期刊
EUROPEAN JOURNAL OF PHYCOLOGY
卷 47, 期 4, 页码 469-479出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09670262.2012.741713
关键词
Bacillariophyta; Black Sea; Haslea; ITS; marennine-like pigment; micro-Raman spectroscopy; new species; rbcL; taxonomy
资金
- EGIDE (France)
A new species of raphid pennate diatom producing a blue pigment, Haslea karadagensis Davidovich, Gastineau & Mouget, sp. nov., was recently isolated from the Crimean coast of the Black Sea (Ukraine). This organism is very similar to the well-known Haslea ostrearia, the first described 'blue' diatom, which produces marennine, the pigment involved in the greening of oysters. The Ukrainian diatom, H. karadagensis, differs slightly from H. ostrearia in the structure of its frustule, and the two organisms are unable to interbreed. Two molecular markers, rbcL and the ITS1-5.8S-ITS2 sequences, showed 2% and > 50% differences, respectively, between the two species. UV-visible spectrophotometry and in vivo confocal micro-Raman spectroscopy were used to compare the pigment of H. karadagensis with marennine. Both pigments showed absorption bands in the UV and red regions, but the positions of the maxima differ between the pigments. Significant differences were observed by micro-Raman spectroscopy in the 1000-1700 cm(-1) wavenumber range, revealing that the pigments are different molecules. Haslea karadagensis is the first example of a new 'blue' diatom and produces a novel blue pigment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据