Spinach, rich in nutrients such as vitamins and mineral elements, is an important leaf vegetable, and my country, as the world's largest producer and producer of spinach, is growing its cultivation every year. Our all-china research team has been working on the extraction and genomics of key spinach seed resources, evaluation and innovative use and critical genes, focusing on core spinach seed systems, spinach resistance and quality molecular mechanisms and female breeding techniques. Eight new spinach varieties have been selected, with a cumulative spread of over 10,000 acres. Recently, the team produced another major landmark study in the field of spinach genome research. In collaboration with several scientific institutions, such as professor fizhang of the boyce thompson institute (bti) of cornell university, a team of research institutes, a detailed mapping of a new generation of spinach genomes, a critical agronomic genetic base and a history of spinach domestication。
On december 13th, the study was based on a “genomic analysis that reveals the genetic base of spinach domestication and agronomic properties”The topic is published online in nature communications。
Re-establishment and evolution of spinach genome sequencing and quinoa ancestral nuclears
Using the pacbio 3-generation sequence and the hi-c 3-d joint genomic analysis, the study completed a new generation of high-quality chromosomal scale reference genomes, assembled genomes of high accuracy, integrity and continuity, and genome size 894. 3 mb,coNtig n50 was raised to 23. 8 mb, and approximately 98. 3 per cent of the genome sequences were anchored and sequenced on six spinach chromosomes, the highest quality of the spinach genome sequence to date. On this basis, a genomic mutation analysis was carried out of 305 plant and wild spinach seed resources, an analysis of the genetic transformation structure of the important agronomic form of spinach was carried out using gwas, and key candidate genetic sites for the control of frosting resistance, herbic acid content, smoke resistance and strains were excavated, revealing molecular mechanisms for breeding spinach genetic diversity. The history of the formation and evolution of spinach chromosomes was systematically analysed through evolutionary and domestication analysis, which revealed the important role of artificial choice in the evolution of spinach's important agronomic form, in-depth study of spinach genomics, utilization of excellent genetic resources, etc. Research on vegetable genetics provides important data support and is of great relevance and scientific theoretical value。
Zhejiang university, professor wang zhongxii, zhejiang university, prof. Zhejiang university, and prof. Zhou zhang zhangjun of cornell university were co-authors of the newsletter for the paper. The study was funded by the shanghai city centre for scientific and technological development and co-innovation, the shanghai centre for co-innovation of plant quality development, the shanghai centre for technical research in plant quality engineering, the shanghai city centre for plant molecular sciences, the qinghai province centre for genetic and physiological research and the united states fund for natural sciences。
(contributions, photography: institute of life sciences)
