Search results for "MAMP"
showing 6 items of 16 documents
Caractérisation du mode d’action des rhamnolipides dans la défense des plantes et l’induction d’une résistance contre des agents phytopathogènes biot…
2013
National audience; Les rhamnolipides (RL) sont des glycolipides amphiphiles produits par différentes bactéries notamment du genre Pseudomonas et Burkholderia. Les RL comprennent généralement une chaîne d’acides gras couplée à un ou plusieurs rhamnoses. Il sont impliqués dans la formation de biofilms, dans la mobilité bactérienne et constituent, pour certaines bactéries, des facteurs de virulence (Vatsa et al. 2010). Nous avons montré que les RL sont perçus en tant qu’éliciteurs par les cellules de vigne et que cette reconnaissance provoque un influx de Ca2+, l’activation de plusieurs MAPK (Mitogen-Activated Protein Kinase), la production de formes actives de l’oxygène ainsi que l’expression…
Effect of commercially available Plant Defence Stimulators on human innate immunity
2015
PDS (Plant defence stimulators) constitute a recent alternative to pesticides used for crop protection. These compounds are of diverse nature, they all act by stimulating plant innate immune system and plants can better fight pathogens. There are many similarities in pathogen perception systems and cellular signalling in plants and animals. Many elicitors stimulate both human and plant innate immunity (Zipfel and Felix, 2005). Therefore, it is likely that human innate immunity could be modulated by PDS. The aim of this study is to evaluate pro/anti-inflammatory activity of five different commercially available PDS on human cell models. We studied the pro/anti-inflammatory effect of PDS on h…
Carbohydrates in plant immunity and plant protection: roles and potential application as foliar sprays.
2014
International audience; Increasing interest is devoted to carbohydrates for their roles in plant immunity. Some of them are elicitors of plant defenses whereas other ones act as signaling molecules in a manner similar to phytohormones. This review first describes the main classes of carbohydrates associated to plant immunity, their role and mode of action. More precisely, the state of the art about perception of "PAMP, MAMP, and DAMP (Pathogen-, Microbe-, Damage-Associated Molecular Patterns) type" oligosaccharides is presented and examples of induced defense events are provided. A particular attention is paid to the structure/activity relationships of these compounds. The role of sugars as…
PENINGKATAN KEMAMPUAN KOMUNIKASI MAHASISWA PADA MATA KULIAH MANAGEMEN PEMASARAN MENGGUNAKAN METODE KOOPERATIF TIPE JIGSAW
2020
Penelitian ini dilatarbelakangi rendahnya komunikasi menyampaikan gagasan/ide mahasiswa dalam proses pembelajaran di kelas pada mata kuliah Managemen Pemasaran. Tujuan penelitian ini untuk meningkatakan kemampuan komunikasi mahasiswa pada mata kuliah Managemen Pemasaran menggunakan metode Kooperatif tipe Jigsaw pada mahasiswa kelas IIA Prodi Managemen STIE Semarang Tahun Akademik 2019/2020. Subjek penelitian ini mahasiswa kelas IIA semester 4 Prodi Managemen dengan jumlah mahasiswa 40 orang terdiri dari 32 perempuan dan 8 laki-laki. Penelitian ini menggunakan metode Penelitian Tindakan Kelas (PTK) merujuk pada desain pola PTK menurut Kemmis & Taggart yang terdiri dari 3 siklus, masing-m…
Identification and characterization of the grapevine flagellin receptor vvfls2
2014
International audience
Perception of pathogenic or beneficial bacteria and their evasion of host immunity: pattern recognition receptors in the frontline
2015
International audience; Plants are continuously monitoring the presence of microorganisms to establish an adapted response. Plants commonly use pattern recognition receptors (PRRs) to perceive microbe- or pathogen-associated molecular patterns (MAMPs/PAMPs) which are microorganism molecular signatures. Located at the plant plasma membrane, the PRRs are generally receptor-like kinases (RLKs) or receptor-like proteins (RLPs). MAMP detection will lead to the establishment of a plant defense program called MAMP-triggered immunity (MTI). In this review, we overview the RLKs and RLPs that assure early recognition and control of pathogenic or beneficial bacteria. We also highlight the crucial func…