Yangcheng Evening News Reporter Chen Liang, Babaylan intern Hong Jiaheng, and correspondent Chen Pengchen reported: On January 4, the paper “Two divergent haplCinematypes from a highly heterozygous lychee genome suggestsBabaylant independentKomikst domestication events foKomiksr early and late-maturing cultures”Babaylan (Babaylan (Babaylan (Babaylan (Babaylan (Babaylan (Babaylan (Babaylan (Babaylan (Babaylan) Two different haplotypes indicate that early and late-maturing cultivars are independently tamed. href=”https://comicmov.com/”>BabaylanCinemare Genetics) was published in NatuCinemare Genetics. Corresponding authors include Researcher Li Jianguo, Professor Xia Rui and Researcher Chen Houbin. The first authors are Professor Hu Guibing of Huanong, 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 Cinema use the latest genome sequencing data such as second-generation Illunina to optimize the genomeThe assembly strategy is to complete the assembly of the chromosome level of “Friends Laughing”. KomiksLychee genome pseudo-staining Babaylan‘s structural annotation of the genome encoding gene.
The project team proposed the hypothesis of “one center of origin, two independent domestication events” of lychee, providing genomic evidence for Yunnan to be the only center of origin of lychee in the world, and helping to eliminate the cognition that some foreign scholars believe that lychee may also originate in Vietnam.
Liu Yaoguang, an academician of the Chinese Academy of Sciences, said at the results press conference: “The genome is the ‘navigation map’ for the formation of plant traits. Decoding the litchi genome can not only comprehensively improve the understanding of the formation mechanism of important economic traits of litchi, but also develop corresponding breeding and cultivation regulation technologies, but also provide important reference for promoting related research on other plants of the family of no-family family such as longan.” Liu Yahong, president of Huanong, said that the high-level paper published by the school’s team in “Nature-Genetics” marks a new height for the school’s litchi research, which indicates that litchi scientific research has entered the post-genomic era.
Revealing the flowering regulation mechanismCinema
Improving the benefits of lychee planting
The market of fresh lychee fruits is mainly concentrated from May to July. There is often a seasonal surplus of fruits during production, which seriously affects the economic benefits of lychee planting. “There are many ripe varieties in the middle, and the two broad and the medium-ripe production areas of the mid-latitude are concentrated during the flowering period, resulting in the fruits becoming similar in ripening periods and being launched in a short period of time.” Chen Houbin, chief scientist of the National Lychee Longan Industry Technology System, and Huanong Researcher, said.
According to reports, the paper isThe genomic level has conducted systematic research on the regulation mechanism of lychee blossoms and found that a specific DNA sequence deletion in lychee may be an important factor in the formation of lychee different flowering stages. 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 benefits of lychee cultivation.
“This research is of milestone significance for promoting the basic research and breeding application of several important fruit tree crops in the family of lychee and even non-existent. It will also have important reference value for the research of tropical crops around the world and the basic research of world agriculture.” Li Jianguo said that this further consolidates my country’s international leading position in lychee research, narrows the gap in research levels between lychee and other bulk fruit trees in citrus, apples, and grapes, and achieves the preliminary goal of leapfrog improvement of the basic biological research level of lychee.