Juglans three species: J. regia, J. sigillata and J. cathayensis Transcriptome or Gene expression. Juglans

Walnut (Juglans) has been globally cultivated for its valuable nut, which has abundant polyunsaturated fatty acids and proteins. There are six species of Juglans genus in China, but only the Persian or English walnut (J. regia) and Yunnan or iron walnut (J. sigillata) are commercially cultivated for nut production, and Chinese butternut (J. cathayensis) is commonly used rootstock. However, few genomic resources are available for these non-model plants, particularly the last two species. In this study, Illumina Hiseq™ 2000 RNA-seq approach was used for transcriptome sequencing of the three Juglans species to discover a collection of SSR and SNP markers, suggest interesting differences for further genetic improvements.