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Schrader-Fischer G, Apel K. The Anticyclic Timing of Leaf Senescence in the Parasitic Plant Viscum album Is Closely Correlated with the Selective Degradation of Sulfur-Rich Viscotoxins. Plant Physiol. 1993;101(3):745-749doi: 10.1104/pp.101.3.745.
Schrader-Fischer, G., & Apel, K. (1993). The Anticyclic Timing of Leaf Senescence in the Parasitic Plant Viscum album Is Closely Correlated with the Selective Degradation of Sulfur-Rich Viscotoxins. Plant physiology, 101(3), 745-749. https://doi.org/10.1104/pp.101.3.745
Schrader-Fischer, G., and Apel, K.. "The Anticyclic Timing of Leaf Senescence in the Parasitic Plant Viscum album Is Closely Correlated with the Selective Degradation of Sulfur-Rich Viscotoxins." Plant physiology vol. 101,3 (1993): 745-749. doi: https://doi.org/10.1104/pp.101.3.745
Schrader-Fischer G, Apel K. The Anticyclic Timing of Leaf Senescence in the Parasitic Plant Viscum album Is Closely Correlated with the Selective Degradation of Sulfur-Rich Viscotoxins. Plant Physiol. 1993 Mar;101(3):745-749. doi: 10.1104/pp.101.3.745. PMID: 12231725; PMCID: PMC158686.
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Plant Physiol. 1993 Mar;101(3):745-749. doi: 10.1104/pp.101.3.745.

The Anticyclic Timing of Leaf Senescence in the Parasitic Plant Viscum album Is Closely Correlated with the Selective Degradation of Sulfur-Rich Viscotoxins.

Plant physiology

G. Schrader-Fischer, K. Apel

Affiliations

  1. Swiss Federal Institute of Technology (ETH), Institut fur Pflanzenwissenschaften, Abteiling Pflanzengenetik, Universitatsstrasse 2, 8092 Zurich, Switzerland.

PMID: 12231725 PMCID: PMC158686 DOI: 10.1104/pp.101.3.745

Abstract

Leaf senescence and abscission have been studied in the semi-parasitic plant mistletoe (Viscum album). Leaf senescence and abscission occur in the summer, when the metabolic activity of the host has reached its maximum. In contrast with their hosts, mistletoes selectively degrade only one major leaf protein during leaf senescence, the sulfur-rich viscotoxin, whereas most of the remaining leaf proteins are lost during abscission. The changes in viscotoxin content are paralleled by changes in the concentration of the corresponding mRNA. Shortly before the onset of leaf senescence, the mRNA for viscotoxin has disappeared from the leaves. The anticyclic timing of leaf senescence and the degradation of only one major leaf protein seems to reflect an adaptation of the parasite to its habitat.

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