A phosphorylation switch turns a positive regulator of phototropism into an inhibitor of the process
Nature Communications, 2018 Light conditions modify plant growth and development via photoreceptors such as phototropins. Here the authors show that while phot1 promotes phototropism under low light, it can act to suppress phototropism in high-light environments through ...
Paolo Schumacher +5 more
doaj +1 more source
ALS as Tool to Study Preferred Stem Inclination Directions
Remote Sensing, 2020 Although gravitropism forces trees to grow vertically, stems have shown to prefer specific orientations. Apart from wind deforming the tree shape, lateral light can result in prevailing inclination directions.
Sebastian Lamprecht +2 more
doaj +1 more source
Functional characterization of a constitutively active kinase variant of Arabidopsis phototropin 1 [PDF]
, 2017 Phototropins (phots) are plasma membrane-associated serine/threonine kinases that coordinate a range of processes linked to optimizing photosynthetic efficiency in plants.
Christie, John M. +5 more
core +1 more source
Guard-Cell-Specific Expression of Phototropin2 C-Terminal Fragment Enhances Leaf Transpiration
Plants, 2021 Phototropins (phot1 and phot2) are plant-specific blue light receptors that mediate chloroplast movement, stomatal opening, and phototropism. Phototropin is composed of the N-terminus LOV1 and LOV2 domains and the C-terminus Ser/Thr kinase domain.
Young-Sun Riu +3 more
doaj +1 more source
Chromotropism and phototropism [PDF]
Journal of Comparative Neurology and Psychology, 1907 n ...
openaire +2 more sources
Photoreactions in Phycomyces. Responses to the stimulation of narrow test areas with ultraviolet light [PDF]
, 1961 Equipment has been developed for ultraviolet illumination of sharply bounded test areas of the growing zone of sporangiophores of Phycomyces. The growing zone is opaque for this light and the tropic responses are negative.
Delbrück, M., Varjú, D.
core +2 more sources
Interplay between the Reactions to Light and to Gravity in Phycomyces [PDF]
, 1961 Sporangiophores of Phycomyces do not grow directly towards a horizontal beam of light, but equilibrate at an angle of about 30° above the horizontal. After describing several related observations, this paper suggests that the dioptric properties of an ...
Delbrück, M., Edgar, Lois, Varjú, D.
core +1 more source
Peg Biology: Deciphering the Molecular Regulations Involved During Peanut Peg Development
Frontiers in Plant Science, 2019 Peanut or groundnut is one of the most important legume crops with high protein and oil content. The high nutritional qualities of peanut and its multiple usage have made it an indispensable component of our daily life, in both confectionary and ...
Rakesh Kumar +5 more
doaj +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).
Bergmann, S. +6 more
core +3 more sources
Subfunctionalization of phytochrome B1/B2 leads to differential auxin and photosynthetic responses
Plant Direct, 2020 Gene duplication and polyploidization are genetic mechanisms that instantly add genetic material to an organism's genome. Subsequent modification of the duplicated material leads to the evolution of neofunctionalization (new genetic functions ...
Keisha D. Carlson +4 more
doaj +1 more source