[Opportunities, challenges and suggestions for the development of plastic degradation and recycling under the context of circular bioeconomy].

At present, the negative impact caused by white pollution has spread to all aspects of human society economy, ecosystem, and health, which causes severe challenges for developing the circular bioeconomy. As the largest plastic production and consumption country in the world, China has shouldered an important responsibility in plastic pollution control. In this context, this paper analyzed the relevant strategies of plastic degradation and recycling in the United States, Europe, Japan and China, measured the literature and patents in this field, analyzed the status quo of technology from the perspective of research and development trends, major countries, major institutions, and discussed the opportunities and challenges faced by the development of plastic degradation and recycling in China.

[Analysis and suggestions of current planning frameworks and the status of research on genetic technologies in China].

This article briefly introduces the strategic framework of genetic technology of Chinese government and Chinese Academy of Sciences, and the remarkable progress of genetic technology under this guidance. Using bibliometric and patent analysis methods, we reveal the current status of genetic technology research and development in China. China has made great achievements, both in terms of quantity and quality of academic publications, and quantity of patent applications.

Genetic determinants of symptoms on viral DNA satellites.

Begomovirus-DNA-beta disease complexes induce different symptom phenotypes in their hosts. To investigate the genetic determinants of the phenotypic differences, Nicotiana spp. and tomato plants were inoculated with infectious clones of Tobacco curly shoot virus (TbCSV)/TbCSV DNA-beta (TbCSB) and Tomato yellow leaf curl China virus (TYLCCNV)/TYLCCNV DNA-beta (TYLCCNB) pseudorecombinants and showed that TYLCCNB induced characteristic vein-thickening and enation symptoms, while TbCSB only slightly exacerbated the leaf-curling symptoms, regardless of the helper virus being used.