Micro-scale interactions between Arabidopsis root hairs and soil particles influence soil erosion.

Autor: De Baets S; KU Leuven, Oude Markt 13-bus 5005, 3000, Leuven, Belgium. sarah.debaets@kuleuven.be., Denbigh TDG; School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK., Smyth KM; School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK., Eldridge BM; School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK., Weldon L; School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK., Higgins B; School of Mathematics, University of Bristol, Fry Building, Bristol, BS8 1UG, UK., Matyjaszkiewicz A; School of Engineering Mathematics, Queen's Building, University of Bristol, Bristol, BS8 1TR, UK., Meersmans J; TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liège, Gembloux, 5030, Belgium., Larson ER; School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK., Chenchiah IV; School of Mathematics, University of Bristol, Fry Building, Bristol, BS8 1UG, UK., Liverpool TB; School of Mathematics, University of Bristol, Fry Building, Bristol, BS8 1UG, UK., Quine TA; Geography, College of Life and Environmental Sciences, University of Exeter, Amory Building, Rennes Drive, Exeter, EX4 4RJ, UK., Grierson CS; School of Biological Sciences, Life Sciences Building, University of Bristol, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK. lacsg@bristol.ac.uk.
Jazyk: angličtina
Zdroj: Communications biology [Commun Biol] 2020 Apr 03; Vol. 3 (1), pp. 164. Date of Electronic Publication: 2020 Apr 03.
DOI: 10.1038/s42003-020-0886-4
Abstrakt: Soil is essential for sustaining life on land. Plant roots play a crucial role in stabilising soil and minimising erosion, although these mechanisms are still not completely understood. Consequently, identifying and breeding for plant traits to enhance erosion resistance is challenging. Root hair mutants in Arabidopsis thaliana were studied using three different quantitative methods to isolate their effect on root-soil cohesion. We present compelling evidence that micro-scale interactions of root hairs with surrounding soil increase soil cohesion and reduce erosion. Arabidopsis seedlings with root hairs were more difficult to detach from soil, compost and sterile gel media than those with hairless roots, and it was 10-times harder to erode soil from roots with than without hairs. We also developed a model that can consistently predict the impact root hairs make to soil erosion resistance. Our study thus provides new insight into the mechanisms by which roots maintain soil stability.
Databáze: MEDLINE
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