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dc.contributor.authorDecombeix, Anne-Laure
dc.contributor.authorTaylor, Edith L.
dc.contributor.authorTaylor, Thomas N.
dc.date.accessioned2014-05-19T20:08:42Z
dc.date.available2014-05-19T20:08:42Z
dc.date.issued2010
dc.identifier.citationDecombeix, A., Taylor, E., and Taylor, T. 2010. Epicormic Shoots in a Permian Gymnosperm from Antarctica. International Journal of Plant Sciences 171(7): 772-782.
dc.identifier.urihttp://hdl.handle.net/1808/13679
dc.descriptionThis is the publisher's version. Shared with permission, it is also available electronically from: http://dx.doi.org/10.1086/654849
dc.description.abstractTwo anatomically preserved gymnosperm trunks with clusters of epicormic shoots are described from the Late Permian of Antarctica. The best-preserved trunk is 14 cm long. It has a small circular parenchymatous pith and 9 cm of secondary xylem that contains at least 50 growth rings. The second specimen is slightly smaller (11 3 8 cm) and has 20 growth rings. Both specimens have pycnoxylic wood and produced more than 50 small shoots in a delimited zone on the surface of the trunk. Shoots have a wide parenchymatous pith that may be solid to septate with endarch primary xylem forming 8–10 sympodia and a small amount of secondary xylem similar to that of the parent trunk. The shoots branch and increase in number toward the outside of the trunk. Evidence based on anatomical comparisons and association at the site indicates that the specimens probably represent trunks of some glossopterid, the dominant group of seed ferns during the Permian in Gondwana. This is the first report of clusters of epicormic shoots in a Paleozoic gymnosperm. The ability to produce a large number of young shoots that were capable of developing into new branches indicates that these high-latitude trees possessed an architectural plasticity that allowed them to respond quickly to short- or longterm environmental stress.
dc.language.isoen
dc.publisherUniversity of Chicago Press
dc.subjectSprouting
dc.subjectGymnosperm
dc.subjectLate permian
dc.subjectAntarctica
dc.subjectGondwana
dc.titleEpicormic Schoots in a Permian Gymnosperm from Antarctica
dc.typeArticle
kusw.kuauthorTaylor, Edith L.
kusw.kuauthorTaylor, Thomas N.
kusw.kudepartmentEcology and Evolutionary Biology
kusw.oastatusfullparticipation
dc.identifier.doi10.1086/654849
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item meets KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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