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Life history bias in endophyte infection of the Antarctic rhodophyte, Iridaea cordata by Kathryn M. Schoenrock; Charles D. Amsler; James B. McClintock; Bill J. Baker is a Earth and Planetary Sciences article available to read on EtoBox.

What is Life history bias in endophyte infection of the Antarctic rhodophyte, Iridaea cordata about?

## Abstract Endophytic organisms are known to have varied effects on their host organism in terrestrial and marine environments. In previous studies on marine algae, these symbioses range from innocuous to pathogenic depending on the host and endophyte species. The present study further assessed a pathogenic relationship between filamentous algal endophytes and a red algal host from the western Antarctic Peninsula. We analyzed endophyte presence (appearance of filamentous thalli) in the three life history stages of __Iridaea cordata__ and potential impacts on fertility in the fertilized female gametophytes (carposporophytes) and tetrasporophytes. We found that endophytes proliferate throughout significantly more thallus area in tetrasporophyte and unfertilized gametophyte hosts than in carposporophyte hosts, but there was no correlation between endophyte cover and fertility in these individuals. This study also provides a demographic analysis of __I. cordata__ populations surrounding Palmer Station, Antarctica, showing that these populations are haploid dominated (∼78% of individuals). The differential presence of filamentous algal endophytes indicates that endophyte pathogenicity

Who reads Life history bias in endophyte infection of the Antarctic rhodophyte, Iridaea cordata?

Author

Kathryn M. Schoenrock; Charles D. Amsler; James B. McClintock; Bill J. Baker

Publisher

Walter de Gruyter GmbH

Published

2015

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)