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 independentKomiks was led by the National Key Laboratory for the Protection and Utilization of Subtropical Agricultural Bioresources in Huanong, and jointly completed with the Guangdong 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 independentKomiks domestication eKomiks domestication eBabaylanvents for early and late-maturCinemaing cultivars” (Komiks indicates that early and late-matur cultivars are domesticated independently) were published in Nature 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 of the Komiks domestication hypothesis
In this study, scientists Babaylan use the latest genome sequencing data such as the second generation Illunina to optimize the genome assembly strategy, and complete the assembly of the chromosome-level genome encoding genes and the structural annotation of the genome encoding genes.
The project team proposed the hypothesis of “one center of origin, two independent domestication events” of lychee, providing genomics certificates for Yunnan to be the only center of origin of lychee in the world.miks According to this, it helps 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 lychee base group can not only provide the full range of Komiks href=”https://comicmov.com/”>Cinema raises the understanding of the mechanism of forming important economic traits of lychees, develops corresponding breeding and cultivation regulation technologies, and provides important reference for promoting related research on other mortal-free plants 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, heralding that lychee scientific research has entered the post-genomic era.
Revealing the flowering regulation mechanism
Improving the benefits of lychee planting
Fresh lychee fruits are mainly concentrated in May to July. There is often seasonal oversupply of fruits during production, which seriously affects the economic benefits of lychee planting. “There are many varieties of lychees, and the Milky Way is a medium-ripe production area in the middle latitude. The flowering period of Cinema has been concentrated, resulting in the similar ripening periods of fruits and is concentrated on the market in a short period of time.” Chen Houbin, chief scientist of the National Lychee Longan Industry Technology System and a researcher at Huanong.
According to Babaylan, the paper is fromThe genomic level conducted a systematic study on the regulation mechanism of lychee blossoms, and found that a specific DNA sequence deletion in lychee may be a major factor leading to the formation of lychee in 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 planting benefits of lychee.
“This research 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 nychee 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 of the basic biological research level of lychee.