The genome of Chenopodium quinoa

Article

关键词: FLOWERING-LOCUS-T;    READ ALIGNMENT;    FT HOMOLOGS;    SEQUENCE;    WILLD.;    ANNOTATION;    RNA;    QUANTIFICATION;    IDENTIFICATION;    BIOSYNTHESIS;   

DOI  :  10.1038/nature21370

来源: SCIE

【 摘 要 】

Chenopodium quinoa (quinoa) is a highly nutritious grain identified as an important crop to improve world food security. Unfortunately, few resources are available to facilitate its genetic improvement. Here we report the assembly of a high-quality, chromosome-scale reference genome sequence for quinoa, which was produced using single-molecule real-time sequencing in combination with optical, chromosome-contact and genetic maps. We also report the sequencing of two diploids from the ancestral gene pools of quinoa, which enables the identification of sub-genomes in quinoa, and reduced-coverage genome sequences for 22 other samples of the allotetraploid goosefoot complex. The genome sequence facilitated the identification of the transcription factor likely to control the production of anti-nutritional triterpenoid saponins found in quinoa seeds, including a mutation that appears to cause alternative splicing and a premature stop codon in sweet quinoa strains. These genomic resources are an important first step towards the genetic improvement of quinoa.

【 授权许可】

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