Report on the visit of Tang Qingbo and Xie Guiying to Italy to attend the International Conference

Report on Tang Qingbo and other two people from Plant Protection College of Henan Agricultural University attending the meeting in Italy

1、 Actual date of visit

September 14-22, 2019

2、 Composition of visiting delegation

Professor Tang Qingbo

Associate Professor Xie Guiying

3、 Basic information of the visit

Tang Qingbo and Xie Guiying from Henan Agricultural University attended the 16th European Symposium for insect taste and olfaction (Esito) in Villasimius, Italy from September 14 to 22, 2019.

The European Conference on insect taste and smell, held every two years, is a grand meeting on insect taste and smell. The 16th European Conference on insect smell and taste in 2019 was held in vilassimus, Italy from September 14 to 20, 2019, with more than 100 participants, mainly from Europe and Asia. Among them, 5 from Chinese mainland and 10 from Chinese. The topics of this conference include "receptor function", "chemical ecology", "vector insects", "mutation and plasticity", "taste", "odor regulation behavior", "development", "odor coding and circuit" and "evolution". Eight conference reports were invited from Germany, Britain, Canada, Sweden and other countries. Among them, R ö Professor ssler reported the latest progress in the evolution of olfactory circuits in ants. Amrein from the United States made a report on the molecular, cellular and developmental control of taste perception in Drosophila melanogaster.

The schedule of the meeting is from 16:00 to 18:00 on September 15, and the academic report exchange will begin on the evening of September 15. Two of us, as representatives of Henan Agricultural University, arrived at vilassimus on September 15 at 8:30 p.m. local time in Italy and registered on September 16. Because the plane was delayed for 2 hours, he was unable to attend the opening ceremony on the evening of September 15, and then attended the whole meeting according to the schedule. In this conference, the taste receptors and olfactory receptors were widely concerned, and the mechanism of how insects recognize odors and taste substances for selection was also widely concerned.

On the afternoon of September 21, he flew back to China and arrived at Zhengzhou Xinzheng airport on the evening of September 22, ending his visit and successfully completing the mission.

4、 Main achievements and gains

1. Professor Tang Qingbo's special report

Professor Tang Qingbo conducted academic exchanges through the wall newspaper, which belongs to the taste topic. The special wall newspaper exchange arranged by the conference was held on the afternoon of September 17, with a brief introduction at the meeting, followed by a two-hour display. Professor Tang Qingbo's wall newspaper is about the trade-off of the feeding and taste perception of two related species of Spodoptera

on sucroseand sinigrin in the feeding preference and gustatory perception in two species of Helicoverpa caterpillars）。 Two choice leaf disc assay and single sensillum recording were used to compare the behavior and taste "trade-off" of the two insects on the kinetin sucrose and the antifeedant glucosinolate. The results showed that sucrose could induce the feeding of both insects, while glucosinolates could inhibit the feeding. Both sucrose and Erucic glucoside could induce the responses of the corresponding taste neurons in the lateral suppository cones of the two insects. However, when sucrose and Erucic glucoside were mixed, the induced effects of sucrose and Erucic glucoside on the corresponding taste neurons counteracted each other, and the degree of counteraction varied with the concentration of the corresponding compounds in the mixture. The results are useful for understanding the relationship between insects and plants. Professor Tang Qingbo's wall newspaper was widely concerned and discussed by the participants.

2. Special report of Associate Professor Xie Guiying

The report of Associate Professor Xie Guiying belongs to the topic of "insect olfactory coding and circuit", which was held on the morning of September 19. At the meeting, Associate Professor Xie Guiying gave a speech entitled "anatomy of central nervous system of apolygus lucorum: brain components emphasize the importance of olfaction". This report introduces the anatomical structure of the central nervous system of Lygus lucorum in detail, especially the composition of the nerve marrow in the brain. The structure shows that the brain of Lygus lucorum has prominent antennal lobes and very small mushroom crown structure, which indicates that Lygus lucorum may have a very complex olfactory system. The report of Associate Professor Xie Guiying received attention and praise from the participants.

5、 Inspiration and suggestions

In this meeting, in addition to seriously reporting our work, we attended the whole meeting according to the schedule, carefully studying the research work of other representatives, and discussed with relevant experts during the rest time after the meeting. In addition, the presentation methods of other experts' reports and the production methods of slides are also deeply considered. What impresses us deeply is the comprehensive research and elaboration of the experts on Drosophila and mosquito from molecular, electrophysiological and behavioral aspects. It also shows that the research on insect olfaction and taste is of great significance for the future pest control.

6、 Matters need to be tracked and implemented in the later stage

nothing

7、 Publicity, clean government commitment, foreign affairs discipline and civilized visit

We have two people in our party. According to the publicity content of the visit, we strictly implement the visit plan, and the actual implementation is consistent with the plan. In the journey and process of participating in the conference, we should abide by the law, travel in a civilized way, and practice strict economy. Strictly implement the budget of the visit.

8、 Visit and share reports

On September 24, I had a discussion with the teachers and students of the insect brain and behavior laboratory in the Herbarium. I introduced my visiting situation and experience, and had an in-depth exchange on future English learning and scientific research direction.