Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study
The morphological and ultrastructural characteristics of the vegetative thallus have been studied in Iridaea cordata from Antarctica. The chemical composition of the iridescent cuticle and the distribution of sulphated and neutral polysaccharides in the extracellular regions have been analyzed by cy...
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Walter de Gruyter · Berlin · New York
1996
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ftunivpadovairis:oai:www.research.unipd.it:11577/2467289 2023-09-05T13:12:30+02:00 Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study FOLTRAN A MARANZANA G SCARABEL L TALARICO L RASCIO, NICOLETTA ANDREOLI, CARLO Foltran, A Maranzana, G Rascio, Nicoletta Scarabel, L Talarico, L Andreoli, Carlo 1996 STAMPA http://hdl.handle.net/11577/2467289 eng eng Walter de Gruyter · Berlin · New York volume:39 firstpage:533 lastpage:541 numberofpages:9 journal:BOTANICA MARINA http://hdl.handle.net/11577/2467289 info:eu-repo/semantics/article 1996 ftunivpadovairis 2023-08-21T19:51:39Z The morphological and ultrastructural characteristics of the vegetative thallus have been studied in Iridaea cordata from Antarctica. The chemical composition of the iridescent cuticle and the distribution of sulphated and neutral polysaccharides in the extracellular regions have been analyzed by cytochemical tests. The ultrastructural organization and pigment composition of the photosynthetic apparatus have been compared in thalli of I. cordata collected during austral summer from ice-covered and ice-free sea waters. The analyses showed that, with respect to those growing under ice, the thalli growing at the higher irradiance in ice-free water had chloroplasts with a reduced thylakoid system and a lower content of both chlorophyll and carotenoids. They also contain phycobiliproteins, which, however, were not assembled in well structured phycobilisomes. Article in Journal/Newspaper Antarc* Antarctica Padua Research Archive (IRIS - Università degli Studi di Padova) Austral |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
description |
The morphological and ultrastructural characteristics of the vegetative thallus have been studied in Iridaea cordata from Antarctica. The chemical composition of the iridescent cuticle and the distribution of sulphated and neutral polysaccharides in the extracellular regions have been analyzed by cytochemical tests. The ultrastructural organization and pigment composition of the photosynthetic apparatus have been compared in thalli of I. cordata collected during austral summer from ice-covered and ice-free sea waters. The analyses showed that, with respect to those growing under ice, the thalli growing at the higher irradiance in ice-free water had chloroplasts with a reduced thylakoid system and a lower content of both chlorophyll and carotenoids. They also contain phycobiliproteins, which, however, were not assembled in well structured phycobilisomes. |
author2 |
Foltran, A Maranzana, G Rascio, Nicoletta Scarabel, L Talarico, L Andreoli, Carlo |
format |
Article in Journal/Newspaper |
author |
FOLTRAN A MARANZANA G SCARABEL L TALARICO L RASCIO, NICOLETTA ANDREOLI, CARLO |
spellingShingle |
FOLTRAN A MARANZANA G SCARABEL L TALARICO L RASCIO, NICOLETTA ANDREOLI, CARLO Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study |
author_facet |
FOLTRAN A MARANZANA G SCARABEL L TALARICO L RASCIO, NICOLETTA ANDREOLI, CARLO |
author_sort |
FOLTRAN A |
title |
Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study |
title_short |
Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study |
title_full |
Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study |
title_fullStr |
Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study |
title_full_unstemmed |
Iridaea cordata from Antarctica: an ultrastructural, cytochemical and pigment study |
title_sort |
iridaea cordata from antarctica: an ultrastructural, cytochemical and pigment study |
publisher |
Walter de Gruyter · Berlin · New York |
publishDate |
1996 |
url |
http://hdl.handle.net/11577/2467289 |
geographic |
Austral |
geographic_facet |
Austral |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
volume:39 firstpage:533 lastpage:541 numberofpages:9 journal:BOTANICA MARINA http://hdl.handle.net/11577/2467289 |
_version_ |
1776200550592806912 |