Chemical alteration of the rhizosphere of the mycorrhizal-colonized wheat root.
Identifieur interne : 003671 ( Main/Corpus ); précédent : 003670; suivant : 003672Chemical alteration of the rhizosphere of the mycorrhizal-colonized wheat root.
Auteurs : Munir J. Mohammad ; W L Pan ; A C KennedySource :
- Mycorrhiza [ 0940-6360 ] ; 2005.
English descriptors
- KwdEn :
- Anion Exchange Resins (MeSH), Biological Availability (MeSH), Ecosystem (MeSH), Hydrogen-Ion Concentration (MeSH), Iodine (metabolism), Iodine (pharmacology), Metals, Heavy (analysis), Metals, Heavy (metabolism), Metals, Heavy (pharmacology), Mycorrhizae (metabolism), Oxidation-Reduction (MeSH), Phosphorus (metabolism), Phosphorus (pharmacology), Plant Roots (microbiology), Plant Shoots (chemistry), Plant Shoots (growth & development), Soil (analysis), Triticum (microbiology), Triticum (physiology).
- MESH :
- chemical , analysis : Metals, Heavy, Soil.
- chemical , metabolism : Iodine, Metals, Heavy, Phosphorus.
- chemical , pharmacology : Iodine, Metals, Heavy, Phosphorus.
- chemical : Anion Exchange Resins.
- chemistry : Plant Shoots.
- growth & development : Plant Shoots.
- metabolism : Mycorrhizae.
- microbiology : Plant Roots, Triticum.
- physiology : Triticum.
- Biological Availability, Ecosystem, Hydrogen-Ion Concentration, Oxidation-Reduction.
Abstract
Plexiglass pot growth chamber experiments were conducted to evaluate the chemical alterations in the rhizosphere of mycorrhizal wheat roots after inoculation with Glomus intraradices [arbuscular mycorrhizal fungus (AMF)]. Exchange resins were used as sinks for nutrients to determine whether the inoculated plant can increase the solubility and the uptake of P and micronutrients. Treatments included: (1) soil (bulk soil); (2) AMF inoculation no P addition (I-P); (3) no inoculation with no P addition (NI-P); (4) AMF inoculation with addition of 50 mg P (kg soil)(-1) (I+P), and (5) no inoculation with addition of 50 mg P (kg soil)(-1) (NI+P). The AMF inoculum was added at a rate of four spores of G. intraradices (g soil)(-1). The exchange resin membranes were inserted vertically 5 cm apart in the middle of Plexiglass pots. Spring wheat (Triticum aestivum cv. Len) was planted in each Plexiglass pot and grown for 2 weeks in a growth chamber where water was maintained at field capacity. Rhizosphere pH and redox potential (Eh), nutrient bioavailability indices and mycorrhizal colonization were determined. Mycorrhizal inoculation increased the colonization more when P was not added, but did not increase the shoot dry weight at either P level. The rhizosphere pH was lower in the inoculated plants compared to the noninoculated plants in the absence of added P, while the Eh did not change. The decrease in pH in the rhizosphere of inoculated plants could be responsible for the increased P and Zn uptake observed with inoculation. In contrast, Mn uptake was decreased by inoculation. The resin-adsorbed P was increased by inoculation, which, along with the bioavailability index data, may indicate that mycorrhizal roots were able to increase the solubility of soil P.
DOI: 10.1007/s00572-004-0327-0
PubMed: 15503187
Links to Exploration step
pubmed:15503187Le document en format XML
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<author><name sortKey="Mohammad, Munir J" sort="Mohammad, Munir J" uniqKey="Mohammad M" first="Munir J" last="Mohammad">Munir J. Mohammad</name>
<affiliation><nlm:affiliation>Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan. mrusan@just.edu.jo</nlm:affiliation>
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<author><name sortKey="Pan, W L" sort="Pan, W L" uniqKey="Pan W" first="W L" last="Pan">W L Pan</name>
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<author><name sortKey="Kennedy, A C" sort="Kennedy, A C" uniqKey="Kennedy A" first="A C" last="Kennedy">A C Kennedy</name>
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<author><name sortKey="Mohammad, Munir J" sort="Mohammad, Munir J" uniqKey="Mohammad M" first="Munir J" last="Mohammad">Munir J. Mohammad</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anion Exchange Resins (MeSH)</term>
<term>Biological Availability (MeSH)</term>
<term>Ecosystem (MeSH)</term>
<term>Hydrogen-Ion Concentration (MeSH)</term>
<term>Iodine (metabolism)</term>
<term>Iodine (pharmacology)</term>
<term>Metals, Heavy (analysis)</term>
<term>Metals, Heavy (metabolism)</term>
<term>Metals, Heavy (pharmacology)</term>
<term>Mycorrhizae (metabolism)</term>
<term>Oxidation-Reduction (MeSH)</term>
<term>Phosphorus (metabolism)</term>
<term>Phosphorus (pharmacology)</term>
<term>Plant Roots (microbiology)</term>
<term>Plant Shoots (chemistry)</term>
<term>Plant Shoots (growth & development)</term>
<term>Soil (analysis)</term>
<term>Triticum (microbiology)</term>
<term>Triticum (physiology)</term>
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<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Metals, Heavy</term>
<term>Soil</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Iodine</term>
<term>Metals, Heavy</term>
<term>Phosphorus</term>
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<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Iodine</term>
<term>Metals, Heavy</term>
<term>Phosphorus</term>
</keywords>
<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Anion Exchange Resins</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Plant Shoots</term>
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<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Shoots</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mycorrhizae</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Roots</term>
<term>Triticum</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Triticum</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Biological Availability</term>
<term>Ecosystem</term>
<term>Hydrogen-Ion Concentration</term>
<term>Oxidation-Reduction</term>
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<front><div type="abstract" xml:lang="en">Plexiglass pot growth chamber experiments were conducted to evaluate the chemical alterations in the rhizosphere of mycorrhizal wheat roots after inoculation with Glomus intraradices [arbuscular mycorrhizal fungus (AMF)]. Exchange resins were used as sinks for nutrients to determine whether the inoculated plant can increase the solubility and the uptake of P and micronutrients. Treatments included: (1) soil (bulk soil); (2) AMF inoculation no P addition (I-P); (3) no inoculation with no P addition (NI-P); (4) AMF inoculation with addition of 50 mg P (kg soil)(-1) (I+P), and (5) no inoculation with addition of 50 mg P (kg soil)(-1) (NI+P). The AMF inoculum was added at a rate of four spores of G. intraradices (g soil)(-1). The exchange resin membranes were inserted vertically 5 cm apart in the middle of Plexiglass pots. Spring wheat (Triticum aestivum cv. Len) was planted in each Plexiglass pot and grown for 2 weeks in a growth chamber where water was maintained at field capacity. Rhizosphere pH and redox potential (Eh), nutrient bioavailability indices and mycorrhizal colonization were determined. Mycorrhizal inoculation increased the colonization more when P was not added, but did not increase the shoot dry weight at either P level. The rhizosphere pH was lower in the inoculated plants compared to the noninoculated plants in the absence of added P, while the Eh did not change. The decrease in pH in the rhizosphere of inoculated plants could be responsible for the increased P and Zn uptake observed with inoculation. In contrast, Mn uptake was decreased by inoculation. The resin-adsorbed P was increased by inoculation, which, along with the bioavailability index data, may indicate that mycorrhizal roots were able to increase the solubility of soil P.</div>
</front>
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<Title>Mycorrhiza</Title>
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<Abstract><AbstractText>Plexiglass pot growth chamber experiments were conducted to evaluate the chemical alterations in the rhizosphere of mycorrhizal wheat roots after inoculation with Glomus intraradices [arbuscular mycorrhizal fungus (AMF)]. Exchange resins were used as sinks for nutrients to determine whether the inoculated plant can increase the solubility and the uptake of P and micronutrients. Treatments included: (1) soil (bulk soil); (2) AMF inoculation no P addition (I-P); (3) no inoculation with no P addition (NI-P); (4) AMF inoculation with addition of 50 mg P (kg soil)(-1) (I+P), and (5) no inoculation with addition of 50 mg P (kg soil)(-1) (NI+P). The AMF inoculum was added at a rate of four spores of G. intraradices (g soil)(-1). The exchange resin membranes were inserted vertically 5 cm apart in the middle of Plexiglass pots. Spring wheat (Triticum aestivum cv. Len) was planted in each Plexiglass pot and grown for 2 weeks in a growth chamber where water was maintained at field capacity. Rhizosphere pH and redox potential (Eh), nutrient bioavailability indices and mycorrhizal colonization were determined. Mycorrhizal inoculation increased the colonization more when P was not added, but did not increase the shoot dry weight at either P level. The rhizosphere pH was lower in the inoculated plants compared to the noninoculated plants in the absence of added P, while the Eh did not change. The decrease in pH in the rhizosphere of inoculated plants could be responsible for the increased P and Zn uptake observed with inoculation. In contrast, Mn uptake was decreased by inoculation. The resin-adsorbed P was increased by inoculation, which, along with the bioavailability index data, may indicate that mycorrhizal roots were able to increase the solubility of soil P.</AbstractText>
</Abstract>
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<ForeName>Munir J</ForeName>
<Initials>MJ</Initials>
<AffiliationInfo><Affiliation>Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid, Jordan. mrusan@just.edu.jo</Affiliation>
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<Author ValidYN="Y"><LastName>Kennedy</LastName>
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<ReferenceList><Reference><Citation>Chemosphere. 2001 Jan;42(2):185-92</Citation>
<ArticleIdList><ArticleId IdType="pubmed">11237297</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Plant Physiol. 1979 Sep;64(3):484-7</Citation>
<ArticleIdList><ArticleId IdType="pubmed">16660993</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Plant Physiol. 1981 Sep;68(3):548-52</Citation>
<ArticleIdList><ArticleId IdType="pubmed">16661955</ArticleId>
</ArticleIdList>
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