Metabolic adaptation of Zostera marina (eelgrass) to diurnal periods of root anoxia

@article{Pregnall1984MetabolicAO,
  title={Metabolic adaptation of Zostera marina (eelgrass) to diurnal periods of root anoxia},
  author={A. Marshall Pregnall and R. D. Smith and Thomas A. Kursar and Randall S. Alberte},
  journal={Marine Biology},
  year={1984},
  volume={83},
  pages={141-147}
}
The temperate seagrass Zostera marina L. is common in coastal marine habitats characterized by the presence of reducing sediments. The roots of this seagrass grow in these anoxic sediments, yet eelgrass is highly productive. Through photosynthesis-dependent oxygen transport from leaves to roots, aerobic respiration is supported in eelgrass roots only during daylight; consequently, roots are subjected to diurnal periods of anoxia. Under anoxic root conditions, the amino acids alanine and γ-amino… 
Effects of anaerobiosis on root metabolism of Zostera marina (eelgrass): implications for survival in reducing sediments
TLDR
The contributions of these root metabolic responses to the ability of Z. marina to grow in reducing marine sediments are related to light-regulated interactions of shoots and roots that likely dictate depth penetration, distribution and ecological success of eelgrass.
Diurnal effects of anoxia on the metabolome of the seagrass Zostera marina
TLDR
This work demonstrates the applicability of metabolomics to assess low oxygen stress responses of Z. marina and allows us to propose an anoxia recovery model.
Oxygen Movement in Seagrasses
TLDR
There are several benefits to plant performance in maintaining a rich oxygen supply to all tissues including roots and rhizomes including root protection against invasion of reduced toxic compounds and metal ions from the surrounding sediment.
Age-related patterns of metabolism and biomass in subterranean tissues of Zostera marina (eelgrass)
Production and metabolic features of the rhizomatous marine angiosperm Zostera marina L. (eelgrass) from a subtidal meadow in Monterey Bay, Monterey, California, USA, were examined to assess the
Chapter 23 – Seagrass Habitats
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 30 REFERENCES
Structural and functional adaptations of eelgrass (Zostera marina L.) to the anaerobic sediment environment
Structural and functional adaptations of the seagrass Zostera marina L. to the anaerobic sediment environment were examined both experimentally and under natural conditions along a transect including
Ammonium regeneration and assimilation in eelgrass (Zostera marina) beds
TLDR
Net ammonium production (regeneration minus assimilation) in the sediment of Izembek Laggon met nitrogen demand for eelgrass growth, suggesting that ammonium regeneration in the sediments was very important for the nitrogen cycle in the eel Grass bed ecosystem.
Role of seagrass photosynthesis in root aerobic processes.
TLDR
The role of shoot photosynthesis as a means of supporting aerobic respiration in the roots of the seagrass Zostera marina was examined and O(2) transport to the root-rhizome system supported aerobic root respiration and in many cases exceeded respiratory requirements leading to O( 2) release from the subterranean tissue.
Anaerobiosis in Echinochloa crus-galli (Barnyard Grass) Seedlings : Intermediary Metabolism and Ethanol Tolerance.
TLDR
Echinochloa's ability to metabolize carbohydrate intermediates and to synthesize lipids indicates that mechanisms exist for providing the carbon intermediates for biosynthesis, particularly membrane synthesis for growth, even in the absence of O(2).
Irradiance reduction: Effects on standing crops of the eelgrass Zostera marina in a coastal lagoon
TLDR
Results of controlled field experiments confirmed that turion density is a function of the irradiance the plants receive, and abundance of the eelgrass Zostera marina L. was studied in a coastal lagoon in southern California, and was found to correlate with the level of irradiance at depths greater than 0.5 m below tidal datum.
...
1
2
3
...