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Leaf optical properties in amphibious plant species are affected by multiple leaf traits

  • PLANTS IN HYDROSYSTEMS
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Abstract

The amphibious plant species Sagittaria sagittifolia and Ranunculus lingua here serve as model systems to study differences in leaf optical properties of different leaf types that develop in aquatic and terrestrial environments. We aimed to determine leaf traits that explain most of the variability in the reflectance and transmittance spectra in the range from 280 to 880 nm. Comparisons of leaves of the same form revealed marked differences in their structures and particularly in the content of total methanol-soluble UV-absorbing compounds. Submerged leaves transmit radiation over the whole range measured, but emerged leaves transmit only at wavelengths from 500 to 650 nm, and above 690 nm. Redundancy analysis shows that biochemical leaf traits, namely the UV-absorbing compounds chlorophyll a and b, together with the specific leaf area (SLA), significantly affect the reflectance spectra, explaining 60% of the spectra variability. Pigment levels negatively affect reflectance, while the effect of SLA is positive. Physical traits like thickness of the palisade mesophyll, SLA, and thickness of the lower and upper epidermis, along with anthocyanin content, explain 62% of the transmittance spectra variability. This study provides new insight into the understanding of data collected for aquatic and semi-aquatic plants based on spectral analyses.

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Acknowledgements

The work was supported by the Ministry of Education, Science and Sport, Republic of Slovenia, through the programmes ‘Biology of plants’ (P1-0212) and ‘Young researchers’ (33135). The authors thank Anja Štular for assistance in practical work.

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Authors and Affiliations

  1. Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, 1000, Ljubljana, Slovenia

    Katja Klančnik, Marina Pančić & Alenka Gaberščik

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  1. Katja Klančnik
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  2. Marina Pančić
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  3. Alenka Gaberščik
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Correspondence to Katja Klančnik.

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Guest editors: M. T. Ferreira, M. O'Hare, K. Szoszkiewicz & S. Hellsten / Plants in Hydrosystems: From Functional Ecology to Weed Research

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Klančnik, K., Pančić, M. & Gaberščik, A. Leaf optical properties in amphibious plant species are affected by multiple leaf traits. Hydrobiologia 737, 121–130 (2014). https://doi.org/10.1007/s10750-013-1646-y

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  • DOI: https://doi.org/10.1007/s10750-013-1646-y

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