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Difference inStriga-susceptibility is reflected in strigolactone secretion profile, but not in compatibility and host preference in arbuscular mycorrhizal symbiosis in two maize cultivars

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Title: Difference inStriga-susceptibility is reflected in strigolactone secretion profile, but not in compatibility and host preference in arbuscular mycorrhizal symbiosis in two maize cultivars
Authors: Yoneyama, Kaori Browse this author
Arakawa, Ryota Browse this author
Ishimoto, Keiko Browse this author
Kim, Hyun Il Browse this author
Kisugi, Takaya Browse this author
Xie, Xiaonan Browse this author
Nomura, Takahito Browse this author
Kanampiu, Fred Browse this author
Yokota, Takao Browse this author
Ezawa, Tatsuhiro Browse this author →KAKEN DB
Yoneyama, Koichi Browse this author
Keywords: arbuscular mycorrhizal (AM) fungi
community composition
compatibility,
Striga spp.
strigolactone
susceptibility,
Zea mays (maize)
Issue Date: May-2015
Publisher: Wiley-Blackwell
Journal Title: New Phytologist
Volume: 206
Issue: 3
Start Page: 983
End Page: 989
Publisher DOI: 10.1111/nph.13375
Abstract: ・Strigolactones released from plant roots trigger both seed germination of parasitic weeds such as Striga spp. and hyphal branching of the symbionts arbuscular mycorrhizal (AM) fungi. Generally, strigolactone composition in exudates is quantitatively and qualitatively different among plants, which may be involved in susceptibility and host specificity in the parasite-plant interactions. We hypothesized that difference in strigolactone composition would have a significant impact on compatibility and host specificity/preference in AM symbiosis. ・Strigolactones in root exudates of Striga-susceptible (Pioneer 3253) and -resistant (KST 94) maize (Zea mays) cultivars were characterized by LC–MS/MS combined with germination assay using Striga hermonthica seeds. Levels of colonization and community compositions of AM fungi in the two cultivars were investigated in field and glasshouse experiments. ・5-Deoxystrigol was exuded exclusively by the susceptible cultivar, while the resistant cultivar mainly exuded sorgomol. Despite the distinctive difference in strigolactone composition, the levels of AM colonization and the community compositions were not different between the cultivars. ・The present study demonstrated that the difference in strigolactone composition has no appreciable impact on AM symbiosis, at least in the two maize cultivars, and further suggests that the traits involved in Striga-resistance are not necessarily accompanied by reduction in compatibility to AM fungi.
Rights: The definitive version is available at www.blackwellsynergy.com
Type: article (author version)
URI: http://hdl.handle.net/2115/58488
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 江澤 辰広

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