Journal
NEW PHYTOLOGIST
Volume 165, Issue 2, Pages 567-579Publisher
WILEY
DOI: 10.1111/j.1469-8137.2004.01251.x
Keywords
arbuscular mycorrhiza (AM); Glomus phylotypes; liverwort; Marchantia foliacea; ribosomal DNA
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Microscopic evidence suggests that fungi forming endosymbioses with liverworts in the Marchantiales are arbuscular mycorrhizal (AM) fungi from the Glomeromycota. Polymerase chain reaction amplification of ribosomal sequences confirmed that endophytes of the New Zealand liverwort, Marchantia foliacea, were members of the genus Glomus. Endophytes from two Glomus rDNA phylotypes were repeatedly isolated from geographically separated liverwort samples. Multiple phylotypes were present in the same liverwort patch. The colonizing Glomus species exhibited substantial internal transcribed spacer sequence variation within phylotypes. This work suggests that certain liverwort species may serve as a model for studying DNA sequence variation in colonizing AM phylotypes and specificity in AM-host relationships.
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