Linking Dolerotheca-like prepollen organs with Alethopteris pseudograndinioides foliage and assessing chemical properties of in situ prepollen grains: Implications for reconstructing Pennsylvanian-age alethopterid seed ferns

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00228745%3A_____%2F17%3AN0000001" target="_blank" >RIV/00228745:_____/17:N0000001 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0166516217301945" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0166516217301945</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.coal.2017.08.004" target="_blank" >10.1016/j.coal.2017.08.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Linking Dolerotheca-like prepollen organs with Alethopteris pseudograndinioides foliage and assessing chemical properties of in situ prepollen grains: Implications for reconstructing Pennsylvanian-age alethopterid seed ferns

Popis výsledku v původním jazyce

Detached and coalified prepollen organs with huge monolete grains are reported for the first time from the Canadian Sydney Coalfield of Pennsylvanian age. Besides regarding these organs as Dolerotheca-like, the putative question is which medullosalean seed fern produced these organs? We investigated for the first time the physicochemistry of the prepollen to determine characteristic behavior under oxidative conditions, reporting results from solid- and liquid states infrared spectroscopy, liquid 1H magnetic resonance, high precision liquid and pyrolytic-gas chromatography, and mass/charge ratios. The organs were tripartite, campanulate (bell-shaped) with lobate margins ca. 20 mm in diameter and ca. 30 mm long, and contained hundreds of elongate sporangia that were up to 8 mm long and filled with huge up to 833 μm long but probably juvenile Monoletes prepollen. These grains were covered by an acellular sporangial layer, which in turn, was covered by a cuticle bearing the imprint of near-isodiametric cells. The principal evidence for linking the Dolerotheca-like structure to foliar Alethopteris pseudograndinioides is shared occurrences of papillate cyclocytic stomata and trichomes, and the physical association of the alethopterid foliage and the prepollen organs. The physicochemical results point to diagenetic influence on the surface morphology and taxonomic parameters, refractory nature of the prepollen (as with extant pollen), and their aliphatic characteristics that are different from the aromatic extant pollen.

Název v anglickém jazyce

Linking Dolerotheca-like prepollen organs with Alethopteris pseudograndinioides foliage and assessing chemical properties of in situ prepollen grains: Implications for reconstructing Pennsylvanian-age alethopterid seed ferns

Popis výsledku anglicky

Detached and coalified prepollen organs with huge monolete grains are reported for the first time from the Canadian Sydney Coalfield of Pennsylvanian age. Besides regarding these organs as Dolerotheca-like, the putative question is which medullosalean seed fern produced these organs? We investigated for the first time the physicochemistry of the prepollen to determine characteristic behavior under oxidative conditions, reporting results from solid- and liquid states infrared spectroscopy, liquid 1H magnetic resonance, high precision liquid and pyrolytic-gas chromatography, and mass/charge ratios. The organs were tripartite, campanulate (bell-shaped) with lobate margins ca. 20 mm in diameter and ca. 30 mm long, and contained hundreds of elongate sporangia that were up to 8 mm long and filled with huge up to 833 μm long but probably juvenile Monoletes prepollen. These grains were covered by an acellular sporangial layer, which in turn, was covered by a cuticle bearing the imprint of near-isodiametric cells. The principal evidence for linking the Dolerotheca-like structure to foliar Alethopteris pseudograndinioides is shared occurrences of papillate cyclocytic stomata and trichomes, and the physical association of the alethopterid foliage and the prepollen organs. The physicochemical results point to diagenetic influence on the surface morphology and taxonomic parameters, refractory nature of the prepollen (as with extant pollen), and their aliphatic characteristics that are different from the aromatic extant pollen.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10506 - Paleontology

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Coal Geology

ISSN

0166-5162

e-ISSN

—

Svazek periodika

Neuveden

Číslo periodika v rámci svazku

183

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

65-77

Kód UT WoS článku

000417777100006

EID výsledku v databázi Scopus

—