Comparison of Tissue Transglutaminase Activity During Young Panicle Development in Honglian-type Cytoplasmic Male Sterile Rice

To investigate the changes of tissue transglutaminase activity, the leaves and young panicles of rice at different developmental stages were excised from the Honglian-type cytoplasmic male sterile line, Yuetai A and its maintainer line, Yuetai B, respectively. An ELISA measurement protocol for tissue transglutaminase activity detection in rice was well established. The results indicated that the tissue transglutaminase activity was regulated positively by calcium cation, and the tissue transglutaminase activity in senescent leaves was remarkably higher than that in young leaves. No distinct difference was noted between Yuetai A and Yuetai B. Moreover, from the tetrad to binucleate stages the tissue transglutaminase activity increased gradually with the progression of the young panicle development and up to maximum at binucleate stage in Yuetai A. However, no similar changes were observed in Yuetai B. This indicates that the tissue transglutaminase is involved in cell programmed death in abortive pollen.

上海CBD地区静态交通智慧化管理的探索与实践

立足上海中央商务区CBD地区静态交通智慧化工程的建设和管理,借助大数据、云计算、物联网等信息技术,搭建城市静态交通综合管理平台。以"流程、标准、体系、生态"为原则,从数据监控、业务管理、服务运营和数据决策等4个维度提出城市CBD静态交通发展思路。以上海市徐汇区为例,总结系统平台在建、管、用等方面的实践经验,提升静态交通精细化管理水平,为"智慧城市"建设、管理及服务提供重要支撑。

丹霞山旅游发展现状、困境及建议

丹霞山是丹霞地貌中最璀璨的一颗明珠,也是当地旅游产业中当之无愧的招牌景点。虽然当前丹霞山的发展取得了不错的成绩,但是在发展过程中,也暴露了知名度不足、景区软硬件设施配置不足、旅游资源浪费严重、"大丹霞"旅游经济圈建设进展不理想、内部管理结构不合理等问题。针对以上问题,当地政府应该加强统筹规划和内部协调工作,依托当地及自身优势,打造"旅游+"项目且对景区内部进行精细化改造。

里水河水污染评价分析及防治对策

基于2016年9月至2018年8月的广东省佛山市境内里水河水质污染超标部分进行分析,得出了里水河水质评价及污染物相关特征,并提出了相应的防治对策。结果表明:里水河水质污染超标情况普遍;超标的项目有氨氮、总磷、溶解氧、生化需氧量(BOD)、化学需氧量(COD),其中氨氮和总磷为主要污染物;里水河的污染有向复杂化、多样化的趋势发展。