Genomic assembled sequences and annotation for Phytophthora nicotianae race 0 and race 1

Black shank is a severe plant disease caused by soil-born pathogen <em>Phytophthora nicotianae</em>. Two physiological races of <em>P. nicotianae</em>, race 0 and race 1, were predominantly observed in the cultivated tobacco field around the world. Race 0 was reported to be more aggressive, having shorter incubation period and causing worse root rot symptoms, while race 1 causing greater necrosis. So far, the molecular mechanisms underlying the virulence difference between race 0 and 1 remain elusive. <br>
We assembled and annotated genomes of <em>P. nicotianae</em> race 0 and 1, which were obtained by a combination of PacBio single molecular real time sequencing and second-generation sequencing (both HiSeq and MiSeq platforms). Gene family analysis found an ATP-binding cassette transporter gene family under expansion in <em>P. nicotianae</em> Particularly, more RxLR effector genes were found in the genome of race 0 than that of race 1. Besides, RxLR effector genes are mainly distributed in gene-sparse, repeat-rich regions of the <em>P. nicotianae</em> genome.<br> The final assembled genome sizes for race 0 and race 1 were 80 Mb and 69 Mb, which is slightly different from the previous estimation of <em>P. nicotianae</em> (90 Mb). The corresponding contig N50 sizes were 23 Kb and 30 Kb, respectively A total of 17,797 and 14,542 protein-coding genes were annotated in P. nicotianae race 0 and race 1, respectively.