Interactions between a plant growth-promoting rhizobacterium, an AM fungus and a phosphate-solubilising fungus in the rhizosphere of Lactuca sativa

Interactions between arbuscular mycorrhizal fungi and phosphate-solubilizing fungus (Mortierella sp.) and their effects on Kostelelzkya virginica growth and enzyme activities of rhizosphere and bulk soils at different salinities

“…We have observed the same for shoot and root dry weights of K. virginica inoculated with AMF and/or Ms at all salinity levels. The dual inoculation with AMF and PSF had positive effects on alfalfa (Piccini and Azcon 1987), wheat (Singh and Kapoor 1999), and Lactuca sativa (Kohler et al 2007). Osorio and Habte (2001) suggested a synergistic interaction between PSM and AMF.…”

“…Rodriguez and Fraga (1999) suggested that the inoculated rhizobacteria could release P ions from insoluble P sources and the released P was taken up by the external arbuscular mycorrhizal mycelium because the rhizobacteria cannot transfer P to roots. Previous studies showed that coinoculation of AMF and PSF could enhance plant biomass, P concentration of plant tissues (e.g., Piccini and Azcon 1987;Singh and Kapoor 1999;Osorio and Habte 2001;Kohler et al 2007), soil microbial activities (Kohler et al 2007), and other soil properties (Matiasa et al 2009). Thus, it is necessary to study the effects of AMF and PSF on microbial activities of saline soil and plant growth for the development of sustainable management of saline soils.…”

Crop genotype and a novel symbiotic fungus influences the root endophytic colonization potential of plant growth promoting rhizobacteria

“…Further, the endophytic colonisation ability of the strain is stimulated by co-inoculation with a novel symbiotic fungus Piriformospora indica. Therefore, symbiotic fungus behaves in an identical manner to the arbuscular mycorrhizal fungi (AMF) in stimulating the PGPR activity in the rhizosphere of crop, as reported by Werner (2001) and Kohler et al (2007). Roesti et al (2005) reported the stimulation of exophytic PGPR in wheat rhizosphere following inoculation with arbuscular mycorrhizal fungi.…”

“…Plant growth promoting rhizobacteria (PGPR) are bacteria capable of promoting plant growth by colonizing the plant root (Benizri et al, 2001). A number of studies show synergistic effect of plant growth promoting rhizobacteria and symbiotic fungi (Kohler et al, 2007). Root colonization (endophytic & exophytic) is a pre requisite to derive benefits from a PGPR (Chabot et al, 1996;Singh and Mukerji, 2006).…”

Improving Activity of Native Arbuscular Mycorrhizal Fungi (AMF) for Mycorrhizal Benefits in Agriculture: Status and Prospect

“…The microbial consortium may include combination of compatible beneficial microorganisms having various plant growth promoting and pest controlling functions catering to the diversified crop cultivation need by one inoculum. Coinoculation of multifunctional microorganisms combinations like (i) AMF + PGPR + PSB in lettuce [76], (ii) AMF + PGPR (Azospirillum, Azotobacter, Pseudomonas etc.) in Rhodes grass (Chloris gayana Kunth) [77], (iii) AMF + PSB in clover [78] and in English mint (Mentha piperita L.) [79] not only expressed individual beneficial effects, also resulted in additive or synergistic effects on plant growth promotion.…”