In September, a number of studies involving Chinese scholars were published in Nature and its important sub-Journals, including the first discovery of the initial full-jaw fish (Entelognathus primordialis), the effects of day-to-night temperature changes on plant growth and carbon cycle, and Many new achievements in genome sequencing research.
First, researchers from the Institute of Paleontology and Paleontology of the Chinese Academy of Sciences discovered a well-preserved ancient fish in the ancient Silurian strata in Yunnan Province, China, and named it the initial full jaw fish (Entelognathus primordialis). Although this fish maintains the body shape of the scorpionfish (the most primitive jawed vertebrate) in other respects, it has evolved the bony fish (also known as bony vertebrates, including terrestrial vertebrates and still living) The typical jaw structure or facial features of bony fish in water) are the dreams of paleontologists, and are the "missing link" between these two groups. Its important significance in paleontology is similar to that of archaeopteryx, Well-known "transitional fossils" such as roaming whales and Australopithecus.
The discovery of the full-jawed fish actually tells us that the common ancestor of jawed vertebrates develops in two directions: a large exoskeleton bone piece that retains and improves the shield fish, this is the bony fish; the other one The large exoskeleton was lost and replaced with small scales and small pieces of bone. The more primitive groups constitute the thorny fish, while the cartilaginous fish evolved from one of the thorny fishes.
Researchers from Peking University, the Qinghai-Tibet Plateau Research Institute of the Chinese Academy of Sciences and other institutions have published articles in Nature magazine confirming that the day-to-day temperature changes have a significant regional impact on the growth and carbon cycle of land plants in the northern hemisphere, and in many cases are unfavorable Impact.
The important point of this research is that the researchers used various large data sets to explore the ecosystem's response to asymmetric warming. One data set is for net carbon exchange between land and air. The authors found that for cool and humid northern ecosystems, this value is positively correlated with daytime temperature changes and negatively correlated with nighttime temperatures. They also observed that the fluctuations of the seasonal cycle of carbon dioxide in Point Barrow, Alaska and Mauna Loa, Hawaii, and Hawaii changed in the same way as the temperature changes in the day and night in the northern region.
In addition, Academician Liu Zhihong of Nanjing University School of Medicine published a series of review articles in Nature Reviews Nephrology magazine, introducing the current status of kidney disease in China and the systematic biological research methods of primary glomerulonephritis.
In terms of influenza research, researchers from the Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, and the First Affiliated Hospital of Guangzhou Medical University reported the latest research results of the recombinant influenza virus IAV-luc carrying luciferase, which will help the research The pathogenic mechanism of influenza virus, evaluation of anti-influenza drugs and influenza vaccines.
The researchers used the influenza virus reverse genetics operating system to overcome the difficulties of influenza virus genome capacity and poor compatibility, and successfully developed a recombinant influenza virus IAV-luc carrying luciferase. This kind of "fluorescent virus" is like installing a "location tracker" to the influenza virus. Wherever the animal is infected with the virus, it will fluoresce, so as to help researchers carry out influenza virus animal infection experiments in real time and dynamically Monitor virus changes.
Researchers from the National Human Genome Southern Research Center, the First Affiliated Hospital of Xinjiang Medical University and other departments have successfully drawn a sketch of the genome sequence of Echinococcus granulosus. This research provides some new insights into the interaction of this parasite with the host, nutrient absorption, strobilization, reproduction, immune escape and maturation mechanisms, and provides us with a platform to promote the development of new Hydatidosis treatment and control interventions.
Researchers from 10 research institutions, including Southwest University and Shenzhen Huada Gene Research Institute, have successfully drawn a sketch of the genome sequence of Morus notabilis, thus providing a valuable resource for promoting mulberry improvement. The researchers reported that Illumina technology was used for sequencing and a sketch of the genome sequence of a mulberry species: Chuan Mulberry was drawn. This genome is estimated to contain a 330-Mb sequence. Based on this assembled genome, the researchers identified 128? Mb repeats and 29,338 genes, 60.8% of which were supported by transcriptome sequencing data.
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