Vulnerability of Zostera marina seedlings to physical stress
نویسندگان
چکیده
منابع مشابه
Effect of lightldark transition on carbon translocation in eelgrass Zostera marina seedlings
Carbon translocation in the marine macrophyte Zostera marina L. (eelgrass) was investigated to elucidate the impact of light/dark transitions on sucrose partitioning between roots and shoots. After exposure of leaves to 14Cbicarbonate, the level of I4C-labelled photoassimilates increased monotonically in both leaves and fully aerobic roots of plants maintained in the light. Accumulation of 14C ...
متن کاملEffect of Light/Dark Transition on Carbon Translocation in Eelgrass Zostera marina Seedlings
Carbon translocation in the marine macrophyte Zostera marina L. (eelgrass) was investigated to elucidate the impact of light/dark transitions on sucrose partitioning between roots and shoots. After exposure of leaves to 14Cbicarbonate, the level of I4C-labelled photoassimilates increased monotonically in both leaves and fully aerobic roots of plants maintained in the light. Accumulation of 14C ...
متن کاملMeristematic oxygen variability in eelgrass (Zostera marina)
We examined the variability in oxygen content of meristematic tissues in eelgrass in order to evaluate its potential role in events of sudden mass mortality within eelgrass beds. Oxygen content within intact eelgrass plants could be described by use of microelectrode techniques at high temporal and spatial resolution in the laboratory and in the field. Under both situations, the meristematic ox...
متن کاملDescription of a Zostera marina catalase gene involved in responses to temperature stress
Catalase (CAT) is an antioxidant enzyme that plays a significant role in cellular protection against oxidative damage by degradation of hydrogen peroxide to oxygen and water. In the present study, the complete CAT cDNA sequence of Zostera marina was identified through expressed sequence tags (EST) analysis and the rapid amplification of cDNA ends (RACE) technique. The nucleotide sequence of ZmC...
متن کاملPhysiological Responses of Zostera marina and Cymodocea nodosa to Light-Limitation Stress
The effects of light-limitation stress were investigated in natural stands of the seagrasses Zostera marina and Cymodocea nodosa in Ria Formosa coastal lagoon, southern Portugal. Three levels of light attenuation were imposed for 3 weeks in two adjacent meadows (2-3 m depth), each dominated by one species. The response of photosynthesis to light was determined with oxygen electrodes. Chlorophyl...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2010
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps08828