Forest Metabolism: Influence of Air Contaminants on Photosynthesis and Respiration

1981 ◽  
pp. 202-227
Author(s):  
William H. Smith
Keyword(s):  
Air Contaminants ◽  
Photosynthesis And Respiration

251. Exposures to Ambient Volatile Organic Air Contaminants in A Lightly Industrialized City

2001 ◽  
Author(s):  
T. Hall ◽  
M. Phillips ◽  
A. Gibson ◽  
N. Esmen ◽  
D. Johnson ◽  
...  
Keyword(s):  
Air Contaminants ◽  
Volatile Organic

scholarly journals Transcriptomic Analysis of the Photosynthetic, Respiration, and Aerenchyma Adaptation Strategies in Bermudagrass (Cynodon dactylon) under Different Submergence Stress

2021 ◽  
Vol 22 (15) ◽  
pp. 7905
Author(s):  
Zhongxun Yuan ◽  
Xilu Ni ◽  
Muhammad Arif ◽  
Zhi Dong ◽  
Limiao Zhang ◽  
...  
Keyword(s):  
Carbon Fixation ◽  
Cynodon Dactylon ◽  
Chlorophyll Biosynthesis ◽  
Tca Cycle ◽  
Ethylene Signaling ◽  
Physiological Mechanisms ◽  
Cell Wall Modification ◽  
Aerenchyma Formation ◽  
Submergence Stress ◽  
Photosynthesis And Respiration

Submergence impedes photosynthesis and respiration but facilitates aerenchyma formation in bermudagrass. Still, the regulatory genes underlying these physiological responses are unclear in the literature. To identify differentially expressed genes (DEGs) related to these physiological mechanisms, we studied the expression of DEGs in aboveground and underground tissues of bermudagrass after a 7 d treatment under control (CK), shallow submergence (SS), and deep submergence (DS). Results show that compared with CK, 12276 and 12559 DEGs were identified under SS and DS, respectively. Among them, the DEGs closely related to the metabolism of chlorophyll biosynthesis, light-harvesting, protein complex, and carbon fixation were down-regulated in SS and DS. Meanwhile, a large number of DEGs involved in starch and sucrose hydrolase activities, glycolysis/gluconeogenesis, tricarboxylic acid (TCA) cycle, and oxidative phosphorylation were down-regulated in aboveground tissues of bermudagrass in SS and DS. Whereas in underground tissues of bermudagrass these DEGs were all up-regulated under SS, only beta-fructofuranosidase and α-amylase related genes were up-regulated under DS. In addition, we found that DEGs associated with ethylene signaling, Ca2+-ROS signaling, and cell wall modification were also up-regulated during aerenchyma formation in underground tissues of bermudagrass under SS and DS. These results provide the basis for further exploration of the regulatory and functional genes related to the adaptability of bermudagrass to submergence.

scholarly journals Morphological bases of phytoplankton energy management and physiological responses unveiled by 3D subcellular imaging

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Clarisse Uwizeye ◽  
Johan Decelle ◽  
Pierre-Henri Jouneau ◽  
Serena Flori ◽  
Benoit Gallet ◽  
...  
Keyword(s):  
Energy Management ◽  
Morphometric Analysis ◽  
Physiological Responses ◽  
High Light ◽  
Phytoplankton Diversity ◽  
Eukaryotic Phytoplankton ◽  
Evolutionarily Conserved ◽  
Photosynthetic Responses ◽  
Photosynthesis And Respiration ◽  
Subcellular Imaging

AbstractEukaryotic phytoplankton have a small global biomass but play major roles in primary production and climate. Despite improved understanding of phytoplankton diversity and evolution, we largely ignore the cellular bases of their environmental plasticity. By comparative 3D morphometric analysis across seven distant phytoplankton taxa, we observe constant volume occupancy by the main organelles and preserved volumetric ratios between plastids and mitochondria. We hypothesise that phytoplankton subcellular topology is modulated by energy-management constraints. Consistent with this, shifting the diatom Phaeodactylum from low to high light enhances photosynthesis and respiration, increases cell-volume occupancy by mitochondria and the plastid CO2-fixing pyrenoid, and boosts plastid-mitochondria contacts. Changes in organelle architectures and interactions also accompany Nannochloropsis acclimation to different trophic lifestyles, along with respiratory and photosynthetic responses. By revealing evolutionarily-conserved topologies of energy-managing organelles, and their role in phytoplankton acclimation, this work deciphers phytoplankton responses at subcellular scales.

scholarly journals Effect of Petroleum Oil Spray on Photosynthesis and Respiration in Citrus Leaves

1952 ◽  
Vol 27 (2) ◽  
pp. 269-278 ◽  
Author(s):  
R. T. Wedding ◽  
L. A. Riehl ◽  
W. A. Rhoads
Keyword(s):  
Citrus Leaves ◽  
Photosynthesis And Respiration ◽  
Petroleum Oil

In situ Measurement of Macrophyte Photosynthesis and Respiration in Shallow Lakes

2005 ◽  
Vol 131 (2) ◽  
pp. 315-319 ◽  
Author(s):  
Christopher G. Uchrin ◽  
John G. Hunter ◽  
Seok S. Park ◽  
Timothy M. Vadas
Keyword(s):  
Shallow Lakes ◽  
In Situ Measurement ◽  
Photosynthesis And Respiration

Multiple stressors in an estuarine system: Effects of nutrients, trace elements, and trophic complexity on benthic photosynthesis and respiration

Estuaries ◽  
2002 ◽  
Vol 25 (1) ◽  
pp. 57-69 ◽  
Author(s):  
Andrew E. Laursen ◽  
Sybil P. Seitzinger ◽  
Robert Dekorsey ◽  
James G. Sanders ◽  
Denise L. Breitburg ◽  
...  
Keyword(s):  
Trace Elements ◽  
Multiple Stressors ◽  
Estuarine System ◽  
Photosynthesis And Respiration

PHOTOSYNTHESIS AND RESPIRATION IN FIVE SPECIES OF BENTHIC FORAMINIFERA THAT HOST ALGAL ENDOSYMBIONTS

2011 ◽  
Vol 41 (4) ◽  
pp. 314-325 ◽  
Author(s):  
R. A. Walker ◽  
P. Hallock ◽  
J. J. Torres ◽  
G. A. Vargo
Keyword(s):  
Benthic Foraminifera ◽  
Photosynthesis And Respiration

Electron-transfer supercomplexes in photosynthesis and respiration

2000 ◽  
Vol 8 (11) ◽  
pp. 493-494 ◽  
Author(s):  
Hannu Myllykallio ◽  
Friedel Drepper ◽  
Paul Mathis ◽  
Fevzi Daldal
Keyword(s):  
Electron Transfer ◽  
Photosynthesis And Respiration
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