Divergence of mycorrhizal fungal communities in crop production systems

Diversity of Arbuscular Mycorrhizal Fungi in an Amazon Environment after Mining

“…The species richness and diversity indices of Shanonn-Wiener, the dominance index of Simpson and the equitability index of Pielou for AMF species were calculated for community analysis (Hendrix et al, 1995) in each area studied.…”

“…One part of the soil samples was used for spore extraction, counting, and identification and the other part was used to set up the bioassay experiment as discussed by Hendrix et al (1995).…”

“…The aerial part was discarded, the substrate was homogenized, and a sample was taken from each tube for spore extraction and species identification. The presence or absence (+ or -) of spores was estimated at each dilution level (Hendrix et al, 1995).…”

“…Nevertheless, the morphological identification of spores from field can be problematic due to the degradation state of the spores (Turrini et al, 2010). Thus for solve this problem a bioassay can then be recommended for a better estimate of the number of species present in soil (Tommerup, 1994;Hendrix et al, 1995). This technique is based on the identification of spores of species that have multiplied in different dilutions (Hendrix et al, 1995).…”

“…Thus for solve this problem a bioassay can then be recommended for a better estimate of the number of species present in soil (Tommerup, 1994;Hendrix et al, 1995). This technique is based on the identification of spores of species that have multiplied in different dilutions (Hendrix et al, 1995). However, the disadvantage of this method is detecting only species that are producing spores (Brundrett et al, 1999), together with the identification of spores extracted directly from soil the bioassay method can access almost the complete diversity of AMF in an area.…”