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BẢN TIN THỨ TƯ 14-9-2022
BẢN TIN THỨ TƯ 14-9-2022
Bản tin số 1
International Workshop to Tackle Regulatory Approaches for Animal Biotech
 
The 4th International Workshop on Regulatory Approaches for Agricultural Applications of Animal Biotechnologies will take place in São Paulo, Brazil, on September 12-16, 2022. Topics to be discussed include animal breeding, animal biotechnologies in the pipeline, biosafety and regulatory approaches, and risk assessment.
The event is organized by the U.S. Department of Agriculture, Inter-American Institute for Cooperation on Agriculture, ISAAA Inc., ISAAA AfriCenter, VirginiaTech, Agriculture and Food Systems, and Universidade de São Paulo.
The sessions will start at 8:30 AM UTC/GMT-3 and will also be available via Zoom (Webinar ID: 826 5885 3967 | Passcode: 768117). Get more updates by signing up here.
 
Bản tin số 2
Malaria Vaccine with Engineered Parasites Shows Positive Results in Small Trial
Researchers from Seattle Children's Research Institute reported the promising results of a small experimental trial of a malaria vaccine. The vaccine contains living parasites weakened by the deletion of three key genes that are essential for it to leave the liver and infect blood cells. Genetically engineered parasites cannot cause severe disease, nor can they be passed on to other people. The researchers used CRISPR to modify the parasites.
The team administered the vaccine to 16 volunteers by allowing them to be bitten at least 200 times on 3 to 5 occasions by mosquitoes infected with the GE parasite. When the volunteers were eventually exposed to mosquitoes with unmodified parasites, half of them did not show signs of blood-stage infections.
“Our hope is that this vaccine will give very potent protection, 100 percent hopefully for at least six to 12 months,” said Stefan Kappe, leader of the study.
Read the original article from New Scientist.
BẢN TIN KHOA HỌC
Outbreak of Rice Blast Disease at Yeoju of Korea in 2020
Plant Pathol J.; 2022 Feb;38(1):46-51. doi: 10.5423/PPJ.NT.08.2021.0130. Epub 2022 Feb 1.
Abstract
Rice blast is the most destructive disease threatening stable rice production in rice-growing areas. Cultivation of disease-resistant rice cultivars is the most effective way to control rice blast disease. However, the rice blast resistance is easy to breakdown within years by blast fungus that continually changes to adapt to new cultivars. Therefore, it is important to continuously monitor the incidence of rice blast disease and race differentiation of rice blast fungus in fields. In 2020, a severe rice blast disease occurred nationwide in Korea. We evaluated the incidence of rice blast disease in Yeoju and compared the weather conditions at the periods of rice blast disease in 2019 and 2020. We investigated the races and avirulence genes of rice blast isolates in Yeoju to identify race diversity and genetic characteristics of the isolates. This study will provide empirical support for rice blast control and the breeding of blast-resistant rice cultivars.
KJ and KI race differentiation of the Yeoju isolates. Race diversity of the Yeoju isolates belonging to KJ race and KI race.

 
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