Symbiotic fungi that are essential for plant nutrient uptake investigated with NMP

Pallon, Jan; Wallander, Håkan; Hammer, Edith C.; Arteaga-Marrero, Natalia; Auzelyté, Vaida; Elfman, Mikael; Kristiansson, P.; Olsson, Pål Axel; Wegdén, Marie

doi:10.1016/j.nimb.2007.02.018

Cited by 25 publications

(19 citation statements)

References 9 publications

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“…Rhizophagus intraradices-inoculated plants generally exhibited nutrient ratios indicative of P limitation, whereas for G. margarita-mycorrhized plants, corresponding ratios strongly implied either N or K limitation (Veresoglou et al 2011). Particleinduced X-ray emission experiments involving the AMF R. intraradices suggest that the K taken up by AMF were accumulated in various fungal structures like hyphae, vesicles, and spores (Johansson and Campbell 1988;Pallon et al 2007;Olsson et al 2008Olsson et al , 2011. Although transporters and channels of AMF involved in P transport are characterized, these are missing for K (Garcia and Zimmermann 2014).…”

Section: Role Of Amf In K Uptakementioning

confidence: 99%

Interactions Between Arbuscular Mycorrhizal Fungi and Potassium-Solubilizing Microorganisms on Agricultural Productivity

Priyadharsini

Muthukumar

2016

Potassium Solubilizing Microorganisms for Sustainable Agriculture

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Microbial interaction is a key determinant of soil fertility, plant health, and crop productivity. Arbuscular mycorrhizal fungi (AMF) belonging to the phylum Glomeromycota are a ubiquitous component of most natural and agroecosystems. These fungi associate with most of the plant species and provide several benefits including better nutrition and increased tolerance to various biotic and abiotic stresses. Mycorrhizal symbiosis can affect the microbial population and their activity in the rhizosphere both qualitatively and quantitatively including mineral solubilization by microorganisms. These changes are mediated through the so-called mycorrhizosphere effect resulting from direct or indirect changes in root exudation (composition and quantity) patterns or through fungal exudates. In most instances, the interaction between AMF and nutrient-solubilizing microorganisms is synergistic resulting in stimulation of plant growth through improved nutrient acquisition and inhibition of plant pathogens. The ecological impact of AMF interactions with microorganisms involved in potassium solubilization is not well resolved compared to those involved in phosphate solubilization. Although direct studies on the interactions between AMF and potassium-solubilizing microorganisms (KSMs) on plant growth are limited, studies on plant growth-promoting microorganisms (PGPMs) and AMF do involve organisms with K-solubilizing capabilities. Evidence does exist on the influence of KSMs on mycorrhizal formation and function. Interactions between AMF and KSMs are vital in sustainable low-input crop production systems that rely on biological processes to achieve improved plant growth and yield in addition to maintaining soil fertility. This article examines the interactions between AMF and KSMs on plant growth, development, and crop productivity.

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Section: Role Of Amf In K Uptakementioning

confidence: 99%

Interactions Between Arbuscular Mycorrhizal Fungi and Potassium-Solubilizing Microorganisms on Agricultural Productivity

Priyadharsini

Muthukumar

2016

Potassium Solubilizing Microorganisms for Sustainable Agriculture

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“…Earlier PIXE studies have shown the elemental composition in fungal fruiting bodies (Kral et al 2005), ectomycorrhizal roots and hyphae (Wallander et al 2003), bladders of the fungus Geosiphon pyriforme (Maetz et al 1999;Scheloske et al 2001), AM colonised roots (Scheloske et al 2004), and AM fungal spores (Przybylowicz et al 2004;Pallon et al 2007;Olsson et al 2008;Hammer et al 2011aHammer et al , 2011b. In the PIXE studies of AM fungi a main focus has been the potential to accumulate heavy metals, in order to investigate if they can remediate contaminated soil (Weiersbye et al 1999;Turnau et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Elemental composition in vesicles of an arbuscular mycorrhizal fungus, as revealed by PIXE analysis

et al. 2011

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“…For potassium, the early study of George et al (1992) indicated that the extraradical hyphae of AM symbiosis could absorb potassium from soil, and provided the evidence that AM fungi could supply host plant with potassium. The accumulated potassium in different parts of AM fungus and mycorrhizal root section suggested that the AM fungi were capable of potassium absorption and transportation from soil to plant root (Scheloske et al, 2004; Pallon et al, 2007; Olsson et al, 2008). In plant, potassium content was highly correlated with phosphate content (Olsson et al, 2011), and played the major role as a counter-ion in polyphosphate stabilization (Orlovich and Ashford, 1993; Kikuchi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungus Rhizophagus irregularis Increased Potassium Content and Expression of Genes Encoding Potassium Channels in Lycium barbarum

Zhang

Wei

et al. 2017

Front. Plant Sci.

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Potassium in plants accounts for up to 10% dry weight, and participates in different physiological processes. Under drought stress, plant requires more potassium but potassium availability in soil solutes is lowered by decreased soil water content. Forming symbiosis with arbuscular mycorrhizal (AM) fungi not only enlarges exploration range of plant for mineral nutrients and water in soil, but also improves plant drought tolerance. However, the regulation of AM fungi on plant root potassium uptake and translocation from root to shoot was less reported. In current study, the effect of an AM fungus (Rhizophagus irregularis), potassium application (0, 2, and 8 mM), and drought stress (30% field capacity) on Lycium barbarum growth and potassium status was analyzed. Ten weeks after inoculation, R. irregularis colonized more than 58% roots of L. barbarum seedlings, and increased plant growth as well as potassium content. Potassium application increased colonization rate of R. irregularis, plant growth, potassium content, and decreased root/shoot ratio. Drought stress increased colonization rate of R. irregularis and potassium content. Expression of two putative potassium channel genes in root, LbKT1 and LbSKOR, was positively correlated with potassium content in root and leaves, as well as the colonization rate of R. irregularis. The increased L. barbarum growth, potassium content and genes expression, especially under drought stress, suggested that R. irregularis could improve potassium uptake of L. barbarum root and translocation from root to shoot. Whether AM fungi could form a specific mycorrhizal pathway for plant potassium uptake deserves further studies.

show abstract

Symbiotic fungi that are essential for plant nutrient uptake investigated with NMP

Cited by 25 publications

References 9 publications

Interactions Between Arbuscular Mycorrhizal Fungi and Potassium-Solubilizing Microorganisms on Agricultural Productivity

Interactions Between Arbuscular Mycorrhizal Fungi and Potassium-Solubilizing Microorganisms on Agricultural Productivity

Elemental composition in vesicles of an arbuscular mycorrhizal fungus, as revealed by PIXE analysis

Arbuscular Mycorrhizal Fungus Rhizophagus irregularis Increased Potassium Content and Expression of Genes Encoding Potassium Channels in Lycium barbarum

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