Dark respiration of leaves and traps of terrestrial carnivorous plants: are there greater energetic costs in traps?

0340130 - BÚ 2010 RIV PL eng J - Journal Article
Adamec, Lubomír
Dark respiration of leaves and traps of terrestrial carnivorous plants: are there greater energetic costs in traps?
Central European Journal of Biology. Roč. 5, č. 1 (2010), s. 121-124. ISSN 1895-104X
Institutional research plan: CEZ:AV0Z60050516
Keywords : Aerobic respiration * metabolic costs * trap specialization
Subject RIV: EF - Botanics
Impact factor: 0.685, year: 2010

In this study, O2-based dark respiration rate (RD) in leaf and trap cuttings was compared in 9 terrestrial carnivorous plant species of 5 genera to decide whether traps represent a greater energetic (maintanence) cost than leaves or photosynthetic parts of traps. RD values of cut strips of traps or leaves of terrestrial carnivorous plants submerged in water ranged between 2.2 and 8.4 nmol g-1 s-1 (per unit dry weight) in pitcher traps of the genera Sarracenia, Nepenthes, and Cephalotus, while between 7.2 and 25 nmol g-1DW s-1 in fly-paper or snapping traps or leaves of Dionaea and Drosera. No clear relationship between RD values of traps (or pitcher walls) and leaves (or pitcher wings or petioles) was found.
Permanent Link: http://hdl.handle.net/11104/0183438