时间：2022年5月13日（星期五）8:30-9:50  

会议号：腾讯会议887 640 142

主 办：华中农业大学、湖北洪山实验室

承 办：园艺林学学院 

报告人1：朱峰8:30-9:10  

题目：柑橘果实成熟衰老调控机制及潜在应用

The regulatory mechanism and potential applications of citrus fruit ripening and senescence

摘要：柑橘是我国第一大水果，其果实成熟衰老的机制有别于拟南芥等模式植物，也不同于水稻等大田作物及番茄和苹果等呼吸跃变型果实，相关研究基础十分薄弱。因此，我们借鉴模式植物研究体系，整合基因组学、转录组学、代谢组学及分子生物学技术，系统解析了柑橘果实成熟衰老过程中CrMYB68、CrNAC036及CsMYB96对果面色泽、ABA合成及水分代谢的转录调控机制；揭示了代谢物再循环对延缓植物成熟衰老的重要作用；探究了水杨酸、油菜素内酯及发汗处理等保鲜处理对延缓柑橘果实采后衰老的调控机制。以上研究结果为柑橘采后生物学研究与保鲜技术研发提供了重要的理论依据，同时丰富了学界对非跃变型果实成熟衰老生物学的认识。

Citrus is the largest fruit industry in our country. The regulation mechanism of citrus fruit ripening and senescence is different from Arabidopsis and climacteric fruits such as tomato and the relevant research is limited. Therefore, we have integrated genomics, transcriptomics, metabolomics and molecular biology methods to systematically analyze the transcriptional regulation of CrMYB68, CrNAC036 and CsMYB96 on flavedo color, ABA synthesis and water metabolism during citrus fruit ripening and senescence; the important role of metabolite recycling against plant senescence; and explored the regulatory mechanism of salicylic acid, brassinolide and sweating treatment on delaying postharvest senescence of citrus fruits. These results provide an important theoretical basis for the research about postharvest biology and development of preservation technology for citrus fruit, and also enrich the knowledge about the ripening and senescence of non-climacteric fruit.

报告人2：毕红杰9:10-9:50  

题目：3D打印木质复合材料功能研究

Research on 3D printing Lignocellulosic Functional composites

摘要：随着环境和能源问题的日益突出，将价格低廉的可再生木质资源材料作为增强填料开发新型木质/聚合物复合材料，已成为世界能源可持续发展的趋势。3D打印技术是制造业领域的一种新兴工艺，在制造个人定制及复杂结构制品方面拥有显著优势，为木质复合材料的高值化及多元化利用提供了机遇。为了高效利用生物质资源及开发功能性3D打印材料，本研究采用杨木粉、纤维素纳米晶体（CNC）等生物质材料填充热塑性聚氨酯（TPU）构建了具有柔性、自修复特性的光热响应形状记忆3D打印复合材料。系统地探讨了适用于熔融沉积成型（FDM）3D打印技术的木质/TPU复合材料的设计方案和界面调控方法；通过将生物质材料、TPU及聚己内酯（PCL）共混，研究制备出了形状记忆性能优异的3D打印复合材料，分析了复合材料形状记忆功能的形成机制；探究了CNC增强TPU/PCL共混聚合物复合材料的成型技术及作用机理，解析了加入碳纳米管后TPU/PCL复合材料的光响应形状记忆功能，为制备高性能的功能性聚合物复合材料提供了一种新的研究思路和方法。

With the increasingly prominent environmental and energy problems, the development of new biomass/polymer composites with low-cost renewable biomass materials as reinforced fillers have been become the trend of sustainable energy development in the world. 3D printing technology is an emerging process in the manufacturing industry, with unique advantages in the fabrication of personal customization and complex structural products. It provides opportunities for the high value and diversified utilization of biomass composites. To efficiently utilize biomass resources and develop functional 3D printing materials, thermoplastic polyurethane elastomer (TPU) was filled with biomass materials such as poplar wood flour and cellulose nanocrystals (CNC) to construct a series of flexible, photothermal stimulus responsive shape memory and self-healing 3D printing smart composites. In this study, the construction scheme and interface control method of biomass/TPU composites suitable for fused deposition modeling (FDM) 3D printing technology were systematically discussed. The biomass material, TPU and polycaprolactone (PCL) were mixed together to prepare a 3D printed composites with excellent shape memory performance, and the mechanism of its shape memory function was studied. The forming technology and mechanism of CNC reinforced TPU/PCL shape memory polymer composites were investigated, and the photoresponsive shape memory function of TPU/PCL composites with carbon nanotubes was analyzed, which provided a new research idea and method for the preparation of high-performance functional polymer composites.