of Arabidopsis bam3 Mutant against the Phytopathogenic Fungus Fusarium oxysporum. Plants 11 (24): 3457 Ziazia, P., Poulaki, EG., Gkizi, D., Lozano, L., Serrano, M., Tjamos, SE. 2021. Feeding the Microbes: A Strategy to Control Verticillium Wilt. Agronomy 11 (10): 1946 Gkizi, D., González Gil, A., Pardal, A.J., Piquerez, SJM., Sergaki, C., Ntoukakis, V., Tjamos, S.E. 2021. The bacterial biocontrol agent Paenibacillus alvei K165 confers inherited resistance to Verticillium dahliae. Journal of Experimental Botany 72 (12): 4565-4576 Gkizi, D., Poulaki, E.G., Tjamos SE. 2021. Towards Biological Control of Aspergillus carbonarius and Botrytis cinerea in Grapevine Berries and Transcriptomic Changes of Genes Encoding Pathogenesis-Related (PR) Proteins. Plants 10 (5): 970 Gkikas, FI., Tako, A., Gkizi, D.,Lagogianni, C., Markakis, EA., Tjamos SE. 2021. Paenibacillus alvei K165 and Fusarium oxysporum F2: Potential Biocontrol Agents against Phaeomoniella chlamydospora in Grapevines. Plants 10 (2): 207 Aggeli,F., Ziogas, I., Gkizi, D., Fragkogeorgi, G.A., Tjamos, S.E. 2020. Novel biocontrol agents against Rhizoctonia solani and Sclerotinia sclerotiorum in lettuce. BioControl 65 (6): 763-773 Poulaki EG, Tsolakidou M-D, Gkizi D, Pantelides IS, Tjamos SE. 2020. The Ethylene Biosynthesis Genes ACS2 and ACS6 Modulate Disease Severity of Verticillium dahliae. Plants 9(7):907 Kolainis S., Koletti A., Lykogianni M., Karamanou D., Gkizi D., Tjamos S.E., Paraskeuopoulos A., Aliferis K.A. 2020. An integrated approach to improve plant protection against olive anthracnose caused by the Colletotrichum acutatum species complex. PLoS ONE 15(5): e0233916 Poulaki E.G., Gkizi D., Tjamos S.E. 2020. Potential of zeolite to control Sclerotinia sclerotiorum and Rhizoctonia solani in lettuce and the induction of defense related genes. Journal of Phytopathology 168:113–119 Fousia S., Tsafouros A., Roussos P.A., Tjamos S.E. 2018. Increased resistance to Verticillium dahliae in Arabidopsis plants defective in auxin signaling. Plant Pathology 67:1749-1757 Papastolopoulou C., Diakou G., Gkizi D., Dimitrakas V., Paplomatas E.J., Tjamos S.E. 2018. The pyruvate decarboxylase 1 (PDC1) gene: negative regulator of disease resistance for Fusarium oxysporum and Verticillium dahliae. European Journal of Plant Pathology 152: 61-69 Fatouros G., Gkizi D., Fragkogeorgi G., Paplomatas E.J., Tjamos S.E. 2017. Biological control of Pythium, Rhizoctonia and Sclerotinia in lettuce: the plant protective activity of the bacterium Paenibacillus alvei K165 is associated with the induction of systemic resistance. Plant Pathology 67: 418–425 Kefalogianni I., Gkizi D., Pappa E., Dulaj L., Tjamos S.E., Chatzipavlidis I. 2017. Combined use of biocontrol agents and zeolite as a management strategy against Fusarium and Verticillium wilt. BioControl 62: 139-150 Gkizi D., Lehmann S., L’Haridon F., Serrano M., Paplomatas E.J., Métraux J.P., Tjamos S.E. 2016. The innate immune signaling system as a regulator of disease resistance and ISR activity against Verticillium dahliae. Molecular Plant Microbe Interactions 29: 313-323 Fousia S., Paplomatas E.J., and Tjamos S.E. 2016. Bacillus subtilis QST 713 confers protection to tomato plants against Pseudomonas syringae pv tomato and induces plant defence-related genes. Journal of Phytopatholgy 164: 264-270 Markakis E.A., Tjamos S.E., Antoniou P.P., Paplomatas E.J., Tjamos E.C. 2016. Biological control of Verticillium wilt of olive by Paenibacillus alvei, strain K165. BioControl 61: 293-303 Lehmann S., Serrano M., L’Haridon F., Tjamos S.E., and Metraux J.P. 2015. Reactive oxygen species and plant resistance to fungal pathogens. Phytochemistry 112: 54-62 Gkizi D., Santos-Rufo A., Rodrıguez-Jurado D., Paplomatas E.J., and Tjamos S.E. 2015. The b-amylase genes: negative regulators of disease resistance for Verticillium dahliae. Plant Pathology 64: 1484-1490 Angelopoulou D.J., Naska E.J., Paplomatas E.J., and Tjamos S.E. 2014. Biological control agents (BCAs) of verticillium wilt: influence of application rates and delivery method on plant protection, triggering of host defence mechanisms and rhizosphere populations of BCAs. Plant Pathology 63: 1062–1069 Charalambous A., Tjamos S.E., Domazakis E., and Paplomatas E.J. 2013. Incorporation into the transplant soil plug of the plant protective agent Paenibacillus alvei strain K165 confers protection to melon against Fusarium wilt. BioControl 58: 685-692 Pantelides Ι.S., Tjamos S.E., Pappa S., Kargakis M., and Paplomatas E.J. 2013. The ethylene receptor ETR1 is required for Fusarium oxysporum pathogenicity. Plant Pathology 62: 1302-1309 Papasotiriou F.G., Varypatakis K.G., Christofi N., Tjamos S.E., and Paplomatas E.J. 2013. Olive mill wastes: A source of resistance for plants against Verticillium dahliae and a reservoir of biocontrol agents. Biological Control 67: 51-60 Stephou V.K., Tjamos S.E., Paplomatas E.J., and Athanassiou C.G. 2012. Transformation and attachment of Beauveria bassiana conidia on the cuticle of Tribolium confusum and Sitophilus oryzae in conjunction with diatomaceous earth. Journal of Pest Science 85: 387–394 Gizi D., Stringlis I.A., Tjamos S.E., and Paplomatas E.J. 2011. Seedling vaccination by stem injecting a conidial suspension of F2, a non-pathogenic. Fusarium oxysporum strain, suppresses Verticillium wilt of eggplant. Biological Control 58: 387–392 Schoina C., Stringlis I., Pantelides I., Tjamos S.E., and Paplomatas, E.J. 2011. Evaluation of application methods and biocontrol efficacy of Paenibacillus alvei strain K-165, against the cotton black root rot pathogen Thielaviopsis basicola. Biological Control 58: 68-73 Tsopelas P., Paplomatas E.J., Tjamos S.E., Soulioti N., and Elena K. 2011. First Report of Phytophthora ramorum on Rhododendron in Greece Plant Disease 95: 223 Tsopelas P., Paplomatas E.J., Tjamos S.E., and Elena K. 2011. First Record of Phytophthora nicotianae Causing Leaf Blight on Rhododendron in Greece Plant Disease 95: 777 Markakis E, Tjamos S.E., Antoniou P., Roussos P., Paplomatas, E.J., and Tjamos E.C. 2010. Phenolic Responses of Resistant and Susceptible Olive Cultivars Induced by Defoliating and Nondefoliating Verticillium dahliae Pathotypes. Plant Disease 94: 1156-1162 Pantelides I., Tjamos S.E., and Paplomatas, E.J. 2010. Ethylene perception via ETR1 is required in Arabidopsis infection by Verticillium dahliae. Molecular Plant Pathology 11: 191-202 Pantelides I., Tjamos S.E., and Paplomatas, E.J. 2010. Insights into the role of ethylene perception in tomato resistance to vascular infection by Verticillium dahliae. Plant Pathology 59: 130-138 Pantelides I., Tjamos S.E., Striglis I., Chatzipavlidis I., and Paplomatas, E.J. 2009. Mode of action of a non-pathogenic Fusarium oxysporum strain against Verticillium dahliae using Real Time QPCR analysis and biomarker transformation. Biological Control 50: 30-36 Markakis E, Tjamos S.E., Antoniou P., Paplomatas, E.J., and Tjamos E.C. 2009. Symptom development, pathogen isolation and Real Time QPCR quantification as important factors for evaluating resistance of olive cultivars to Verticillium pathotypes. European Journal of Plant Pathology 124: 603-611 Markakis EA., Tjamos SE., Chatzipavlidis I., Antoniou P.P., and Paplomatas E.J. 2008. Evaluation of compost amendments for control of vascular wilt diseases. Journal of Phytopathology 156: 622- 627 Antonopoulos D.F., Tjamos S.E., Antoniou P.P., Rafeletos P., Tjamos E.C. 2008. Effect of Paenibacillus alvei, strain K165, on the germination of Verticillium dahliae microsclerotia in planta. Biological Control 46: 166-170 Antoniou P.P., Markakis E.A., Tjamos S.E., Paplomatas E.J., and Tjamos E.C. 2008. Novel methodologies in screening and selecting olive varieties and root-stocks for resistance to Verticillium dahliae. European Journal of Plant Pathology 122: 549-560 Dimakopoulou M., Tjamos S.E., Antoniou P.P., Pietri A., Battilani P., Avramidis N., Markakis E.A., and Tjamos E.C. 2008. Phyllosphere grapevine yeast Aureobasidium pullulans reduces Aspergillus carbonarius (sour rot) incidence in wine producing vineyards in Greece. Biological Control 46: 158-165 Malandraki I., Tjamos S.E., Pantelides I., and Paplomatas, E.J. 2008. Thermal inactivation of compost suppressiveness implicates possible biological factors in disease management. Biological Control 44: 180- 187 Tjamos S.E., Markakis, E., Antoniou, P., and Paplomatas, E.J. 2006. First record of Fusarium wilt of tobacco in Greece imported as seedborne inoculum. Journal of Phytopathology 154: 193- 196 Tjamos S.E., Antoniou, P., and Tjamos E.C. 2006. Aspergillus spp., distribution, population composition and ochratoxin A production in wine-producing vineyards in Greece. International Journal of Food Microbiology 111: S61- S66 Kalogiannis S., Tjamos S.E., Antoniou P.P., Ziogas B.N. and Tjamos, E.C. 2006. Selection and evaluation of phyllosphere yeasts as biocontrol agents against grey mould of tomato. European Journal of Plant Pathology 116:69–76 Tjamos, S.E., Flemetakis, E., Paplomatas, E.J. and Katinakis, P. 2005. Induction of resistance to Verticillium dahliae in Arabidopsis thaliana by the biocontrol agent K-165 and Pathogenesis-Related Proteins Gene Expression. Molecular Plant Microbe Interactions 18: 555- 561 Paplomatas, E.J., Tjamos, S.E., Malandrakis, A.A., Kafka, A., and Zouvelou, V.S. 2005. Evaluation of composts amendments for suppressiveness against Verticillium wilt of eggplant and study of mode of action using a novel Arabidopsis pathosystem. European Journal of Plant Pathology 112: 183-189 Tjamos E.C., Tsitsigiannis, D.I., Tjamos, S.E., Antoniou, P.P., and Katinakis, P. 2004. Selection and screening of endorhizosphere bacteria from solarised soils as biocontrol agents against Verticillium dahliae of solanaceous hosts. European Journal of Plant Pathology 110: 35-44 Tjamos S.E, Antoniou P.P., Kazantzidou A., Antonopoulos D.F., Papageorgiou Ι., and Tjamos E.C. 2004. Aspergillus niger and Aspergillus carbonarius in Corinth raisin and wine-producing vineyards in Greece. Population composition, ochratoxin A production and chemical control. Journal of Phytopathology 152: 250- 255 Tjamos E.C., Antoniou, P.P., Tjamos, S.E. 2000. Implementation of soil solarization in Greece: conclusions and suggestions. Crop Protection 19: 843-846 |
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