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Significance of the localization of phosphorus among tissues on a cross-section of leaf lamina of Bornean tree species for phosphorus-use efficiency

Published online by Cambridge University Press:  13 June 2017

Yuki Tsujii ,
Masakazu Oikawa  and
Kanehiro Kitayama
Yuki Tsujii*
Affiliation:
Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606–8502 Kyoto, Japan
Masakazu Oikawa
Affiliation:
National Institute of Radiological Science, National Institute for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage-ku, Chiba 263–8555, Japan
Kanehiro Kitayama
Affiliation:
Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, 606–8502 Kyoto, Japan
*
*Corresponding author. Email: [email protected]
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Abstract:

A greater relative allocation of phosphorus (P) to photosynthetically active cells functions to maintain a rapid photosynthesis under P limitation, and may be a key mechanism of plants to use P efficiently. This mechanism has not been studied in tropical trees despite the productivity of tropical forests often being limited by P. In this study, the spatial distribution of P among tissues on a cross-section of leaf lamina was analysed for 13 tree species from P-limited sites on Mount Kinabalu, Borneo. Most species showed greater P concentration in palisade mesophyll than in spongy mesophyll and epidermal tissues, suggesting that tropical trees under P limitation localize foliar P in photosynthetic palisade mesophyll.

Keywords

anatomical structurefoliar-element distributionmicro-PIXEphosphorus deficiencyphosphorus-use efficiencyphotosynthesistropical forest
Type
Short Communication
Information
Journal of Tropical Ecology , Volume 33 , Issue 3 , May 2017 , pp. 237 - 240
Copyright
Copyright © Cambridge University Press 2017 

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