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RiCRN1, a crinkler effector from the arbuscular mycorrhizal fungus rhizophagus irregularis, functions in arbuscule development

Voß, S. 1; Betz, R. 1; Heidt, S. 1; Corradi, N.; Requena, N. 1
1 Karlsruher Institut für Technologie (KIT)


Arbuscular mycorrhizal (AM) symbiosis is one of the most prominent and beneficial plant–microbe interactions that facilitates mineral nutrition and confers tolerance to biotic and abiotic stresses. AM fungi colonize the root cortex and develop specialized structures called arbuscules where the nutrient exchange takes place. Arbuscule development is a highly controlled and coordinated process requiring the involvement of many plant proteins recruited at that interface. In contrast, much less is known about the fungal proteins involved in this process. Here, we have identified an AM fungal effector that participates in this developmental step of the symbiosis. RiCRN1 is a crinkler (CRN) effector that belongs to a subfamily of secreted CRN proteins from R. irregularis. CRNs have been so far only functionally characterized in pathogenic microbes and shown to participate in processes controlling plant cell death and immunity. RiCRN1 accumulates during symbiosis establishment parallel to MtPT4, the gene coding for an arbuscule-specific phosphate transporter. Expression in Nicotiana benthamiana leaves and in Medicago truncatula roots suggest that RiCRN1 is not involved in cell death processes. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000086531
Veröffentlicht am 22.10.2018
DOI: 10.3389/fmicb.2018.02068
Zitationen: 52
Zitationen: 63
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Chemie und Biowissenschaften – Botanisches Institut und Botanischer Garten (BOTANIK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 1664-302X
KITopen-ID: 1000086531
Erschienen in Frontiers in microbiology
Verlag Frontiers Media SA
Band 9
Seiten Article: 2068
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter effectors; crinkler (CRN) proteins; arbuscular mycorrhiza; plant symbioses; arbuscule
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