يعرض 1 - 19 نتائج من 19 نتيجة بحث عن '"low genetic variability"', وقت الاستعلام: 0.45s تنقيح النتائج
  1. 1
    Academic Journal

    المساهمون: Marrassini, Valentina, Ercoli, Laura, Kuramae, Eiko E., Kowalchuk, George A., Pellegrino, Elisa

    مصطلحات موضوعية: Characterization and selection of arbuscular mycorrhizal fungal (AMF) taxa to design inocula tailored to meet a spectrum of needs is a crucial first step to achieve specific beneficial agronomic functions. Commonly, commercial microbial inocula are based on generalist single AM fungal taxa, having low genetic variability and not offering efficiency and stability when applied in agroecosystems. In this study, we investigated the AMF functional variability at inter- and intra-species levels by characterizing colonization traits, host growth, and mineral uptake of single-spore AM fungi isolated from soils with a fertility gradient. Nineteen single-spore cultures, showing high spore density and AMF colonization, were phylogenetically assigned to different isolates of 3 AMF species (i.e. Entrophospora claroidea, Funneliformis mosseae and Archaeospora trappei). A higher functional variability in infectivity and effectiveness was detected among isolates within AMF species (25 % of total variance) than among AMF species. Most of AMF isolates of F. mosseae have a better outcome in terms of plant growth, although with a performance gradient, while the isolates of E. claroidea showed a variable functional pattern, and those of A. trappei a less variable pattern. Overall, isolates originating from the soil of the conventional arable field with higher pH and phosphorous availability promoted the uptake of plant nutrients, while those originating from soils with higher SOM and plant diversity promoted plant growth. On the contrary, the infectivity traits of the AM fungi were more conserved, as they were not affected by the environmental parameters of the soils of origin. Finally, we highlighted that soil pH played an important role in shaping the pattern of AMF functionality. Boosting the isolation and cultivation of AMF taxa, originating from agricultural and natural soils, is shown to be a key step in exploiting AMF diversity and designing the new generation of microbial inoculants

    وصف الملف: ELETTRONICO

    Relation: issue:197; firstpage:105344; lastpage:105359; numberofpages:16; journal:APPLIED SOIL ECOLOGY; https://hdl.handle.net/11382/574352

  2. 2
    Academic Journal
  3. 3
    Academic Journal
  4. 4
    Academic Journal
  5. 5
    Academic Journal
  6. 6
    Academic Journal
  7. 7
    Academic Journal
  8. 8
    Academic Journal
  9. 9
    Academic Journal
  10. 10
    Academic Journal
  11. 11
    Academic Journal
  12. 12
    Academic Journal
  13. 13
    Academic Journal
  14. 14
    Image
  15. 15
    Image
  16. 16
  17. 17
  18. 18
    Academic Journal

    المؤلفون: Maudet, C., Luikart, G., Taberlet, P.

    المساهمون: Laboratoire d'Ecologie Alpine (LECA), Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)

    المصدر: ISSN: 0999-193X.

    Relation: halsde-00279803; https://hal.science/halsde-00279803

  19. 19

    المساهمون: Pla, Kim, Laboratoire d'Ecologie Alpine (LECA), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])

    المصدر: Scopus-Elsevier
    Genetics Selection Evolution
    Genetics Selection Evolution, BioMed Central, 2001, 33, pp.S193-S203