Results 11 to 20 of about 12,701 (145)

Beyond red/far-red sensing: phytochrome perception of the marine light field by microalgae. [PDF]

New Phytol
Summary Phytochromes (PHYs) are a major group of photoreceptors, described as red and far‐red light sensors in land plants. Recent genomic and metagenomic explorations have revealed the presence of PHYs also in various eukaryotic microalgae originating from distinct endosymbiotic events.
Duchêne C, Jaubert M, Falciatore A.
europepmc   +2 more sources

Cytokinin downregulates Photosystem II photochemistry during prolonged darkness in a phytochrome B-dependent manner. [PDF]

New Phytol
Cytokinin–phyB signaling modulates PSII photochemistry during prolonged darkness. Summary Cytokinins (CKs) delay dark‐induced senescence, but how they tune photosynthetic function in darkness remains unclear. We investigated the effects of classical aromatic CK benzylaminopurine and CK‐derived compound 1‐(2‐methoxyethyl)‐3‐(1,2,3‐thiadiazol‐5‐yl)urea ...
Kábrtová V, Kučerová Z, Chamrád I, Lenobel R, Roudnický P, Skalák J, Hudeček M, Zavadil Kokáš F, Rác M, Vánská T, Nisler J, Hejátko J, Strnad M, Špundová M, Plíhal O.   +14 more
europepmc   +2 more sources

Shade Avoidance Restricts Soybean Breeding Progress and Increases Herbivore Susceptibility. [PDF]

Evol Appl
ABSTRACT High planting densities expose field crops to competition for light, which typically induces shade avoidance responses such as stem elongation. While adaptive in natural environments, these responses can lower yield and increase susceptibility to stress in agricultural systems.
Vonmetz L, Kopp EB, Jäggi S, Niklaus PA, Wuest SE.   +4 more
europepmc   +2 more sources

Influence of growth regulators and respiration inhibitors on dark transformation of phytochrome in coleoptiles of oat seedlings

Acta Societatis Botanicorum Poloniae, 2014
Irradiation with red light leads to the formation of an unstable, undergoing gradual destruction, physiologically active PFR form of phytochrome in the coleoptiles of oat seedlings.
Jan Kopcewicz, Mariusz Cymerski, Kazimierz Madela   +2 more
doaj   +1 more source

Comparative analysis of two phytochrome mutants of tomato (Micro-Tom cv.) reveals specific physiological, biochemical, and molecular responses under chilling stress

Journal of Genetic Engineering and Biotechnology, 2020
Background Phytochromes are plant photoreceptors that have long been associated with photomorphogenesis in plants; however, more recently, their crucial role in the regulation of variety of abiotic stresses has been explored.
Raheel Shahzad, Faraz Ahmed, Zheng Wang, Putri Widyanti Harlina, Elsayed Nishawy, Mohamed Ayaad, Abdul Manan, Mohamed Maher, Mohamed Ewas   +8 more
doaj   +1 more source

Cucumber leaf necrosis caused by radiation with abrupt increase of far-red component

Biologia Plantarum, 2023
Plants exhibit morphological plasticity in response to changes in the proportion of far-red radiation (FR). However, little is known about the response to a sudden increase of FR component. Cucumber seedlings were acclimatized to radiation without FR (FR-
T. SHIBUYA, C. KATAOKA, K. NISHIO, R. ENDO, Y. KITAYA, Y. SHINTO, K.I. MISHIBA, Y. IWATA   +7 more
doaj   +1 more source

Participation of labile and stabile phytochrome in the control of chlorophyll accumulation during the deetiolation of oat seedlings

Acta Societatis Botanicorum Poloniae, 2014
The effect of the phytochrome system on the accumulation rate of chlorophyll-a and b in 96-hour-old oat seedlings during the first 3 hours of white light action was investigated.
Mariusz Cymerski, Jan Kopcewicz
doaj   +1 more source

Far-red Fraction: An Improved Metric for Characterizing Phytochrome Effects on Morphology

Journal of the American Society for Horticultural Science, 2020
Phytochrome, a well-studied photoreceptor in plants, primarily absorbs in the red (R) and far-red (FR) regions and is responsible for the perception of shade and subsequent morphological responses.
Paul Kusuma, Bruce Bugbee
doaj   +1 more source

Anatomia foliar de microtomateiros fitocromo-mutantes e ultra-estrutura de cloroplastos Leaf anatomy of micro-tomato phytochrome-mutants and chloroplast ultra-structure

Ciência e Agrotecnologia, 2011
Plantas fitocromo-mutantes têm sido utilizadas com o intuito de caracterizar isoladamente, dentre os demais fotorreceptores, a ação dos fitocromos sobre eventos ligados à fotomorfogênese.
Hyrandir Cabral de Melo, Evaristo Mauro de Castro, Eduardo Alves, Fabiano José Perina   +3 more
doaj   +1 more source

Fusarium Photoreceptors

Journal of Fungi, 2023
Light is an important modulating signal in fungi. Fusarium species stand out as research models for their phytopathogenic activity and their complex secondary metabolism.
Javier Pardo-Medina, M. Carmen Limón, Javier Avalos   +2 more
doaj   +1 more source