Results 41 to 50 of about 11,814 (233)

Fotossíntese e fotoinibição em mogno e acariquara em função da luminosidade e temperatura foliar Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature

Pesquisa Agropecuária Brasileira, 2007
A fotoinibição pode ser intensificada por fatores de estresse como alta temperatura. O objetivo deste trabalho foi determinar os efeitos da luminosidade e temperatura na fotossíntese e na recuperação da fotoinibição sob baixa irradiância em mogno ...
Daniela Pereira Dias, Ricardo Antonio Marenco   +1 more
doaj   +1 more source

Higher Reduced State of Fe/S-Signals, with the Suppressed Oxidation of P700, Causes PSI Inactivation in Arabidopsis thaliana

Antioxidants, 2022
Environmental stress increases the risk of electron accumulation in photosystem I (PSI) of chloroplasts, which can cause oxygen (O2) reduction to superoxide radicals and decreased photosynthetic ability.
Riu Furutani, Shinya Wada, Kentaro Ifuku, Shu Maekawa, Chikahiro Miyake   +4 more
doaj   +1 more source

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

, 2015
Sweet sorghum is an important energy crop. This study aimed to investigate the effects of salt pretreatment on the interaction between photosystem II (PSII) and photosystem I (PSI) upon salt stress. In this study, sweet sorghum was pretreated with 150 mM
Yan, K, Liu, ZN, Yan, K (reprint author), Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res YIC, Shandong Prov Key Lab Coastal Environm Proc,YICCA, Yantai 264003, Peoples R China. kyan@yic.ac.cn, Chen, XB, Zhao, SJ   +4 more
core   +1 more source

Seed traits of species from South Brazilian grasslands with contrasting distribution [PDF]

Acta Botânica Brasílica
South Brazilian grasslands are among the most species-rich grasslands worldwide yet they have been suffering ongoing degradation due to land-use. Little is known about the reproductive ecology of the native species of these grasslands. Thus, our goal was
Alexandre Cristante Martins, Rafaella Migliavacca Marchioretto, Ariane Tonetto Vieira, Eudes Maria Stiehl-Alves, Eliane Kaltchuk dos Santos, Tatiana Teixeira de Souza-Chies   +5 more
doaj   +2 more sources

The zeaxanthin epoxidase is degraded along with the D1 protein during photoinhibition of photosystem II

Plant Direct, 2019
The xanthophyll zeaxanthin is synthesized in chloroplasts upon high light exposure of plants and serves central photoprotective functions. The reconversion of zeaxanthin to violaxanthin is catalyzed by the zeaxanthin epoxidase (ZEP).
Stephanie Bethmann, Michael Melzer, Nadine Schwarz, Peter Jahns   +3 more
doaj   +1 more source

Photoinhibition of photosystem II in tobacco plants overexpressing glutathione reductase and poplars overexpressing superoxide dismutase

, 1999
We studied photoinhibition in two cultivars of tobacco (Nicotiana tabacum L,) expressing the bacterial gor gene In the cytosol and in four lines of poplar (Populus tremula x P, alba) expressing the FeSOD gene of Arabidopsis thaliana in the chloroplast ...
Jouanin, L., Foyer, C. H., Tyystjarvi, E., Arisi, A-C. M., Riikonen, M., Kettunen, R.   +5 more
core   +1 more source

The relationship between cellular protein content and selenium accumulation in freshwater microalgae

Integrated Environmental Assessment and Management, EarlyView.
Abstract Variability in the bioconcentration of selenium (Se) by primary producers at the base of the food web results in uncertainty in predictions of bioaccumulation and ecological risk to higher trophic level organisms. Water chemistry, speciation of Se, and periphyton community composition have all been suggested as factors that contribute to ...
Courtney Bogstie, Melanie Gallant, James R. Elphick, Christopher Kennedy   +3 more
wiley   +1 more source

Overexpression of GmRIQ2-like (Glyma.04G174400) Enhances the Tolerance of Strong Light Stress and Reduces Photoinhibition in Soybean (Glycine max (L.) Merr.)

Agriculture, 2020
Soybean (Glycine max (L.) Merr.) is an important crop that serves as a source of edible oil and protein. However, little is known about its molecular mechanism of adaptation to extreme environmental conditions.
Jing Deng, Dongmei Li, Huayi Yin, Li Ma, Jiukun Zhang, Binbin Zhang   +5 more
doaj   +1 more source

Photosystem II functionality in barley responds dynamically to changes in leaf manganese status

Frontiers in Plant Science, 2016
A catalytic manganese (Mn) cluster is required for the oxidation of water in the oxygen-evolving complex (OEC) of photosystem II (PSII) in plants. Despite this essential role of Mn in generating the electrons driving photosynthesis, limited information ...
Sidsel Birkelund Schmidt, Marta Powikrowska, Ken Suszkiewicz Krogholm, Bianca Naumann-Busch, Jan K. Schjoerring, Søren Husted, Poul Erik Jensen, Pai Rosager Pedas, Pai Rosager Pedas   +8 more
doaj   +1 more source

Comprehensive DIA‐MS Proteomics of Root Basal Nodes Elucidates Mechanisms of Salt Tolerance in Rice

PROTEOMICS, EarlyView.
ABSTRACT Soil salinity severely affects rice growth, yield, and quality, posing a global food security challenge. Rice is particularly vulnerable to high salinity, which restricts growth and tolerance to other stresses. To address this, breeding efforts have been made in the past, leading to the generation of multi‐stress‐tolerant rice lines.
Cheol Woo Min, Choonseok Lee, Ravi Gupta, Gi Hyun Lee, Ji Soo Kim, Na Won Park, Joong Hyoun Chin, Ki‐Hong Jung, Sun Tae Kim   +8 more
wiley   +1 more source