Kenneth L. Steffen
Pennsylvania State University
12 Papers
145 Citations
Kenneth L. Steffen is an academic researcher from Pennsylvania State University. The author has contributed to research in topics: Photoinhibition & Photosynthetic capacity. The author has an hindex of 10, co-authored 12 publications. Previous affiliations of Kenneth L. Steffen include University of Wisconsin-Madison.
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Papers
Light and Excess Manganese Implications for Oxidative Stress in Common Bean
TL;DR: The results suggest that Mn toxicity may be mediated by oxidative stress, and that the tolerant genotype may maintain higher ascorbate levels under stress than the sensitive genotype.
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Relative sensitivity of photosynthesis and respiration to freeze-thaw stress in herbaceous species : importance of realistic freeze-thaw protocols.
TL;DR: Examination of agriculturally relevant, climatological data from an 11 year period confirmed that air cooling rates in the freezing range do not exceed 2 degrees C/hour, and it was demonstrated, in the studies presented here, that simply increasing the actual cooling rate meant the difference between cell survival and cell death.
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Increased chilling tolerance and altered carbon metabolism in tomato leaves following application of mechanical stress
Elvira Keller,Kenneth L. Steffen +1 more
TL;DR: It is demonstrated that brushing can increase chilling tolerance in tomato plants and the observed differences in chilling tolerance and concentration of soluble sugars in the leaves may indicate an involvement of soluble sugar levels in acclimation to chilling.
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Influence of photosynthetic photon flux densities before and during long‐term chilling on xanthophyll cycle and chlorophyll fluorescence quenching in leaves of tomato (Lycopersicon hirsutum)
Sunyo Jung,Kenneth L. Steffen +1 more
TL;DR: It is suggested that light-acclimation before chilling affects the capacity of the plants to resist chilling-induced photoinhibition, and photoinhibitory quenching appears to be a major component forQuenching excessive energy at the latter stage of long-term chilling.
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Lipid peroxidation and α-tocopherol content in α-tocopherol-supplemented thylakoid membranes during UV-B exposure
John M DeLong,Kenneth L. Steffen +1 more
TL;DR: In this article, a volume of spinach thylakoid membranes were supplied with exogenous α -tocopherol to determine if elevated α-tocoperol levels would protect lipids from degradation induced by UV-B radiation exposure.
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