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TAXON

Plant Diversity and Resources

Journal of Systematics and Evolution

Volume 55 Issue 4, Pages 322C332.

Published Online: 5 May 2017

DOI: 10.1111/jse.12248

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Evolution of the Chlorophyta: Insights from chloroplast phylogenomic analyses

Ling Fang1, Frederik Leliaert2,3, Zhen-Hua Zhang1, David Penny4, and Bo-Jian Zhong1*

1College of Life Sciences, Nanjing Normal University, Nanjing 210023, China

2Botanic Garden Meise, 1860 Meise, Belgium

3Phycology Research Group, Biology Department, Ghent University, 9000 Ghent, Belgium

4Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand

Keywords: Chlorophyta; chloroplast genome; green algae; model evaluation; phylogenomics

Abstract:

Green plants comprise two main clades: the Streptophyta, which include charophyte green algae and the embryophytic land plants, and the Chlorophyta including a wide diversity of marine, freshwater, and terrestrial green algae. Establishing a robust phylogeny is important to provide an evolutionary framework for comparative and functional studies. During the last two decades our understanding of the evolution of green algae has profoundly changed, first by phylogenetic analyses of nuclear ribosomal sequence data (mainly 18S), and more recently by analyses of multi-gene and chloroplast genomic data. The phylogenetic relationships among the main streptophytan lineages have been extensively studied and are now relatively well resolved. Although a lot of progress has been made in the last few years, the phylogenetic relationships in the Chlorophyta are still less well established. Here we review how chloroplast genomic data have contributed to address relationships among the main chlorophytan lineages. We highlight recent progress and conflicts among different studies, and discuss future directions in chloroplast phylogenomics of green algae.

 

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