AI Article Synopsis
- Oscillations in chlorophyll fluorescence yield were detected in pea chloroplasts after they were re-illuminated following a dark period.
- The duration of the dark period, previous light exposure, and temperature all influenced these oscillations.
- This study supports the concept of an "oscillatory center" existing within the chloroplasts.
Article Abstract
Oscillations in chlorophyll fluorescence yield were observed upon re-illumination of intact isolated pea (Pisum sativumL.) chloroplasts that had attained their maximal rate of photosynthesis and had spent a short period in darkness. The oscillations depended on the length of the previous dark period, the length of previous illumination, and the reaction temperature. This finding confirms the presence of an "oscillatory center" in the chloroplasts temselves.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF00201063 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ocean's largest chlorophyll-rich tongue is extending westward (2002-2022).
Nat Commun
January 2025
State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, Fujian, 361102, China.
Upwelling in the Equatorial Pacific nurtures an expansive, westward-stretching chlorophyll-rich tongue (CRT), supporting 18% of the annual global new production. Surrounding the CRT are the oligotrophic subtropical gyres to the north and south, which are suggested to be expanding under global warming. Yet, how this productive CRT has changed, expanding or contracting, remains unknown.
View Article and Find Full Text PDFTetranychus ludeni (Acari: Tetranychidae) infestation triggers a spatiotemporal redox response dependent on soybean genotypes.
Planta
November 2024
Laboratory of Acarology, Tecnovates, University of Vale do Taquari-Univates, Av. Avelino Talini, 171, Lajeado, RS, Brazil.
The redox homeostasis and photosynthetic pigments changes vary with Tetranychus ludeni infestation, with longer-cycle genotypes showing greater tolerance and efficiency in antioxidant defense. Infestations of Tetranychus ludeni Zacher (Tetranychidae) have been frequently observed in soybean plants. In this context, understanding the oscillation of redox homeostasis is crucial for detecting and assessing the stress levels caused in the plants by these organisms.
View Article and Find Full Text PDFA mathematical model to simulate the dynamics of photosynthetic light reactions under harmonically oscillating light.
Plant Physiol Biochem
December 2024
Department of Biophysics, Faculty of Science, Palacký University, Šlechtitelů 241/27, 77900, Olomouc, Czech Republic. Electronic address:
Alternating electric current and alternating electromagnetic fields revolutionized physics and engineering and led to many technologies that shape modern life. Despite these undisputable achievements that have been reached using stimulation by harmonic oscillations over centuries, applications in biology remain rare. Photosynthesis research is uniquely suited to unleash this potential because light can be modulated as a harmonic function, here sinus.
View Article and Find Full Text PDFCoupling and de-coupling of the El Niño Southern Oscillation to the supply of larval fishes to benthic populations in the Hawaiian Islands.
PLoS One
October 2024
Department of Biology, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America.
Several recent high intensity ENSO events have caused strong negative impacts on the adult phases of foundational species in coral reef ecosystems, but comparatively little is known about how climatic variables related to recent ENSOs are impacting the supply of larvae to benthic populations. In marine fishes and invertebrates, reproductive adults and planktonic larvae are generally more sensitive to environmental variability than older, non-reproductive adults. Further, the transport of larvae in ocean currents may also be strongly ENSO dependent.
View Article and Find Full Text PDFEffects of oceanographic conditions on fishery distribution: A case study of chub mackerel (Scomber japonicus) in northeastern Taiwan.
Mar Environ Res
November 2024
Department of Environmental Biology Fisheries Science, National Taiwan Ocean University, Keelung, 202, Taiwan.
Article Synopsis
- Changes in oceanographic conditions can significantly impact species distribution in marine habitats, particularly for chub mackerel in northeastern Taiwan.
- The study found that the chub mackerel catch was primarily influenced by the Western Pacific Oscillation, with sea-surface height having the most notable effect on its distribution.
- Findings indicate optimal conditions for chub mackerel occur at specific temperatures, chlorophyll levels, and salinity, which can inform fisheries management and adaptation strategies in response to climate change.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!