Results 11 to 20 of about 9,510 (231)

Phytochromes and Phytochrome Interacting Factors [PDF]

Plant Physiology, 2017
The basic helix-loop-helix domain-containing transcription factors that interact physically with the red and far-red light photoreceptors, phytochromes, are called PHYTOCHROME INTERACTING FACTORS (PIFs). In the last two decades, the phytochrome-PIF signaling module has been shown to be conserved from Physcomitrella patens to higher plants.
Vinh Ngoc Pham, Praveen Kumar Kathare, Enamul Huq   +2 more
openaire   +2 more sources

Phytochrome Radioimmunoassay [PDF]

Plant Physiology, 1979
A phytochrome radioimmunoassay with a detection limit of about 2 nanograms has been developed. The radioimmunoassay does not suffer from the potential drawbacks of the commonly used spectral assay and requires less than 1 microliter of crude extract from dark-grown plants for quantitation of phytochrome.
R E, Hunt, L H, Pratt
openaire   +2 more sources

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

Chemphyschem
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, Köhler L, Fischer T, Gärtner W, Song C, Slavov C, Wachtveitl J.   +6 more
europepmc   +2 more sources

Rapid response

eLife, 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]

Planta 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

The D-ring, Not the A-ring, Rotates in Synechococcus OS-B' Phytochrome [PDF]

, 2014
Phytochrome photoreceptors in plants and microorganisms switch photochromically between two states, controlling numerous important biological processes.
Borucki, Borucki, Cornilescu, Essen, Falk, Falk, Goddard, Hahn, Hahn, Hu, Hughes, Inomata, Inomata, Ishizuka, Lamparter, Li, Mailliet, Rockwell, Rockwell, Rohmer, Rohmer, Rohmer, Röben, Rüdiger, Schmidt, Song, Song, Song, Strauss, Takegoshi, Thurber, Ulijasz, Ulijasz, van Thor, Wagner, Wagner, Yang, Yang, Yang, Yang, Zhao   +40 more
core   +2 more sources

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

Plants, 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, Awais Ahmad, Mahmoud F. Seleiman, ElKamil Tola   +3 more
doaj   +1 more source

New insights into the mechanisms of phytochrome-cryptochrome coaction. [PDF]

, 2018
Contents Summary 547 I. Introduction 547 II. Phytochromes mediate light-induced transcription of BICs to inactivate cryptochromes 548 III. PPKs phosphorylate light-signaling proteins and histones to affect plant development 548 IV.
Ahmad, Bourbousse, Bourbousse, Casas-Mollano, Cashmore, Devlin, Guo, Hoecker, Huang, Hughes, Huq, Ichikawa, Jang, Leivar, Lian, Liu, Liu, Liu, Lu, Ma, Martinez-Garcia, Mas, Mohr, Ni, Ni, Ni, Nusinow, Pedmale, Quail, Rosenfeldt, Saijo, Sang, Sellaro, Shalitin, Sheerin, Su, Su, Tessadori, Tessadori, Wang, Wang, Wang, Wang, Wang, Weidler, Yang, Zheng, Zuo   +47 more
core   +1 more source

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

BMC 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

An Anatomy of Fungal Eye: Fungal Photoreceptors and Signalling Mechanisms

Journal 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