Results 11 to 20 of about 13,718 (195)

Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching [PDF]

open access: yesPlants, 2022
Lichens often grow in microhabitats where they absorb more light than they can use for fixing carbon, and this excess energy can cause the formation of harmful reactive oxygen species (ROS).
Nqobile Truelove Ndhlovu   +3 more
doaj   +2 more sources

Light Quality-Dependent Regulation of Non-Photochemical Quenching in Tomato Plants [PDF]

open access: yesBiology, 2021
Photosynthetic pigments of plants capture light as a source of energy for photosynthesis. However, the amount of energy absorbed often exceeds its utilization, thus causing damage to the photosynthetic apparatus.
Magdalena Trojak, Ernest Skowron
doaj   +2 more sources

Changes of chlorophyll fluorescence parameters of different alfalfa in cold environment

open access: yesSiliao yanjiu, 2023
The experiment was conducted to study the changes of chlorophyll fluorescence parameters of alfalfa under cold environment, aiming at screening the germplasm materials suitable for planting in Heilongjiang Province.
WANG Xiao-long   +7 more
doaj  

Non-photochemical quenching capacity in Arabidopsis thaliana affects herbivore behaviour. [PDF]

open access: yesPLoS ONE, 2013
Under natural conditions, plants have to cope with numerous stresses, including light-stress and herbivory. This raises intriguing questions regarding possible trade-offs between stress defences and growth.
Hanna Johansson Jänkänpää   +9 more
doaj   +1 more source

Utility of Photochemical Traits as Diagnostics of Thermal Tolerance amongst Great Barrier Reef Corals

open access: yesFrontiers in Marine Science, 2018
Light availability is considered a key factor regulating the thermal sensitivity of reef building corals, where excessive excitation of photosystem II (PSII) further exacerbates pressure on photochemical pathways already compromised by heat stress. Coral
Matthew R. Nitschke   +7 more
doaj   +1 more source

Changes in Chlorophyll a fluorescence and DNA as a plant response to UV-B radiation in Gnaphalium vira-vira [PDF]

open access: yesPolish Polar Research, 2022
Ozone depletion at southern latitudes has recently increased the fluence of ultraviolet-B (UV-B) radiation striking the ground. This phenomenon has sparked much interest in unravelling the effects of this harmful radiation on living systems.
Pedro Cuadra   +4 more
doaj   +1 more source

Diurnal Cycle Relationships between Passive Fluorescence, PRI and NPQ of Vegetation in a Controlled Stress Experiment

open access: yesRemote Sensing, 2017
In order to estimate vegetation photosynthesis from remote sensing observations; some critical parameters need to be quantified. From all absorbed light; the plant needs to release any excess that is not used for photosynthesis; by non-photochemical ...
Luis Alonso   +5 more
doaj   +1 more source

Operation of photosynthetic apparatus of citrus leaves in winter and spring

open access: yes浙江大学学报. 农业与生命科学版, 2006
Optimum temperature for photosynthesis of citrus leaves planted in field was lower in winter than in spring, and it was higher than environmental temperature in winter.
ZENG Guang-hui   +3 more
doaj   +1 more source

Exogenous application of trehalose induced H2O2 production and stomatal closure in Vicia faba

open access: yesBiologia Plantarum, 2013
Trehalose can reduce stomatal aperture by a hydrogen-peroxide-dependent pathway in Vicia faba L. (cv. Daqingpi) resulting in significantly lower values of net photosynthetic rate (PN), stomatal conductance (gs), and transpiration rate (E). At 8 and 24 h,
J. Gao   +5 more
doaj   +1 more source

Photosynthesis sensitivity to NH4+-N change with nitrogen fertilizer type

open access: yesPlant, Soil and Environment, 2014
N-fertilization type affected differently tomato growth. In the field experiment, hydroponic cultures were conducted using NO3-N (5 mmol); mixture of KNO3-N (3 mmol) and (NH4)2SO4-N (2 mmol); NH4+-N (5 mmol) or urea (5 mmol) as nitrogen source.
A. Nasraoui-Hajaji, H. Gouia
doaj   +1 more source

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