Silicon in sporoderms of micro- and megaspores of Isoetes echinospora Durieu registered by EDS and EELS

Svetlana Polevova; Andrey Moiseenko

doi:10.1007/s00709-022-01791-w

Silicon in sporoderms of micro- and megaspores of Isoetes echinospora Durieu registered by EDS and EELS

Protoplasma. 2023 Mar;260(2):663-667. doi: 10.1007/s00709-022-01791-w. Epub 2022 Jul 12.

Authors

Svetlana Polevova¹, Andrey Moiseenko²

Affiliations

¹ Biological Faculty, Lomonosov Moscow State University, Moscow, Russia. spolevova@gmail.com.
² Biological Faculty, Lomonosov Moscow State University, Moscow, Russia.

PMID: 35819547
DOI: 10.1007/s00709-022-01791-w

Abstract

The present study reveals silica in sporoderms of micro- and megaspores of the modern quillwort Isoetes echinospora Durieu and homologizes layers of the sporoderm in spores of this plant. Here, the presence of silica in sporoderms of microspores has been documented for the first time, and observations of megaspore sporoderms were used to test various methods, such as energy dispersive (EDS) and electron energy loss (EELS) spectroscopies. The results elucidate the occurrence of silicon in the quillworts and will influence on the interpretation of their modern and fossil sporoderms.

Keywords: EDS; EELS; Isoetes echinospora; Megaspores; Microspores; Siliceous covering; Sporoderm.

MeSH terms

Animals
Eels
Electrons*
Plants
Silicon Dioxide
Silicon*

Substances

Silicon
Silicon Dioxide