The effect of lunisolar tidal acceleration on stem elongation growth, nutations and leaf movements in peppermint (<i>Mentha × piperita</i> L.)

Zajączkowska, Urszula; Barlow, Peter W.

doi:10.1111/plb.12561

Cited by 14 publications

(15 citation statements)

References 49 publications

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“…It is commonly thought that nutations in individual plants show independent kinetics and trajectories of movements; thus, nutation is not only species dependent, but it is also an individual trait. However, in our previous experiments (Zajączkowska & Barlow ) we found that although peppermint ( Mentha × piperita L.) plant apices, analysed at one time, were characterised by a variable nutation velocity, they all showed similarity of movement dynamics, that correlated with changes in the lunisolar tidal acceleration (Etide). This correlation confirms that plants are affected by shifts in the gravitational field, caused by the Moon's position in relation to that of Earth (Endres & Schad ; Fisahn et al .…”

Section: Introductionmentioning

confidence: 82%

“…The trajectories of stem tip movement, considered to be a specific ‘track’ of an individual plant, can thus provide valuable data on the dynamic states of a plant, for example, by providing important information on plant growth rates. Initial evidence for the importance of a detailed mathematical analysis of plant nutational movements emerged from the results of our previous study, which revealed a close relationship between the velocity of nutational movement and the growth rate of the mint stem (Zajączkowska & Barlow ). This preliminary finding can now be substantiated due to the newly developed mathematical toolbox by the results presented here.…”

Section: Discussionmentioning

confidence: 97%

“…, ,b; Barlow ). In our 2017 study (Zajączkowska & Barlow ), we reported the effect of lunisolar gravitational changes as estimated from the Etide on the growth of mint shoots, nutation and leaf oscillation. We also observed that, in the case of nutation, the shift in the direction of rotation mostly occurred at a time when the dynamics of the changes in Etide were at their highest, and that the nutation was preceded by a period of movement with an irregular character, which was multidirectional and difficult to quantify.…”

Section: Introductionmentioning

confidence: 99%

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Transitions in nutation trajectory geometry in peppermint (Mentha x piperita L.) with respect to lunisolar acceleration

2018

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Nutations of plant organs are significantly affected by the circatidal modulation in the gravitational force exerted by the Moon and Sun (lunisolar tidal acceleration, Etide). In a previous study on nutational rotations of stem apices, we observed abrupt alterations in their direction and irregularities of the recorded trajectories. Such transitions have not yet been analysed in detail. Peppermint plants were continuously recorded with time-lapse photography and aligned with contemporaneous time courses of the Etide estimates. Each nutational stem tip movement path was assigned to one of two groups, depending on its geometry, as: (i) regular elliptical movements and (ii) irregular movements (with a random type of trajectory). Analyses of the correlation between the plant nutation trajectory parameters and Etide, as well as of the trajectory geometry of the individual plants were performed. The trajectory geometry of young mint stem apices was related to the velocity of the apex rotation and significantly affected by the gravitational force estimated from the Etide. A low velocity of nutational movement, associated with the random character of the trajectory, usually occurred simultaneously with local minima or maxima of Etide. As the mint plant ages, the transitions in the stem tip trajectory were limited; no correspondence with Etide dynamics was observed. The results indicate that the plant tip geometry path transitions with respect to the changing gradient of lunisolar tidal acceleration could be interpreted as manifestation of a continuous accommodation of the shoot apical part to the state of minimum energy dissipation.

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Section: Introductionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Transitions in nutation trajectory geometry in peppermint (Mentha x piperita L.) with respect to lunisolar acceleration

2018

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“…But such rhythms may be biological in origin (for examples see, Reinberg et al 2016;Zajączkowska and Barlow 2017). Indeed, some older studies noticed how, for example, the presence of ice nucleating particles also varied with the lunar cycle (Bigg 1963;Bigg and Miles 1964).…”

Section: New Insightsmentioning

confidence: 99%

Forests, atmospheric water and an uncertain future: the new biology of the global water cycle

Sheil

2018

For. Ecosyst.

144

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Theory and evidence indicate that trees and other vegetation influence the atmospheric water-cycle in various ways. These influences are more important, more complex, and more poorly characterised than is widely realised. While there is little doubt that changes in tree cover will impact the water-cycle, the wider consequences remain difficult to predict as the underlying relationships and processes remain poorly characterised. Nonetheless, as forests are vulnerable to human activities, these linked aspects of the water-cycle are also at risk and the potential consequences of large scale forest loss are severe. Here, for non-specialist readers, I review our knowledge of the links between vegetation-cover and climate with a focus on forests and rain (precipitation). I highlight advances, uncertainties and research opportunities. There are significant shortcomings in our understanding of the atmospheric hydrological cycle and of its representation in climate models. A better understanding of the role of vegetation and tree-cover will reduce some of these shortcomings. I outline and illustrate various research themes where these advances may be found. These themes include the biology of evaporation, aerosols and atmospheric motion, as well as the processes that determine monsoons and diurnal precipitation cycles. A novel theory-the 'biotic pump'-suggests that evaporation and condensation can exert a major influence over atmospheric dynamics. This theory explains how high rainfall can be maintained within those continental land-masses that are sufficiently forested. Feedbacks within many of these processes can result in non-linear behaviours and the potential for dramatic changes as a result of forest loss (or gain): for example, switching from a wet to a dry local climate (or visa-versa). Much remains unknown and multiple research disciplines are needed to address this: forest scientists and other biologists have a major role to play. New ideas, methods and data offer opportunities to improve understanding. Expect surprises.

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“…More recently, Peter's interests turned towards the moon and the influence that this satellite may have on biological phenomena on Earth [99]. That conference presentation was followed up by many papers investigating the influence of the moon on such plant phenomena as leaf movements [99][100][101], stem elongation [102], fluctuations in diameters of tree stems [103], root growth [104][105][106], emissions of biophotons by seedlings [107][108][109][110], and chlorophyll fluorescence [111]. Not constrained by gravity, Peter was also developing ideas about extraterrestrial influences and plant bioelectricity [112].…”

Section: Extra-terrestrial Influences On Plant-lifementioning

confidence: 99%

The botanical multiverse of Peter Barlow

Chaffey

Volkmann

Baluška

2019

Communicative & Integrative Biology

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Dr Peter Barlow, who died in 2017, was one of the most respected botanists and biologists of the latter half of the 20th Century. His interests covered a wide range of plant biological topics, e.g. root growth and development, plant cytoskeleton, effects of gravity, plant intelligence, pattern formation, and evolution of eukaryotic cells. Here we consider Peter’s numerous contributions to the: elucidation of plant patterns; understanding of root biology; role of the plant cytoskeleton in growth and development; influence of the Moon on terrestrial vegetation; Cell Body concept; and plant neurobiology. In so doing we attempt not only to provide an overview of Peter’s important work in many areas of plant biology, but also to place that work in the context of recent advances in plant and biological sciences.

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The effect of lunisolar tidal acceleration on stem elongation growth, nutations and leaf movements in peppermint (Mentha × piperita L.)

Cited by 14 publications

References 49 publications

Transitions in nutation trajectory geometry in peppermint (Mentha x piperita L.) with respect to lunisolar acceleration

Transitions in nutation trajectory geometry in peppermint (Mentha x piperita L.) with respect to lunisolar acceleration

Forests, atmospheric water and an uncertain future: the new biology of the global water cycle

The botanical multiverse of Peter Barlow

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