时    间：2023年12月13日 (星期三) 12:40-14:00

地    点：农生学院创新楼（B楼）104会议室

主办单位：农生学院学科与科技办、农生学院青年教师联谊会

报告题目：C₄光合作用的细胞分工特异调控

报告摘要：

C₄代表着陆地上一类高生产力植物，这归因于其相比C₃植物祖先更高的光、水和氮利用效率，以及叶肉细胞与维管束鞘细胞之间的特异协同作用。细胞分工促进了碳浓缩机制，提高了光合作用效率。C₄光合酶基因已存在于C₃植物中，所以其在C₄植物中的细胞差异性表达是核心。报告将基于研究组近期的玉米（单细胞）多组学成果，探讨转录因子在C₄植物不同细胞中的作用及其对高效光合作用的影响，揭示细胞间基因表达差异背后的分子调控机制。

报告人简介：

涂晓雨，上海交通大学农业与生物学院长聘教轨副教授，博士生导师，独立课题组组长。入选上海市“海外高层次人才引进计划”、广东省“珠江青年人才计划”、“交大2030计划”（C类）等。长期从事高光效植物功能基因组学研究，相关成果以第一/通讯作者发表在Nature Communications（2020、2022 & 2023)，Molecular Plant等国际期刊，其中3篇入选ESI高被引，2篇入选植物与农业领域热点论文；近三年主持国家自然科学基金面上项目和青年科学项目等9项。长期担任Nature Communications、Genome Biology、Horticulture Research等期刊审稿人。承担本科生《生物信息学》和研究生《表观遗传与基因组调控》课程教学。

【学科研究组研究方向】：

植物功能基因组学

【代表性著作】：

1. Tu, X., Ren, S., Shen, W., Li, J., Li, Y., Li, C., Li, Y., Zong, Z., Xie, W., Grierson, D., Fei, Z., Giovannoni, J., Li, P., Zhong, S.; Limited conservation in cross-species comparison of GLK transcription factor binding suggested wide-spread cistrome divergence, Nature Communications, 2022, 13:7632 (Plants and Agriculture领域Featured Article)
2. Tu, X., Mejía-Guerra, M.K., Valdes Franco, J.A., Tzeng, D., Chu, P., Shen, W., Wei, Y., Dai, X., Li, P., Buckler, E.S., Zhong, S.; Reconstructing the maize leaf regulatory network using ChIP-seq data of 104 transcription factors, Nature Communications, 2020, 11:5089
3. Tu, X., Marand, A.P., Schmitz, R.J., Zhong, S.; A combinatorial indexing strategy for low-cost epigenomic profiling of plant single cells, Plant Communications, 2022, 3:100308

4. Zhang, Y., Ma, M., Liu, M., Sun, A., Zheng, X., Liu, K., Yin, C., Li, C., Jiang, C., Tu, X. (共同通讯), Fang, Y.; Histone H2A monoubiquitination marks are targeted to specific sites by cohesin subunits in Arabidopsis, Nature Communications, 2023, 14:1209 (Plants and Agriculture领域Featured Article)

ACADEMIC SALON (XLVIII)

SPEAKER: Xiaoyu Tu

Associate Professor, Department of Plant Science, SAB

TIME ：12:40-14:00 December 13th, 2023 (Wed)

VENUE：Room 104, Building B, SAB

ORGANIZER：Office of Discipline and Science & Technology, SAB;

Young Teachers Association, SAB

TITLE： 

Cell-Specific Regulatory Dynamics underlying C₄ Photosynthesis

ABSTRACT：

C₄ plants epitomize a category of terrestrial flora renowned for their superior efficiency in utilizing light, water, and nitrogen relative to their C₃ counterparts, a trait further amplified by the compartmentation between mesophyll and bundle sheath cells. This cellular differentiation significantly bolsters the carbon concentration mechanism, thereby enhancing photosynthetic productivity. Intriguingly, the genes encoding C₄ photosynthetic enzymes, though inherent in their C₃ ancestors, assume pivotal importance in C₄ plants due to their distinct expression patterns. This talk will delve into our group's latest maize (single-cell) multi-omics study, scrutinizing the role of transcription factors in the distinct cellular environments of C₄ plants. It aims to discuss the impact of these factors on photosynthetic efficiency, exploring the underlying genetic and epigenetic regulatory mechanisms that govern the variances in gene expression across different cell types.