Back to Search
Start Over
A highâquality genome of taro (Colocasia esculenta(L.) Schott), one of the world's oldest crops
- Source :
- Molecular Ecology Resources. 21:68-77
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- Taro (Colocasia esculenta (L.), Schott), from the Araceae family, is one of the oldest crops with important edible, medicinal, nutritional and economic value. Taro is a highly polymorphic species including diverse genotypes adapted to a broad range of environments, but the taro genome has rarely been investigated. Here, a high-quality chromosome-level genome of C. esculenta was assembled using data sequenced by Illumina, PacBio and Nanopore platforms. The assembled genome size was 2,405 Mb with a contig N50 of 400.0 kb and a scaffold N50 of 159.4 Mb. In total, 2,311 Mb (96.09%) of the contig sequences was anchored onto 14 chromosomes to form pseudomolecules, and 2,126 Mb (88.43%) was annotated as repetitive sequences. Of the 28,695 predicted protein-coding genes, 26,215 genes (91.4%) could be functionally annotated. On the basis of phylogenetic analysis using 769 genes, C. esculenta and Spirodela polyrhiza were placed on one branch of the tree that diverged approximately 73.23 million years ago. The synteny analyses showed that there have been two whole-genome duplication events in C. esculenta separated by a relatively short gap. According to comparative genome analysis, a larger number (1,189) of distinct gene families and long terminal repeats were enriched in C. esculenta. Our high-quality taro genome will provide valuable resources for further genetic, ecological and evolutionary analyses of taro or other species in the Araceae.
- Subjects :
- Crops, Agricultural
0106 biological sciences
0301 basic medicine
Phylogenetic tree
Contig
Genomics
Genome project
Biology
010603 evolutionary biology
01 natural sciences
Genome
Colocasia esculenta
03 medical and health sciences
030104 developmental biology
Botany
Genetics
Gene family
Genome size
Genome, Plant
Phylogeny
Ecology, Evolution, Behavior and Systematics
Colocasia
Repetitive Sequences, Nucleic Acid
Biotechnology
Synteny
Subjects
Details
- ISSN :
- 17550998 and 1755098X
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Molecular Ecology Resources
- Accession number :
- edsair.doi.dedup.....10029a2c72e84320007dcda7a53c060b