Results 51 to 60 of about 22,348,680 (250)

Exposure to heat waves and drought improves subsequent leaf heat tolerance for five oak species in southern California

American Journal of Botany, EarlyView.
Abstract Premise Given the threats of climate change, we investigated the impact of high temperatures separately and in combination with reduced soil water on leaf heat tolerance for five oaks (Fagaceae) with overlapping ranges in southern California, USA: Quercus agrifolia and Q. chrysolepis (evergreen species), Q. douglasii and Q.
Casey D. Wisely, G. Olivia Plumb, Mira N. Ranganath, Emily Dolida, Ishan Ashford, Graham Luethe, Tim Thibault, Gretchen B. North   +7 more
wiley   +1 more source

Antenna complexes protect Photosystem I from Photoinhibition

BMC Plant Biology, 2009
Background Photosystems are composed of two moieties, a reaction center and a peripheral antenna system. In photosynthetic eukaryotes the latter system is composed of proteins belonging to Lhc family. An increasing set of evidences demonstrated how these
Hienerwadel Rainer, Ballottari Matteo, Alboresi Alessandro, Giacometti Giorgio M, Morosinotto Tomas   +4 more
doaj   +1 more source

Direct energy transfer from photosystem II to photosystem I confers winter sustainability in Scots Pine

Nature Communications, 2020
Evergreen conifers rely on ‘sustained quenching’ to protect their photosynthetic machinery during long, cold winters. Here, Bag et al. show that direct energy transfer (spillover) from photosystem II to photosystem I triggered by loss of grana stacking ...
Pushan Bag, Volha Chukhutsina, Zishan Zhang, Suman Paul, Alexander G. Ivanov, Tatyana Shutova, Roberta Croce, Alfred R. Holzwarth, Stefan Jansson   +8 more
doaj   +1 more source

Excitation energy transfer and trapping in higher plant photosystem II complexes with different antenna sizes [PDF]

, 2011
700 cm(-1)) and a slow relaxation of the radical pair to an irreversible state (similar to 150 ps). Somewhat unexpectedly, we had to reduce the energy-transfer and charge-separation rates in complexes with decreasing size to obtain optimal fits.
van Amerongen, H., Koen Broess, Roberta Croce, Amerongen, H., van, Croce, R., Broess, Koen, Stefano Caffarri, Croce, R.; id_orcid, Croce, Roberta, Herbert van Amerongen, Caffarri, Stefano, Broess, K., Caffarri, S., van Amerongen, Herbert   +13 more
core   +1 more source

Chloramphenicol mediates superoxide production in Photosystem II and enhances its photodamage in isolated membrane particles

Frontiers in Plant Science, 2016
Chloramphenicol is an inhibitor of protein synthesis, which is frequently used to decouple photodamage and protein synthesis dependent repair of Photosystem II during the process of photoinhibition.
Ateeq Ur Rehman, Sandeesha eKodru, Imre eVass   +2 more
doaj   +1 more source

mutants lacking photosystem I

, 1997
By measuring O2 and CO2 exchange in mutants of the green alga Chlamydomonas reinhardtii in which genes encoding the reaction center of photosystem I (psaA or psaB) have been deleted, we found that a photosystem II-dependent electron flow using O2 as the ...
Pierre Bennoun, Cournac, Laurent, Gilles Peltier, Peltier, Gilles, Kevin Redding, Bennoun, Pierre, Redding, Kevin, Laurent Cournac   +7 more
core   +1 more source

Seasonal Fluctuations of Plastochromanol‐8 and α‐Tocopherol Amounts in the Leaves of Cecropia Trees

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Plastochromanol‐8 (PC‐8) is a homologue of γ‐tocotrienol with a longer side chain (eight instead of three isoprene units) and therefore also a representative of the tocochromanol (vitamin E) group. PC‐8 has been determined in various plants and seeds, with Cecropia sp. leaves showing unusually high levels.
Rosalie Ormos, Jörg Rau, Walter Vetter
wiley   +1 more source

Functional Analysis of Photosystem I Complex by Site-directed Mutagenesis

, 2001
Functional analysis of photosystem I complex by site-directed ...
Wu Xu, Xu, Wu
core   +1 more source

Interactions of Photosystem I with Plasmonic nanostructures [PDF]

, 2012
The plasmonic interaction effects of various nanostructures on the fluorescence properties of photosystem I as found by single-molecule spectroscopy are summarized.
Nieder, J., Hussels, M.
core   +1 more source

Real‐time monitoring of root dielectric properties for assessing crop plant damage caused by foliar application of glyphosate

Applications in Plant Sciences, EarlyView.
Abstract Premise There is a knowledge gap regarding how foliar injury and restricted water uptake can be detected by measuring root dielectric response. This pot study nondestructively evaluated the efficiency of real‐time dielectric measurement to monitor the effects of glyphosate spraying.
Imre Cseresnyés, Anna Füzy, Tünde Takács   +2 more
wiley   +1 more source