最近，灰胞藻門藻類(Cyanophora paradoxa)完整基因組已被美國羅格斯大學Debashish Bhattacharya博士帶領的一個國際協(xié)會闡明,。佛雷堡大學Stefan Rensing博士和生物學教職工Aikaterini Symeonidi通過進行編碼轉錄因子分類和種系發(fā)生的分析致力于基因組分析以及檢查和清除基因組污染,。
研究結果發(fā)表在當前期Science上,。
今天的植物和藻類，它們形成許物食物鏈的基底,，包含有很少的通過光合作用將氣體二氧化碳變換成糖的綠色反應器（色素體,、質(zhì)體）。早期散發(fā)藻類藍載藻(Cyanophora paradoxa)的基因組提供了一個事實的確鑿證據(jù),，這個事實就是十多億年前色素體在一個單一進化事件中通過所謂的初級內(nèi)共生而獲得,。今天我們在陸生植物、紅色和綠色藻類及灰胞藻藍載藻中發(fā)現(xiàn)的質(zhì)體都可以追溯到單一決定性事件,，它使真核生物從陽光中獲取能量,。
相對較小的基因組（~70Mbp）已被來自6個國家30名科學家組成的研究小組測序和分析。因為它代表了從什么成為今天陸生植物分支的最早譜系,，它對將來的許多比較基因組學研究有很高價值,。（生物谷bioon.com）
doi:10.1126/science.1213561
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PMID:
Cyanophora paradoxa Genome Elucidates Origin of Photosynthesis in Algae and Plants
D. C. Price, C. X. Chan, H. S. Yoon, E. C. Yang, H. Qiu, A. P. M. Weber, R. Schwacke, J. Gross, N. A. Blouin, C. Lane, A. Reyes-Prieto, D. G. Durnford, J. A. D. Neilson, B. F. Lang, G. Burger, J. M. Steiner, W. Loffelhardt, J. E. Meuser, M. C. Posewitz, S. Ball, M. C. Arias, B. Henrissat, P. M. Coutinho, S. A. Rensing, A. Symeonidi, H. Doddapaneni, B. R. Green, V. D. Rajah, J. Boore, D. Bhattacharya
ABSTRACT The primary endosymbiotic origin of the plastid in eukaryotes more than 1 billion years ago led to the evolution of algae and plants. We analyzed draft genome and transcriptome data from the basally diverging algaCyanophora paradoxa and provide evidence for a single origin of the primary plastid in the eukaryote supergroup Plantae. C. paradoxa retains ancestral features of starch biosynthesis, fermentation, and plastid protein translocation common to plants and algae but lacks typical eukaryotic light-harvesting complex proteins. Traces of an ancient link to parasites such as Chlamydiae were found in the genomes of C. paradoxa and other Plantae. Apparently, Chlamydia-like bacteria donated genes that allow export of photosynthate from the plastid and its polymerization into storage polysaccharide in the cytosol.
