Enhanced Secondary- and Hormone Metabolism in Leaves of Arbuscular Mycorrhizal Medicago truncatula.
Adolfsson, L
Nziengui, H
Abreu, IN
Šimura, J
Beebo, A
Herdean, A
Aboalizadeh, J
Široká, J
Moritz, T
Novák, O
Ljung, K
Schoefs, B
Spetea, C
- Publisher:
- Oxford University Press
- Publication Type:
- Journal Article
- Citation:
- Plant Physiology, 2017, 175, (1), pp. 392-411
- Issue Date:
- 2017-09
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plphys_v175_1_392.pdf | 1.6 MB | Adobe PDF |
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Full metadata record
Field | Value | Language |
---|---|---|
dc.contributor.author | Adolfsson, L | |
dc.contributor.author | Nziengui, H | |
dc.contributor.author | Abreu, IN | |
dc.contributor.author | Šimura, J | |
dc.contributor.author | Beebo, A | |
dc.contributor.author |
Herdean, A |
|
dc.contributor.author | Aboalizadeh, J | |
dc.contributor.author | Široká, J | |
dc.contributor.author | Moritz, T | |
dc.contributor.author | Novák, O | |
dc.contributor.author | Ljung, K | |
dc.contributor.author | Schoefs, B | |
dc.contributor.author | Spetea, C | |
dc.date.accessioned | 2022-07-08T03:26:50Z | |
dc.date.available | 2017-07-07 | |
dc.date.available | 2022-07-08T03:26:50Z | |
dc.date.issued | 2017-09 | |
dc.identifier.citation | Plant Physiology, 2017, 175, (1), pp. 392-411 | |
dc.identifier.issn | 0032-0889 | |
dc.identifier.issn | 1532-2548 | |
dc.identifier.uri | http://hdl.handle.net/10453/158751 | |
dc.description.abstract | Arbuscular mycorrhizas (AM) are the most common symbiotic associations between a plant's root compartment and fungi. They provide nutritional benefit (mostly inorganic phosphate [Pi]), leading to improved growth, and nonnutritional benefits, including defense responses to environmental cues throughout the host plant, which, in return, delivers carbohydrates to the symbiont. However, how transcriptional and metabolic changes occurring in leaves of AM plants differ from those induced by Pi fertilization is poorly understood. We investigated systemic changes in the leaves of mycorrhized Medicago truncatula in conditions with no improved Pi status and compared them with those induced by high-Pi treatment in nonmycorrhized plants. Microarray-based genome-wide profiling indicated up-regulation by mycorrhization of genes involved in flavonoid, terpenoid, jasmonic acid (JA), and abscisic acid (ABA) biosynthesis as well as enhanced expression of MYC2, the master regulator of JA-dependent responses. Accordingly, total anthocyanins and flavonoids increased, and most flavonoid species were enriched in AM leaves. Both the AM and Pi treatments corepressed iron homeostasis genes, resulting in lower levels of available iron in leaves. In addition, higher levels of cytokinins were found in leaves of AM- and Pi-treated plants, whereas the level of ABA was increased specifically in AM leaves. Foliar treatment of nonmycorrhized plants with either ABA or JA induced the up-regulation of MYC2, but only JA also induced the up-regulation of flavonoid and terpenoid biosynthetic genes. Based on these results, we propose that mycorrhization and Pi fertilization share cytokinin-mediated improved shoot growth, whereas enhanced ABA biosynthesis and JA-regulated flavonoid and terpenoid biosynthesis in leaves are specific to mycorrhization. | |
dc.format | Print-Electronic | |
dc.language | eng | |
dc.publisher | Oxford University Press | |
dc.relation.ispartof | Plant Physiology | |
dc.relation.isbasedon | 10.1104/pp.16.01509 | |
dc.rights | info:eu-repo/semantics/closedAccess | |
dc.subject | 06 Biological Sciences, 07 Agricultural and Veterinary Sciences | |
dc.subject.classification | Plant Biology & Botany | |
dc.subject.mesh | Abscisic Acid | |
dc.subject.mesh | Cyclopentanes | |
dc.subject.mesh | Flavonoids | |
dc.subject.mesh | Gene Expression Regulation, Plant | |
dc.subject.mesh | Glomeromycota | |
dc.subject.mesh | Medicago truncatula | |
dc.subject.mesh | Mycorrhizae | |
dc.subject.mesh | Oxylipins | |
dc.subject.mesh | Phosphates | |
dc.subject.mesh | Plant Growth Regulators | |
dc.subject.mesh | Plant Leaves | |
dc.subject.mesh | Plant Proteins | |
dc.subject.mesh | Secondary Metabolism | |
dc.subject.mesh | Symbiosis | |
dc.subject.mesh | Terpenes | |
dc.subject.mesh | Up-Regulation | |
dc.subject.mesh | Abscisic Acid | |
dc.subject.mesh | Cyclopentanes | |
dc.subject.mesh | Flavonoids | |
dc.subject.mesh | Gene Expression Regulation, Plant | |
dc.subject.mesh | Glomeromycota | |
dc.subject.mesh | Medicago truncatula | |
dc.subject.mesh | Mycorrhizae | |
dc.subject.mesh | Oxylipins | |
dc.subject.mesh | Phosphates | |
dc.subject.mesh | Plant Growth Regulators | |
dc.subject.mesh | Plant Leaves | |
dc.subject.mesh | Plant Proteins | |
dc.subject.mesh | Secondary Metabolism | |
dc.subject.mesh | Symbiosis | |
dc.subject.mesh | Terpenes | |
dc.subject.mesh | Up-Regulation | |
dc.subject.mesh | Mycorrhizae | |
dc.subject.mesh | Medicago truncatula | |
dc.subject.mesh | Plant Leaves | |
dc.subject.mesh | Phosphates | |
dc.subject.mesh | Abscisic Acid | |
dc.subject.mesh | Cyclopentanes | |
dc.subject.mesh | Terpenes | |
dc.subject.mesh | Flavonoids | |
dc.subject.mesh | Plant Growth Regulators | |
dc.subject.mesh | Plant Proteins | |
dc.subject.mesh | Symbiosis | |
dc.subject.mesh | Gene Expression Regulation, Plant | |
dc.subject.mesh | Up-Regulation | |
dc.subject.mesh | Oxylipins | |
dc.subject.mesh | Glomeromycota | |
dc.subject.mesh | Secondary Metabolism | |
dc.title | Enhanced Secondary- and Hormone Metabolism in Leaves of Arbuscular Mycorrhizal Medicago truncatula. | |
dc.type | Journal Article | |
utslib.citation.volume | 175 | |
utslib.location.activity | United States | |
utslib.for | 06 Biological Sciences | |
utslib.for | 07 Agricultural and Veterinary Sciences | |
pubs.organisational-group | /University of Technology Sydney | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Science | |
pubs.organisational-group | /University of Technology Sydney/Strength - C3 - Climate Change Cluster | |
utslib.copyright.status | closed_access | * |
pubs.consider-herdc | false | |
dc.date.updated | 2022-07-08T03:26:48Z | |
pubs.issue | 1 | |
pubs.publication-status | Published | |
pubs.volume | 175 | |
utslib.citation.issue | 1 |
Abstract:
Arbuscular mycorrhizas (AM) are the most common symbiotic associations between a plant's root compartment and fungi. They provide nutritional benefit (mostly inorganic phosphate [Pi]), leading to improved growth, and nonnutritional benefits, including defense responses to environmental cues throughout the host plant, which, in return, delivers carbohydrates to the symbiont. However, how transcriptional and metabolic changes occurring in leaves of AM plants differ from those induced by Pi fertilization is poorly understood. We investigated systemic changes in the leaves of mycorrhized Medicago truncatula in conditions with no improved Pi status and compared them with those induced by high-Pi treatment in nonmycorrhized plants. Microarray-based genome-wide profiling indicated up-regulation by mycorrhization of genes involved in flavonoid, terpenoid, jasmonic acid (JA), and abscisic acid (ABA) biosynthesis as well as enhanced expression of MYC2, the master regulator of JA-dependent responses. Accordingly, total anthocyanins and flavonoids increased, and most flavonoid species were enriched in AM leaves. Both the AM and Pi treatments corepressed iron homeostasis genes, resulting in lower levels of available iron in leaves. In addition, higher levels of cytokinins were found in leaves of AM- and Pi-treated plants, whereas the level of ABA was increased specifically in AM leaves. Foliar treatment of nonmycorrhized plants with either ABA or JA induced the up-regulation of MYC2, but only JA also induced the up-regulation of flavonoid and terpenoid biosynthetic genes. Based on these results, we propose that mycorrhization and Pi fertilization share cytokinin-mediated improved shoot growth, whereas enhanced ABA biosynthesis and JA-regulated flavonoid and terpenoid biosynthesis in leaves are specific to mycorrhization.
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