Počet záznamů: 1
Anatomically and morphologically unique dark septate endophytic association in the roots of the Mediterranean endemic seagrass Posidonia oceanica
- 1.
SYSNO ASEP 0449614 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Anatomically and morphologically unique dark septate endophytic association in the roots of the Mediterranean endemic seagrass Posidonia oceanica Tvůrce(i) Vohník, Martin (BU-J) RID, ORCID
Borovec, Ondřej (BU-J)
Župan, I. (HR)
Vondrášek, D. (CZ)
Petrtýl, M. (CZ)
Sudová, Radka (BU-J) RID, ORCIDCelkový počet autorů 6 Zdroj.dok. Mycorrhiza. - : Springer - ISSN 0940-6360
Roč. 25, č. 8 (2015), s. 663-672Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova seagrasses ; fungal symbioses ; Mediterranean Sea Vědní obor RIV EF - Botanika CEP GAP504/10/0781 GA ČR - Grantová agentura ČR Institucionální podpora BU-J - RVO:67985939 UT WOS 000363268400007 DOI 10.1007/s00572-015-0642-7 Anotace Roots of terrestrial plants host a wide spectrum of soil fungi that form various parasitic, neutral and mutualistic associations. A similar trend is evident in freshwater aquatic plants and plants inhabiting salt marshes or mangroves. Marine vascular plants (seagrasses), by contrast, seem to lack specific root-fungus symbioses. We examined roots of two Mediterranean seagrasses, Posidonia oceanica and Cymodocea nodosa, in the northwestern Mediterranean Sea for fungal colonization using light and scanning and transmission electron microscopy. We found that P. oceanica, but not C. nodosa, is regularly associated with melanized septate hyphae in a manner resembling colonization by the ubiquitous dark septate endophytes (DSE) in roots of most terrestrial plants. P. oceanica roots were found to be colonized by sparse dematiaceous running hyphae as well as dense parenchymatous nets/hyphal sheaths on the root surface, intracellular melanized microsclerotia, and occasionally also intra- and intercellular hyphae. The colonization was most prominent in the thick-walled hypodermis of the thinnest healthy-looking roots, and the mycobiont seemed to colonize both living and dead host cells. Dark septate hyphae infrequently occurred also inside rhizodermal cells, but never colonized vascular tissues. The biological significance of this overlooked marine symbiosis remains unknown, but its morphology, extent, distribution across the NW Mediterranean Sea and absence in C. nodosa indicate an intriguing relationship between the dominant Mediterranean seagrass and its dark septate root mycobionts. Pracoviště Botanický ústav Kontakt Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Rok sběru 2016
Počet záznamů: 1