Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 72, Issue 5, Pages 1906-1918Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/eraa541
Keywords
Anemotropic response; Arabidopsis thaliana; biomechanics; mechanical properties; morphology; stem anatomy; thigmomorphogenesis; wind
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Funding
- University of Glasgow's Lord Kelvin/Adam Smith (LKAS) PhD Scholarship
- Engineering and Physical Sciences Research Council United Kingdom [EP/L024888/1]
- EPSRC [EP/L024888/1] Funding Source: UKRI
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The study found that Arabidopsis has a positive anemotropic response to constant unidirectional wind, resulting in significant alterations to the plant's morphology, mechanical properties, and anatomical tissue organization. This suggests that the plant's response to different types of mechanical stimuli may vary.
Plants are known to exhibit a thigmomorphogenetic response to mechanical stimuli by altering their morphology and mechanical properties. Wind is widely perceived as mechanical stress and in many experiments its influence is simulated by applying mechanical perturbations. However, it is known that wind-induced effects on plants can differ and at times occur even in the opposite direction compared with those induced by mechanical perturbations. In the present study, the long-term response of Arabidopsis thaliana to a constant unidirectional wind was investigated. We found that exposure to wind resulted in a positive anemotropic response and in significant alterations to Arabidopsis morphology, mechanical properties, and anatomical tissue organization that were associated with the plant's strategy of acclimation to a windy environment. Overall, the observed response of Arabidopsis to wind differs significantly from previously reported responses of Arabidopsis to mechanical perturbations. The presented results suggest that the response of Arabidopsis is sensitive to the type of mechanical stimulus applied, and that it is not always straightforward to simulate one type of perturbation by another.
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