CampagnacKhasa2014

Référence

Campagnac, E., Khasa, D.P. (2014) Relationship between genetic variability in Rhizophagus irregularis and tolerance to saline conditions. Mycorrhiza, 24(2):121-129.

Résumé

Reclamation of saline soils produced by extraction of bitumen from oil sands is challenging. The main objective of this study was to select a salt-tolerant arbuscular mycorrhizal (AM) fungal isolate that could, in the future, be used to pre-inoculate plants used in reclamation of saline substrates produced by oil sand industry. To achieve this, the effects of NaCl, Na2SO4, and saline release water from composite tailings (CT) on hyphal growth of two AM fungal isolates from non-saline (Rhizophagus irregularis DAOM 181602, Rhizophagus sp. DAOM 227023) and three isolates of R. irregularis isolated from saline or sodic soils (DAOM 234181, DAOM241558, and DAOM241559) were tested in vitro. Pre-symbiotic hyphal growth of the five isolates, in absence of a host plant, decreased with increasing salt stress and no spores germinated in CT. The symbiotic extraradical phase of the four isolates of R. irregularis developed well in saline media compared to the Rhizophagus sp. Nevertheless, fungal development of the four R. irregularis isolates differed in saline media indicating phenotypic variations between isolates.

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@ARTICLE { CampagnacKhasa2014,
    AUTHOR = { Campagnac, E. and Khasa, D.P. },
    TITLE = { Relationship between genetic variability in Rhizophagus irregularis and tolerance to saline conditions },
    JOURNAL = { Mycorrhiza },
    YEAR = { 2014 },
    VOLUME = { 24 },
    PAGES = { 121-129 },
    NUMBER = { 2 },
    MONTH = { FEB },
    ABSTRACT = { Reclamation of saline soils produced by extraction of bitumen from oil sands is challenging. The main objective of this study was to select a salt-tolerant arbuscular mycorrhizal (AM) fungal isolate that could, in the future, be used to pre-inoculate plants used in reclamation of saline substrates produced by oil sand industry. To achieve this, the effects of NaCl, Na2SO4, and saline release water from composite tailings (CT) on hyphal growth of two AM fungal isolates from non-saline (Rhizophagus irregularis DAOM 181602, Rhizophagus sp. DAOM 227023) and three isolates of R. irregularis isolated from saline or sodic soils (DAOM 234181, DAOM241558, and DAOM241559) were tested in vitro. Pre-symbiotic hyphal growth of the five isolates, in absence of a host plant, decreased with increasing salt stress and no spores germinated in CT. The symbiotic extraradical phase of the four isolates of R. irregularis developed well in saline media compared to the Rhizophagus sp. Nevertheless, fungal development of the four R. irregularis isolates differed in saline media indicating phenotypic variations between isolates. },
    ADDRESS = { 233 SPRING ST, NEW YORK, NY 10013 USA },
    AFFILIATION = { Campagnac, E (Reprint Author), Univ Laval, Ctr Etud Foret, Quebec City, PQ G1V0A6, Canada. Campagnac, E.; Khasa, D. P., Univ Laval, Ctr Etud Foret, Quebec City, PQ G1V0A6, Canada. Campagnac, E.; Khasa, D. P., Univ Laval, Inst Biol Integrat \& Syst, Quebec City, PQ G1V0A6, Canada. },
    AUTHOR-EMAIL = { campagnac.estelle@gmail.com },
    DOC-DELIVERY-NUMBER = { 302TM },
    DOI = { 10.1007/s00572-013-0517-8 },
    EISSN = { 1432-1890 },
    FUNDING-ACKNOWLEDGEMENT = { NSERC discovery; CRD CONRAD-NSERC },
    FUNDING-TEXT = { This work was supported by NSERC discovery and CRD CONRAD-NSERC grants to Damase Khasa. We thank Serge Sokolski for his help with the molecular analyses. We also thank Serge Sokolski and Jean-Guy Catford for their valuable comments on a previous draft of this manuscript. },
    ISSN = { 0940-6360 },
    JOURNAL-ISO = { Mycorrhiza },
    KEYWORDS = { Arbuscular mycorrhizal fungi; Rhizophagus; Salt stress; Spore germination; Extraradical hyphae; Intraspecificity },
    KEYWORDS-PLUS = { ARBUSCULAR MYCORRHIZAL FUNGI; GLOMUS-INTRARADICES; SPORE GERMINATION; IMPROVED GROWTH; SALT STRESS; OIL SANDS; SOIL; INOCULATION; DIVERSITY; TOMATO },
    LANGUAGE = { English },
    NUMBER-OF-CITED-REFERENCES = { 47 },
    OWNER = { nafon9 },
    PUBLISHER = { SPRINGER },
    RESEARCH-AREAS = { Mycology },
    TIMES-CITED = { 0 },
    TIMESTAMP = { 2014.03.07 },
    TYPE = { Article },
    WEB-OF-SCIENCE-CATEGORIES = { Mycology },
}

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