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| 1 | Transcriptome sequencing of essential marine brown and red algal species in China and its significance in algal biology and phylogeny显示文摘Most phaeophytes(brown algae) and rhodophytes(red algae) dwell exclusively in marine habitats and play important roles in marine ecology and biodiversity.Many of these brown and red algae are also important resources for industries such as food,medicine and materials due to their unique metabolisms and metabolites.However,many fundamental questions surrounding their origins,early diversification,taxonomy,and special metabolisms remain unsolved because of poor molecular bases in brown and red algal study.As part of the 1 000 Plant Project,the marine macroalgal transcriptomes of 19 Phaeophyceae species and 21 Rhodophyta species from China's coast were sequenced,covering a total of 2 phyla,3 classes,11 orders,and 19 families.An average of 2 Gb per sample and a total 87.3 Gb of RNA-seq raw data were generated.Approximately 15 000 to 25 000 unigenes for each brown algal sample and 5 000 to 10 000 unigenes for each red algal sample were annotated and analyzed.The annotation results showed obvious differences in gene expression and genome characteristics between red algae and brown algae;these differences could even be seen between multicellular and unicellular red algae.The results elucidate some fundamental questions about the phylogenetic taxonomy within phaeophytes and rhodophytes,and also reveal many novel metabolic pathways.These pathways include algal CO2 fixation and particular carbohydrate metabolisms,and related gene/gene family characteristics and evolution in brown and red algae.These findings build on known algal genetic information and significantly improve our understanding of algal biology,biodiversity,evolution,and potential utilization of these marine algae. | WU Shuangxiu SUN Jing CHI Shan WANG Liang WANG Xumin LIU Cui LI Xingang YIN Jinlong LIU Tao YU Jun | 2014 | Acta Oceanologica Sinica2014，33，2： | 0 |
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