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231224s2016 xx |||||o 00| ||eng c |
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Xiao, Yi
|e verfasserin
|4 aut
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|a The influence of leaf anatomy on the internal light environment and photosynthetic electron transport rate
|b exploration with a new leaf ray tracing model
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 13.11.2017
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|a Date Revised 26.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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| 520 |
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|a © The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Leaf photosynthesis is determined by biochemical properties and anatomical features. Here we developed a three-dimensional leaf model that can be used to evaluate the internal light environment of a leaf and its implications for whole-leaf electron transport rates (J). This model includes (i) the basic components of a leaf, such as the epidermis, palisade and spongy tissues, as well as the physical dimensions and arrangements of cell walls, vacuoles and chloroplasts; and (ii) an efficient forward ray-tracing algorithm, predicting the internal light environment for light of wavelengths between 400 and 2500nm. We studied the influence of leaf anatomy and ambient light on internal light conditions and J The results show that (i) different chloroplasts can experience drastically different light conditions, even when they are located at the same distance from the leaf surface; (ii) bundle sheath extensions, which are strips of parenchyma, collenchyma or sclerenchyma cells connecting the vascular bundles with the epidermis, can influence photosynthetic light-use efficiency of leaves; and (iii) chloroplast positioning can also influence the light-use efficiency of leaves. Mechanisms underlying leaf internal light heterogeneity and implications of the heterogeneity for photoprotection and for the convexity of the light response curves are discussed
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| 650 |
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Convexity
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| 650 |
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|a detour effect
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| 650 |
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|a focusing effect
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| 650 |
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|a leaf anatomy
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| 650 |
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|a photoinhibition
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| 650 |
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|a ray tracing model
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| 650 |
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|a sieve effect.
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| 700 |
1 |
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|a Tholen, Danny
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Xin-Guang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 67(2016), 21 vom: 01. Nov., Seite 6021-6035
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:67
|g year:2016
|g number:21
|g day:01
|g month:11
|g pages:6021-6035
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