Results 61 to 70 of about 333,362 (220)
Relationship between photosynthetic pigments and corn production under nitrogen sources
Pesquisa Agropecuária Tropical, 2020 Nitrogen (N) is a dynamic element in the soil, so new nitrogen fertilization alternatives are required as a way of maximizing its efficiency. Besides, vegetation sensors are a way to assess and manage the nutritional demands of plants.
Ezequiel Zibetti Fornari +5 more
doaj +1 more source
The effect of Copper Oxide Nanoparticle on Pigments Systems of Algae Scenedesmus dimorphus [PDF]
Biological Journal of Microorganism, 2019 Introduction: Due to very small dimensions, nanomaterials can have different properties compared to their bulk form. In nanometer dimension of material, atomic behavior dominates. Such behavior changes may adversely affect biological organism, especially
Mansooreh Kazemi, Fatemeh Shariati
doaj +1 more source
Frontiers in Marine Science, 2021 The unprecedented nationwide lockdown due to the ‘coronavirus disease 2019’ (COVID-19) affected humans and the environment in different ways. It provided an opportunity to examine the effect of reduced transportation and other anthropogenic activities on
Vivek Seelanki, Vimlesh Pant
doaj +1 more source
Using Sentinel-2 Data for Retrieving LAI and Leaf and Canopy Chlorophyll Content of a Potato Crop
Remote Sensing, 2017 Leaf area index (LAI) and chlorophyll content, at leaf and canopy level, are important variables for agricultural applications because of their crucial role in photosynthesis and in plant functioning.
J. Clevers +2 more
semanticscholar +1 more source
Evolution of Photosynthesis and Biospheric Oxygenation Contingent Upon Nitrogen Fixation? [PDF]
Int.J.Astrobiol. 4 (2005) 251-257, 2006 How photosynthesis by Precambrian cyanobacteria oxygenated Earth's biosphere remains incompletely understood. Here it is argued that the oxic transition, which took place between approximately 2.3 and 0.5 Gyr ago, required a great proliferation of cyanobacteria, and this in turn depended on their ability to fix nitrogen via the nitrogenase enzyme ...
arxiv +1 more source
The biochemistry and molecular biology of chlorophyll breakdown
Journal of Experimental Botany, 2018 Chlorophyll breakdown is one of the most obvious signs of leaf senescence and fruit ripening. The resulting yellowing of leaves can be observed every autumn, and the color change of fruits indicates their ripening state.
B. Kuai, Junyi Chen, S. Hörtensteiner
semanticscholar +1 more source
Computational Studies on Structural and Excited State Properties of Modified Chlorophyll f with Various Axial Ligands [PDF]
Journal of Physical Chemistry A, 115 (44), 2011, 12298-12306, 2013 Time Dependent Density Functional Theory (TDDFT) calculations have been used to understand the excited state properties of "modified-chlorophyll" f ('Chlide' f), Chlide a, Chlide b and axial ligated (with Imidazole, H2O, CH3OH, CH3COOH, C6H5OH) Chlide f molecules.
arxiv +1 more source
Extraction of chlorophyll from pandan leaves using ethanol and mass transfer study [PDF]
Journal of the Serbian Chemical Society, 2017 Green pigments are used in many industrial branches including food, drinks, soap and cosmetics. Chlorophyll can substitute synthetic dyes which may affect health.
Putra Meilana Dharma +3 more
doaj +1 more source
Journal of Pineal Research, 2019 Melatonin and abscisic acid (ABA) play contrasting roles in regulating leaf senescence in plants. The molecular mechanism underlying the interaction between melatonin and ABA involved in leaf senescence, however, remains poorly defined.
Xiao-li Tan +9 more
semanticscholar +1 more source
Molecules, 2018 Black pepper (Piper nigrum L.) is the most widely used spice in the world. Blackening is considered to be beneficial and important in the processing of black pepper because it contributes to its color and flavor.
Fenglin Gu +3 more
doaj +1 more source