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Contrasting Patterns of Photosynthetic Acclimation and Photoinhibition in Two Evergreen Herbs from a Winter Deciduous Forest by John B. Skillman; Boyd R. Strain; C. Barry Osmond is a Environmental Science article available to read on EtoBox.

What is Contrasting Patterns of Photosynthetic Acclimation and Photoinhibition in Two Evergreen Herbs from a Winter Deciduous Forest about?

The relationship between the microclimate within an Oak-Hickory forest and photosynthetic characters of two resident evergreen herbs with contrasting leaf phenologies was investigated on a monthly basis for 1 full year. Heuchera americana has leaf flushes in the spring and fall, with average leaf life spans of 6-7 months. Hexastylis arifolia produces a single cohort of leaves each spring with a leaf life span of 12-13 months. We predicted that among evergreen plants inhabiting a seasonal habitat, a species for which the frequency of leaf turnover is greater than the frequency of seasonal extremes would have a greater annual range in photosynthetic capacity than a species that only produced a single flush of leaves during the year. Photosynthetic parameters, including apparent quantum yield, maximum photosynthetic capacity (P), temperature of maximum photosynthesis, photochemical efficiency of PSII and leaf nitrogen (N) and chlorophyll concentrations, were periodically measured under laboratory conditions in leaves sampled from natural populations of both species. Mature leaves of both species acclimated to changing understory conditions with the mean seasonal differences being sign

Who reads Contrasting Patterns of Photosynthetic Acclimation and Photoinhibition in Two Evergreen Herbs from a Winter Deciduous Forest?

Author

John B. Skillman; Boyd R. Strain; C. Barry Osmond

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC (ISSN 0029-8549)

Published

1996

Language

EN

Field

Environmental Science (Physical Sciences)