TY - JOUR
T1 - Mycothalli of the hepatic Barbilophozia hatcheri in Antarctica
T2 - distribution and identities of mycobionts
AU - Newsham, K.K.
AU - Goodall-Copestake, W.P.
AU - Ochyra, R.
AU - Váňa, J.
N1 - Crown copyright © 2014 Published by Elsevier Ltd. All rights reserved.
Output produced while W.P. Goodall-Copestake was employed by British Antarctic Survey
PY - 2014/10/30
Y1 - 2014/10/30
N2 - 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.
AB - 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.
U2 - 10.1016/j.funeco.2014.05.001
DO - 10.1016/j.funeco.2014.05.001
M3 - Article
SN - 1754-5048
VL - 11
SP - 91
EP - 99
JO - Fungal Ecology
JF - Fungal Ecology
ER -