Die Fangblasen von Utricularia cf. praelonga St. Hil. und Utricularia dichotoma Lab. – eine rasterelektronenmikroskopische Untersuchung

Richter, Ursula

doi:10.1016/s0367-2530(17)31582-7

Cited by 2 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the occurrence of velum, our results support the observations of Lloyd (1932b, 1942, see Supplementary Material 1), Heide-Jørgensen (1989, 1991), Richter (1990) and Reifenrath et al. (2006).…”

Section: Discussionsupporting

confidence: 88%

See 1 more Smart Citation

The Structure and Occurrence of a Velum in Utricularia Traps (Lentibulariaceae)

et al. 2019

View full text Add to dashboard Cite

Bladderworts ( Utricularia , Lentibulariaceae , Lamiales) are carnivorous plants that form small suction traps (bladders) for catching invertebrates. The velum is a cuticle structure that is produced by specialized trichomes of the threshold pavement epithelium. It is believed that the velum together with the mucilage seals the free edge of the trap door and that it is necessary for correct functioning of the trap. However, recently, some authors have questioned the occurrence of a velum in the traps of the Utricularia from the various sections. The main aim of this study was to confirm whether velum occurs in the traps of the Utricularia species from the subgenera Polypompholyx , Bivalvaria , and Utricularia . The 15 species were examined from subg. Polypompholyx , subg. Bivalvaria , and subg. Utricularia . A velum was found in all examined Utricularia species. In the traps of the members of section Pleiochasia , there was an outer velum (forming a complete ring) and an inner velum. In the traps of Utricularia uniflora ( Lasiocaules ), there was only an inner velum. In these species, the formation of the velum was accompanied by intensive mucilage production, and as a result, when door was closed (set position), the mucilage and the velum touched the surface of the door. In members of both sections of Pleiochasia and Lasiocaules , the pavement epithelium had a more complicated structure (four to five zones) than in the members of the subgenera Bivalvaria and Utricularia in which three distinct zones occurred (an outer with a velum, a middle and an internal with the mucilage trichomes). Even in U. purpurea , where the threshold was a reduced pavement epithelium, it consisted of three functional zones and the presence of a velum. Two main types of velum have been proposed. A velum was present in Utricularia traps regardless of the trap type or the habitat (aquatic, epiphytic, and terrestrial species). We proposed broad definition of velum as cuticle membranes covered by mucilage; from a functional point of view, this definition is more useful and more reflects complexity of this structure.

show abstract

Section: Discussionsupporting

confidence: 88%

“…Fineran (1985) hypothesized that the pavement epithelium and velum in U. monanthos (section Pleiochasia ) were different compared to those in the trap type of U. vulgaris . Also Richter (1990) found differences with respect of the velum morphology between Utricularia cf. praelonga and U. dichotoma .…”

Section: Discussionmentioning

confidence: 89%

The Structure and Occurrence of a Velum in Utricularia Traps (Lentibulariaceae)

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The morphology of 434 New Zealand Journal of Botany, 2000, Vol. 38 the bladder has also been examined by scanning electron microscopy (Richter 1990). With respect to vegetative characters, we suggest that the morphological variability of the plant is related to various environmental conditions (Reut 1995(Reut ,1996Reut & Fineran 1999).…”

Section: Introductionmentioning

confidence: 92%

Ecology and vegetative morphology of the carnivorous plantUtricularia dichotorna(Lentibulariaceae) in New Zealand

Reut

Fineran

2000

New Zealand Journal of Botany

View full text Add to dashboard Cite

Among the populations studied, the corolla, peduncle, foliage leaf, and bladders occasionally exhibited a reddish or purple pigmentation, apparently developed in a response to different environmental factors.Keywords Utricularia dichotoma; Lentibulariaceae; carnivorous plant; vegetative morphology; anthocyanins; stolon; traps; vegetation ecology; wetlands Abstract The occurrence of the carnivorous plant Utricularia dichotoma (including U. monanthos and U. novae-zelandiae) within different habitats throughout New Zealand was studied. Qualitative investigations on its ecology focused on plant sociological criteria and soil characters, including the qualitative amount of water and soil chemistry. A list of associated plant species is also provided. Results indicate that U. dichotoma prefers open wet habitats. Once established, however, it may grow in fertile and permanently submerged sites. The vegetative morphology of the species from different populations was also examined and correlated with ecological factors. Utricularia dichotoma basically consists of runner stolons, from each node of which arise various combinations of leaves, bladders (traps), and anchor and runner stolons. Plants of some populations also show simply branched, bladderbearing intermediate types of anchor and runner stolons (designated "simple stolons"). Some nodes of runner stolons support the development of a peduncle. In the populations studied, the onset of a dry sunny period was typically followed by flowering. Plants from Kopouatai Peat Dome exhibited certain distinctive morphological features not found in other populations, including more bladders per plant. B98046

show abstract

Die Fangblasen von Utricularia cf. praelonga St. Hil. und Utricularia dichotoma Lab. – eine rasterelektronenmikroskopische Untersuchung

Cited by 2 publications

References 17 publications

The Structure and Occurrence of a Velum in Utricularia Traps (Lentibulariaceae)

The Structure and Occurrence of a Velum in Utricularia Traps (Lentibulariaceae)

Ecology and vegetative morphology of the carnivorous plantUtricularia dichotorna(Lentibulariaceae) in New Zealand

Contact Info

Product

Resources

About