A Commonly Used Photosynthetic Inhibitor Fails to Block Electron Flow to Photosystem I in Intact Systems [PDF]
In plant science, 2,4-dinitrophenylether of iodonitrothymol (DNP-INT) is frequently used as an alternative to 2,5-dibromo-6-isopropyl-3-methyl-1,4-benzoquinone (DBMIB) to examine the capacity of plastoquinol and semiquinone to reduce O2.
Duncan Fitzpatrick +2 more
doaj +4 more sources
Effects of Novel Photosynthetic Inhibitor [CuL2]Br2 Complex on Photosystem II Activity in Spinach [PDF]
The effects of the novel [CuL2]Br2 complex (L = bis{4H-1,3,5-triazino [2,1-b]benzothiazole-2-amine,4-(2-imidazole)}copper(II) bromide complex) on the photosystem II (PSII) activity of PSII membranes isolated from spinach were studied.
Sergey K. Zharmukhamedov +9 more
doaj +2 more sources
The Cupric Ion as an Inhibitor of Photosynthetic Electron Transport in Isolated Chloroplasts [PDF]
Strong inhibition of uncoupled photosynthetic electron transport by Cu(2+) in isolated spinach chloroplasts was observed by measuring changes in O(2) concentration in the reaction medium. Inhibition was dependent not only on the concentration of the inhibitor, but also on the ratio of chlorophyll to inhibitor.
Robert L Heath
exaly +3 more sources
On a new inhibitor of photosynthetic electron-transport in isolated chloroplasts
A halogenated benzoquinone has been found to inhibit the photosynthetic electron transport system in isolated chloroplasts. 2·10-6ᴍ of dibromo-thymoquinone inhibit the Hill- reaction with NADP, methylviologen or anthraquinone to 100%, but do not effect the photoreduction of NADP at the expense of an artificial electron donor.
W Draber
exaly +3 more sources
Inhibitor studies on the photosynthetic carbon reduction cycle in Chlorella pyrenoidosa [PDF]
Abstract Transient changes in the levels of intermediates of the photosynthetic carbon reduction cycle induced by the addition of various chemical compounds to Chlorella pyrenoidosa photosynthesizing under steady-state conditions have been studied. Vitamin K 5 , hexylresorcinol, 3-(3,4-dichlorophenyl)-2,1-dimethylurea and m -chlorocarbonyl cyanide
J A Bassham, Edwin S Gould, J A Bassham
exaly +4 more sources
Physiological and Molecular Responses of the Flag Leaf Under L-Phenylalanine Ammonia-Lyase Inhibition [PDF]
The increasing challenge posed by climate change necessitates a deeper understanding of the plant metabolic pathways that influence productivity under varying environmental conditions.
Katarzyna Hura +4 more
doaj +2 more sources
Differential Responses in Wedelia trilobata and Wedelia chinensis Under Light Stress: Roles of Abscisic Acid and Sodium Tungstate [PDF]
Light availability is a primary determinant of plant growth and a key factor influencing the success of alien plant invasions. Although the phytohormone abscisic acid (ABA) is a known master regulator of abiotic stress responses, its specific role in the
Ping Huang +5 more
doaj +2 more sources
Nitric Oxide Functions as a Key Mediator in Brassinosteroid-Enhanced Alkaline Tolerance in Cucumber [PDF]
This study investigated how exogenous 2,4-epibrassinolide (EBR) and nitric oxide (NO) enhance the tolerance of cucumber (Cucumis sativus L.) seedlings to NaHCO3-induced alkaline stress under hydroponic conditions.
Wenjing Nie +7 more
doaj +2 more sources
Photosynthetic responses of Halimeda scabra (Chlorophyta, Bryopsidales) to interactive effects of temperature, pH, and nutrients and its carbon pathways [PDF]
In this study, we evaluated the interactive effects of temperature, pH, and nutrients on photosynthetic performance in the calcareous tropical macroalga Halimeda scabra.
Daily Zuñiga-Rios +3 more
doaj +2 more sources
Effect of Mycotoxin Cytochalasin A on Photosystem II in Ageratina adenophora
Biological herbicides have received much attention due to their abundant resources, low development cost, unique targets and environmental friendliness. This study reveals some interesting effects of mycotoxin cytochalasin A (CA) on photosystem II (PSII).
Mengyun Jiang +9 more
doaj +1 more source

