Results 101 to 110 of about 8,284 (218)

Comparative effects of auxin and abscisic acid on growth, hydrogen ion efflux and gravitropism in primary roots of maize [PDF]

open access: yes
In order to test the idea that auxin action on root growth may be mediated by H(+) movement, the correlation of auxin action on growth and H(+) movement in roots was examined along with changes in H(+) efflux patterns associated with the asymmetric ...
Evans, M. L., Mulkey, T. J.
core   +1 more source

Plants and Graviperception [PDF]

open access: yesفناوری در مهندسی هوافضا, 2019
Plants have different mechanisms for understanding and responding to environmental stimuli cues. Gravity is one of the most important directional environmental cues to control growth direction, that plants can permanently adapt to it. Gravitropism can be
Fateme Mousavi
doaj  

Plant Root Architectural Traits Mediate a Trade‐Off Between Suppression and Tolerance of Competitors

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
We use a modelling approach to simulate the evolution of root architecture under increasing levels of competition. An increase in the number of neighbours results in the evolution of roots that grow deeper and are less dense, causing plants to have lower maximum fitness but increased competition tolerance.
Hugo Salinas   +3 more
wiley   +1 more source

The role of calcium and calmodulin in the response of roots to gravity [PDF]

open access: yes
There is general agreement that, in roots, the primary detection of the gravitropic signal occurs in the columella cells of the cap and that this results in the generation of a signal that moves into the elongation zone causing the asymmetric growth that
Evans, Michael L.
core   +1 more source

PID/WAG-mediated phosphorylation of the Arabidopsis PIN3 auxin transporter mediates polarity switches during gravitropism [PDF]

open access: yes, 2018
Intercellular distribution of the plant hormone auxin largely depends on the polar subcellular distribution of the plasma membrane PIN-FORMED (PIN) auxin transporters. PIN polarity switches in response to different developmental and environmental signals
Abas, Melinda   +6 more
core   +4 more sources

Anatomical changes of xylem cells in stem of Pinus radiata seedlings exposed to inclination and ethylene

open access: yesBiologia Plantarum, 2013
In conifers, relationship between ethylene and the response to inclination are not well understood. The aim of this work was to study the consequence for the application of 2-chloroethyl phosphonic acid (ethephon), compound able to release ethylene, in ...
P. Ramos, R. Herrera
doaj   +1 more source

A method for the quantification of phototropic and gravitropic sensitivities of plants combining an original experimental device with model-assisted phenotyping: Exploratory test of the method on three hardwood tree species.

open access: yesPLoS ONE, 2019
Perception of inclination in the gravity field and perception of light direction are two important environmental signals implicated in the control of plant shape and habit. However, their quantitative study in light-grown plants remains a challenge.
Catherine Coutand   +3 more
doaj   +1 more source

Live tracking of moving samples in confocal microscopy for vertically grown roots

open access: yeseLife, 2017
Roots navigate through soil integrating environmental signals to orient their growth. The Arabidopsis root is a widely used model for developmental, physiological and cell biological studies.
Daniel von Wangenheim   +5 more
doaj   +1 more source

The Fiber Walk: A Model of Tip-Driven Growth with Lateral Expansion [PDF]

open access: yes, 2013
Tip-driven growth processes underlie the development of many plants. To date, tip-driven growth processes have been modelled as an elongating path or series of segments without taking into account lateral expansion during elongation.
Bucksch, Alexander   +2 more
core   +4 more sources

Regulation of tiller angle by gravity-sensing genes in rice

open access: yesCrop Journal
Endodermal cells and starch-accumulating amyloplasts are well-known gravity sensors initiating shoot gravitropism in Arabidopsis thaliana. The transcription factors SHR and SGR1 regulate endodermal cell formation, while PGM has been demonstrated to ...
Tao Yin   +5 more
doaj   +1 more source

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