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International Journal of Medicinal Mushrooms
Импакт фактор: 1.211 5-летний Импакт фактор: 1.394 SJR: 0.433 SNIP: 0.661 CiteScore™: 1.38

ISSN Печать: 1521-9437
ISSN Онлайн: 1940-4344

Выпуски:
Том 21, 2019 Том 20, 2018 Том 19, 2017 Том 18, 2016 Том 17, 2015 Том 16, 2014 Том 15, 2013 Том 14, 2012 Том 13, 2011 Том 12, 2010 Том 11, 2009 Том 10, 2008 Том 9, 2007 Том 8, 2006 Том 7, 2005 Том 6, 2004 Том 5, 2003 Том 4, 2002 Том 3, 2001 Том 2, 2000 Том 1, 1999

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v10.i1.80
pages 65-72

The Role of Lectin-Carbohydrate Biospecific Interactions between Medicinal Basidiomycetes Mushroom Grifola frondosa (Dicks.: Fr.) S. F. Gray and Azospirillum brasilense During Their Co-cultivation

Lada V. Stepanova
Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russia
Andrei V. Schelud'ko
Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russia
Elena I. Katsy
Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russia
Elena G. Ponomareva
Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russia
Valentina E. Nikitina
Laboratory of Microbiology, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov, Russia

Краткое описание

We studied the role of lectin-carbohydrate recognition as a biospecific interaction during co-cultivation of the culinary-medicinal Basidiomycetes species Grifola frondosa and the diazotrophic bacterium Azospirillum brasilense Sp245 on an agar-supplemented medium. We showed that A. brasilense Sp245 and its Omegon-Km mutants, KM018 and KM139, defective in lipopolysaccharide (LPS) structure, whose LPSs contain O-specific polysaccharide (acidic OPS1, linear D-rhamnan), a hapten for the fungal lectin, are recognized by the fungus with the least antagonism, as distinct from mutants KM252 and KM348, which have neutral OPS2 and are inhibitory to the growth of the G. frondosa 0917 mycelium. Studying the influence of a pure lectin preparation on the motilities of these strains in a liquid medium, with the exception of the immotile KM018, revealed a decrease in the swimming speeds of Sp245 and KM139. The motilities of KM252 and KM348 were almost unaffected by the lectin. The obtained results attest to the involvement of biospecific lectin-carbohydrate interactions in the primary contact between the G. frondosa 0917 mycelium and the bacterium A. brasilense during co-cultivation. It is most probable that, in this case, the lectin acts as an attractant-like factor on the bacteria, thus ensuring the recognizing and protective functions of the fungus.


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