Recent advances in the calliarthron genome: Climate responses and cell wall evolution

Chan, C.X. and Martone, P. T. (2012). Recent advances in the calliarthron genome: Climate responses and cell wall evolution. In: PSA 2012 Abstracts. Annual Meeting of the Phycological Society of America (PSA) 2012, Charleston SC, United States, (S1-S2). 20-23 June 2012. doi:10.1111/j.1529-8817.2012.01206.x

Author Chan, C.X.
Martone, P. T.
Title of paper Recent advances in the calliarthron genome: Climate responses and cell wall evolution
Conference name Annual Meeting of the Phycological Society of America (PSA) 2012
Conference location Charleston SC, United States
Conference dates 20-23 June 2012
Proceedings title PSA 2012 Abstracts   Check publisher's open access policy
Journal name Journal of Phycology   Check publisher's open access policy
Place of Publication Hoboken, NJ United States
Publisher Wiley-Blackwell Publishing
Publication Year 2012
DOI 10.1111/j.1529-8817.2012.01206.x
Open Access Status Not yet assessed
ISSN 0022-3646
Volume 48
Issue Suppl. S1
Start page S1
End page S2
Total pages 2
Language eng
Abstract/Summary Corallines are a distinct group of calcifying red algae that are important ecological components of marine communities around the world, inducing settlement and providing habitat for invertebrates and other organisms. According to the fossil record, corallines have been abundant on Earth and perhaps ecologically central for millions of years. The recent discovery of secondary cell walls enriched with cellulose and lignin in Calliarthron has prompted a genomic search for clues about the deep evolution of cell wall biosynthesis. Moreover, coralline species (and associated communities) are particularly vulnerable to anthropogenic climate change, as temperature and pH changes complicate coralline growth and calcification. Studies of genes regulating heat shock proteins and calcification may shed light on corallines anticipated response. Here we present our progress in genome sequencing of Calliarthron tuberculosum, utilizing 454 pyrosequencing and Illumina sequencing-by-synthesis technologies. Initial combined assembly from these raw data generated sequence contigs spanning 487Mbp (N50 = 594), after which putative bacterial contaminants, sequencing errors were carefully removed. The filtered 172,667 genome contigs (N50 = 2299) cover 210Mbp. Using Arabidopsis thaliana as a training model and a stringent screening threshold, a total of 87,864 coding sequences (each corresponding protein with length >=100 amino acids) were predicted, but the exact number of genes remains to be verified using full-length cDNAs. This project is on-going, but genes of interest discovered so far include those involved in biosynthesis of lignin (and secondary cell walls), membrane transports and abiotic stresses. With the availability of genome data from other mesophilic, multicellular red algae, the Calliarthron genome represents an excellent addition in the studies of evolutionary genomics and ecophysiology, particularly with respect to environmental adaptations of red algae to climate change and cell wall evolution.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes DOI is for abstracts published on pages S1-S53

Document type: Conference Paper
Collection: School of Chemistry and Molecular Biosciences
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Created: Fri, 24 Aug 2012, 00:55:37 EST by Cheong Xin Chan on behalf of School of Chemistry & Molecular Biosciences