Results 11 to 20 of about 4,018 (189)

Single GAF Domain Phytochrome Exhibits a pH-Dependent Shunt on the Millisecond Timescale. [PDF]

open access: yesChemphyschem
During their light‐induced photocycle, phytochromes can engage in a thermal reversion back to the initially excited state, denoted as a shunt. This study investigates a pH‐dependent shunt transition in the Pfr state of the All2699g1 phytochrome from Nostoc punctiforme using UV/Vis laser flash photolysis and kinetic modeling. The findings suggest a keto‐
Trunk F   +6 more
europepmc   +2 more sources

Rapid response

open access: yeseLife, 2020
Extremely short X-ray pulses from a free-electron laser are helping to clarify how phytochromes respond to light, but puzzles remain.
Jon Hughes
doaj   +1 more source

Physiological and Genetic Bases of the Circadian Clock in Plants and Their Relationship with Herbicides Efficacy [PDF]

open access: yesPlanta Daninha, 2016
In order to adapt to daily environmental changes, especially in relation to light availability, many organisms, such as plants, developed a vital mechanism that controls time-dependent biological events: the circadian clock.
G. DALAZEN, A. MEROTTO JR.
doaj   +1 more source

Photobiotechnology for abiotic stress resilient crops: Recent advances and prospects

open access: yesHeliyon, 2023
Massive crop failures worldwide are caused by abiotic stress. In plants, adverse environmental conditions cause extensive damage to the overall physiology and agronomic yield at various levels.
Mayank Anand Gururani
doaj   +1 more source

A computational approach to discovering the functions of bacterial phytochromes by analysis of homolog distributions

open access: yesBMC Bioinformatics, 2006
Background Phytochromes are photoreceptors, discovered in plants, that control a wide variety of developmental processes. They have also been found in bacteria and fungi, but for many species their biological role remains obscure.
Lamparter Tilman
doaj   +1 more source

Seed Priming with Nanoparticles and 24-Epibrassinolide Improved Seed Germination and Enzymatic Performance of Zea mays L. in Salt-Stressed Soil

open access: yesPlants, 2023
Saline stress is one of the most critical abiotic stress factors that can lessen crops’ productivity. However, emerging nanotechnology, nano-fertilizers, and developing knowledge of phytochromes can potentially mitigate the negative effects of saline ...
Bushra Ahmed Alhammad   +3 more
doaj   +1 more source

An Anatomy of Fungal Eye: Fungal Photoreceptors and Signalling Mechanisms

open access: yesJournal of Fungi, 2023
Organisms have developed different features to capture or sense sunlight. Vertebrates have evolved specialized organs (eyes) which contain a variety of photosensor cells that help them to see the light to aid orientation.
Özlem Sarikaya Bayram, Özgür Bayram
doaj   +1 more source

Monoseeding Increases Peanut (Arachis hypogaea L.) Yield by Regulating Shade-Avoidance Responses and Population Density

open access: yesPlants, 2021
We aimed to elucidate the possible yield-increasing mechanisms through regulation of shade-avoidance responses at both physiological and molecular levels under monoseeding.
Tingting Chen   +7 more
doaj   +1 more source

Generation of High-Value Genomic Resource in Rice: A “Subgenomic Library” of Low-Light Tolerant Rice Cultivar Swarnaprabha

open access: yesBiology, 2023
Rice is the major staple food crop for more than 50% of the world’s total population, and its production is of immense importance for global food security. As a photophilic plant, its yield is governed by the quality and duration of light.
Sovanlal Sahu   +12 more
doaj   +1 more source

Phytochrome Control of Another Phytochrome-mediated Process [PDF]

open access: yesPlant Physiology, 1972
The phytochrome-mediated attachment of root tips of mung bean (Phaseolus aureus) and barley (Hordeum vulgare) to glass is affected by the prior exposure of hydrated seeds or seedlings to red or far red radiation. Prior irradiation of seeds or seedlings of mung bean with red light promotes attachment, while far red light promotes detachment of root tips.
openaire   +2 more sources

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