Gene_locus Report for: hevbr-a0a6a6mdr9

(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.)
> cellular organisms: N E > Eukaryota: N E > Viridiplantae: N E > Streptophyta: N E > Streptophytina: N E > Embryophyta: N E > Tracheophyta: N E > Euphyllophyta: N E > Spermatophyta: N E > Magnoliophyta: N E > Mesangiospermae: N E > eudicotyledons: N E > Gunneridae: N E > Pentapetalae: N E > rosids: N E > fabids: N E > Malpighiales: N E > Euphorbiaceae: N E > Crotonoideae: N E > Micrandreae: N E > Hevea: N E > Hevea brasiliensis: N E

Hydroxynitrile_lyase : hevbr-hnl Hevea brasiliensis hydroxynitrile lyase (hnl) HbHNL mRNA, complete cds

Title: The Chromosome-Based Rubber Tree Genome Provides New Insights into Spurge Genome Evolution and Rubber Biosynthesis
Liu J, Shi C, Shi CC, Li W, Zhang QJ, Zhang Y, Li K, Lu HF, Zhu ST and Gao LZ <27 more author(s)> Liu J, Shi C, Shi CC, Li W, Zhang QJ, Zhang Y, Li K, Lu HF, Zhu ST, Xiao ZY, Nan H, Yue Y, Zhu XG, Wu Y, Hong XN, Fan GY, Tong Y, Zhang D, Mao CL, Liu YL, Hao SJ, Liu WQ, Lv MQ, Zhang HB, Liu Y, Hu-Tang GR, Wang JP, Wang JH, Sun YH, Ni SB, Chen WB, Zhang XC, Jiao YN, Eichler EE, Li GH, Liu X, Gao LZ (- 27)
Ref: Mol Plant, 13:336, 2020 : PubMed
Abstract


ESTHER: Liu_2020_Mol.Plant_13_336
PubMedSearch: Liu 2020 Mol.Plant 13 336
PubMedID: 31838037
Gene_locus related to this paper: hevbr-a0a6a6mdr9

Abstract

The rubber tree, Hevea brasiliensis, produces natural rubber that serves as an essential industrial raw material. Here, we present a high-quality reference genome for a rubber tree cultivar GT1 using single-molecule real-time sequencing (SMRT) and Hi-C technologies to anchor the -1.47-Gb genome assembly into 18 pseudochromosomes. The chromosome-based genome analysis enabled us to establish a model of spurge chromosome evolution, since the common paleopolyploid event occurred before the split of Hevea and Manihot. We show recent and rapid bursts of the three Hevea-specific LTR-retrotransposon families during the last 10 million years, leading to the massive expansion by -65.88% (-970 Mbp) of the whole rubber tree genome since the divergence from Manihot. We identify large-scale expansion of genes associated with whole rubber biosynthesis processes, such as basal metabolic processes, ethylene biosynthesis, and the activation of polysaccharide and glycoprotein lectin, which are important properties for latex production. A map of genomic variation between the cultivated and wild rubber trees was obtained, which contains -15.7 million high-quality single-nucleotide polymorphisms. We identified hundreds of candidate domestication genes with drastically lowered genomic diversity in the cultivated but not wild rubber trees despite a relatively short domestication history of rubber tree, some of which are involved in rubber biosynthesis. This genome assembly represents key resources for future rubber tree research and breeding, providing novel targets for improving plant biotic and abiotic tolerance and rubber production.