Sector of Nitrogen-Fixing Microorganisms
Laboratory of Nitrogen-Fixing Microorganisms was founded in 1961. The Sector of Nitrogen-Fixing Microorganisms has been established since 2017. The main fields of activity of the sector are agricultural microbiology and soil ecology. The sector is involved in the study of ecology, biological properties and nitrogen-fixing activity of nodule bacteria, as well as in the production of fertilizers based thereon.
RESEARCH MAIN DIRECTIONS
- Restoration of saline soils using nodule bacteria and legume plants
- Isolation and study of nodule bacteria of the genera Rhizobium, Mesorhizobium, Sinorhizobium, Bradyrhizobium from wild legume plants common in Armenia
MAIN INVESTIGATION RESULTS
- As a result of research “Rhizomix” biofertilizer enriching the soil with nitrogen, environmentally friendly based on symbiotic and free living nitrogen-fixing bacteria has been obtained.
- “Rhizomix” biofertilizer significantly increases the yield of peanut, soy, beans, peas, lentils and contributes to the increase of protein content in the seeds.
- For the first time the ecological distribution of nodule bacteria in Artsakh soils has been studied.
MAIN OBJECTIVES AND TASKS
- The main purpose of research is the study of nitrogen-fixing effective bacteria and their symbiotic co-existence and possible practical application.
- One of the most important tasks has been the preservation and replenishment of the collection of symbiotic and free-living bacteria (400 strains) in the laboratory since 1948.
- Development of the growing methods for plants of Papilionaceae family in salt-alkaline soils of Armenia is a significant part of the research using the technology of inoculating with salt-resistant strains.
- Isolation of nodule bacteria from wild legume herbs and shrubs listed in the Red Data Book of Armenia to improve ecology of the Armenian soils for subsequent land reclamation.
LIST OF GRANT PROJECTS
The Rufford Small Grants Foundation “Exploration and Identification of the New Habitants for Papilionaceae Endangered Species in Armenia”, UK, 2016-2017 (Project Manager: V. Hakobyan, PhD). https://www.rufford.org/projects/vahagn_hakobyan
- Matevosyan F.S., Harutyunyan S.H., Stepanyan T.H., Hakobyan V.P. The possibility of using nodule bacteria stored on different substrates in order tо improve the ecological balance of the soil // V International Scientific and Practical Conference of Young Scientists and Specialists “Ecological and Biological Problems of the Use of Natural Resources in Agriculture”, 2019, Yekaterinburg, pp. 125-133. https: elibrary.ru/item.asp/id = 39283256.
- Harutyunyan S.A., Stepanyan T.U., Matevosyan F.S., Akopyan V.P. Productivity of Rhizօmix biofertilizer for peas (Pisum sativum) and chickpea (Cicer arietinum) // VI International Scientific and Practical Conference of Young Scientists and Specialists “Ecological and biological problems of the use of natural resources in agriculture.” Proceedings of the IV international scientific and practical conference of young scientists and specialists June, 2018, Yekaterinburg, pp. 26-32. https: elibrary.ru/item.asp/id = 35692527, https: /elibrary.ru/item.asp/ id = 35692509.
- Stepanyan T.H., Harutyunyan S.H., Aleksanyan N.M., Matevosyan F.S., Hakobyan V.P. The environmental prevalence of nodule bacteria in soils of Artsakh // International scientific and environmental conference dedicated to the 95th anniversary of the Kuban State Agrarian University on the theme: “Problems of the reclamation of household waste, industrial and agricultural production”, March 28-30, 2017, pp. 55-61, Elibrary-28950807-18430306.
- Matevosyan F.S., Harutyunyan S.Н., Stepanyan T.H., Aleksanyan N.M. Root sap as exogenous factor for the adhesion of nodule bacteria // Biological Journal of Armenia, 2013, 65 (4). pp. 30-34.
- Matevosyan F.S., Stepanyan T.H., Harutyunyan S.H., Alexanyan N.M. On adhesion activity of nodule bacteria // The Reports of the National Academy of Sciences of Armenia, 2011, vol. 3, No. 111, pp. 289-295.
- Stepanyan T., Harutyunian S., Aleksanyan N., Matevosyan F., Akopian J. Use of nodule bacteria in association with free-living soil bacteria to inoculation nonlegume plants // Biological Journal of Armenia, 2010, 62(3), pp. 86-90.
Akopian J., Stepanian T., Matevossian F., Alexanian N. Le nitragin et la zeolite naturelle: nouveaux procedes de leur utilizarion dans l` agroculture., Brevet d`invention, No. 0603146, Republique Francaise, 2008.
Abstracts Presented at Conferences
- Harutyunyan S.A., Stepanyan T.H., Matevosyan F.S, Hakobyan V.P. Characterization of the growth of salt tolerant nodule bacteria from Armenia soils // International Conference “Microbes: Biology & Application”, October 9-11, 2019, Yerevan, Armenia, pp. 25-26.
- Tamara H. Stepanyan, Seda H. Harutyunyan., Nina M. Aleksanyan, Flora S. Matevosyan, Vahagn P. Hakobyan The distinctive feature of the prevalence of aboriginal strains of nodule bacteria in soil of Artsakh // IV International Scientific Conference “Biotechnology Science and Practice”, 28-30 September, 2017, Yerevan, Armenia, p. 8.
- Seda H. Harutyunyan, Tamara H. Stepanyan, Flora S. Matevosyan, Nina M. Alexanyan, Vahagn P. Hakobyan The influence of the nodule bacteria strain influence on the efficiency of selection sorts of soybean in Armenia // IV International Scientific Conference “Biotechnology Science and Practice”, 28-30 September, 2017, Yerevan, Armenia, pp. 25-26.
- V. Hakobyan, A. Papikyan and A. Poghosyan Exploration and Identification of the New Habitants for Papilionaceae Endangered Species in Armenia // IV International Scientific Conference “Biotechnology Science and Practice”, 28-30 September, 2017, Yerevan, Armenia, pp. 76-77.
- Tamara H. Stepanyan, Nina. M. Alexanyan, Flora S. Matevosyan, Seda H. Harutyunyan, Vahagn P. Hakobyan Creation of cost-effective and ecologically sustainable agrobiophitocenoses using the legume-Rhizobium symbiosis // III International Scientific Conference “Diologues on Sciences”, 23-26 June, 2015, Yerevan, Armenia, p. 94.
- Seda H. Harutyunian, Vahagn P. Hakobian Nodulation ability of strains of Mesorhizobium ciceri and new strains isolated from nodules of Amorpha ruticosa growing in Armenia // III International Scientific Conference “Diologues on Sciences”, 23-26 June, 2015, Yerevan, Armenia, pp. 16-18 (Poster presentation).
- Stepanyan T.H., Harutyunyan S.H., Alexanyan N.M. Matevosyan F.S. Compared study free aminoacids and sugars, of root exudates of whereas // International Academy of Education. Collected materials anniversary conference, “Haybusak”, 2011, Yerevan, pp. 96-97.