Unraveling the diversity of hyphal explorative traits among Rhizophagus irregularis genotypes.

ABSTRACT: Differences in functioning among various genotypes of arbuscular mycorrhizal (AM) fungi can determine their fitness under specific environmental conditions, although knowledge of the underlying mechanisms still is very fragmented. Here we compared seven homokaryotic isolates (genotypes) of Rhizophagus irregularis, aiming to characterize the range of intraspecific variability with respect to hyphal exploration of organic nitrogen (N) resources, and N supply to plants. To this end we established two experiments (one in vitro and one in open pots) and used ¹⁵N-chitin as the isotopically labeled organic N source. In Experiment 1 (in vitro), mycelium of all AM fungal genotypes transferred a higher amount of ¹⁵N to the plants than the passive transfer of ¹⁵N meas

SUBMITTER: Sun D 

PROVIDER: S-EPMC11283409 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature