化学工程Issue(1)：1-6,6.DOI:10.3969/j.issn.1005-9954.2016.01.001
雨生红球藻内生蓝藻转变为一种新的绿藻
Transition of a prokaryotic endosymbiotic cyanobacterium into a eukaryotic green alga
摘要
Abstract
The endosymbiotic cyanobacterium TDX1 6 released from the green alga Haematococcus pluvialis turned into a special phycocyanin-containing green alga by de novo organelle biogenesis and pigment alteration. Transmission electron microscopic studies revealed that TDX1 6′s thylakoid-less cytoplasm constricted,from which some electron-dense materials were separated.Thereafter,the entire constricted prokaryotic cytoplasm differentiated into a supramaximal chloroplast full of lamellae,pyrenoid and starch granules;while the nucleus and mitochondrion were formed on the basis of the electron dense materials.And lastly,the vacuoles and eukaryotic cytoplasm were developed from the unique chloroplast-derived globular bodies.Accompanying with the formation of organelles,new photosynthetic pigments e.g.,chlorophyll b was synthesized on the newly formed thylakoid,while minor amount of residual phycocyanin remained on the cell membrane.This finding uncovers a link between photosynthetic prokaryotes and eukaryotes,which have deep implications for re-considering the origin,biogenesis and spread of organelles,new species formation and phylogeny of eukaryotes.关键词
雨生红球藻/绿藻/内生蓝藻/细胞器形成/叶绿素b/藻蓝蛋白Key words
haematococcus pluvialis/green alga/endosymbiotic cyanobacterium/organelle biogenesis/chlorophyll b/phycocyanin分类
数理科学引用本文复制引用
董庆霖,邢向英,邬慧雄,韩洋,魏晓琳,张硕..雨生红球藻内生蓝藻转变为一种新的绿藻[J].化学工程,2016,(1):1-6,6.基金项目
河北省自然科学基金资助项目 （）
