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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Logo Principal UB AgroSup CNRS



Chargée de Recherche
Team : EcoLeg
email :

Curriculum Vitae

Present: Research Scientist. Plant Ecophysiology.

Appointed in November 2018 

Location: Joint research unit Agroécologie,  INRAE  Dijon.

Research topic: Ecophysiology of interactions between legumes and soil microbial communities. Cost and benefits of rhizodeposition.

2014 –2018: Postdoctoral fellow. Plant Ecophysiology.

Location: University of California, Davis (USA). Department of Plant Sciences.

PI: Prof. Maciej Zwieniecki

Research topic: Winter biology and non-structural carbohydrate management in trees. Effect of warm winters on dormancy and spring bloom of trees.

2010 – 2013: Ph.D. Plant Molecular Physiology and Genetics.

Location: Joint research unit INRA – Blaise Pascal University, Physics and Physiology of Fruit and Forest Trees (France) and Ulm University (Germany).

PI: Dr. Stephane Herbette and Prof. Steven Jansen

Thesis: Physics and molecular biology of xylem vulnerability to cavitation.

Research topic: Responses of trees to drought stress, focus on water transport.


Research Interest

I am an ecophysiologist interested in the interactions between legumes root and soil microbial communities. My goal are to (1) characterize rhizodeposition fluxes and (2) identify the mechanisms that modulate these fluxes in response to environmental conditions and as a function of crop genotype. The combination of these approaches aims to (3) build a mechanistic understanding of rhizodeposition and its trade-off with productivity and resilience in the whole rhizosphere – plant continuum. On-going research efforts focus on axis (1), while methods are currently developed for axis (2) which will be pursued later.

Previous experiences

My Ph.D. project focused on the physical and molecular bases of the vulnerability of plants to cavitation during drought episodes.

My postdoctoral experience focused on non-structural carbohydrate (NSC) storage in wood and its implications during dormancy and spring resumption of growth.



Tixier A, Guzman-Delgado P, Sperling O, Amico Roxas A, Laca E, Zwieniecki MA (2020). Comparison of phenological traits, growth patterns and seasonal dynamics of non-structural carbohydrate in Mediterranean tree crop species. Scientific report.

Sperling O, Kamai Tamir, Tixier A, Davidson A, Jarvis-Shean K, Raveh E, Dejong TM, Zwieniecki MA (2019). Predicting bloom dates by temperature mediated kinetics of carbohydrate metabolism in deciduous trees. Agricultural and Forest meteorology.

Godfrey J, Ferguson L, Sanden B, Tixier A, Sperling O, Grattan SR, Zwieniecki MA (2019). Sodium interception by xylem parenchyma and chloride recirculation in phloem may augment exclusion in the salt tolerant Pistacia genus: context for salinity studies on tree crops. Tree physiology. 10.1093/treephys/tpz054

Tixier A, Gambetta GA, Godfrey J, Orozco J, Zwieniecki MA (2019). Non-structural carbohydrates in dormant perennials; the tale of winter survival and spring arrival. Frontiers in Forest and Global change. 10.3389/ffgc.2019.00018

Tixier A, Orozco J, Amico Roxas A, Earles J, Zwieniecki MA (2018). Diurnal variation in non-structural carbohydrate storage in trees: remobilization and vertical mixing. Plant physiology.  

Valdebenito D, Farías D, Lampinen B, Tixier A, Zwieniecki MA, Saa S (2018). The position in the canopy and the bearing status of one-year-old shoots affects the bearing potential and morphology of current year shoots in walnuts (Juglans regia L.) cv. Chandler". Trees, Structure and Function.

Fernandez E, Baird G, Farias D, Oyanedel E, Olaeta J, Brown P, Zwieniecki MA, Tixier A, Saa S (2018). Fruit load in almond spurs define starch and total soluble carbohydrate concentration and therefore their survival and bloom probabilities in the next season. Scientia Horticulturae. Doi: 10.1016/j.scienta.2018.04.030.

Earles J, Knipfer T, Tixier A, Orozco J, Reyes C, Zwieniecki MA, Brodersen C, McElrone A (2018). In-vivo quantification of plant starch reserves at micrometer resolution using X-ray microCT imaging and machine learning. New Phytologist. Doi: 10.1111/nph.15068.

Allario T, Tixier A, Awad H, Brunel N, Badel E, Barigah TS, Julien JL, Peyret P, Mellerowicz EJ, Cochard H, Herbette S (2018). PtxtPME1 and homogalacturonans influence xylem hydraulic properties in poplar. Physiologia Plantarum. Doi: 10.1111/ppl.12702.

Park K, Tixier A, Christensen A, Arnbjerg-Nielsen S, Zwieniecki MA, Kaare J (2017). Viscous flow in a soft valve. Journal of Fluid Mechanic. Doi:10.1017/jfm.2017.805.

Tixier A, Amico Roxas A, Godfrey J, Saa S, Lightle D, Lampinen B, Zwieniecki MA (2017). Role of Bark Color on Stem Temperature and Carbohydrate Management during Dormancy Break in Walnut. Journal of the American Society for Horticultural Sciences. Doi: 10.21273/JASHS04216-17.

Sperling O, Silva L, Tixier A, Théroux-Rancourt G, Zwieniecki MA (2017) Temperature gradients assist carbohydrate allocation within trees. Scientific Reports. Doi: 10.1038/s41598-017-03608-w.

Tixier A, Sperling O, Orozco J, Lampinen B, Amico Roxas A, Saa S, Earles JM, Zwieniecki MA (2017) Spring bud growth depends on sugar delivery by xylem and water recirculation by phloem Münch flow in Juglans regia. Planta. Doi: 10.1007/s00425-017-2707-7.

Valdebenito D, Farías D, Oyanedel E, Castro M, Lampinen B, Tixier A, Saa S (2017) The morphology of a Walnut (Juglans regia L.) shoot is affected by its position in the canopy and correlated to the number and size of its fruits. Scientia Horticulturae. Doi: 10.1016/j.scienta.2017.03.046.

Valdebenito D, Tombesi S, Tixier A, Lampinen B, Brown P, Saa S (2017). Spur Behavior in Almond Trees (Prunus dulcis Mill.): Effects of Flowers, Fruit, and “June drop” on Leaf Area, Leaf Nitrogen, Spur Survival and Return Bloom. Scientia Horticulturae. Doi: 10.1016/j.scienta.2016.11.050 

Zwieniecki MA, Tixier A, Sperling O (2015). Temperature-assisted redistribution of carbohydrates in trees. American Journal of Botany. Doi:10.3732/ajb.1500218.

Tixier A, Herbette S, Jansen S, Capron M, Tordjeman P, Cochard H, Badel E (2014). Modelling the mechanical behaviour of pit membranes in bordered pits with respect to cavitation resistance in angiosperms. Annals of Botany. Doi:10.1093/aob/mcu109.

Dusotoit-Coucaud A, Brunel N, Tixier A, Cochard H, Herbette S (2014). Hydrolase treatments help unravel the function of intervessel pits in xylem hydraulics. Physiologia Plantarum. Doi:10.1111/ppl.12092.

Tixier A, Cochard H, Badel E, Dusotoit-Coucaud A, Jansen S, Herbette S (2013). Arabidopsis thaliana as a model species for xylem hydraulics: does size matter? Journal of Experimental Botany. Doi:10.1093/jxb/ert087.

Tixier A, Badel E, Franchel J, Lakhal W, Leblanc-Fournier N (2013). Growth and molecular responses to long-distance stimuli in poplars: bending vs flame wounding. Physiologia Plantarum. Doi:10.1111/ppl.12089.

Lens F, Tixier A, Cochard H, Sperry JS, Jansen S, Herbette S (2013). Embolism resistance as a key mechanism to understand adaptive plant strategies. Current Opinion in Plant Biology. Doi:10.1016/j.pbi.2013.02.005.

Awad H, Herbette S, Brunel N, Tixier A, Pilate G, Cochard H, Badel E (2012). No trade-off between hydraulic and mechanical properties in several transgenic poplars modified for lignins metabolism. Environmental and Experimental Botany. Doi:10.1016/j.envexpbot.2011.11.023.

Déon M, Scomparin A, Tixier A, Mattos CRR, Leroy T, Seguin M, Roeckel-Drevet P, Pujade-Renaud V (2012). First characterization of endophytic Corynespora cassiicola isolates with variant cassiicolin genes recovered from rubber trees in Brazil. Fungal Diversity. Doi:10.1007/s13225-012-0169-6.



Bastiaanse H, Theroux-Rancourt G, Tixier A (2017). Section 4: Functional and comparative genomics. Chapter 15: Abiotic Stress. In Andrew Groover and Quentin Cronk, (Ed.) Comparative and Evolutionary Genomics of Angiosperm Trees. Springer.



Salon C, Bourion V, Jeudy C, Moreau D, Prudent M, Tixier A, Voisin AS, Zancarini A (2019). From simple visualization to detailed understanding of plant and microbes interactions, using ‘pheno’ methods and models. 4th Annual P2IRC Symposium . Saskatoon, Saskatchewan, Canada, 22-25 November.

Salon C, Bourion V, Jeudy C, Moreau D, Prudent M, Tixier A, Voisin AS (2019). Challenges and opportunities for innovative research on legume nutrition and stress adaptation: an ecophysiologist’s and phenotyping point of view. Third International Legume Society Conference. Poznan, Pologne. Présentation orale.

Tixier A, Prudent M, Barnard R, Jeudy C, Salon C, Voisin AS (2019). Rhizodeposition as a functional trait in legumes. Study of trade-off for plant productivity and resilience. Third International Legume Society Conference. Poznan, Pologne. Poster.

Tixier A, Orozco J, Amico Roxas A, Guzman P, Godfrey J, Davidson A, Sperling O, Zwieniecki M (2019). Spatial dynamics of carbohydrate content in trees across diurnal and seasonal time scales. 13th Dahlia Greidinger International Symposium. Haifa, Israël. Présentation orale.

Amico Roxas A, Tixier A, Zwieniecki M (2018). Understand the effect of temperature and pH on xylem sugar concentration in pistachio trees. Ecological society of America. New Orleans, LA, USA. Poster.

Tixier A, Dejong, T, Zwieniecki, M (2017). Tree carbohydrate budget. Methods for sustainable management of almonds under changing central valley climatic conditions. California Almond Board, Sacramento, USA. Poster.

Tixier A, Orozco J, Amico Roxas A, Godfrey J, Guzman P, Zwieniecki MA (2017). Non-structural carbohydrates diel variations in trees. Assimilates translocation, storage starch turnover and full canopy secondary redistribution. Ecological society of America. Portland, OR, USA. Présentation orale.

Orozco J, Guzman P, Earles JM, Tixier A, Godfrey J, Zwieniecki MA (2017). Canopy rainfall interception facilitates recovery from severe water stress in Prunus dulcis, a Mediterranean species. Ecological society of America. Portland, OR, USA. Présentation orale.

Godfrey J, Orozco J, Guzman P, Riggio J, Tixier A, Zwieniecki MA (2017). Surviving dormancy: the phenotypic plasticity of xylem parenchyma as starch storage organs across 2750 m of elevation in the Sierra Nevada. Ecological society of America. Portland, OR, USA. Présentation orale.

Tixier A, Dejong T, Zwieniecki, M (2016). Tree carbohydrate budget. Methods for sustainable management of almonds under changing central valley climatic conditions. California Almond Board, Sacramento, USA. Poster.

Tixier A, Sperling O, Orozco J, Lampinen B, Amic Roxas  A, Saa S, Earles JM, Zwieniecki MA. (2016). Spring bud growth depends on sugar delivery by xylem and water recirculation by phloem Munch flow. Botanical Society of America Symposium. Savannah, GA, USA. Présentation orale.

Tixier A, Dejong T, Zwieniecki M (2015) Tree carbohydrate budget. Methods for sustainable management of almonds under changing central valley climatic conditions. California Almond Board, Sacramento, USA. Poster.

Badel E, Guena G, Louf JF, Tixier A, Leblanc-Fournier N, Julien JL, Cochard H, Moulia B, Forterre Y (2015). Long distance signaling of mechanical stress in trees: evidence of hydraulic pulses. International Symposium on Plant signaling & Behavior, Paris, France. Présentation orale.

Tixier A, Herbette S, Jansen S, Capron M, Tordjeman P, Brunel N, Cochard H, Badel E (2014). Mechanical behavior of pits: a key role in the cavitation sensitivity. Xylem international meeting, Besse, France. Présentation orale.

Tixier A, Herbette S, Jansen S, Capron M, Tordjeman P. Brunel N, Cochard H, Badel E (2013). Mechanical behavior of pits: a key role in the cavitation sensitivity. International Symposium on Wood Structure in Plant Biology and Ecology, Naples, Italy. Présentation orale



 rhizodeposition, exudates, legumes, root, rhizosphere