An international research team led by researchers from the University of Florida has completed the gene sequencing work on the trees of sweet orange and Clementine (a variety that is a hybrid of citrus and citrus), and has published related gene maps. This is the first time in a genus of fruit trees.
The researchers said that the publication of the gene map will help scientists find new ways to combat diseases including citrus yellow dragon disease (also known as yellow wilt, green fruit disease, which is extremely harmful to citrus), and help fruit farmers improve their fruits. Flavor and quality.
It is understood that citrus yellow dragon disease is a bacterial disease transmitted by insects. The diseased fruit is small or deformed, the fruit umbilical is skewed, the branches of the diseased fruit will show yellowing symptoms, and the severe ones will die within a few years. The disease is prevalent in Asia, Africa, the Arabian Peninsula and Brazil, and has also been found in Florida, USA since 2005.
Sequencing the genome will allow researchers to figure out the order of millions of genes. Scientists hope to use these data to produce transgenic citrus trees that are tastier, more nutritious, and more adaptable to environments such as temperature and soil. Geneticists had sequenced the DNA (deoxyribonucleic acid) of the citrus Huanglongbing virus in 2009 and hoped that the gene of its transmission vector, citrus psyllium, would be sequenced as soon as possible to effectively control this pest.
The genetic maps of these two fruit trees were announced at the International Plant and Animal Genome Conference held on Saturday. In addition to the University of Florida, scientists from Italy, Brazil, France, and Spain also participated in the study.
Dan Grant, executive general manager of the Florida State Citrus Research and Development Fund Corporation, was thrilled when he heard the news. He said that the publication of these two citrus gene maps will inevitably speed up the resolution of many problems that currently threaten citrus production. Mike Sparks, president of the Florida Citrus Growers Association, called the study an exciting breakthrough that will benefit the global citrus industry, including Florida, in the near future.
Citrus is one of the most widely planted fruit trees in the world. There are 135 countries in the world planting citrus with an annual output of 10.2822 million tons and an area of ​​10.73 million mu.
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