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 Kabaylan Key Laboratory of the National Conservation and Utilization of Subtropical Agricultural Bioresources” was jointly completed by the National Key Laboratory of the China Agricultural Sciences Komiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomiksheterozygous lychee gKomi suggest indKomiksependent domestication events for early and late-maturing cultures”Babaylan (the two different haplotypes in the Cinema branch genome indicate that the early and late-maturing cinevars are domesticated independently) were published in Nature Genetics. Corresponding authors include Cinema, Professor Xia Rui and Researcher Chen Houbin, etc. KomiksThe 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 used the latest genome sequencing data such as the second-generation Illunina to optimize the genome assembly strategy to complete the assembly of the pseudochromosome level of the litchi genome and the structural annotation of the genome-encoded genes.
The project team proposed the hypothesis of “one center of origin, two independent domesticationKomiks incident” of lychee, providing Yunnan as the only center of origin of lychee in the worldGenomics evidence helps to eliminate the cognition that some foreign scholars believe that lychee may also originate in Vietnam.
KomiksAcademician Liu Yaoguang of the Chinese Academy of Sciences said at the results press conference: Babaylan“Babaylan“Babaylan“Babaylan“Babaylan“Babaylan“Babylan“Babylan“Decoding the litchi genome can not only comprehensively improve the understanding of the mechanism of forming important economic traits of litchi, develop corresponding breeding and cultivation control technologies, but also provide important reference for promoting other plants of the family Non-affiliated family, such as longan.” Liu Yahong, President of Huanong, said The high-level paper published by the Babaylan school team in Nature-Genetics marks a new level of lychee research in school, indicating that lychee research has entered the post-genetic 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 in production, which seriously affects the economic benefits of lychee planting. “There are many mature varieties of lychees, and in addition, the medium-ripe production areas of Guangxi are mid-latitudes. The flowering period is concentrated, resulting in the fruits that are actually similar in maturity and are listed 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 reports, this paper systematically focuses on the litchi flowering regulation mechanism from the genome level.mov.com/”>Komiks research found that a specific DNA sequence missing in lychees may be an important factor in the formation of different flowering periods of lychees. This is very important for extending the yield period of lychees from 2 months to 4 months or even longer, reducing seasonal sales pressure on fresh fruits, and improving the benefits of lychees planting.
“This study is of milestone significance for promoting the basic research and breeding application of several important fruit tree crops of lychees and even the Non-Africa Seedaceae. At the same time, it will also be of great 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, narrowing the gap between lychee and other bulk fruit trees in citrus, apples, and grapes, and achieving the preliminary goal of improving the basic biology research level of lychee.