title: Calcium signaling during the plant-plant interaction of parasitic Cuscuta reflexa with its hosts.
abstract: The plant parasite Cuscuta reflexa induces various responses in compatible and incompatible host plants. The visual reactions of both types of host plants including obvious morphological changes require the recognition of Cuscuta ssp. A consequently initiated signaling cascade is triggered which leads to a tolerance of the infection or, in the case of some incompatible host plants, to resistance. Calcium (Ca(2+)) release is the major second messenger during signal transduction. Therefore, we have studied Ca(2+) spiking in tomato and tobacco during infection with C. reflexa. In our recently published study Ca(2+) signals were monitored as bioluminescence in aequorin-expressing tomato plants after the onset of C. reflexa infestation. Signals at the attachment sites were observed from 30 to 48 h after infection. In an assay with leaf disks of aequorin-expressing tomato which were treated with different C. reflexa plant extracts it turned out that the substance that induced Ca(2+) release in the host plant was closely linked to the parasite's haustoria.
authors.affiliation: Center for Plant Molecular Biology, University of Tuebingen, Tuebingen, Germany. markus.albert@zmbp.uni-tuebingen.de
authors.forename: Markus
authors.initials: M
authors.lastname: Albert
authors.forename: Bettina
authors.initials: B
authors.lastname: Kaiser
authors.forename: Sander
authors.initials: S
authors.lastname: van der Krol
authors.forename: Ralf
authors.initials: R
authors.lastname: Kaldenhoff
mesh_terms: D000331:Aequorin / Q000378:metabolism; D020013:Calcium Signaling; D034182:Cuscuta / Q000502:physiology*; D060467:Disease Resistance / Q000502:physiology; D052836:Heterotrophic Processes; D006790:Host-Parasite Interactions / Q000502:physiology*; D049449:Luminescence; D018551:Solanum lycopersicum / Q000502:physiology*; D010935:Plant Diseases; D014026:Nicotiana / Q000502:physiology*
chemical_list: D000331:Aequorin
references.citation: Science. 2004 Feb 27;303(5662):1364-7
references.pmid: 14963334
references.citation: Plant Cell Environ. 2010 Feb;33(2):290-303
references.pmid: 19930126
references.citation: Cell. 1990 Feb 9;60(3):357-64
references.pmid: 2302732
references.citation: Plant Cell. 2000 Aug;12(8):1425-40
references.pmid: 10948260
references.citation: Nature. 2010 Mar 18;464(7287):418-22
references.pmid: 20164835
references.citation: Nat Rev Mol Cell Biol. 2005 Jul;6(7):555-66
references.pmid: 16072038
references.citation: J Exp Bot. 2001 Jan;52(354):173-7
references.pmid: 11181727
references.citation: Plant Biol (Stuttg). 2004 Jul;6(4):402-7
references.pmid: 15248122
references.citation: Plant Biol (Stuttg). 2010 May 1;12(3):554-7
references.pmid: 20522193
references.citation: Plant J. 2006 Nov;48(4):548-56
references.pmid: 17076801
references.citation: Curr Opin Plant Biol. 2003 Aug;6(4):358-64
references.pmid: 12873531
references.citation: Planta. 2001 Aug;213(4):550-5
references.pmid: 11556787
references.citation: J Exp Bot. 2001 Oct;52(363):2043-9
references.pmid: 11559740
references.citation: Cell. 1996 May 31;85(5):673-81
references.pmid: 8646776
references.citation: Science. 2006 Sep 29;313(5795):1964-7
references.pmid: 17008532
references.citation: Nature. 2006 Nov 16;444(7117):323-9
references.pmid: 17108957
references.citation: Eur J Cell Biol. 2010 Feb-Mar;89(2-3):200-7
references.pmid: 20034699