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Dark respiration and photosynthesis of dormant and sprouting turions of aquatic plants
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SYSNO ASEP 0369563 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dark respiration and photosynthesis of dormant and sprouting turions of aquatic plants Author(s) Adamec, Lubomír (BU-J) RID, ORCID Number of authors 1 Source Title Fundamental and Applied Limnology : Archiv für Hydrobiologie - ISSN 1863-9135
Roč. 179, č. 2 (2011), s. 151-158Number of pages 8 s. Language eng - English Country DE - Germany Keywords Carnivorous and non-carnivorous plants ; dormancy ; storage function Subject RIV EF - Botanics CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000295826800008 DOI 10.1127/1863-9135/2011/0179-0151 Annotation Turions are overwintering, dormant organs, produced by aquatic plants. In the spring, aerobic dark respiration (RD) and photosynthetic rates (PN) were measured as criteria of metabolic activity and photosynthetic capacity in dormant turions of 7 temperate aquatic plant species. These rates were also measured in old, original turion segments and in the newly formed shoots of sprouting turions. Two non-carnivorous rooting species (Caldesia parnassifolia, Hydrocharis morsus-ranae) and 5 carnivorous rootless species (Aldrovanda vesiculosa, Utricularia vulgaris, U. australis, U. stygia, U. bremii) were studied. RD values of dormant turions per unit fresh weight (range 1.1-5.4 mmol kg-1FW h-1) were significantly lower (1.9-13 times) for all species, except A. vesiculosa, than those for old segments of sprouting turions (range 5.2-14 mmol kg-1FW h-1). Turions of aquatic plants also function as important storage organs for mineral nutrients (N, P, S and Mg) to ensure the growth of new organs. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2012
Number of the records: 1