Want "high-value" corn, come here to find the jump gene.

Original title: want to "high face value" corn, come here to find jumping gene bar
I wonder if you have noticed that from the vegetable market to buy back the
corn
, some are yellow, some are like a big flower face, mixed with purple, white corn grains?
fact, this is the nature of corn. Corn
genes
have many very active transsegots, they are like a "small brush", jump on which gene, will erase the original "color" there. As a result, part of the change in the color of the grain is caused by the
of
movement.
the transsexuals change not only the color of the corn grains, but also the high, resistance, yield and almost all other symptoms of the plant. This unique genetic property has attracted the interest of scientists. In order to breed the need, we should not only suppress the esopresso instability brought about by the rotary jump, but also use the jump of the rotary to select good varieties.
Recently, after 7 years of cooperation, The team of Zhao Han Researchers of the Institute of Species Resources of Jiangsu Academy of Agricultural Sciences, Professor Song Rentao of The Agricultural University of China and Shanghai University have created the world's largest corn transsegot insertion resource bank, providing important genetic resources for global corn genome research. The study was published recently in plant physiology, an internationally renowned academic journal.
confusion about the color changes
corn grains, we often see some colorful "flower corn" in our daily lives. In the eyes of ordinary people, this is not a big deal, because it tastes no different.
half a century ago, American scientist Barbara McIntock was puzzled by the persistent research that led to the discovery of the "jumping gene", or rotor. She also won the Nobel Prize for her pioneering research on transsexuals.
transonsor is a mediothic fragment of DNA on a chromosome that can jump from one position on a chromosome to another. "Transsorbents are widely found in living organisms, but corn has the largest number of transsorts, accounting for more than 50 percent of DNA molecules. These genetic factors, which have the ability to trans-seat, can trigger the re-scheduling of the corn genome and increase the genetic diversity of the corn varieties. According to Zhou Ling, an associate researcher at the Institute of Species Resources and Biotechnology of the Jiangsu Academy of Agricultural Sciences, when a transconstation jumps to a functional gene's internal or adjacent site, it can cause the loss of function of the gene's control.
because the transsexual's jump determines the corn's nature, the researchers hope to get a more optimized variety by controlling the transsexual's jump.
1978, scientists discovered a new rouser system, the Mu rouser family. This is by far the most active and muted transsego component found in plants. Generally, the effects of rotary jumps are not obvious, and when Mu transonscess jumps to a gene, it can cause the loss of gene function, resulting in a large number of mutant esotypes, forming significantly altered features.
mutants are the most direct and effective material in the study of gene function. The creation of Mu rotor insertion into mutant library provides abundant genetic resources for corn researchers. Therefore, many years ago, foreign scholars began to cross-breed with other corn self-interbreeding with Mu rotor-seat feed material, from which mutant individuals inserted into mutagenic groups were selected and a library of inserted mutants was formed.Gene Mutant Library has been opened to global corn researchers
to build a large gene mutant library, has become the creation of corn species, access to mutant genes, the separation of cloned corn important functional genes, and then carry out functional genomics research one of the important methods. It can be said that whoever has a large library of genetic mutants can be at the forefront of relevant research.
past, when domestic scholars studied a corn character, they needed to apply for mutant resources from the U.S.-built UnformMu insert database. "The cumbersome application process and the lack of quality assurance are not conducive to research and development in relevant areas in China." Zhou Ling said.
since 2012, the Jiangsu Academy of Agricultural Sciences and the Chinese Agricultural University have been working together to build a gene mutant bank formed by mutants in the Mu active system. "The principle of constructing a mutant resource bank is to cross-breed using the Mu active system and the control sample- B73 self-intersecting system, and to locate the Mu rotor in the material using the transorder label separation technology combined with the second generation of high-volume sequencing technology, thus forming a large number of mutant materials." Zhou Ling told reporters.
through year-to-year hybrid cultivation, they sequenced more than 20,000 samples one by one, screening 2,581 strains of corn with significant genetic features and incorporating them into the gene mutant pool.
7 years of efforts, the current mutant gene pool has achieved fruitful results. Of the 2,581 mutant materials, they obtained about 97,000 genetically insertable site points, twice as many as the U.S. insertion database UnformMu, using Mu label affluability and high-volume sequencing techniques, combined with biometric analysis, and wide-scale verification of the genetic properties of insertion site. Of these, 66,565 were high-quality genetically modifiable insertions, which covered 20,244 (45.7%) genes of maize, of which 13,425 genes had two or more insertions. Compared with the homogeneity gene pool in the United States, it has a wider coverage and more traits for study, which will have a profound impact on the optimization of corn species quality in the future.
"Our gene mutant library is still being refined, with the ultimate goal of forming more than 4,000 mutant materials and gaining more genetically insertable insertion points," he said. According to Zhou Ling, the insertion point of this gene mutant library has been opened to sharing with corn researchers around the world.
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