Blue Mountains, New South Wales, Australia
Blue Mountains, New South Wales, Australia
Baie des tortues, New Caledonia, France
Baie des tortues, New Caledonia, France

Open call for post-doctoral research application at University of Bordeaux

Open call for post-doctoral research application at University of Bordeaux

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We are looking for a motivated postdoc who wants to apply for a 2yrs Idex postdoc proposal. deadline around mid-November 2018. please have a look Post-doc call 2018

All facilities are available at the lab: Cavitron, optical technique, mcircoCT observations, forests and sand beaches

Cavitron-conifersDunePyla

Drought will not leave your glass empty!

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Long-term measurements in two of the world’s top wine regions evidence that xylem embolism does not occur routinely in grapevine.
link

 

safety margin

 

 

 

 

 

 

 

 

press release: here
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Plant resistance to drought depends on timely stomatal closure

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Here is a post about our recent publication investigating the link between stomatal closure and embolism resistance

 

co-authors: Nicolas Martin-StPaul and Hervé Cochard

Main output: All species close stomata before -4MPa: read the paper here

ecol lett

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aridity drove the evolution of extreme embolism resistance and the radiation of conifer genus Callitris.

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Our results provide strong evidence that the evolution of extreme xylem embolism resistance accompanied the radiation of the Callitris clade and was driven by the aridification of the Australian continent during the last 30 million yr. link

NP cal

MICRO CT Beamline

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Microcomputed tomography (microCT) analysis is a powerful tool for the evaluation of plant hydraulic safety

Our Synchrotron world tour

Bean on

SOLEIL (Paris synchrotron) in 2015-2016

DLS (Diamond Light Source) in February 2013 link

ESRF (European Synchrotron Radiation Facility) in October 2012 link

SLS (Swiss Light Source) in September 2012 and September 2011 link

Oak: xylem pressure = -1MPaOak no embolism Oak: xylem pressure = -6MPaOak embolismt
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SLS 2012

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Refilling in Vitis via root pressure

SOLEIL IMG_20160528_165529

 

 

INRA Laurel Wreath for Excellence

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I was awarded the INRA Laurel Wreath for Excellence by Thierry Mandon, French Minister of State for Higher Education and Research, and François Houllier, President of INRA in December 2015, after selection by an international committee. This early career award was obtained for my work on resistance to drought in trees, within the broader scope of research on the adaptation of forests to climate change.

Tackling drought, root and branch

video

Le Monde

 

Article: Le monde

 

 

Leaf hydraulics

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Leaf hydraulics:  wicked easy (Fingers in the nose)

 

Visualizing embolism in Laurel leaves

Bruny island 2016

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By imaging a laurel leaf at 3 min intervals and by subtracting the difference between the images to see where an embolism formed, we were able to determine at which water potential laurel leaves cavitate. Images were colorized by how much time had elapsed and combined to give a complete picture of the plant’s response to water stress.

 

This new technique to measure resistance to water stress was developped by Brodribb et al (2016) and is now running at the GENOBOIS Platform Caviplace.

 

This study was conducted by Déborah Corso, Laurent J Lamarque, Gaëlle Capdeville, José Manuel Torres Ruiz, Régis Burlett and Sylvain Delzon.

 

It has been carried out with financial support from the French National Research Agency (ANR) in the frame of the Investments

for the future Programme, within the Cluster of Excellence COTE (ANR-10-LABX-45).

 

 

 

 

MEGA CAVITRON: CAVI1000

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The big one is ready

photo 2

 

 

Coming soon!!!

CAVI1000

CAVI1000-max-popo

We might be able to measure 1m long samples; but not so sure… if not Jarmila suggested to put in on wheels, drag it to the town square and charge admission for rides!

Courses

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Have a look through this great courses on the science of evolution. link

Evolution does not work this way.

 

Vulnérabilité des arbres à la sécheresse

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news:

Les arbres disposent d’une faible marge de manœuvre face à la sécheresse, publiée dans la revue Nature le 21 novembre 2012.

Risky business: drought stretches tree plumbing to its limits, recently published in Nature (pdf).

Synthèse à partir de 226 espèces réalisée par 24 scientifiques du monde entier –  (voir communiqué de presse)

Vidéo France 3 : Le stress des arbres. link

Vidéo INRA : Vulnérabilité des arbres à la sècheresse. link

Vulnérabilité des forêts du globe face à la sécheresse – Les arbres ont atteint leur seuil de rupture hydraulique from INRA Bordeaux on Vimeo.

Vulnérabilité des forêts du globe face à la sécheresse – Les arbres ont atteint leur seuil de rupture hydraulique from basco on Vimeo.

 

Nous organisons une conférence pour les Bordelais qui travaillent sur la résistance au stress hydrique chez les plantes intitulée “De l’eau dans le Bordeaux”. Programme

lm.sanchez.free.fr