Tagged: insect prey

Drosophyllum lusitanicum

Insect prey feeding strategies of a deep rooting dry-soil carnivorous plant

Nutrition of carnivorous plants has rarely been studied in dry-soil species with long, deep roots, with the focus hitherto on shallow-rooted genera from boggy soils. Paniw et al. assess the role of leaf (via fly feeding) and root (via soil fertilizer) nutrient uptake in growth promotion of Drosophyllum lusitanicum. Insect feeding significantly promotes growth, with no additive effect of soil fertilisation. A strong reliance on insect feeding in a carnivorous plant with well-developed roots is here quantified for the first time, challenging the prevailing cost-benefit hypothesis of the evolution of plant carnivory.

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Chitin-induced nepenthesin activity in the pitcher fluid of Nepenthes alata.

Prey-induced responses in carnivorous Nepenthes

Carnivorous plants of the genus Nepenthes catch and digest prey, mainly arthropods, in their pitcher traps in order to obtain additional nutrients such as nitrogen and phosphate. The digestive character of the pitcher fluid is well known; other features of the fluid are less well understood, in particular the induction and regulation of its composition. Here, Yilamujiang et al. study the induction of both phytohormones and digestion-related genes in the pitcher of Nepenthes alata. The authors demonstrate that insect prey as well as chitin is able to induce first jasmonate phytohormones which in turn can induce genes for digestive enzymes...

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