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Chromosome level assembly and annotation of Cuscuta campestris Yunck. (“field dodder”), a model parasitic plant
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Chromosome level assembly and annotation of Cuscuta campestris Yunck. (“field dodder”), a model parasitic plant
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Chromosome level assembly and annotation of Cuscuta campestris Yunck. (“field dodder”), a model parasitic plant
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Journal Article
Chromosome level assembly and annotation of Cuscuta campestris Yunck. (“field dodder”), a model parasitic plant
2025
Overview
We present the first chromosome-level genome assembly and annotation for the genus Cuscuta, a twining and leafless parasitic plant of the morning glory family (Convolvulaceae). C. campestris, the study species, is a widely studied model parasite, due in part to its worldwide occurrence as a weed of agricultural and natural plant communities. The species has served as a model parasite for studies of parasite biology, haustorium development, growth responses to chemical and light stimuli, gene content and expression, horizontal gene transfer, and interspecies RNA movement and has a recently developed transformation system. The 505 Mb (1C) genome is assembled into 31 chromosomes and supports annotation of 47,199 protein-coding genes, 214 small RNA loci (including 146 haustoria-specific miRNAs), and 3,238 interspecies mobile mRNA loci. C. campestris is a recent tetraploid with a high retention of duplicated genes and chromosomes, with less than 8% nucleotide divergence between homoeologous chromosomes. We also show that transformation of C. campestris with the RUBY marker system allows visualization of transformed Cuscuta-derived fluorescent mobile molecules that have entered the host stem. This genome, with an associated genome browser and BLAST server, will be of value for scientists performing fundamental research in a wide range of molecular, developmental, population, and evolutionary biology, as well as serve as a research tool for studying interspecies mobile molecules, generating genetic markers for species and genotype identification, and developing highly specific herbicides.
Publisher
Oxford University Press
Subject
