0489467 - GLÚ 2019 RIV GB eng J - Článek v odborném periodiku
Libertín, M. - Kvaček, J. - Bek, Jiří - Žárský, V. - Štorch, Petr
Sporophytes of polysporangiate land plants from the early Silurian period may have been photosynthetically autonomous.
Nature Plants. Roč. 4, 30 April 2018 (2018), s. 269-271. ISSN 2055-026X. E-ISSN 2055-0278
Institucionální podpora: RVO:67985831
Klíčová slova: earliest vascular plants * in situ spores * Silurian * polysporangiate plants
Obor OECD: Paleontology
Impakt faktor: 13.297, rok: 2018

The colonization of land by vascular plants is an extremely important phase in Earth’s life history. This key evolutionary process is thought to have begun during the Middle Cambrian¹ period and culminated in the Silurian/Early Devonian period (interval about 509–393 million years ago (Ma)), and is documented primarily by microfossils (that is, by dispersed spores, phytodebris including fragments of algae, tissues, sporangia and cuticles), tubes and rare megafossils². A newly recognized fossil cooksonioid plant with in situ spores from the Barrandian area, Czech Republic, is of the highest importance because it represents extremely ancient megafossil evidence of land plant diploid generation: sporophytes (~432 Ma). The robust size of this plant places it among the largest known early polysporangiate land plants and it is probable that it attained adequate size for both aeration and effective photosynthetic competence. This would mean not only that sporophytes were photosynthetically autonomous but also that the they might have been ablable to sustain a relatively gametophyte-independent existence.
Trvalý link: http://hdl.handle.net/11104/0283878