ArticlePlant physiology2005
Suppression of allene oxide cyclase in hairy roots of Medicago truncatula reduces jasmonate levels and the degree of mycorrhization with Glomus intraradices.
Article in Plant physiology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.
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Who cites it
54 citing papers in PubMed.
- Arbuscular mycorrhizal fungi enhance rose resistance to Lymantria dispar through JA-associated regulation of flavonoid biosynthesis.Mycorrhiza · 2026Article
- JA Signaling Inhibitor JAZ Is Involved in Regulation of AM Symbiosis with Cassava, Including Symbiosis Establishment and Cassava Growth.Journal of fungi (Basel, Switzerland) · 2025Article
- Intricate phytohormonal orchestration mediates mycorrhizal symbiosis and stress tolerance.Mycorrhiza · 2025Review
- Untargeted metabolomics and functional analyses reveal that the secondary metabolite quinic acid associates with Angelica sinensis flowering.BMC plant biology · 2025Article
- Roles of arbuscular mycorrhizal fungi in plant growth and disease management for sustainable agriculture.Frontiers in microbiology · 2025Review
- Water stress protection by the arbuscular mycorrhizal fungus Rhizoglomus irregulare involves physiological and hormonal responses in an organ-specific manner.Physiologia plantarum · 2023Article
- Identification and Characterization of Jasmonic Acid Biosynthetic Genes inInternational journal of molecular sciences · 2022Article
- Roles ofMicroorganisms · 2022Review
- Ingenious characterization and assessment of lentil germplasm collection to aphidFrontiers in plant science · 2022Article
- Dual Roles ofFrontiers in plant science · 2022Article
- ScAOC1, an allene oxide cyclase gene, confers defense response to biotic and abiotic stresses in sugarcane.Plant cell reports · 2020Article
- Article
- Medicago TERPENE SYNTHASE 10 Is Involved in Defense Against an Oomycete Root Pathogen.Plant physiology · 2019Article
- Identifying Temporally Regulated Root Nodulation Biomarkers Using Time Series Gene Co-Expression Network Analysis.Frontiers in plant science · 2019Article
- Unraveling the Initial Plant Hormone Signaling, Metabolic Mechanisms and Plant Defense Triggering the Endomycorrhizal Symbiosis Behavior.Frontiers in plant science · 2018Review
- Allene oxide synthase, allene oxide cyclase and jasmonic acid levels in Lotus japonicus nodules.PloS one · 2018Article
- Enhanced Secondary- and Hormone Metabolism in Leaves of Arbuscular MycorrhizalPlant physiology · 2017Article
- Genotype-Dependent Interaction of Lentil Lines withFrontiers in plant science · 2017Article
- Enhanced hyphal growth of arbuscular mycorrhizae by root exudates derived from high R/FR treated Lotus japonicus.Plant signaling & behavior · 2016Article
- Arbuscular mycorrhizal symbiosis and methyl jasmonate avoid the inhibition of root hydraulic conductivity caused by drought.Mycorrhiza · 2016Article
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5 authors.
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Abstract
During the symbiotic interaction between Medicago truncatula and the arbuscular mycorrhizal (AM) fungus Glomus intraradices, an endogenous increase in jasmonic acid (JA) occurs. Two full-length cDNAs coding for the JA-biosynthetic enzyme allene oxide cyclase (AOC) from M. truncatula, designated as MtAOC1 and MtAOC2, were cloned and characterized. The AOC protein was localized in plastids and found to occur constitutively in all vascular tissues of M. truncatula. In leaves and roots, MtAOCs are expressed upon JA application. Enhanced expression was also observed during mycorrhization with G. intraradices. A partial suppression of MtAOC expression was achieved in roots following transformation with Agrobacterium rhizogenes harboring the MtAOC1 cDNA in the antisense direction under control of the cauliflower mosaic virus 35S promoter. In comparison to samples transformed with 35SuidA, roots with suppressed MtAOC1 expression exhibited lower JA levels and a remarkable delay in the process of colonization with G. intraradices. Both the mycorrhization rate, quantified by fungal rRNA, and the arbuscule formation, analyzed by the expression level of the AM-specific gene MtPT4, were affected. Staining of fungal material in roots with suppressed MtAOC1 revealed a decreased number of arbuscules, but these did not exhibit an altered structure. Our results indicate a crucial role for JA in the establishment of AM symbiosis.
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