CAROTENOID COMPOSITIONS OFCLADOPHORABALLS (AEGAGROPILA LINNAEI) AND SOME MEMBERS OF THE CLADOPHORALES (ULVOPHYCEAE, CHLOROPHYTA): THEIR TAXONOMIC AND EVOLUTIONARY IMPLICATION
| العنوان: | CAROTENOID COMPOSITIONS OFCLADOPHORABALLS (AEGAGROPILA LINNAEI) AND SOME MEMBERS OF THE CLADOPHORALES (ULVOPHYCEAE, CHLOROPHYTA): THEIR TAXONOMIC AND EVOLUTIONARY IMPLICATION |
|---|---|
| المؤلفون: | Isao Inouye, Isamu Wakana, Kunihiko Ueda, Kazuyuki Miyaji, Yukie Yoshii, Takeaki Hanyuda, Shogo Arai |
| المصدر: | Journal of Phycology. 40:1170-1177 |
| بيانات النشر: | Wiley, 2004. |
| سنة النشر: | 2004 |
| مصطلحات موضوعية: | chemistry.chemical_classification, biology, Phylogenetic tree, Ulvophyceae, Cladophorales, food and beverages, Subclade, Plant Science, Chlorophyta, Aquatic Science, biology.organism_classification, 18S ribosomal RNA, chemistry, Botany, Clade, Carotenoid |
| الوصف: | Photosynthetic pigments were analyzed by HPLC for 27 samples of the Cladophorales (Ulvophyceae, Chlorophyta). The carotenoid compositions of the examined algae were classified into three types based on the final compound of biosynthesis of the α-carotene branch: lutein type, characterized by containing lutein as a major carotenoid and lacking loroxanthin and siphonaxanthin; loroxanthin type, characterized by containing loroxanthin and lacking siphonaxanthin; and siphonaxanthin type, characterized by containing siphonaxanthin. We constructed molecular phylogenetic tree of the species examined in the present study using 18S rRNA gene sequences and mapped the carotenoid types of the species onto the tree. The molecular phylogenetic analysis divided the Cladophorales into two major clades, clade 1 and Aegagropila-clade (clade 2), and divided clade 1 into subclade 1-1 and subclade 1-2. All the examined species positioned in the Aegagropila-clade and those of the subclade 1-1 belonged to the loroxanthin type, whereas both lutein type and siphonaxanthin type appeared only in the subclade 1-2. The clades delineated by molecular phylogenetic analysis were congruent with distribution of the carotenoid types, indicating that the carotenoid types are of taxonomic significance in the Cladophorales. Considering the distribution pattern of these carotenoid types and minimum state changes in the Cladophorales, we concluded that the loroxanthin type was the primitive (plesiomorphic) state and the siphonaxanthin type and lutein type appeared in the subclade 1-2 as advanced (apomorphic) state within this order and suggested that the cladophoralean siphonaxanthin type would have been secondarily acquired. |
| تدمد: | 1529-8817 0022-3646 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::aff81d053b6dac2e8f9e92da965fcbab https://doi.org/10.1111/j.1529-8817.2004.03210.x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........aff81d053b6dac2e8f9e92da965fcbab |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15298817 00223646 |
|---|