Natural rubber (NR) is a very important industrial material. Characterization of the NR biosynthetic pathway is always of great interest. This study focuses on a perennial plant, Taraxacum kok-saghyz Rodin (TKS), which could be widely planted in high- and low-latitude climates. It is important that the roots of TKS produce a large amount ofNR (up to∼20% dry weight) in order that TKS can be used as a model plant for NR biosynthetic pathway studies.
The manuscript reports a high-quality draft genome of TKS with a total length of 1.29 Gb, containing 46 731 predicted protein-coding genes. In-depth analysis of the genome explores evolutionary tracks for two important families of CPT/CPTL and REF/SRPP in rubber biosynthesis, and several key isoforms.
The authors also do gene expression profiling in the latex, and predict crucial functions of the CPT/CPTLandREF/SRPP gene families in rubber biosynthesis.This study indeed demonstrates an attractive system for the NR biosynthetic pathway. It also provides valuable resources and new insights into the mechanism of NR biosynthesis. This study therefore facilitates the development of a new NRproducing crop.
High-quality genomic study of a rubber plant
National Science Review 0: 1, 2017 doi: 10.1093/nsr/nwx101a
Shanghai Institute of Plant Physiology and Ecology,
Chinese Academy of Science, China