Results 31 to 40 of about 169,159 (312)

Chlorophyll a Sensitiser [PDF]

open access: yesNature, 1900
IT was with a feeling of great satisfaction that I read the concluding lines of Dr. H. Brown's highly interesting presidential address (NATURE, September 14, 1899). I was glad to see that this distinguished chemist, to whom the physiology of plants is so much indebted, adopts certain views on the chlorophyll function, which I have been defending for ...
openaire   +3 more sources

Impact of iron oxide nanoparticles on yellow medick (Medicago falcata L.) plants

open access: yesJournal of Plant Interactions, 2020
A large number of studies have explored the effects of various nanoparticles (NPs) on different economically important plant species. In this study, yellow medick plants were grown for five weeks using hydroponics with the addition of Fe3O4 NPs at 1, 2 ...
Inese Kokina   +3 more
doaj   +1 more source

Assessment of Cyanobacterial Chlorophyll A as an Indicator of Water Quality in Two Wetlands Using Multi-Temporal Sentinel-2 Images

open access: yesEnvironmental Sciences Proceedings, 2023
Cyanobacteria can have a dramatic effect on the quality of water used for human activities, as reported by the World Health Organization. Remote sensing is an appropriate tool for continuous monitoring of the entire water body, given the current state of
Ashwini Mudaliar, Usha Pandya
doaj   +1 more source

Optimization and effects of different culture conditions on growth of Halomicronema hongdechloris – a filamentous cyanobacterium containing chlorophyll f

open access: yesFrontiers in Plant Science, 2014
A chlorophyll f containing cyanobacterium, Halomicronema hongdechloris (H. hongdechloris) was isolated from a stromatolite cyanobacterial community. However, the extremely slower growth rate of H. hongdechloris culture became a critical factor, hindering
Yaqiong eLi   +3 more
doaj   +1 more source

Chlorophyll a oxygenase ( CAO ) is involved in chlorophyll b formation from chlorophyll a [PDF]

open access: yesProceedings of the National Academy of Sciences, 1998
Chlorophyll b is an ubiquitous accessory pigment in land plants, green algae, and prochlorophytes. Its biosynthesis plays a key role in the adaptation to various light environments. We isolated six chlorophyll b -less mutants by insertional mutagenesis by using the nitrate reductase or ...
A, Tanaka   +5 more
openaire   +2 more sources

Photosynthetic responses of heat-stressed apple leaves to foliar application of salicylic and ascorbic acid

open access: yesPhotosynthetica
High temperatures have significant impacts on fruit tree production. Foliar spraying application of promoting agents can be a sustainable approach to managing high-temperature stress in orchards.
I. MIHALJEVIĆ   +4 more
doaj   +1 more source

Variability of nutrients and chlorophyll a in Ancão Inlet during a spring tidal cycle in April 2009

open access: yesCiencias Marinas, 2011
São Luis or Ancão Inlet is the most western of the six inlets of the Ria Formosa lagoon, in southern Portugal. This inlet contributes relatively little to the water volume exchange over a tidal cycle (~10%).
P Alcântara, A Cravo, J Jacob
doaj   +1 more source

The statistical power to detect cross‐scale interactions at macroscales

open access: yesEcosphere, 2016
Macroscale studies of ecological phenomena are increasingly common because stressors such as climate and land‐use change operate at large spatial and temporal scales. Cross‐scale interactions (CSIs), where ecological processes operating at one spatial or
Tyler Wagner   +4 more
doaj   +1 more source

Validation of Stratification-Driven Phytoplankton Biomass and Nutrient Concentrations in the Northeast Atlantic Ocean as Simulated by EC-Earth

open access: yesGeosciences, 2019
We validated simulations of the Earth system model (ESM) EC-Earth-NEMO of present-day temperature, salinity, nutrient, and chlorophyll a profiles with in situ observations in the Northeast Atlantic Ocean (29−63º N).
Nomikos Skyllas   +6 more
doaj   +1 more source

Elektrochromie von Chlorophyll-a und Chlorophyll-b in monomolekularen Filmen / Electrochromie Effects of a Chlorophyll a and a Chlorophyll b Monolayer

open access: yesZeitschrift für Naturforschung B, 1969
A electric field induced linear and quadratic change in the optical absorption of a chlorophyll a and chlorophyll b monolayer is reported. The chlorophylls are incorporated in a fatty acid monolayer condenser which allows the application of external field strength up to 4 · 106 V/cm. The spectrum of the quadratic electrochromic effect shows evidence of
D. Kleuser, H. Bücher
openaire   +1 more source

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