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SUMMARY:Plenary Lecture 9: Structure and functions of the bacterial phyllo
 sphere microbiota - Vorholt\, J (ETH Zrich)
DTSTART:20140911T105500Z
DTEND:20140911T113000Z
UID:TALK54158@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The aerial parts of the plants\, which are dominated by leaves
 \, represent one of the largest terrestrial habitats for microorganisms. T
 his habitat\, called the phyllosphere\, is occupied by a diverse community
  of microorganisms\, which is important for plant health and growth. Most 
 of the phyllosphere inhabitants are not well investigated\; however\, ther
 e is a growing interest to study commensal bacteria to elucidate their int
 eractions with the plants\, among each other and to learn how they withsta
 nd the hostile conditions of their habitat. A predominance of Proteobacter
 ia\, Actinobacteria and Bacteroidetes living in the phyllosphere of numero
 us plants has been revealed\, while metagenomics and metaproteomics approa
 ches gave insights into the general bacterial adaptation strategies to the
  phyllosphere. Complementary to these cultivation-independent approaches w
 e established a comprehensive strain collection which covers a broad diver
 sity of strains colonizing the model plant Arabido psis thaliana. Targeted
  studies with model strains allowed us to identify metabolic traits import
 ant for plant colonization and to uncover a novel bacterial regulatory sys
 tem essential for plant colonization which is responsible for the general 
 stress response in Alphaproteobacteria. The establishment of a gnotobiotic
  system led to the identification of plant probiotic effects of commensal 
 bacteria and candidate genes for plant protection against bacterial pathog
 ens. Moreover\, the experimental system paired with synthetic bacterial co
 mmunities helped identifying plant genes involved in shaping the bacterial
  community structure. \n
LOCATION:Seminar Room 1\, Newton Institute
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