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Mycothalli of the hepatic Barbilophozia hatcheri in Antarctica: distribution and identities of mycobionts

Newsham, K.K.; Goodall-Copestake, W.P.; Ochyra, R.; Vana, J.. 2014 Mycothalli of the hepatic Barbilophozia hatcheri in Antarctica: distribution and identities of mycobionts. Fungal Ecology, 11. 91-99. 10.1016/j.funeco.2014.05.001

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Abstract/Summary

Forty-four herbarium specimens of the hepatic Barbilophozia hatcheri, collected from across the entire range of the species in Antarctica (54–68 °S), were examined for fungal colonisation. Mycothalli, consisting of hyaline hyphae in rhizoids or hyphal coils in rhizoid bases and stem medullary cells, were present in 42 specimens. The frequencies of mycothalli declined at higher latitudes and were associated positively with annual air temperatures. In contrast, the frequency of dark septate hyphae on stems increased at higher latitudes. Sequencing of ITS regions of fungal rRNA genes amplified from B. hatcheri from 54 °S, 61 °S and 68 °S indicated that Cladophialophora species colonised plants at higher latitudes, but that most fungi had >99 % homology with members of Sebacinales clade B, with best matches to mycobionts of B. lycopodioides, Lophoziopsis excisa and Protolophozia crispata. We propose the use of herbarium specimens of mycothalli as proxies for climate change in Antarctica.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.funeco.2014.05.001
Programmes: BAS Programmes > Polar Science for Planet Earth (2009 - ) > Ecosystems
ISSN: 1754-5048
Additional Keywords: Antarctica, Barbilophozia hatcheri, climate change, herbarium, latitudinal transect, Mycothalli, Sebacinales clade B
NORA Subject Terms: Botany
Date made live: 18 Jun 2014 10:49 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/503331

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