Results 31 to 40 of about 84,526 (262)

Photosystem II Photosynthetic Unit Sizes from Fluorescence Induction in Leaves [PDF]

open access: yesPlant Physiology, 1981
The use of fluorescence induction measurements in leaves infiltrated with 3-(3,4-dichlorophenyl)-1,1-dimethylurea has been evaluated as a routine method for estimation of the concentration of the reaction centers of photosystem II relative to total chlorophyll in a wide variety of plant species. The procedure is based on a simple theory that takes into
S, Malkin   +3 more
openaire   +2 more sources

During photosynthetic induction, biochemical and stomatal limitations differ between Brassica crops [PDF]

open access: yesPlant, Cell & Environment, 2020
AbstractInterventions to increase crop radiation use efficiency rely on understanding of how biochemical and stomatal limitations affect photosynthesis. When leaves transition from shade to high light, slow increases in maximum Rubisco carboxylation rate and stomatal conductance limit net CO2 assimilation for several minutes.
Samuel H. Taylor   +3 more
openaire   +3 more sources

Role of the irr protein in the regulation of iron metabolism in Rhodobacter sphaeroides [PDF]

open access: yes, 2012
In Rhizobia the Irr protein is an important regulator for iron-dependent gene expression. We studied the role of the Irr homolog RSP_3179 in the photosynthetic alpha-proteobacterium Rhodobacter sphaeroides.
Klug, Gabriele   +2 more
core   +13 more sources

Exogenous melatonin strongly affects dynamic photosynthesis and enhances water-water cycle in tobacco

open access: yesFrontiers in Plant Science, 2022
Melatonin (MT), an important phytohormone synthesized naturally, was recently used to improve plant resistance against abiotic and biotic stresses.
Hu Sun   +7 more
doaj   +1 more source

Photosynthetic induction is slower in young leaves than in mature leaves in a tropical invader, Chromolaena odorata

open access: yesPhotosynthetica, 2019
Chromolaena odorata is a noxious invasive perennial herb in tropics and subtropics throughout the world. However, photosynthetic induction of this invader is not well understood.
S.B. ZHANG, Y.J. HAO, Q.L. DENG
doaj   +1 more source

Elevated CO2 Enhances Dynamic Photosynthesis in Rice and Wheat

open access: yesFrontiers in Plant Science, 2021
Crops developed under elevated carbon dioxide (eCO2) exhibit enhanced leaf photosynthesis under steady states. However, little is known about the effect of eCO2 on dynamic photosynthesis and the relative contribution of the short-term (substrate) and ...
Huixing Kang   +9 more
doaj   +1 more source

Measurements of Penetration and Detoxification of PS II Herbicides in Whole Leaves by a Fluorometric Method [PDF]

open access: yes, 1984
The effect of herbicides that inhibit the photosynthetic electron transport at the photosystem II acceptor side has been analyzed in whole plants by using a fluorometric method.
Gräber, Peter   +3 more
core   +1 more source

How to Diagnose Potassium Abundance and Deficiency in Tomato Leaves at the Early Cultivation Stage

open access: yesHorticulturae, 2023
Potassium is one of the indispensable nutrient elements for plant growth, fruit development, and yield. The research and application of potassium nutrition diagnosis technology is the premise of scientific potassium management.
Jinxiu Song   +3 more
doaj   +1 more source

A minimal mathematical model of nonphotochemical quenching of chlorophyll fluorescence [PDF]

open access: yes, 2010
Copyright © 2010 Elsevier Ireland Ltd.
Ebenhöh, Oliver   +4 more
core   +1 more source

Reactive oxygen species generated in chloroplasts contribute to tobacco leaf infection by the necrotrophic fungus Botrytis cinerea [PDF]

open access: yes, 2017
Reactive oxygen species (ROS) play fundamental roles in plant responses to pathogen infection, including modulation of cell death processes and defense-related gene expression.
Bisaro, Fabiana   +5 more
core   +1 more source

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