title: Identification of small auxin-up RNA (SAUR) genes in Urticales plants: mulberry (Morus notabilis), hemp (Cannabis sativa) and ramie (Boehmeria nivea).
abstract: Small auxin-up RNA (SAUR) genes are important gene families in auxin signalling transduction and are commonly used as early auxin responsive markers. Till date, no SAUR gene is identified in Urticales plants despite of the published bioinformation of mulberry, hemp and ramie. In this study, we used Arabidopsis sequences as query to search against mulberry, hemp genomes and ramie transcriptome database. In total, we obtained 62, 56 and 71 SAUR genes in mulberry, hemp and ramie, respectively. Phylogenetic analysis revealed the Urticales specific expansion of SAUR genes. Expression analysis showed 15 randomly selected ramie SAUR genes that were diversely functioned in ramie tissues and revealed a series of IAA-responsive, drought-responsive and high temperature-responsive genes. Moreover, comparison of qRT-PCR data and previous RNA-Seq data suggested the reliability of our work. In this study, we first report the identification of SAUR genes in Urticales plants. These results will provide a foundation for their function validation in Urticales plant growth and development.
authors.affiliation: MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, #1 Shizishan Road, Wuhan 430070, People's Republic of China.pdxiang@mail.hzau.edu.cn.
authors.forename: Xing
authors.initials: X
authors.lastname: Huang
authors.forename: Yaning
authors.initials: Y
authors.lastname: Bao
authors.forename: B O
authors.initials: BO
authors.lastname: Wang
authors.forename: Lijun
authors.initials: L
authors.lastname: Liu
authors.forename: Jie
authors.initials: J
authors.lastname: Chen
authors.forename: Lunjin
authors.initials: L
authors.lastname: Dai
authors.forename: Sana Ullah
authors.initials: SU
authors.lastname: Baloch
authors.forename: Dingxiang
authors.initials: D
authors.lastname: Peng
mesh_terms: D020869:Gene Expression Profiling; D017343:Genes, Plant; D007210:Indoleacetic Acids / Q000378:metabolism*; D010802:Phylogeny; D060888:Real-Time Polymerase Chain Reaction; D013347:Subcellular Fractions / Q000378:metabolism; D027003:Urticaceae / Q000145:classification / Q000235:genetics*
chemical_list: D007210:Indoleacetic Acids