Results 41 to 50 of about 5,178 (232)

Functional mapping of gravitropism and phototropism for a desert tree, Populus euphratica

Frontiers in Bioscience-Landmark, 2021
Background: Plants have evolved the dual capacity for maximizing light assimilation through stem growth (phototropism) and maximizing water and nutrient absorption through root growth (gravitropism).
Peng Jiang, Nan Ma, Fengshuo Sun, Meixia Ye, Rongling Wu   +4 more
doaj   +1 more source

Diurnal photoperiods and rhythmicity of the phototropic bending response in hypocotyls of sunflower, Helianthus annuus L. seedlings [PDF]

Archives of Biological Sciences, 2021
Research on phototropic (PT) bending in sunflower (Helianthus annuus L. cv. Kondi (Syngenta)) seedling hypocotyls presented herein focused on a comparison of diurnal and free-running photoperiods with the aim of explaining the development of diurnal ...
Vinterhalter Dragan, Vinterhalter Branka
doaj   +1 more source

Phototropin 1 Mediates High-Intensity Blue Light-Induced Chloroplast Accumulation Response in a Root Phototropism 2-Dependent Manner in Arabidopsis phot2 Mutant Plants

Frontiers in Plant Science, 2021
Phototropins, namely, phototropin 1 (phot1) and phototropin 2 (phot2), mediate chloroplast movement to maximize photosynthetic efficiency and prevent photodamage in plants.
Jing Wang, Yu-Fei Liang, Jin-Dong Zhu, Yu-Xiao Wang, Meng-ya Yang, Hongchao Yan, Qian Lv, Kai Cheng, Xiang Zhao, Xiao Zhang   +9 more
semanticscholar   +1 more source

Nuclear phytochrome A signaling promotes phototropism in Arabidopsis [PDF]

, 2012
Phototropin photoreceptors (phot1 and phot2 in Arabidopsis thaliana) enable responses to directional light cues (e.g., positive phototropism in the hypocotyl).
Genoud, Thierry, Kami, C., Hiltbrunner, Andreas, Kami, Chitose, Fankhauser, Christian, Trevisan, Marco, Trevisan, Martine, Hersch, Micha, Bergmann, Sven, Hersch, M., Bergmann, S., Trevisan M, Hersch M, Trevisan, M., Kami C, Genoud T, Genoud, T., Hiltbrunner, A., Hiltbrunner A, Fankhauser C, Bergmann S, Fankhauser, C.   +21 more
core   +2 more sources

phot1 inhibition of ABCB19 primes lateral auxin fluxes in the shoot apex required for phototropism [PDF]

, 2011
It is well accepted that lateral redistribution of the phytohormone auxin underlies the bending of plant organs towards light. In monocots, photoreception occurs at the shoot tip above the region of differential growth.
Titapiwatanakun Boosaree, Lee, O.R., Wendy A. Peer, Lin Jinshan, Murphy, A.S., Kaiserli, Eirini, Ennis, M., Kaiserli, E., Yang Haibing, Lin, Jinshan, Angus S. Murphy, John M Christie, Lin, J., Ritcher, Gregory L., Boosaree Titapiwatanakun, Lee Ok Ran, Lee, Ok Ran, Yang, Haibing, Peer, W.A., Ennis, Margaret, Angus S Murphy, Gregory L. Richter, Adamec Jiri, Thomson, C.E., Richter, G.L., Haibing Yang, Adamec, J., Thomson, Catriona E., Ennis Margaret, Yang, H., Wendy A Peer, Peer, Wendy, Sullivan Stuart, Thomson Catriona E., Titapiwatanakun, B., Catriona E. Thomson, Kaiserli Eirini, Christie, J.M., Christie John M., Peer, Wendy A., Catriona E Thomson, Gregory L Richter, Margaret Ennis, Adamec, Jiri, Sullivan, S., Christie, John M., Peer Wendy A., Richter Gregory L., Eirini Kaiserli, Jiri Adamec, Stuart Sullivan, Richter, Gregory L., Ok Ran Lee, John M. Christie, Murphy Angus S., Jinshan Lin, Sullivan, Stuart, Titapiwatanakun, Boosaree, Murphy, Angus S.   +58 more
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Role of Leaves in Phototropism [PDF]

Plant Physiology, 1966
Experiments with green seedlings of sunflower (Helianthus annuns L.) indicate the existence of a phototropic mechanism which involves the leaves or cotyledons, and which can produce an asymmetry of auxin content without the involvement of lateral auxin transport, the classic explanation of phototropism in etiolated seedlings.
S L, Lam, A C, Leopold
openaire   +2 more sources

THE PHOTOTROPIC MECHANISM IN RANATRA [PDF]

Journal of General Physiology, 1924
Definite proof is obtained that in the phototropic orientation of Ranatra the relative postures of the appendages, resulting in a bilateral difference of effective stroke in swimming, is the mechanism of orientation; the frequency of locomotor movements is the same on the two sides of the body.
W J, Crozier, H, Federighi
openaire   +2 more sources

Low Blue Light Enhances Phototropism by Releasing Cryptochrome1-Mediated Inhibition of PIF4 Expression1[OPEN]

Plant Physiology, 2020
Persistent low blue light in natural canopy shade relieves the inhibitory effect of cryptochrome1 on PHYTOCHROME INTERACTING FACTOR4, enhancing phototropism in de-etiolated Arabidopsis seedlings.
Alessandra Boccaccini, M. Legris, J. Krahmer, Laure Allenbach-Petrolati, Anupama Goyal, C. Galvan-Ampudia, T. Vernoux, Elizabeth Karayekov, J. Casal, C. Fankhauser   +9 more
semanticscholar   +1 more source

Distinct patterns of gene expression during phototropism and heliotropism.

, 2023
(A, B) Normalized transcript levels over time for S15a-like (Ha412HOChr05g0204731) during heliotropism and phototropism, respectively. (C) Genes with different acrophases on the east and west sides of stems; west side acrophases between ZT0 and ZT8.
Christopher J. Brooks (2391088), Hagop S. Atamian (17310428), Stacey L. Harmer (11510437)   +2 more
core   +1 more source

A unified model of shoot tropism in plants: photo-, gravi- and Propio-ception. [PDF]

PLoS Computational Biology, 2015
Land plants rely mainly on gravitropism and phototropism to control their posture and spatial orientation. In natural conditions, these two major tropisms act concurrently to create a photogravitropic equilibrium in the responsive organ.
Renaud Bastien, Stéphane Douady, Bruno Moulia   +2 more
doaj   +1 more source