Arbuscular mycorrhizae colonization dynamic in Iris pseudacorus L. during second year after inoculation and planting in field

Abstract

In the last few years was observed an unprecedented market expansion of microbial inoculants for agriculture and environmental applications. Fungi from the phylum Glomeromycota can establish symbiosis with roots of more than 70% vascular plant species, ensuring enhanced nutrient uptake. Aim of this study was to assess functional integration of inoculated arbuscular mycorrhiza and implications for success of symbiose in field conditions and host fitness. Iris pseudacorus was used as perennial model plant for study of seasonal continuity and persisting effects in second year after inoculation. During 2019 was conducted Trouvelot microscopic evaluation for 1080 stained root samples and parameters were obtained using Mycocalc. Results showed that colonization was significantly influenced by phenophase. Inoculated plants presented values with 1.56-14.49% higher. Plant height correlated significantly positive with inoculation (r=0.336*). Results showed that colonization parameters are useful indicators in tracking symbiose across a temporal gradient.