Acquisition of Cu, Zn, Mn and Fe by mycorrhizal maize ( Zea mays L.) grown in soil at different P and micronutrient levels

Liu, A.; Hamel, Chantal; Hamilton, R. I.; L., B.; Smith, Donald L.

doi:10.1007/s005720050277

Cited by 312 publications

(156 citation statements)

References 31 publications

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“…It is no surprise, therefore, that the effect of mycorrhizal development varies from case to case. It appears that the importance of the arbuscular mycorrhizal symbiosis contribution to crop productivity depends mainly on the AMF involved (Johnson et al 1992;Sanders 2003), on the level of nutrient supply (Liu et al 2000a, b), on the conditions of the environment created by cropping practices (Johnson et al 1992;Johnson 1993;Corkidi et al 2002), and on the genetic make up of the crop plant produced (Liu et al 2000b(Liu et al , 2003.…”

Section: Arbuscular Mycorrhizal Fungi Are Present and Influential In mentioning

confidence: 99%

Impact of arbuscular mycorrhizal fungi on N and P cycling in the root zone

Hamel¹

2004

Can. J. Soil. Sci.

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Hamel, C. 2004. Impact of arbuscular mycorrhizal fungi on N and P cycling in the root zone. Can. J. Soil Sci. 84: 383-395. The influence of arbuscular mycorrhizal fungi (AMF) on soil processes is difficult to define, in part because it varies with the plant and fungal genotypes as well as with environmental conditions. The influence of AMF on N cycling is just being discovered. This short review examines areas of knowledge related to the nature of the mycorrhizosphere, AMF-microbe interactions, and N and P mobilization in the root zone. The role AMF could play in the root zone in N and P dynamics is presented. The spatial organization of roots and hyphae in soil suggests that AMF may enhance the reabsorption of nutrients lost through root exudation. These fungi influence soil microorganisms and, hence, they may influence biochemical reactions in soil including mineralization of organic matter and nitrification. AMF seem to improve the capacity of their host plant to use organic sources of P and N. AMF might improve the ability of plants to compete with saprotrophs for the uptake of P and N. The impact from this latter effect of AMF could exceed that stemming from their possible direct use of amino-acid-N, their production of phosphatase enzymes and possibly of organic anions. Better competitive ability of mycorrhizal plants under conditions of low soil P and N levels could reduce saprotrophic populations and, if this occurs, regulate soil organic matter turnover rate. The management of biological soil resources, in truly sustainable cropping systems, may be the largest challenge in crop production. Il est difficile d'établir avec précision l'incidence des mycorhizes à arbuscules (MA) sur les processus du sol, parce qu'elle varie, d'une part, avec la plante et le génotype des champignons, mais aussi avec les conditions environnementales. On commence à peine à décou-vrir l'influence des MA sur le cycle de l'azote. Ce court article fait le point sur ce qu'on sait de la nature de la myco-rhizosphère, des interactions entre les MA et les microorganismes et de la mobilisation du N et du P dans la rhizosphère. Suit une description du rôle que les MA pourraient jouer dans la dynamique du N et du P au niveau de la rhizosphère. L'organisation spatiale des racines et des hyphes dans le sol laisse croire que les MA pourraient faciliter la réabsorption des éléments nutritifs que les racines perdent par exsudation. Les champignons influent sur la microflore tellurique, donc pourraient modifier les réactions biochimiques dans le sol, y compris la minéral-isation et la nitrification de la matière organique. Les MA semblent accroître la capacité de la plante hôte à exploiter les sources de P et de N organiques. Ils pourraient aussi amener les plantes à mieux concurrencer les saprophytes pour l'absorption du P et du N. Cette dernière propriété pourrait avoir une plus grande incidence que celle issue de l'utilisation directe éventuelle du N des acides aminés, de la synthèse de phosphatase et peut-être de la libération d'anions or...

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Section: Arbuscular Mycorrhizal Fungi Are Present and Influential In mentioning

confidence: 99%

Impact of arbuscular mycorrhizal fungi on N and P cycling in the root zone

Hamel¹

2004

Can. J. Soil. Sci.

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“…The volume of soil exploited by plant roots can be greatly increased by the external mycelium of arbuscular mycorrhizal (AM) fungi (Bolan, 1991;Marschner and Romheld, 1998), and enhanced absorption of relatively immobile micronutrients such as Zn, Cu and Fe from deficient soils by AM plants has been well documented (Faber et al, 1990;Kothari et al, 1991;Li et al, 1991;Liu et al, 2000). On the other hand, under conditions of high available soil Zn and Cu, the concentrations of these trace elements in shoots have been reported to be lower in mycorrhizal than in non-mycorrhizal plants (Dueck et al, 1986;Leyval et al, 1991;Liu et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, under conditions of high available soil Zn and Cu, the concentrations of these trace elements in shoots have been reported to be lower in mycorrhizal than in non-mycorrhizal plants (Dueck et al, 1986;Leyval et al, 1991;Liu et al, 2000). Reduced concentrations of micronutrients in mycorrhizal plants are sometimes attributed to a dilution effect linked to an increase in plant dry matter (DM) yield (Nielsen and Jensen, 1983).…”

Section: Introductionmentioning

confidence: 99%

The role of arbuscular mycorrhiza in zinc uptake by red clover growing in a calcareous soil spiked with various quantities of zinc

et al. 2003

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“…Mycorrhizae increases survival of plants in harsh conditions by reducing the stress associated with the availability of water and some nutrients (phosphorus), increasing their resistance to pathogens and modifying the structure of the roots and the medium, in which they grow (Liu et al 2000, Turnau et al 2002, Miransari 2011, MalachowskaJutsz et al 2010. Research studies have shown that arbuscular mycorrhizae (AM) fungi are able to alleviate the stress of heavy metals and petroleum substances (Tam 1995, Davies et al 2001, Turnau and Mesjasz--Przybyłowicz 2003.…”

Section: Mycorrhizaementioning

confidence: 99%

Mechanisms of stress avoidance and tolerance by plants used in phytoremediation of heavy metals

Jutsz¹,

Gnida²

2015

Archives of Environmental Protection

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Heavy metal pollution of soil is a signifi cant environmental problem and has a negative impact on human health and agriculture. Phytoremediation can be an alternative environmental treatment technology, using the natural ability of plants to take up and accumulate pollutants or transform them. Proper development of plants in contaminated areas (e.g. heavy metals) requires them to generate the appropriate protective mechanisms against the toxic effects of these pollutants. This paper presents an overview of the physiological mechanisms of stress avoidance and tolerance by plants used in phytoremediation of heavy metals.Unauthenticated Download Date | 5/11/18 8:01 PM

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Acquisition of Cu, Zn, Mn and Fe by mycorrhizal maize ( Zea mays L.) grown in soil at different P and micronutrient levels

Cited by 312 publications

References 31 publications

Impact of arbuscular mycorrhizal fungi on N and P cycling in the root zone

Impact of arbuscular mycorrhizal fungi on N and P cycling in the root zone

The role of arbuscular mycorrhiza in zinc uptake by red clover growing in a calcareous soil spiked with various quantities of zinc

Mechanisms of stress avoidance and tolerance by plants used in phytoremediation of heavy metals

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