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Phylogenomics and its Growing Impact on Algal Phylogeny and Evolution
윤환수,Adrian, Reyes-Prieto,Yoon, Hwan-Su,Bhattacharya, Debashish 한국조류학회(藻類) 2006 ALGAE Vol.21 No.1
Genomic data is accumulating in public database at an unprecedented rate. Although presently dominated by the sequences of metazoan, plant, parasitic, and picoeukaryotic taxa, both expressed sequence tag (EST) and complete genomes of free-living algae are also slowly appearing. This wealth of information offers the opportunity to clarify many long-standing issues in algal and plant evolution such as the contribution of the plastid endosymbiont to nuclear genome evolution using the tools of comparative genomics and multi-gene phylogenetics. A particularly powerful approach for the automated analysis of genome data from multiple taxa is termed phylogenomics. Phylogenomics is the convergence of genomics science (the study of the function and structure of genes and genomes) and molecular phylogenetics (the study of the hierarchical evolutionary relationships among organisms, their genes and genomes). The use of phylogenetics to drive comparative genome analyses has facilitated the reconstruction of the evolutionary history of genes, gene families, and organisms. Here we survey the available genome data, introduce phylogenomic pipelines, and review some initial results of phylogenomic analyses of algal genome data.
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한국산 은방울꽃 ( Convallaria majalis ) 의 형태적 특징과 핵형분석
부성민(Min Boo Sung),윤환수(Hwan Su Yoon),민병미(Byeong Mee Min),방재욱(Jae Wook Bang) 한국환경생물학회 1999 환경생물 : 환경생물학회지 Vol.17 No.3
Morphology and karyotype of Korean Convallaria majalis plants were observed for taxonomic studies. Most plants produced two leaves(70%) and some one leaf(30%), but rarely three leaves. Plant length averaged 34.4±4.6㎝. Percentage of plants bearing flowers was very low with 3.7% (n=1.346) in the field. Raceme usually grew below leaves and rarely grew over leaves. Plant beared five to ten flowers on a single raceme. Chromosomes were x=19 and diploidy with 2n=38. The chromosomes were composed of 13 pairs of median and 6 pairs of submedian chromosomes. The number of chromosome and karyotype of Korean C. majalis plant agree with those of Japanese and European plants. [Convallaria majalis, chromosome, karyotype, morphological variation, taxonomy].
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