Results 61 to 70 of about 875 (171)

Coordinated Activity of Photosystem I and Photosystem II in Selaginella martensii (Lycopodiophyta) Across Light Gradients

Physiologia Plantarum, Volume 178, Issue 2, March/April 2026.
ABSTRACT Selaginella martensii is a living member of lycophytes, an early divergent group of vascular plants. This shade‐adapted species can acclimate to various light regimes, from deep shade to high light, with a gain in carboxylation capacity accompanied by modulations in thylakoid composition, including increased relative amount of photosystem I ...
Lorenzo Ferroni, Marek Živčak, Andrea Colpo, Stefania Simonetto, Costanza Baldisserotto, Simonetta Pancaldi, Marian Brestič   +6 more
wiley   +1 more source

Chloroplast ATP Synthase Modulation of the Thylakoid Proton Motive Force: Implications for Photosystem I and Photosystem II Photoprotection

Frontiers in Plant Science, 2017
In wild type plants, decreasing CO2 lowers the activity of the chloroplast ATP synthase, slowing proton efflux from the thylakoid lumen resulting in buildup of thylakoid proton motive force (pmf).
Atsuko Kanazawa, Atsuko Kanazawa, Elisabeth Ostendorf, Kaori Kohzuma, Donghee Hoh, Donghee Hoh, Deserah D. Strand, Mio Sato-Cruz, Linda Savage, Jeffrey A. Cruz, Jeffrey A. Cruz, Nicholas Fisher, John E. Froehlich, John E. Froehlich, David M. Kramer, David M. Kramer   +15 more
doaj   +1 more source

Bundle sheath cell‐specific expression of chloroplast genes encoding subunits of the NADH dehydrogenase‐like complex in maize

The Plant Journal, Volume 124, Issue 5, December 2025.
SUMMARY C4 photosynthesis alleviates the limitation caused by the oxygenase activity of Rubisco by partitioning photosynthetic functions between two distinct cell types: bundle sheath cells (BSCs) and mesophyll cells (MCs). These cell types perform different steps of photosynthesis using specialized machinery, accompanied by differential expression of ...
Haruna Yano, Yuya Fukuta, Yoshiki Nihsimura, Toshiharu Shikanai   +3 more
wiley   +1 more source

Glucose Uncouples Nitrogen Sensing From Chlorosis via a Photosynthetic Checkpoint in Synechocystis sp. PCC 6803

Physiologia Plantarum, Volume 177, Issue 6, November/December 2025.
ABSTRACT Cyanobacteria adapt to nitrogen starvation by undergoing chlorosis, a regulated bleaching process that involves the degradation of phycobilisomes, the light‐harvesting antennae complexes, and accumulation of glycogen. While this response is well characterized under photoautotrophic conditions, its modulation by external organic carbon sources ...
Pablo Ortega‐Martínez, Joaquín Giner‐Lamia, Laura T. Wey, M. Isabel Muro‐Pastor, Francisco J. Florencio, Sandra Díaz‐Troya   +5 more
wiley   +1 more source

A Single Amino Acid Alteration in PGR5 Confers Resistance to Antimycin A in Cyclic Electron Transport around PSI [PDF]

Plant and Cell Physiology, 2013
In Arabidopsis thaliana, the main route of cyclic electron transport around PSI is sensitive to antimycin A, but the site of inhibition has not been clarified. We discovered that ferredoxin-dependent plastoquinone reduction in ruptured chloroplasts was less sensitive to antimycin A in Arabidopsis that overaccumulated PGR5 (PROTON GRADIENT REGULATION 5)
K. Sugimoto, Y. Okegawa, A. Tohri, T. A. Long, S. F. Covert, T. Hisabori, T. Shikanai   +6 more
openaire   +2 more sources

Resilient and Sensitive Key Points of the Photosynthetic Machinery of Coffea spp. to the Single and Superimposed Exposure to Severe Drought and Heat Stresses

Frontiers in Plant Science, 2020
This study unveils the single and combined drought and heat impacts on the photosynthetic performance of Coffea arabica cv. Icatu and C. canephora cv. Conilon Clone 153 (CL153).
Danielly Dubberstein, Danielly Dubberstein, Fernando C. Lidon, Ana P. Rodrigues, José N. Semedo, José N. Semedo, Isabel Marques, Weverton P. Rodrigues, Weverton P. Rodrigues, Duarte Gouveia, Jean Armengaud, Magda C. Semedo, Magda C. Semedo, Sónia Martins, Sónia Martins, Maria C. Simões-Costa, I. Moura, Isabel P. Pais, Isabel P. Pais, Paula Scotti-Campos, Paula Scotti-Campos, Fábio L. Partelli, Eliemar Campostrini, Ana I. Ribeiro-Barros, Ana I. Ribeiro-Barros, Fábio M. DaMatta, José C. Ramalho, José C. Ramalho   +27 more
doaj   +1 more source

Genomic Variation Underpins Genetic Divergence and Differing Salt Resilience in Sesbania bispinosa

Advanced Science, Volume 12, Issue 32, August 28, 2025.
Sesbania, a leguminous halophyte, thrives in saline soils. Comparative genomics reveals key genomic variations—particularly chromosomal inversions—are identified as contributors to population differentiation and salt resilience. These findings advance the understanding of genomic variation driving evolution and phenotypic differentiation and offer ...
Gai Huang, Xiaofei Wang, Chengli Liu, Kaixuan He, Xiu‐Li Hou, Haofei Luo, Shuaibin Zhang, Changqing You, Yajun Jia, Fuqiang Wang, Xianwei Song, Guodao Liu, Xian Deng, Xiaofeng Cao   +13 more
wiley   +1 more source

Molecular Photosynthesis Research Facilitating Technology Development Towards Enhanced Indoor Farming

Physiologia Plantarum, Volume 177, Issue 4, July/August 2025.
ABSTRACT Plants harness light energy through photosynthesis, a biological process that converts electromagnetic radiation into chemical form and drives CO2 fixation to produce biomass. Photosynthetic machinery, the engine of the process, is a complex network of protein assemblies that function in plant chloroplasts and control the energy conversion ...
Pauli Kallio, Grzegorz Konert, Samuli Pyytövaara, Mikko Tikkanen   +3 more
wiley   +1 more source

Flavodiiron Protein Activity Outcompetes Cyclic Electron Transport When Expressed in Angiosperm Nicotiana tabacum

Physiologia Plantarum, Volume 177, Issue 4, July/August 2025.
ABSTRACT In conditions of excess illumination, alternative electron transport pathways in the thylakoid membranes protect the photosynthetic apparatus against damage from eventual over‐reduction. Two main pathways downstream of photosystem I (PSI) enable alternative electron flow, mitigating PSI acceptor‐side limitation, while contributing to ATP ...
Nicholas Rizzetto, Eleonora Traverso, Andrea Sabia, Filippo Fiorin, Carlotta Francese, Livio Trainotti, Tomas Morosinotto, Alessandro Alboresi   +7 more
wiley   +1 more source

PGR5 and NDH Pathways in Photosynthetic Cyclic Electron Transfer Respond Differently to Sublethal Treatment with Photosystem-Interfering Herbicides

, 2016
Effects of sublethal levels of the photosystem-interfering herbicides atrazine (Atr) and methyl viologen (MV) on photosynthetic electron transport were investigated in Arabidopsis thaliana mutants with defects in cyclic electron transfer (CET) activity ...
Tsuyoshi Endo (1812589), Haifeng Qian (179918), Takuma Tsuji (1812586), Fumihiko Sato (667020)   +3 more
core   +1 more source