Host-parasite
interaction between a young pine tree and the fungal species Armillaria ostoyae -
This interaction corresponds to one link in the network represented
below.
Ecological network
between tree
species and
parasitic fungal species in the French forests - This
network is
complex but it represents only a small proportion of the interactions
involving trees.
A beech leaf - The
canopy of a single beech tree hosts several hundreds of
fungal species.
It also hosts bacteria, insect herbivores and their parasitoids... Most
of my work focuses on these numerous and complex interactions between
trees and other organisms.
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Dr.
Corinne
VACHER
Researcher in Ecology
Contact details
Education & Positions
- Since 2009 - Permanent staff researcher
(CR1) at INRA
- 2001-2004 - Doctorate
of Science in Ecology and Evolution,
University of
Montpellier, France
- 1998-2001 - Ecole
Normale Supérieure, Cachan, France
Current research topics
- Ecological
networks - The diversification of species and their
interactions during the course
of evolution has produced ecological networks with complex
topologies.
The aim of my work is to better understand the mechanisms underlying
such topologies.
- Microbial
communities -
Phyllosphere, the habitat provided by the leaves of living plants, is
one of the largest microbial habitat on Earth. It supports diverse and
complex microbial communities, including many genera of bacteria and
fungi. The aim of my work is to better understand the mechanisms
underlying the diversity and composition of these microbial communities.
Current students
- Tristan
Cordier (PhD
student, 2008-present) : Effect of climate change on the diversity and
composition of fungal assemblages associated with European beech (Fagus sylvatica) -
Advisor: M.L. Desprez-Loustau, Co-advisors: C. Robin, C.
Vacher
- Jean-Benoist
Leger
(PhD student, 2010-present) : Modelling the topology of ecological
networks with statistical models for heterogeneous random graphs -
Advisor: J-J. Daudin, Co-advisor: C.
Vacher
- Boris Jakushkin (PhD
student, 2011-present) : Effect of intra-specific genetic variation in pedunculate oak (Quercus robur) on the diversity and
composition of associated microbial communities -
Advisor: C. Robin, Co-advisors: V. Fievet, C. Vacher
Previous research topics
- Resistance
evolution to pesticides and drugs
- Gene flow
between crops and weeds
Publications
Submitted
- Leger, J-B., Vacher C, Daudin, J-J. Detection of topologically homogeneous subsets in graphs (submitted)
2012
- Cordier,
T., Robin, C., Capdevielle, X., Desprez-Loustau, M-L., Vacher C.
2012. Spatial variability of phyllosphere fungal assemblages: genetic
distance predominates over geographic distance in a European beech
stand (Fagus sylvatica L.). Fungal
Ecology, in press
2010-2011
- Philibert,
A., Desprez-Loustau, M-L., Fabre, B., Frey, P.,
Halkett,
F., Husson, C., Lung-Escarmant, B., Marçais, B. Robin, C., Vacher, C.,
Makowski, D. 2011.
Predicting invasion success of forest pathogenic fungi from species
traits. Journal
of Applied Ecology 48(6): 1381-1390
- Vacher, C.,
Kossler, T. M., Hochberg, M., Weis, A.E. 2011. Impact
of Interspecific Hybridization between Crops and Weedy Relatives on the
Evolution of Flowering Time in Weedy Phenotypes. PloS
ONE 6(2): e14649
- Daudin,
J-J., Pierre, L., Vacher,
C. 2010.
Model for heterogeneous random networks using continuous variables and
an application to a tree-fungus network. Biometrics
66:1043-1051.
- Vacher,
C., Daudin, J-J., Piou, D., Desprez-Loustau, M-L.
2010.
Ecological integration of alien species into a tree-parasitic fungus
network. Biological
Invasions 12:3249-3259.
- Mariadassou,
M., Robin, S., Vacher, C.
2010.
Uncovering latent structure in valued graphs: a variational approach. Annals
of Applied Statistics 4(2):715-742.
- REX
Consortium. 2010.
The skill and style to model the evolution of resistance to
pesticide and drugs. Evolutionary
Applications 3(4): 375-390.
2007-2008
- Vacher,
C., Vile, D., Helion, M. Piou, D., Desprez-Loustau, M-L. 2008.
Distribution of parasitic fungal species richness: influence
of climate versus
host species diversity. Diversity and
Distributions 14(5):786-798
- Vacher,
C., Piou, D., Desprez-Loustau, M-L. 2008. Architecture
of an antagonistic tree/fungus network: the asymmetric influence of
past evolutionary history.
PloS
ONE 3(3):e1740.
- REX
Consortium. 2007.
Structure of the scientific community
modelling the evolution of pesticide and drug resistances. PloS ONE
2(12):e1275
2005-2006
- Vacher,
C., Bourguet, D.,
Desquilbet, M., Lemarié, M., Ambec, S. and M.E. Hochberg. 2006. Fees or refuges: which is
better for the sustainable management of
insect resistance to transgenic Bt
corn? Biology
Letters 2: 198-202
- Vacher, C., Brown, S. and M.E. Hochberg.
Avoid, attack or
do both? Behavioral and physiological adaptations in natural enemies
faced with
novel hosts. 2005. BMC
Evolutionary Biology
5: 60
- Weis,
A.E., Winterer, J. A., Vacher,
C.,
Freshwater, M., Kossler, T.M., Young, C.A. and G. LeBuhn. 2005.
Phenological assortative mating: the nature and consequences
of its frequency-dependance. Evolutionary Ecology
Research 7:
161-181.
2003-2004
- Vacher,
C.,
Weis, A.E., Hermann, D., Kossler, T.M., Young,
C. and M.E. Hochberg. 2004. Impact of ecological factors
on the initial
invasion of Bt transgenes into wild populations. Theoretical
and
Applied Genetics 109: 806-814
- Vacher,
C.,
Bourguet, D., Rousset, F., Chevillon, C. and
M.E. Hochberg. 2004. High dose
refuge strategies and genetically modified crops – Reply to
Tabashnik et al. Journal of Evolutionary
Biology 17: 913-918
- Vacher,
C.,
Bourguet, D., Rousset, F., Chevillon, C. and
M.E. Hochberg. 2003. Modelling the
spatial configuration of refuges for a sustainable control of pests:
the case
of Bt cotton. Journal of Evolutionary
Biology 16: 378-387
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