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The mycobiomes of vegetative organs of the dominant Mediterranean seagrass Posidonia oceanica (Posidoniaceae, Alismatales)
Soperová, Beáta ; Vohník, Martin (advisor) ; Kohout, Petr (referee)
Posidonia oceanica is a dominant seagrass of the Mediterranean Sea and its mycobiome has been increasingly studied, especially in recent years. Dozens of fungi associated with roots, rhizomes or leaves have been already described, but studies on the mycobiome of leaf sheaths are completely absent. One of the root-associated mycobionts is Posidoniomyces atricolor, which has not yet been isolated from any other organ. This thesis attempted to describe the mycobiome of vegetative organs of P. oceanica using two different methodological approaches - microscopic observation and molecular analyses. Microscopic observation confirmed the presence of fungal colonization in all vegetative organs except leaves. The conclusions from the microscopic part were subsequently verified by isolating and identifying several different endomycobionts, including P. atricolor, which has been also isolated for the first time from rhizomes and leaf sheaths. Leaf sheath mycobiome was then described for the first time ever.

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