Submergence limits plants' access to oxygen and light, causing massive changes in metabolism; after submergence, plants experience additional stresses, including reoxygenation, dehydration, photoinhibition and accelerated senescence. Plant responses to waterlogging and partial or complete submergence have been well studied, but our understanding of plant responses during post-submergence recovery remains limited. During post-submergence recovery, whether a plant can repair the damage caused by submergence and reoxygenation and re-activate key processes to continue to grow, determines whether the plant survives. Here, we summarize the challenges plants face when recovering from submergence, primarily focusing on studies of Arabidopsis thaliana and rice (Oryza sativa). We also highlight recent progress in elucidating the interplay among various regulatory pathways, compare post-hypoxia reoxygenation between plants and animals and provide new perspectives for future studies.
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http://dx.doi.org/10.1111/pbi.13944 | DOI Listing |
Comp Biochem Physiol A Mol Integr Physiol
January 2025
Developmental Integrative Biology, Department of Biological Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, United States of America.
Bird nests of coastal or inland breeding birds can temporarily flood during high tides or storms. However, respiratory physiological disruption of such water submersion and implications for post-submergence survival are poorly understood. We hypothesized that respiratory physiological disturbances caused by submersion would be rapidly corrected following return to normal gas exchange across the eggshell, thus explaining survival of nest inundation in the field.
View Article and Find Full Text PDFOpen Vet J
November 2024
Department of Clinical Sciences Veterinary Medicine, Veterinary faculty, University of Sarajevo, Sarajevo, Bosnia and Herzegovina.
Background: There is no specified diagnostic procedure that can help in determining the cause of death and the diagnosis of drowning because the pathohistological signs are almost identical and non-specified.
Aim: Our study aims to recognize and prove diatom appearance in organs from a forensic aspect in Bosnia and Herzegovina, and to examine which is the more specific method in the diagnosis of drowning, the diatom test or the pathohistological finding.
Methods: Rats of the recommended body weight were divided into four groups: G1 ( = 8; mechanism of death-asphyxia; cause of death-suffocation, submerged 1 hour after death); G2 ( = 8: mechanism of death-asphyxia; cause of death-suffocation, immersed 72 hours after death); G3 ( = 8: mechanism of death-asphyxia; cause of death-drowning, autopsy immediately after death), and G4 ( = 8: mechanism of death-asphyxia; cause of death-drowning, post mortem 24 hours after death).
ISME J
December 2024
Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA, United States.
Aqueous-soluble hydrocarbons dissolve into the ocean's interior and structure deep-sea microbial populations influenced by natural oil seeps and spills. n-Pentane is a seawater-soluble, volatile compound abundant in petroleum products and reservoirs and will partially partition to the deep-water column following release from the seafloor. In this study, we explore the ecology and niche partitioning of two free-living Cycloclasticus strains recovered from seawater incubations with n-pentane and distinguish them as an open ocean variant and a seep-proximal variant, each with distinct capabilities for hydrocarbon catabolism.
View Article and Find Full Text PDFPlant Cell Environ
December 2024
Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia.
Mangroves are highly salt-tolerant species, which live in saline intertidal environments, but rely on alternative, less saline water to maintain hydraulic integrity and plant productivity. Foliar water uptake (FWU) is thought to assist in hydration of mangroves, particularly during periods of acute water deficit. We investigated the dynamics of FWU in Avicennia marina and Aegiceras corniculatum by submerging and spraying excised branches and measuring leaf water potential (Ψ) at different time intervals.
View Article and Find Full Text PDFJ Forensic Sci
December 2024
Department of Forensic Science, College of Criminal Justice, Sam Houston State University, Huntsville, Texas, USA.
Aggressive chemicals intended for cleaning pools or unclogging drains contain high concentrations of dangerous compounds, leading to their nefarious use in dissolving human remains in some criminal cases. The use of these readily accessible household cleaners to destroy human remains and hide evidence of a crime presents a considerable challenge for human identification. However, research on the success of recovering DNA from such remains is limited.
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