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| Home > Publications database > A meta‐analysis of plant responses to light intensity for 70 traits ranging from molecules to whole plant performance |
| Home > Publications database > A meta‐analysis of plant responses to light intensity for 70 traits ranging from molecules to whole plant performance |
| Journal Article | FZJ-2019-03962 |
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2019
Wiley-Blackwell
Oxford [u.a.]
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Please use a persistent id in citations: http://hdl.handle.net/2128/25083 doi:10.1111/nph.15754
Abstract: By means of meta‐analyses we determined how 70 traits related to plant anatomy, morphology, chemistry, physiology, growth and reproduction are affected by daily light integral (DLI; mol photons m−2 d−1). A large database including 500 experiments with 760 plant species enabled us to determine generalized dose–response curves. Many traits increase with DLI in a saturating fashion. Some showed a more than 10‐fold increase over the DLI range of 1–50 mol m−2 d−1, such as the number of seeds produced per plant and the actual rate of photosynthesis. Strong decreases with DLI (up to three‐fold) were observed for leaf area ratio and leaf payback time. Plasticity differences among species groups were generally small compared with the overall responses to DLI. However, for a number of traits, including photosynthetic capacity and realized growth, we found woody and shade‐tolerant species to have lower plasticity. We further conclude that the direction and degree of trait changes adheres with responses to plant density and to vertical light gradients within plant canopies. This synthesis provides a strong quantitative basis for understanding plant acclimation to light, from molecular to whole plant responses, but also identifies the variables that currently form weak spots in our knowledge, such as respiration and reproductive characteristics.
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