Arbuscular mycorrhizal fungi native from a Mediterranean saline area enhance maize tolerance to salinity through improved ion homeostasis.
Identifieur interne : 001D10 ( Main/Corpus ); précédent : 001D09; suivant : 001D11Arbuscular mycorrhizal fungi native from a Mediterranean saline area enhance maize tolerance to salinity through improved ion homeostasis.
Auteurs : Beatriz Estrada ; Ricardo Aroca ; Frans J M. Maathuis ; José Miguel Barea ; Juan Manuel Ruiz-LozanoSource :
- Plant, cell & environment [ 1365-3040 ] ; 2013.
English descriptors
- KwdEn :
- Adaptation, Physiological (MeSH), Biomass (MeSH), Chlorides (metabolism), Gene Expression Regulation, Plant (MeSH), Homeostasis (MeSH), Ion Transport (genetics), Ions (metabolism), Mediterranean Region (MeSH), Minerals (metabolism), Mycorrhizae (physiology), Plant Proteins (genetics), Plant Proteins (metabolism), Plant Shoots (growth & development), Plant Shoots (metabolism), Potassium (metabolism), Proline (metabolism), Salinity (MeSH), Sodium (metabolism), Spain (MeSH), Symbiosis (MeSH), Zea mays (genetics), Zea mays (microbiology), Zea mays (physiology).
- MESH :
- chemical , genetics : Plant Proteins.
- chemical , metabolism : Chlorides, Ions, Minerals, Plant Proteins, Potassium, Proline, Sodium.
- geographic : Mediterranean Region, Spain.
- genetics : Ion Transport, Zea mays.
- growth & development : Plant Shoots.
- metabolism : Plant Shoots.
- microbiology : Zea mays.
- physiology : Mycorrhizae, Zea mays.
- Adaptation, Physiological, Biomass, Gene Expression Regulation, Plant, Homeostasis, Salinity, Symbiosis.
Abstract
Soil salinity restricts plant growth and productivity. Na(+) represents the major ion causing toxicity because it competes with K(+) for binding sites at the plasma membrane. Inoculation with arbuscular mycorrhizal fungi (AMF) can alleviate salt stress in the host plant through several mechanisms. These may include ion selection during the fungal uptake of nutrients from the soil or during transfer to the host plant. AM benefits could be enhanced when native AMF isolates are used. Thus, we investigated whether native AMF isolated from an area with problems of salinity and desertification can help maize plants to overcome the negative effects of salinity stress better than non-AM plants or plants inoculated with non-native AMF. Results showed that plants inoculated with two out the three native AMF had the highest shoot dry biomass at all salinity levels. Plants inoculated with the three native AMF showed significant increase of K(+) and reduced Na(+) accumulation as compared to non-mycorrhizal plants, concomitantly with higher K(+) /Na(+) ratios in their tissues. For the first time, these effects have been correlated with regulation of ZmAKT2, ZmSOS1 and ZmSKOR genes expression in the roots of maize, contributing to K(+) and Na(+) homeostasis in plants colonized by native AMF.
DOI: 10.1111/pce.12082
PubMed: 23421735
Links to Exploration step
pubmed:23421735Le document en format XML
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<author><name sortKey="Estrada, Beatriz" sort="Estrada, Beatriz" uniqKey="Estrada B" first="Beatriz" last="Estrada">Beatriz Estrada</name>
<affiliation><nlm:affiliation>Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda 1, 18008, Granada, Spain.</nlm:affiliation>
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<author><name sortKey="Aroca, Ricardo" sort="Aroca, Ricardo" uniqKey="Aroca R" first="Ricardo" last="Aroca">Ricardo Aroca</name>
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<author><name sortKey="Maathuis, Frans J M" sort="Maathuis, Frans J M" uniqKey="Maathuis F" first="Frans J M" last="Maathuis">Frans J M. Maathuis</name>
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<author><name sortKey="Barea, Jose Miguel" sort="Barea, Jose Miguel" uniqKey="Barea J" first="José Miguel" last="Barea">José Miguel Barea</name>
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<author><name sortKey="Ruiz Lozano, Juan Manuel" sort="Ruiz Lozano, Juan Manuel" uniqKey="Ruiz Lozano J" first="Juan Manuel" last="Ruiz-Lozano">Juan Manuel Ruiz-Lozano</name>
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<author><name sortKey="Barea, Jose Miguel" sort="Barea, Jose Miguel" uniqKey="Barea J" first="José Miguel" last="Barea">José Miguel Barea</name>
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<author><name sortKey="Ruiz Lozano, Juan Manuel" sort="Ruiz Lozano, Juan Manuel" uniqKey="Ruiz Lozano J" first="Juan Manuel" last="Ruiz-Lozano">Juan Manuel Ruiz-Lozano</name>
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<series><title level="j">Plant, cell & environment</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adaptation, Physiological (MeSH)</term>
<term>Biomass (MeSH)</term>
<term>Chlorides (metabolism)</term>
<term>Gene Expression Regulation, Plant (MeSH)</term>
<term>Homeostasis (MeSH)</term>
<term>Ion Transport (genetics)</term>
<term>Ions (metabolism)</term>
<term>Mediterranean Region (MeSH)</term>
<term>Minerals (metabolism)</term>
<term>Mycorrhizae (physiology)</term>
<term>Plant Proteins (genetics)</term>
<term>Plant Proteins (metabolism)</term>
<term>Plant Shoots (growth & development)</term>
<term>Plant Shoots (metabolism)</term>
<term>Potassium (metabolism)</term>
<term>Proline (metabolism)</term>
<term>Salinity (MeSH)</term>
<term>Sodium (metabolism)</term>
<term>Spain (MeSH)</term>
<term>Symbiosis (MeSH)</term>
<term>Zea mays (genetics)</term>
<term>Zea mays (microbiology)</term>
<term>Zea mays (physiology)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Plant Proteins</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Chlorides</term>
<term>Ions</term>
<term>Minerals</term>
<term>Plant Proteins</term>
<term>Potassium</term>
<term>Proline</term>
<term>Sodium</term>
</keywords>
<keywords scheme="MESH" type="geographic" xml:lang="en"><term>Mediterranean Region</term>
<term>Spain</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Ion Transport</term>
<term>Zea mays</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Shoots</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Shoots</term>
</keywords>
<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Zea mays</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mycorrhizae</term>
<term>Zea mays</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Adaptation, Physiological</term>
<term>Biomass</term>
<term>Gene Expression Regulation, Plant</term>
<term>Homeostasis</term>
<term>Salinity</term>
<term>Symbiosis</term>
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<front><div type="abstract" xml:lang="en">Soil salinity restricts plant growth and productivity. Na(+) represents the major ion causing toxicity because it competes with K(+) for binding sites at the plasma membrane. Inoculation with arbuscular mycorrhizal fungi (AMF) can alleviate salt stress in the host plant through several mechanisms. These may include ion selection during the fungal uptake of nutrients from the soil or during transfer to the host plant. AM benefits could be enhanced when native AMF isolates are used. Thus, we investigated whether native AMF isolated from an area with problems of salinity and desertification can help maize plants to overcome the negative effects of salinity stress better than non-AM plants or plants inoculated with non-native AMF. Results showed that plants inoculated with two out the three native AMF had the highest shoot dry biomass at all salinity levels. Plants inoculated with the three native AMF showed significant increase of K(+) and reduced Na(+) accumulation as compared to non-mycorrhizal plants, concomitantly with higher K(+) /Na(+) ratios in their tissues. For the first time, these effects have been correlated with regulation of ZmAKT2, ZmSOS1 and ZmSKOR genes expression in the roots of maize, contributing to K(+) and Na(+) homeostasis in plants colonized by native AMF.</div>
</front>
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<ArticleTitle>Arbuscular mycorrhizal fungi native from a Mediterranean saline area enhance maize tolerance to salinity through improved ion homeostasis.</ArticleTitle>
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<Abstract><AbstractText>Soil salinity restricts plant growth and productivity. Na(+) represents the major ion causing toxicity because it competes with K(+) for binding sites at the plasma membrane. Inoculation with arbuscular mycorrhizal fungi (AMF) can alleviate salt stress in the host plant through several mechanisms. These may include ion selection during the fungal uptake of nutrients from the soil or during transfer to the host plant. AM benefits could be enhanced when native AMF isolates are used. Thus, we investigated whether native AMF isolated from an area with problems of salinity and desertification can help maize plants to overcome the negative effects of salinity stress better than non-AM plants or plants inoculated with non-native AMF. Results showed that plants inoculated with two out the three native AMF had the highest shoot dry biomass at all salinity levels. Plants inoculated with the three native AMF showed significant increase of K(+) and reduced Na(+) accumulation as compared to non-mycorrhizal plants, concomitantly with higher K(+) /Na(+) ratios in their tissues. For the first time, these effects have been correlated with regulation of ZmAKT2, ZmSOS1 and ZmSKOR genes expression in the roots of maize, contributing to K(+) and Na(+) homeostasis in plants colonized by native AMF.</AbstractText>
<CopyrightInformation>© 2013 John Wiley & Sons Ltd.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Estrada</LastName>
<ForeName>Beatriz</ForeName>
<Initials>B</Initials>
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