Total phenol, anthocyanin, and terpenoid content, photosynthetic rate, and nutrient uptake of Solanum nigrum L. and Digitaria sanguinalis L. as affected by arbuscular mycorrhizal fungi inoculation
2020
Rashidi, Sakineh | Yousefi, Ali Reza | Pouryousef, Majid | Goicoechea, Nieves
Over the last decades, tillage, chemical fertilizers, and pesticides have reduced the beneficial fungal population size in arable soils. Though soil inoculation can be a practical way to restore arbuscular mycorrhizal fungi (AMF) population size, weeds may also be benefited, as well. This study was aimed to evaluate the effect of three AMF species (Funneliformis mosseae, Rhizoglomus fasciculatum, and Rhizoglomus intraradices) on photosynthetic rate, secondary metabolites content, reproductive organs percentage and nutrient uptake in Solanum nigrum L. and Digitaria sanguinalis L. weed species. Our results showed species variation in response to AMF inoculation, so that, while inoculation with R. intraradices fungal species decreased total biomass in S. nigrum plants significantly, it increased total biomass of D. sanguinalis plants by 26–49%. In addition, inoculation with F. mosseae species increased phenol, anthocyanin, and total terpenoid content in S. nigrum plants much more than D. sanguinalis. Increased photosynthetic rate, secondary metabolites content, and flowering percentage in AMF‐inoculated S. nigrum plants show the enhanced competitive ability and allelopathic potential of this weed when associated with AMF, which makes it a good competitor against other plant species in the environment.
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