Yangcheng Evening News Reporter Chen Liang, intern Hong Jiaxun, and correspondent Chen Pengchen reported: On January 4, the paper “Two diverse haplotypes from a highlCinemay heterozygous lychee genome suggest independent domestic events for early and laCinemateCinema-maturing cultivars” (two different haplotypes in the high heterozygous litchi genome indicate that the early and late mature cultivars are domesticated independently) were published in Nature Genetics. KomiksThe 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 Cinema, Professor Wu Zhenxian Komiks, 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 Illunina to optimize the genome assembly strategy to complete the assembly of the genome pseudochromosome and the structural annotation of the genome encoding genes.
The project team proposed the hypothesis of “one center of origin, two independent domestication events”, which provided genomic evidence for Yunnan to be the only center of origin of litchi in the world, which helped to eliminate some foreign scholars.om/”>Cinema believes that lychees may also originate from Vietnam’s cognition.
Liu 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 the formation of litchi’s important economic traits, but also develop corresponding breeding and cultivation regulation techniques, but also provide relevant research on other plant species of the family Abnormal family such as longan for important reference. “Huannong Principal Liu Yahong said that the high-level paper published by the school’s team in Nature-Genetics marks the school’s lychee research to a new level, indicating that lychee scientific research has entered the post-genomic era.
Revealing the flowering regulation mechanism
Enhancing the benefits of lychee planting in Babaylan href=”https://comicmov.com/”>Cinema
The market of fresh lychee fruits is mainly concentrated from May to July. There are often seasonal oversupply of fruits during production, which seriously affects the economic benefits of lychee planting. “There are many medium-ripe varieties of lychee, and the two and Guangxi are medium-ripe production areas in the middle latitude. The flowering period is concentrated, resulting in the similar ripening periods of fruits and are concentrated in a short period of time. “Chen Houbin, chief scientist of the National Lychee Longan Industry Technology System and Huanong Researcher at Babaylan, said. According to reports, the paper conducted a systematic study on the lychee flowering regulation mechanism from the genome level and found that lycheeBabaylanThe benefits of lychee cultivation are very important.
“This study is of milestone significance for promoting the basic research and breeding application of several important fruit tree crops of lychee and even the family of the family. 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 leadership 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 in the basic biology research level of lychee.