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Leaf anatomy and C4 photosynthetic enzymes in three reed ecotypes

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Biologia Plantarum

Abstract

Differences in leaf interveinal distances, chloroplasts distribution in bundle sheath cells (BSC) and activities of C4 photosynthetic enzymes in the leaves of three ecotypes of Phragmites communis Trinius, namely swamp reed (SR), heavy salt meadow reed (HSMR) and dune reed (DR), occurring in the desert region of northwest China were investigated. The two terrestrial ecotypes, DR and HSMR, had denser vascular system, more and longer BSC chloroplasts and higher capacity of CO2 concentrating mechanism of NAD-ME subtype as compared with the SR ecotype. The enhanced NADP-ME pathway in the HSMR might contribute to its adaptation to the salinity habitat.

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Abbreviations

Asp-AT and Ala-AT:

aspartate and alanine aminotransferase

NAD-ME and NADP-ME:

NAD- and NADP-dependent malic enzyme

NAD-MDH and NADP-MDH:

NAD- and NADP-malate dehydrogenase

PEP:

phosphoenolpyruvate

PEPC:

phosphoenolpyruvate carboxylase

PEP-CK:

phosphoenolpyruvate carboxykinase

PPDK:

pyruvate orthophosphate dikinase

RuBPC:

ribulose-1,5-bisphosphate carboxylase

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Acknowledgements

This study was supported by the National Natural Science Funds of China (No. 30470164) and the program for New Century Excellent Talents in Xiamen University (NCETXMU).

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Authors and Affiliations

  1. School of Life Sciences, Xiamen University, Xiamen, 361005, P.R. China

    X. -Y. Zhu, W. -X. Xia & L. -J. Chen

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  1. X. -Y. Zhu
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  2. W. -X. Xia
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  3. L. -J. Chen
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Correspondence to X. -Y. Zhu.

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Zhu, X.Y., Xia, W.X. & Chen, L.J. Leaf anatomy and C4 photosynthetic enzymes in three reed ecotypes. Biol Plant 56, 145–148 (2012). https://doi.org/10.1007/s10535-012-0031-4

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  • DOI: https://doi.org/10.1007/s10535-012-0031-4

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