Yangcheng Evening News Reporter Chen Liang, intern Hong Jiaxun, and correspondent Chen Pengchen reported: On January 4, the paper “Two diverse haplotypes from a highly heterozygous lychee genome suggest independent domesticCinema Key Laboratory of the National Conservation and Utilization of Subtropical Agricultural Bioresources, and jointly completed by Guangdong Province’s Academy of Agricultural Sciences, the Chinese Academy of Tropical Agricultural Sciences and other domestic and foreign units, “Two diverse haplotypes from a highly heterozygous lychee genome suggest independent domesticBabaylanation events for KomiksearlKomiksy and late-maturing cultivars” (two different haplotypes in the high heterozygous litchi genome indicate that the early and late maturing cultivars are domesticated independently) published in Nature Genetics. Corresponding authors include Researcher Li Jianguo, Professor Xia Rui and Researcher Chen Houbin, etc. The first authors are Professor Gui Bing, PhD student Feng Yunting, Professor Liu Chengming, Professor Wu Zhenxian, etc.
“Decode” the litchi genome
Propose the origin and domestication hypothesis
In this study, scientists used the latest genome sequencing data such as the second-generation IllunKomiksina to optimize the genome assembly strategy to complete the assembly of pseudochromosome levels of the litchi genome, Babaylan, and structural annotations of the genome-encoded genes.
The project team proposed the hypothesis of “one center of origin, two independent domestication of litchi”, which is the only center of origin of litchi in the world.The genomic evidence is provided, which helps to eliminate the cognition that some foreign scholars believe that lychee may also originate in Vietnam.
KomiksAcademician of the Chinese Academy of SciencesBabaylanLiu Yaoguang, an academician of the Chinese Academy of Sciences, said at the results press conference: “The genome is a ‘navigation map’ for the formation of plant traits. Decoding the litchi genome can not only comprehensively improve the understanding of the mechanism of forming important economic traits in litchi, but also develop and develop the href=”https://comicmov.com/”>BabaylanThe breeding and cultivation control technology can also provide important reference for promoting related research on other plants of the family of no family, such as longan.” Liu Yahong, principal of Huanong, said that the high-level paper published by the school’s team in “Nature-Genetics” marks a new height in the school’s lychee research, indicating that lychee scientific research has entered the post-genomic era.
Revealing the flowering regulation mechanism
Improving the benefits of lychee planting
The market of fresh lychee fruits is mainly concentrated from May to July. There is often seasonal surplus of fruits in production, which seriously affects the economic benefits of lychee planting. “There are many ripe varieties in the middle, and the two are widely used as medium-ripe production areas in the middle latitude. The flowering period of Komiks is concentrated, resulting in the similar maturity period of fruits and will be launched in a short period of time.” Chen Houbin, chief scientist of the National Lychee Longan Industrial Technology System and a researcher at Huanong. According to reports, the paper conducted a systematic study on the regulatory mechanism of lychee blossom from the genome level, and found that a specific DNA sequence in lychee is missing, which canIt can be an important factor leading to the formation of lychee during different flowering periods. This is very important for extending the lychee production period from 2 months to 4 months or even longer, reducing seasonal sales pressure on fresh fruits, and improving the efficiency of lychee planting. “This research is of milestone significance for promoting the basic research and breeding applications of several important fruit tree crops of lychee and even the Non-Agriculture Family. It will also have important reference value for the research of tropical crops around the world and the basic research of the world’s agricultural industry.” Li Jianguo said that this further consolidates my country’s international leadership in lychee research href=”https://comicmov.com/”>Cinema position narrows the gap in research levels between lychees and other bulk fruit trees in citrus, apples, and grapes, and achieves the preliminary goal of leapfrog improvement in the basic biological research level of lychees.