Oospore dimensions and wall ornamentation patterns in Swedish charophytes
The ultrastructural features of oospore wall ornamentation patterns revealed by scanning electron microscopy are important taxonomic characters of the Charales. The present study shows inter‐and intrapecific variations in 19 species of the genera Chara, Lamprohamnium, Nitella and Tolypella. This is...
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crwiley:10.1111/j.1756-1051.2001.tb01359.x 2024-04-28T08:15:54+00:00 Oospore dimensions and wall ornamentation patterns in Swedish charophytes Ray, Samit Pekkari, Svante Snoeijs, Pauli 2001 http://dx.doi.org/10.1111/j.1756-1051.2001.tb01359.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1756-1051.2001.tb01359.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1756-1051.2001.tb01359.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Nordic Journal of Botany volume 21, issue 2, page 207-224 ISSN 0107-055X 1756-1051 Plant Science Ecology, Evolution, Behavior and Systematics journal-article 2001 crwiley https://doi.org/10.1111/j.1756-1051.2001.tb01359.x 2024-04-02T08:45:42Z The ultrastructural features of oospore wall ornamentation patterns revealed by scanning electron microscopy are important taxonomic characters of the Charales. The present study shows inter‐and intrapecific variations in 19 species of the genera Chara, Lamprohamnium, Nitella and Tolypella. This is the first time that the oospore wall ornamentation of Swedish Charales has been documented in detail. In the studied Chara species the ornamentation within species was variable, and partly overlapping between species, but only between closely related species. In contrast, the Nitella species showed distinct differences in ornamentation patterns between species, although the same patterns can be found in different species. This study presents for the first time SEM images of the species Chara rudis (pustular ornamentation), Nitella opaca (pitted ornamentation) and Nitella wahlbergiana (anastomosing network ornamentation). The ornamentation pattern in the Nordic species TV. wahlbergiana , supports its separation from Nitella mucronata which has a reticulate ornamentation. The relationship between length and width of the oospores is also of taxonomic significance. Nitella and Tolypella oospores are roundish, whereas those of Chara and Lamprothamnium are elongate. The extent to which environmental and genetic factors can affect oospore size and shape within a species are still unknown, but in the present study both ornamentation pattern and size provided evidence for the distinction between Chara globularis and Chara aspera. Some further taxonomic problems in the Charales are discussed in the light of the results of this study. Article in Journal/Newspaper Chara aspera Wiley Online Library Nordic Journal of Botany 21 2 207 224 |
institution |
Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Plant Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Plant Science Ecology, Evolution, Behavior and Systematics Ray, Samit Pekkari, Svante Snoeijs, Pauli Oospore dimensions and wall ornamentation patterns in Swedish charophytes |
topic_facet |
Plant Science Ecology, Evolution, Behavior and Systematics |
description |
The ultrastructural features of oospore wall ornamentation patterns revealed by scanning electron microscopy are important taxonomic characters of the Charales. The present study shows inter‐and intrapecific variations in 19 species of the genera Chara, Lamprohamnium, Nitella and Tolypella. This is the first time that the oospore wall ornamentation of Swedish Charales has been documented in detail. In the studied Chara species the ornamentation within species was variable, and partly overlapping between species, but only between closely related species. In contrast, the Nitella species showed distinct differences in ornamentation patterns between species, although the same patterns can be found in different species. This study presents for the first time SEM images of the species Chara rudis (pustular ornamentation), Nitella opaca (pitted ornamentation) and Nitella wahlbergiana (anastomosing network ornamentation). The ornamentation pattern in the Nordic species TV. wahlbergiana , supports its separation from Nitella mucronata which has a reticulate ornamentation. The relationship between length and width of the oospores is also of taxonomic significance. Nitella and Tolypella oospores are roundish, whereas those of Chara and Lamprothamnium are elongate. The extent to which environmental and genetic factors can affect oospore size and shape within a species are still unknown, but in the present study both ornamentation pattern and size provided evidence for the distinction between Chara globularis and Chara aspera. Some further taxonomic problems in the Charales are discussed in the light of the results of this study. |
format |
Article in Journal/Newspaper |
author |
Ray, Samit Pekkari, Svante Snoeijs, Pauli |
author_facet |
Ray, Samit Pekkari, Svante Snoeijs, Pauli |
author_sort |
Ray, Samit |
title |
Oospore dimensions and wall ornamentation patterns in Swedish charophytes |
title_short |
Oospore dimensions and wall ornamentation patterns in Swedish charophytes |
title_full |
Oospore dimensions and wall ornamentation patterns in Swedish charophytes |
title_fullStr |
Oospore dimensions and wall ornamentation patterns in Swedish charophytes |
title_full_unstemmed |
Oospore dimensions and wall ornamentation patterns in Swedish charophytes |
title_sort |
oospore dimensions and wall ornamentation patterns in swedish charophytes |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1111/j.1756-1051.2001.tb01359.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1756-1051.2001.tb01359.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1756-1051.2001.tb01359.x |
genre |
Chara aspera |
genre_facet |
Chara aspera |
op_source |
Nordic Journal of Botany volume 21, issue 2, page 207-224 ISSN 0107-055X 1756-1051 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1756-1051.2001.tb01359.x |
container_title |
Nordic Journal of Botany |
container_volume |
21 |
container_issue |
2 |
container_start_page |
207 |
op_container_end_page |
224 |
_version_ |
1797581252634607616 |