Different reutilization of mineral nutrients in senescent leaves of aquatic and terrestrial carnivorous Utricularia species

0432957 - BÚ 2015 RIV NL eng J - Článek v odborném periodiku
Adamec, Lubomír
Different reutilization of mineral nutrients in senescent leaves of aquatic and terrestrial carnivorous Utricularia species.
Aquatic Botany. Roč. 119, č. 1 (2014), s. 1-6. ISSN 0304-3770. E-ISSN 1879-1522
Grant CEP: GA ČR(CZ) GAP504/11/0783
Institucionální podpora: RVO:67985939
Klíčová slova: Lentibulariaceae * dark respiration * leaf and trap N, P, K content
Kód oboru RIV: EF - Botanika
Impakt faktor: 1.608, rok: 2014

The efficiency of N, P and K reutilization in old traps and trap-free shoot segments in the submerged aquatic carnivorous plant Utricularia reflexa and the leaves of non-carnivorous Ceratophyllum submersum was compared with that in the leaves of five terrestrial Utricularia species. In U. reflexa shoots, the mean corrected reutilization efficiency for N was 19% in traps and 37% in leaf nodes and for P was 67% in traps and 52% in leaf nodes. However, the greatest K content both in traps and leaf nodes was found in the old organs and the K reutilization efficiency in both types of organs was negative. In Ceratophyllum leaves, the corrected N, P and K reutilization efficiencies were similar to U. reflexa leaves. In five terrestrial Utricularia species, the following corrected reutilization efficiencies were found: 35-82% for N, 56-84% for P, and 48-91% for K. Thus, reutilization of K in leafy shoots generally occurs only in terrestrial and not in aquatic plants.
Trvalý link: http://hdl.handle.net/11104/0241049