| Autor: |
Alaux PL; Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud 2, box L7.05.06, 1348, Louvain-la-Neuve, Belgium., Mison C; Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud 2, box L7.05.06, 1348, Louvain-la-Neuve, Belgium., Senés-Guerrero C; Escuela de Ingeniería Y Ciencias, Tecnológico de Monterrey, General Ramón Corona 2514, 45138, Zapopan, Jalisco, Mexico., Moreau V; Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud 2, box L7.05.06, 1348, Louvain-la-Neuve, Belgium., Manssens G; Centre Indépendant de Promotion Fourragère (CIPF), Croix du Sud, 2 L7.05.11, Louvain-la-Neuve, Belgium., Foucart G; Centre Indépendant de Promotion Fourragère (CIPF), Croix du Sud, 2 L7.05.11, Louvain-la-Neuve, Belgium., Cranenbrouck S; Earth and Life Institute, Applied Microbiology, Mycology, Mycothèque de L'Université Catholique de Louvain (BCCM/MUCL), Université Catholique de Louvain, Croix du Sud 2, box L7.05.06, 1348, Louvain-la-Neuve, Belgium., Declerck S; Earth and Life Institute, Applied Microbiology, Mycology, Université Catholique de Louvain, Croix du Sud 2, box L7.05.06, 1348, Louvain-la-Neuve, Belgium. stephan.declerck@uclouvain.be. |
| Abstrakt: |
Arbuscular mycorrhizal fungi (AMF) are key actors among soil microbial inhabitants, forming beneficial associations with most horticultural plants and crops (e.g., maize). For maize, the world most cultivated cereal, data on AMF species diversity in fields is sparse and even totally nonexistent in the southern part of Belgium where maize represents 8% of the cultivated area. In the present study, 14 maize fields in South Belgium under conventional, conversion, or organic management were analyzed for AMF diversity and species composition using 454 pyrosequencing. A large part (54%) of the 49 AMF species observed were unknown or have not been described in the literature. AMF diversity highly varied among fields, with the number of species ranging between 1 and 37 according to the field. A statistically significant effect of management was measured on AMF diversity, with the highest Hill index values (diversity and richness) under the organic management system compared with conventional management or conversion. Our results suggest a positive effects of organic management on AMF diversity in maize. They also highlight the rather high diversity or richness of AMF and the large portion of sequences not yet ascribed to species, thereby emphasizing a need to intensify AMF identification in cropping systems. |
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