Lateral roots: Random diversity in adversity

Muller Bertrand, Guédon Yann, Passot Sixtine, Lobet Guillaume, Nacry Philippe, Pagès Loïc, Wissuwa Matthias, Draye Xavier. 2019. Lateral roots: Random diversity in adversity. Trends in Plant Science, 24 (9) : 810-825.

https://doi.org/10.1016/j.tplants.2019.05.011

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Quartile : Outlier, Sujet : PLANT SCIENCES

Résumé : Lateral roots are essential for soil foraging and uptake of minerals and water. They feature a large morphological diversity that results from divergent primordia or root growth and development patterns. Besides a structured diversity, resulting from the hierarchical and developmental organization of root systems, there exists a random diversity, occurring between roots of similar age, of the same hierarchical order, and exposed to uniform conditions. The physiological bases and functional consequences of this random diversity are largely ignored. Here we review the evidence for such random diversity throughout the plant kingdom, present innovative approaches based on statistical modeling to account for such diversity, and set the list of its potential benefits in front of a variable and unpredictable soil environment.

Mots-clés Agrovoc : racine, racine adventive, morphologie végétale, transport des substances nutritives

Mots-clés libres : Lateral roots, Stochasticity, Primordia, Growth patterns, Soil conditions, Models

Classification Agris : F62 - Physiologie végétale - Croissance et développement
F50 - Anatomie et morphologie des plantes
F61 - Physiologie végétale - Nutrition

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement européennes : European Commission

Programme de financement européen : FP7

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