Influence of Altitude, Sampling Year and Needle Age Class on Stress-Physiological Reactions of Spruce Needles Investigated on an Alpine Altitude Profile

Bermadinger-Stabentheiner, Edith

doi:10.1016/s0176-1617(96)80262-8

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…Higher content of anti‐oxidants, and increased activities of reactive oxygen scavenging enzymes, have been documented after stress, or correlated with stress tolerance, in, for example, the dinoflagellate Peridinium gatunense ( Butow, Wynne & Tel‐Or 1994), brown algae of the genus Fucus ( Collén & Davison 1999a, b), spinach ( Spinacia oleracea ) ( Schöner & Krause 1990), alfalfa ( Medicago sativa ) ( McKersie et al 1993 ), maize ( Zea mays ) ( Pastori & Trippi 1993), tobacco ( Nicotiana tabacum ) ( Sen Gupta et al 1993 ), cotton cells ( Gossypium hirsutum ) ( Gossett et al 1996 ), and pea leaves ( Pisum sativum ) ( Donahue et al 1997 ). In alpine environments, where light, ultraviolet and freezing stress increase with altitude, so do levels of anti‐oxidants in alpine herbs and trees ( Bermadinger‐Stabentheiner 1996; Wildi & Lütz 1996). Overall, these findings suggest that more effective reactive oxygen metabolism may increase stress tolerance.…”

Section: Introductionmentioning

confidence: 99%

Stress tolerance and reactive oxygen metabolism in the intertidal red seaweeds Mastocarpus stellatus and Chondrus crispus

Collén

Davison

1999

Plant Cell & Environment

131

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Mastocarpus stellatus and Chondrus crispus are morphologically similar red seaweeds that co‐occur on rocky intertidal seashores in the Northern Atlantic. Mastocarpus stellatus grows higher on the shore and is more tolerant of environmental stress, caused by factors such as freezing and desiccation, than C. crispus. Here we report a correlation between reactive oxygen metabolism and stress tolerance, which suggests that reactive oxygen metabolism may play a role in stress tolerance of intertidal red seaweeds. Mastocarpus stellatus scavenged added H2O2 slightly faster, and was more resistant to oxidative stress induced by addition of H2O2 and Rose Bengal, than C. crispus. These data were consistent with higher levels of ascorbate and β‐carotene and higher activities of catalase and glutathione reductase, in M. stellatus. Tocopherol content and activities of superoxide dismutase and ascorbate peroxidase were similar in both species. Activities of reactive oxygen scavenging enzymes generally increased with tidal height in M. stellatus; this was, however, not a consistent trend in C. crispus.

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Section: Introductionmentioning

confidence: 99%

Stress tolerance and reactive oxygen metabolism in the intertidal red seaweeds Mastocarpus stellatus and Chondrus crispus

Collén

Davison

1999

Plant Cell & Environment

131

View full text Add to dashboard Cite

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“…Plants exposed to the light at higher elevations suffer from oxidative stress and need effective protection from free radicals (Bermadinger-Stabentheiner, 1996). Pinus mugo plants occupying the highest altitudes and exposed to strong light suffered a strong reduction in PSII photochemical efficiency.…”

Section: Discussionmentioning

confidence: 99%

“…Most likely, a highly effective antioxidative system is present in the needles of coniferous plants, several years old, growing in the mountains. In spruce needles, an increase in the level of antioxidants has been observed with increasing altitude, and this phenomenon was interpreted as a response of the needles to increasing oxidative stress (Bermadinger-Stabentheiner 1996). Field studies on Norway spruce trees from high altitudes have shown that SOD activities were sufficient to cope with a higher production of toxic oxygen species (Polle and Rennenberg 1995).…”

Section: Introductionmentioning

confidence: 99%