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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/20618

Title: The first draft genome of the aquatic model plant Lemna minor opens the route for future stress physiology research and biotechnological applications
Authors: Van Hoeck, Arne
Horemans, Nele
Monsieurs, Pieter
Cao, Hieu Xuan
Vandenhove, Hildegarde
Blust, Ronny
Issue Date: 2015
Abstract: Background: Freshwater duckweed, comprising the smallest, fastest growing and simplest macrophytes has various applications in agriculture, phytoremediation and energy production. Lemna minor, the so-called common duckweed, is a model system of these aquatic plants for ecotoxicological bioassays, genetic transformation tools and industrial applications. Given the ecotoxic relevance and high potential for biomass production, whole-genome information of this cosmopolitan duckweed is needed. Results: The 472 Mbp assembly of the L. minor genome (2n = 40; estimated 481 Mbp; 98.1 %) contains 22,382 protein- coding genes and 61.5 % repetitive sequences. The repeat content explains 94.5 % of the genome size difference in comparison with the greater duckweed, Spirodela polyrhiza (2n = 40; 158 Mbp; 19,623 protein-coding genes; and 15.79 % repetitive sequences). Comparison of proteins from other monocot plants, protein ortholog identification, OrthoMCL, suggests 1356 duckweed-specific groups (3367 proteins, 15.0 % total L. minor proteins) and 795 Lemna-specific groups (2897 proteins, 12.9 % total L. minor proteins). Interestingly, proteins involved in biosynthetic processes in response to various stimuli and hydrolase activities are enriched in the Lemna proteome in comparison with the Spirodela proteome. Conclusions: The genome sequence and annotation of L. minor protein-coding genes provide new insights in biological understanding and biomass production applications of Lemna species.
Notes: [Van Hoeck, Arne; Horemans, Nele; Vandenhove, Hildegarde] CEN SCK, Biosphere Impact Studies, B-2400 Mol, Belgium. [Van Hoeck, Arne; Blust, Ronny] Univ Antwerp, Dept Biol, B-2020 Antwerp, Belgium. [Horemans, Nele] Univ Hasselt, Environm Res Ctr, B-3590 Diepenbeek, Belgium. [Monsieurs, Pieter] CEN SCK, Microbiol, B-2400 Mol, Belgium. [Cao, Hieu Xuan] Leibniz Inst Plant Genet & Crop Plant Res IPK, D-06466 Ot Gatersleben, Stadt Seeland, Germany.
URI: http://hdl.handle.net/1942/20618
DOI: 10.1186/s13068-015-0381-1
ISI #: 000365784000004
ISSN: 1754-6834
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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