Impact of arbuscular mycorrhizal fungi and Pseudomonas fluorescens on growth, physiological parameters and essential oil content in Ocimum basilicum L.

Abstract

A pot experiment was performed to see the interactive potential of Glomus mosseae and Acaulospora laevis alone or in combination with Pseudomonas fluorescens on Ocimum basilicum L. under glass house conditions. Various morphological and physiological parameters were measured after 120 days. Although, all co-inoculation treatments showed beneficial effects but G. mosseae is found to be the most compatible strain found in the rhizosphere of basil plant. G. mosseae alone or in combination with other bioinoculants showed maximum increase in all the different parameters studied (plant height, fresh weight, dry weight, leaf number, inflorescence height, root and shoot phosphorus, acidic and alkaline phosphatase and oil content). The overall results demonstrate that the co-inoculation of P. fluorescens with AM fungi promotes higher mycorrhizal colonization enhancing nutrient acquisition especially phosphorus (P), producing plant growth hormones resulting in improvement of rhizospheric condition of soil, altering the physiological and biochemical properties of sweet basil.

Impact of Funneliformis mosseae Inoculation on the Growth and Productivity of Gladiolus grandiflorus L. under Different Types and Rates of Organic Manures Fertilization

“…Also, Nafady et al (2018) stated that AMF symbiosis can provide mineral nutrients for faba bean plant growth and improved the structure of the soil. Moreover, Jangra et al (2019) on Ocimum basilicum L. demonstrated that the co-inoculation of Pseudomonas fluorescens with AMF increased nutrient absorption especially phosphorus. Also, Khatun (2020) indicated that the P content of leaf tissue remains higher in AMF Coleus plants as compared to non-mycorrhizal ones and there was an increase in the amount of phosphorus with increase in age of the plant.…”

Compost Fungi Allow for Effective Dispersal of Putative PGP Bacteria

“…Filamentous compost fungi such as Aspergillus and Mucor may play a fundamental role [51,52] as conduits for efficient colonization of roots and soil habitats or the access to soil nutrients [7,18]. For instance, co-inoculation of biocontrol bacteria Pseudomonas fluorescens with arbuscular mycorrhizal Glomus mosseae demonstrated that P. fluorescens enabled better mycorrhizal colonization of roots of basil (Ocimum basilicum L.) [60].…”