Arbuscular mycorrhizal fungal isolate effectiveness on growth and root colonization of Panicum virgatum in acidic soil

Clark, R. B.; Zeto, S. K.; Zobel, R. W.

doi:10.1016/s0038-0717(99)00084-x

Cited by 83 publications

(52 citation statements)

References 19 publications

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“…There are several reports in support of the present observation that soil liming could stimulate the root colonization by AMF (Clark et al, 1999;Siqueira et al, 1990;Sano et al, 2002;Morammad et al, 2003). The stimulatory effect of soil liming on AMF colonization has been attributed to improvements in the rhizosphere conditions of plants, such as higher nutrient availability, increase of soil pH and decrease in soil Al and Fe concentrations (Clark et al, 1999). Contrarily, the significant positive correlations between AMF colonization in P. cupana and soil ECEC and AS may indicate tolerance of this host plant to toxic soil Al, as previously suggested by Oliveira (2001).…”

Section: Discussionsupporting

confidence: 88%

“…In T. grandiflorum, the positive correlation between AMF colonization and SB, and negative correlation between AMF colonization and Al or Al + H suggested that the liming application could stimulate root colonization by AMF in this edaphic condition. There are several reports in support of the present observation that soil liming could stimulate the root colonization by AMF (Clark et al, 1999;Siqueira et al, 1990;Sano et al, 2002;Morammad et al, 2003). The stimulatory effect of soil liming on AMF colonization has been attributed to improvements in the rhizosphere conditions of plants, such as higher nutrient availability, increase of soil pH and decrease in soil Al and Fe concentrations (Clark et al, 1999).…”

Section: Discussionsupporting

confidence: 68%

See 1 more Smart Citation

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species

Oliveira

2010

Braz. arch. biol. technol.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionsupporting

confidence: 68%

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species

Oliveira

2010

Braz. arch. biol. technol.

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“…2). Differences among AMF taxa in effects on plant biomass have been documented in numerous studies (e.g., Abbott and Robson 1985;Guissou et al 1998;Vosátka and Dodd 1998;Clark et al 1999;Ozgonen and Erkilic 2007;Sensoy et al 2007;Powell et al 2009;Watanarojanaporn et al 2011). The results of the current study are not generally consistent with expectations based on investment in extraradical hyphae, arbuscules, or vesicles by AMF genera (e.g., Hart and Reader 2002a, b;Treseder 2005).…”

Section: Plant P Contentcontrasting

confidence: 83%

“…3 and 4). For instance, in the C4 grass Panicum virgatum, a relatively minor ΔPRLC of 20-30 percentage points resulted in a 20-to 60-fold increase in plant P content (Clark et al 1999). This pattern could have resulted from better nutrient use efficiency of these plant functional groups compared to the others.…”

Section: Plant P Contentmentioning

confidence: 99%

The extent of mycorrhizal colonization of roots and its influence on plant growth and phosphorus content

2013

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Aims The most common metric of arbuscular mycorrhizal fungal (AMF) abundance is percent root length colonized (PRLC) by mycorrhizal structures. Frequently, plants with greater PRLC are assumed to receive more nutrients (such as phosphorus, P) from their mycorrhizal symbionts, leading to greater plant growth. Nevertheless, the functional significance of this metric remains controversial. In this review, I discuss whether manipulations of PRLC generally led to changes in plant biomass and P content, and whether AMF taxa and plant functional groups influence these relationships. Methods I conducted a meta-analysis of laboratoryand field-based trials in which mycorrhizal colonization was directly altered compared to unmanipulated controls. For each trial, I calculated (1) the difference in PRLC (ΔPRLC) between the treatments, and (2) the response ratio of plant biomass. In a subset of these studies, the response ratio of P content of host plants could also be calculated. ResultsThe response ratio of plant biomass and P content rose significantly and exponentially as ΔPRLC increased. Nevertheless, ΔPRLC explained only a fraction of the variation in response ratios in each case. Moreover, AMF taxa varied in their effects on biomass per unit ΔPRLC. In addition, plant functional groups differed in effects on plant P content per unit ΔPRLC, with C4 grasses responding most strongly. Conclusions It appears that as the extent to which plant roots are colonized by AMF increases, plant growth and P content often increase, although substantial variability exists among trials. As others have found, a likely mechanism for this relationship is increased transfer of P (and perhaps other nutrients) through the more-prevalent mycorrhizal structures.

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“…Within this microbiota, stand out the arbuscular mycorrhizal fungi (AMF), which establish a mutualistic symbiosis called arbuscular mycorrhiza, with most of terrestrial plants. In this symbiosis, AMF benefit nutrient absorption and translocation to plant, particularly those less mobile in the soil, such as phosphate, ammonium, and numerous micronutrients, due to the extension of the radical system that represents the fungal hyphae in the soil (Clark et al, 1999;Barea, 2000;Cornejo et al, 2008a). In turn, the fungus receives carbonaceous compounds from plant photosynthesis (Pfeffer et al, 1999;Bago et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

Cornejo

Rubio

Borie

2009

Chilean J. Agric. Res.

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Arbuscular mycorrhizal fungi (AMF) form symbiosis with plant roots, improving its establishment, nutrition, and tolerance to adverse soil conditions. In annual crop rotations, some aspects such as the type of N fertilizer and tillage system used can affect the AMF propagule density and its functionality in the following crop. To analyze the effect of the agronomic practices previously mentioned on the persistence and density of AMF propagules, a study in a succession of cereals was carried out. For this, soil previously cropped with wheat (Triticum aestivum L.) and fertilized with urea (NH4 + ) or sodium nitrate (NO3 -) was disturbed in each case by simulating conventional tillage (CT) or maintained without disturbing, simulating no-tillage (NT). It was then cultivated with oat (Avena sativa L.) using the same N sources. Higher densities of AMF active mycelium and colonized root length in the NT soil were observed (76 and 497% higher than in CT soil, respectively, P < 0.001). Moreover, NT + NO3 -interaction produced a higher density of AMF spores (75% higher than in the rest of the treatments, P < 0.05), although showing a decrease in comparison with the previous wheat crop. These results suggest that N source and tillage system interact to influence persistence and density of AMF propagules, an important aspect to consider in acidic soils intended for annual crops.

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Arbuscular mycorrhizal fungal isolate effectiveness on growth and root colonization of Panicum virgatum in acidic soil

Cited by 83 publications

References 19 publications

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species

Influence of edapho-climatic factors on the sporulation and colonization of arbuscular mycorrhizal fungi in two Amazonian native fruit species

The extent of mycorrhizal colonization of roots and its influence on plant growth and phosphorus content

Mycorrhizal Propagule Persistence in a Succession of Cereals in a Disturbed and Undisturbed Andisol Fertilized with Two Nitrogen Sources

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