Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America
Studies of laboratory cultures of Chordaria linearis (Hooker et Harvey) Cotton from southernmost South America revealed that this species has an obligate sexual life history in which a macroscopic sporophyte alternates with a monoecious microscopic gametophyte. Sexual reproduction is isogamous and u...
Published in: | Journal of Phycology |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1992
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/42213/ https://oceanrep.geomar.de/id/eprint/42213/1/J.%20Phycol.%2028,%20678-683%20%281992%29.pdf https://doi.org/10.1111/j.0022-3646.1992.00678.x |
id |
ftoceanrep:oai:oceanrep.geomar.de:42213 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:42213 2023-05-15T15:04:12+02:00 Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America Peters, Akira F. 1992 text https://oceanrep.geomar.de/id/eprint/42213/ https://oceanrep.geomar.de/id/eprint/42213/1/J.%20Phycol.%2028,%20678-683%20%281992%29.pdf https://doi.org/10.1111/j.0022-3646.1992.00678.x en eng Wiley https://oceanrep.geomar.de/id/eprint/42213/1/J.%20Phycol.%2028,%20678-683%20%281992%29.pdf Peters, A. F. (1992) Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America. Journal of Phycology, 28 (5). pp. 678-683. DOI 10.1111/j.0022-3646.1992.00678.x <https://doi.org/10.1111/j.0022-3646.1992.00678.x>. doi:10.1111/j.0022-3646.1992.00678.x info:eu-repo/semantics/restrictedAccess Article PeerReviewed 1992 ftoceanrep https://doi.org/10.1111/j.0022-3646.1992.00678.x 2023-04-07T15:38:48Z Studies of laboratory cultures of Chordaria linearis (Hooker et Harvey) Cotton from southernmost South America revealed that this species has an obligate sexual life history in which a macroscopic sporophyte alternates with a monoecious microscopic gametophyte. Sexual reproduction is isogamous and under photoperiodic control. Gametes are produced only in short days, whereas in long days, asexual zoospores are formed that recycle the gametophyte generation. Unfused gametes develop into gametophytes, and sporophytes originate only from zygotes. Unlike other sexual members of the Chordariales, gametes of C. linearis have a reduced stigma and do not show phototaxis. They are released at the beginning of the night, not in the morning. In nature, C. linearis seems to be regularly infected by a dictyosiphonalean epiphyte resembling the rare arctic species Trachynema groenlandicum (Lund) Pedersen. The epiphyte is responsible for previous contradictory results obtained in laboratory cultures of C. linearis. This is the first record of Trachynema in the southern hemisphere. Article in Journal/Newspaper Arctic Tierra del Fuego OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Hooker ENVELOPE(-62.050,-62.050,-63.283,-63.283) Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) Journal of Phycology 28 5 678 683 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Studies of laboratory cultures of Chordaria linearis (Hooker et Harvey) Cotton from southernmost South America revealed that this species has an obligate sexual life history in which a macroscopic sporophyte alternates with a monoecious microscopic gametophyte. Sexual reproduction is isogamous and under photoperiodic control. Gametes are produced only in short days, whereas in long days, asexual zoospores are formed that recycle the gametophyte generation. Unfused gametes develop into gametophytes, and sporophytes originate only from zygotes. Unlike other sexual members of the Chordariales, gametes of C. linearis have a reduced stigma and do not show phototaxis. They are released at the beginning of the night, not in the morning. In nature, C. linearis seems to be regularly infected by a dictyosiphonalean epiphyte resembling the rare arctic species Trachynema groenlandicum (Lund) Pedersen. The epiphyte is responsible for previous contradictory results obtained in laboratory cultures of C. linearis. This is the first record of Trachynema in the southern hemisphere. |
format |
Article in Journal/Newspaper |
author |
Peters, Akira F. |
spellingShingle |
Peters, Akira F. Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America |
author_facet |
Peters, Akira F. |
author_sort |
Peters, Akira F. |
title |
Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America |
title_short |
Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America |
title_full |
Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America |
title_fullStr |
Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America |
title_full_unstemmed |
Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America |
title_sort |
culture studies on the life history of chordaria linearis (phaeophyceae) from tierra del fuego, south america |
publisher |
Wiley |
publishDate |
1992 |
url |
https://oceanrep.geomar.de/id/eprint/42213/ https://oceanrep.geomar.de/id/eprint/42213/1/J.%20Phycol.%2028,%20678-683%20%281992%29.pdf https://doi.org/10.1111/j.0022-3646.1992.00678.x |
long_lat |
ENVELOPE(-62.050,-62.050,-63.283,-63.283) ENVELOPE(140.013,140.013,-66.668,-66.668) |
geographic |
Arctic Hooker Pedersen |
geographic_facet |
Arctic Hooker Pedersen |
genre |
Arctic Tierra del Fuego |
genre_facet |
Arctic Tierra del Fuego |
op_relation |
https://oceanrep.geomar.de/id/eprint/42213/1/J.%20Phycol.%2028,%20678-683%20%281992%29.pdf Peters, A. F. (1992) Culture studies on the life history of Chordaria Linearis (Phaeophyceae) from Tierra del Fuego, South America. Journal of Phycology, 28 (5). pp. 678-683. DOI 10.1111/j.0022-3646.1992.00678.x <https://doi.org/10.1111/j.0022-3646.1992.00678.x>. doi:10.1111/j.0022-3646.1992.00678.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.0022-3646.1992.00678.x |
container_title |
Journal of Phycology |
container_volume |
28 |
container_issue |
5 |
container_start_page |
678 |
op_container_end_page |
683 |
_version_ |
1766336004646502400 |