Abstract:
:The discovery of arbuscules in Aglaophyton major, an Early Devonian land plant, provides unequivocal evidence that mycorrhizae were established >400 million years ago. Nonseptate hyphac and arbuscules occur in a specialized meristematic region of the cortex that continually provided new cells for fungal infection. Arbuscules are morphologically identical to those of living arbuscular mycorrhizae in consisting of a basal trunk and repeatedly branched bush-like tuft within the plant cell. Although interpretations of the evolution of mycorrhizal mutualisms continue to be speculative, the existence of arbuscules in the Early Devonian indicates that nutrient transfer mutualism may have been in existence when plants invaded the land.
journal_name
Proc Natl Acad Sci U S Aauthors
Remy W,Taylor TN,Hass H,Kerp Hdoi
10.1073/pnas.91.25.11841keywords:
subject
Has Abstractpub_date
1994-12-06 00:00:00pages
11841-3issue
25eissn
0027-8424issn
1091-6490journal_volume
91pub_type
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journal_title:Proceedings of the National Academy of Sciences of the United States of America
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