Phototropic response induced by wind loading in Maritime pine seedlings (Pinus pinaster Ai̊t.)

Both woody and herbaceous plant species are known to respond to wind loading, with consequences for growth and morphology. Wind has usually been classified as a mechanical stress which is detrimental to plant growth. Few experiments exist whereby plants and, in particular, woody species are exposed...

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Bibliographic Details
Published in:Journal of experimental botany 2005-03, Vol.56 (413), p.851-856
Main Authors: Berthier, Stéphane, Stokes, Alexia
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Azimuth
Bending
Biological and medical sciences
Botanics
Calcium
dynamic load
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
field experimentation
forest trees
Fundamental and applied biological sciences. Psychology
Gravitropism
Life Sciences
mechanical strain
morphogenesis
phototropism
Phototropism - physiology
Pine trees
Pinus - growth & development
Pinus pinaster
Plant growth
plant morphology
plant physiology
Plant Stems - physiology
plant stress
Plants
Quadrants
RESEARCH PAPER
Seasons
seedling growth
Seedlings
Seedlings - growth & development
stems
thigmomorphogenesis
thigmotropism
Time Factors
Tropisms
Vegetal Biology
Wind
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Summary:Both woody and herbaceous plant species are known to respond to wind loading, with consequences for growth and morphology. Wind has usually been classified as a mechanical stress which is detrimental to plant growth. Few experiments exist whereby plants and, in particular, woody species are exposed to wind, as opposed to mechanical perturbation by touching, flexing or shaking. Such experiments have always been short term and often carried out in wind tunnels in a controlled greenhouse environment. This study introduces an experiment to test the responses of Maritime pine (Pinus pinaster Ai̊t.) seedlings to recurrent and short wind loading in the field, over two growing seasons. These experiments provide evidence that periodic short-term exposure to wind can induce phototropic responses in the early stage of pine seedlings' development. An interpretation is proposed in terms of efficiency to light tracking and hypotheses are discussed concerning the underlying physiological process.
ISSN:0022-0957
1460-2431
1460-2431
DOI:10.1093/jxb/eri071