Differential modulation of host plant delta13C and delta18O by native and nonnative arbuscular mycorrhizal fungi in a semiarid environment.
Identifieur interne : 003330 ( Main/Exploration ); précédent : 003329; suivant : 003331Differential modulation of host plant delta13C and delta18O by native and nonnative arbuscular mycorrhizal fungi in a semiarid environment.
Auteurs : J I Querejeta [Espagne] ; M F Allen ; F. Caravaca ; A. RoldánSource :
- The New phytologist [ 0028-646X ] ; 2006.
Descripteurs français
- KwdFr :
- Carbone (métabolisme), Climat désertique (MeSH), Frangula (microbiologie), Isotopes de l'oxygène (MeSH), Isotopes du carbone (MeSH), Mycorhizes (métabolisme), Olea (microbiologie), Oxygène (métabolisme), Plant (microbiologie), Plant (métabolisme), Pousses de plante (microbiologie), Pousses de plante (métabolisme), Racines de plante (microbiologie), Racines de plante (métabolisme), Écosystème (MeSH).
- MESH :
- microbiologie : Frangula, Olea, Plant, Pousses de plante, Racines de plante.
- métabolisme : Carbone, Mycorhizes, Oxygène, Plant, Pousses de plante, Racines de plante.
- Climat désertique, Isotopes de l'oxygène, Isotopes du carbone, Écosystème.
English descriptors
- KwdEn :
- Carbon (metabolism), Carbon Isotopes (MeSH), Desert Climate (MeSH), Ecosystem (MeSH), Mycorrhizae (metabolism), Olea (microbiology), Oxygen (metabolism), Oxygen Isotopes (MeSH), Plant Roots (metabolism), Plant Roots (microbiology), Plant Shoots (metabolism), Plant Shoots (microbiology), Rhamnus (microbiology), Seedlings (metabolism), Seedlings (microbiology).
- MESH :
- chemical , metabolism : Carbon, Oxygen.
- chemical : Carbon Isotopes, Oxygen Isotopes.
- metabolism : Mycorrhizae, Plant Roots, Plant Shoots, Seedlings.
- microbiology : Olea, Plant Roots, Plant Shoots, Rhamnus, Seedlings.
- Desert Climate, Ecosystem.
Abstract
Native, drought-adapted arbuscular mycorrhizal fungi (AMF) often improve host-plant performance to a greater extent than nonnative AMF in dry environments. However, little is known about the physiological basis for this differential plant response. Seedlings of Olea europaea and Rhamnus lycioides were inoculated with either a mixture of eight native Glomus species or with the nonnative Glomus claroideum before field transplanting in a semiarid area. Inoculation with native AMF produced the greatest improvement in nutrient and water status as well as in long-term growth for both Olea and Rhamnus. Foliar delta18O measurements indicated that native AMF enhanced stomatal conductance to a greater extent than nonnative AMF in Olea and Rhamnus.delta13C data showed that intrinsic water-use efficiency in Olea was differentially stimulated by native AMF compared with nonnative AMF. Our results suggest that modulation of leaf gas exchange by native, drought-adapted AMF is critical to the long-term performance of host plants in semiarid environments. delta18O can provide a time-integrated measure of the effect of mycorrhizal infection on host-plant water relations.
DOI: 10.1111/j.1469-8137.2005.01599.x
PubMed: 16411940
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon (metabolism)</term>
<term>Carbon Isotopes (MeSH)</term>
<term>Desert Climate (MeSH)</term>
<term>Ecosystem (MeSH)</term>
<term>Mycorrhizae (metabolism)</term>
<term>Olea (microbiology)</term>
<term>Oxygen (metabolism)</term>
<term>Oxygen Isotopes (MeSH)</term>
<term>Plant Roots (metabolism)</term>
<term>Plant Roots (microbiology)</term>
<term>Plant Shoots (metabolism)</term>
<term>Plant Shoots (microbiology)</term>
<term>Rhamnus (microbiology)</term>
<term>Seedlings (metabolism)</term>
<term>Seedlings (microbiology)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Carbone (métabolisme)</term>
<term>Climat désertique (MeSH)</term>
<term>Frangula (microbiologie)</term>
<term>Isotopes de l'oxygène (MeSH)</term>
<term>Isotopes du carbone (MeSH)</term>
<term>Mycorhizes (métabolisme)</term>
<term>Olea (microbiologie)</term>
<term>Oxygène (métabolisme)</term>
<term>Plant (microbiologie)</term>
<term>Plant (métabolisme)</term>
<term>Pousses de plante (microbiologie)</term>
<term>Pousses de plante (métabolisme)</term>
<term>Racines de plante (microbiologie)</term>
<term>Racines de plante (métabolisme)</term>
<term>Écosystème (MeSH)</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term>
<term>Oxygen</term>
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<term>Oxygen Isotopes</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mycorrhizae</term>
<term>Plant Roots</term>
<term>Plant Shoots</term>
<term>Seedlings</term>
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<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Frangula</term>
<term>Olea</term>
<term>Plant</term>
<term>Pousses de plante</term>
<term>Racines de plante</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Olea</term>
<term>Plant Roots</term>
<term>Plant Shoots</term>
<term>Rhamnus</term>
<term>Seedlings</term>
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<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Carbone</term>
<term>Mycorhizes</term>
<term>Oxygène</term>
<term>Plant</term>
<term>Pousses de plante</term>
<term>Racines de plante</term>
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<term>Ecosystem</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Climat désertique</term>
<term>Isotopes de l'oxygène</term>
<term>Isotopes du carbone</term>
<term>Écosystème</term>
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<front><div type="abstract" xml:lang="en">Native, drought-adapted arbuscular mycorrhizal fungi (AMF) often improve host-plant performance to a greater extent than nonnative AMF in dry environments. However, little is known about the physiological basis for this differential plant response. Seedlings of Olea europaea and Rhamnus lycioides were inoculated with either a mixture of eight native Glomus species or with the nonnative Glomus claroideum before field transplanting in a semiarid area. Inoculation with native AMF produced the greatest improvement in nutrient and water status as well as in long-term growth for both Olea and Rhamnus. Foliar delta18O measurements indicated that native AMF enhanced stomatal conductance to a greater extent than nonnative AMF in Olea and Rhamnus.delta13C data showed that intrinsic water-use efficiency in Olea was differentially stimulated by native AMF compared with nonnative AMF. Our results suggest that modulation of leaf gas exchange by native, drought-adapted AMF is critical to the long-term performance of host plants in semiarid environments. delta18O can provide a time-integrated measure of the effect of mycorrhizal infection on host-plant water relations.</div>
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<Abstract><AbstractText>Native, drought-adapted arbuscular mycorrhizal fungi (AMF) often improve host-plant performance to a greater extent than nonnative AMF in dry environments. However, little is known about the physiological basis for this differential plant response. Seedlings of Olea europaea and Rhamnus lycioides were inoculated with either a mixture of eight native Glomus species or with the nonnative Glomus claroideum before field transplanting in a semiarid area. Inoculation with native AMF produced the greatest improvement in nutrient and water status as well as in long-term growth for both Olea and Rhamnus. Foliar delta18O measurements indicated that native AMF enhanced stomatal conductance to a greater extent than nonnative AMF in Olea and Rhamnus.delta13C data showed that intrinsic water-use efficiency in Olea was differentially stimulated by native AMF compared with nonnative AMF. Our results suggest that modulation of leaf gas exchange by native, drought-adapted AMF is critical to the long-term performance of host plants in semiarid environments. delta18O can provide a time-integrated measure of the effect of mycorrhizal infection on host-plant water relations.</AbstractText>
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