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Last Activity

Id VisitTime IPAddress Area
17360911 2017-11-25 54.144.57.183 美国
17360907 2017-11-25 54.144.57.183 美国
17360536 2017-11-25 124.105.67.241 菲律宾
17293064 2017-11-23 54.162.139.105 美国
17283438 2017-11-22 203.208.60.239 北京市
17184249 2017-11-20 5.235.104.230 欧洲和中东地区
17174602 2017-11-19 41.219.52.178 塞内加尔
17166107 2017-11-19 5.9.18.7 欧洲和中东地区
17148184 2017-11-18 40.77.167.108 美国
17145235 2017-11-18 183.224.81.196 中国
17144232 2017-11-18 203.208.60.238 北京市
17142781 2017-11-18 173.24.32.220 美国
17131654 2017-11-18 203.208.60.242 北京市
17124898 2017-11-17 134.100.90.42 德国
17085686 2017-11-16 79.137.116.219 意大利

Research

Molecular recognition of plant-microbe interaction

                                                                                                                               

                                                                 

Project  I: Chitooligosaccharide (COs) and Lipochitooligosaccharide (LCO) recognition

Chitin is the second most abundant polysaccharide in nature, found in crustacean shells, insect exoskeletons and fungal cell walls, and it is a β1-4 linked polymer of N-acetyl-D-glucosamine (GlcNAc). In this unmodified form, chitooligosaccharides [degree of polymerization (dp)=6-8)] are strong inducers of plant innate immunity. In contrast, when these chitooligosaccharides are acylated (so called lipochitooligosaccharides, LCO) and further modified they can act as Nod factors, the key signaling molecules that play an important role in the initiation of the legume-rhizobium symbiosis. In a similar form, these molecules can also act as Myc factors, the key signaling molecules involved in the arbuscular mycorrhiza (AM) symbiosis. The structural similarity between Nod/Myc factors and chitin raises the question how these similar molecules could induce apparently opposite responses in plants.
Project II: Lipopolysaccharides (LPS) recognition
Lipopolysaccharides (endotoxin) is abundant in the outer cell envelope of Gram-negative bacteria. In pathogenic bacteria, LPS acts as a MAMP that induces plant innate immune responses in various plant species, whereas rhizobial LPS might have been modified to adapt to the establishment of symbiotic relationship with legume species. Our lab will try to understand how plants recognize pathogenic LPS and how legumes have evolved to recognize rhizobial LPS.