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Arbuscular mycorrhiza symbiosis induces a major transcriptional reprogramming of the potato SWEET sugar transporter family

Manck-Götzenberger, Jasmin; Requena, Natalia

Abstract (englisch):
Biotrophic microbes feeding on plants must obtain carbon from their hosts without killing the cells. The symbiotic Arbuscular mycorrhizal (AM) fungi colonizing plant roots do so by inducing major transcriptional changes in the host that ultimately also reprogram the whole carbon partitioning of the plant. AM fungi obtain carbohydrates from the root cortex apoplast, in particular from the periarbuscular space that surrounds arbuscules. However, the mechanisms by which cortical cells export sugars into the apoplast for fungal nutrition are unknown. Recently a novel type of sugar transporter, the SWEET, able to perform not only uptake but also efflux from cells was identified. Plant SWEETs have been shown to be involved in the feeding of pathogenic microbes and are, therefore, good candidates to play a similar role in symbiotic associations. Here we have carried out the first phylogenetic and expression analyses of the potato SWEET family and investigated its role during mycorrhiza symbiosis. The potato genome contains 35 SWEETs that cluster into the same four clades defined in Arabidopsis. Colonization of potato roots by the AM fungus Rhizophagus irregularis imposes major transcriptional rewiring of the SWEET family involving, only in roots, changes in 22 of the 35 members. ... mehr

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Volltext §
DOI: 10.5445/IR/1000053970
DOI: 10.3389/fpls.2016.00487
Zitationen: 53
Web of Science
Zitationen: 45
Zugehörige Institution(en) am KIT Botanisches Institut und Botanischer Garten (BOTANIK)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 1664-462X
KITopen-ID: 1000053970
Erschienen in Frontiers in Plant Science
Band 7
Heft SI April
Seiten Art.Nr.: 487
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte SWEET transporters, potato, Arbuscular mycorrhiza, root, sugar transport, plants, symbiosis
Nachgewiesen in Scopus
Web of Science
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