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Plants communicate at a molecular level

Biologists identify a protein which recognizes Cuscuta as a parasite

Date:
October 20, 2020
Source:
University of Erlangen-Nuremberg
Summary:
Biologists have discovered how tomato plants identify Cuscuta as a parasite. The plant has a protein in its cell walls that is identified as 'foreign' by a receptor in the tomato.
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Working together with researchers from the University of Tübingen, the University of Tromsø, the UC Davis and the Sainsbury Laboratory in Norwich, biologists from FAU have discovered how tomato plants identify Cuscuta as a parasite. The plant has a protein in its cell walls that is identified as 'foreign' by a receptor in the tomato.

Cuscuta spp., also known as dodder, is a parasitic vine which grafts to the host plant using special suckers to obtain water, minerals and carbohydrates. The parasite also attacks and damages crops such as oilseed rape, sweetcorn, soy, flax or clover. Although the infection generally goes undetected by the host, some species of tomato actively defend themselves by forming wooden tissue which prevents the suckers from penetrating the plant. In earlier research, the biologists at FAU discovered that these tomatoes possess a special receptor, the Cuscuta receptor 1 (CuRe1), which triggers the defence mechanism. However, until now it was unclear how the receptor recognises the danger posed by the dodder.

The researchers have now succeeded in answering this question: the dodder possesses a specific marker in its cellular wall, a glycine-rich protein (GRP). Using its receptor CuRe1, the tomato is able to recognise the molecular pattern of the GRP and identify the dodder as a pathogen, and triggers the immune reaction as a result. The new findings concerning the molecular dialogue between the Cuscuta marker and the tomato receptor may help to increase the resistance of crop plants against parasitic plants.


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Materials provided by University of Erlangen-Nuremberg. Note: Content may be edited for style and length.


Journal Reference:

  1. Volker Hegenauer, Peter Slaby, Max Körner, Julien-Alexander Bruckmüller, Ronja Burggraf, Isabell Albert, Bettina Kaiser, Birgit Löffelhardt, Irina Droste-Borel, Jan Sklenar, Frank L. H. Menke, Boris Maček, Aashish Ranjan, Neelima Sinha, Thorsten Nürnberger, Georg Felix, Kirsten Krause, Mark Stahl, Markus Albert. The tomato receptor CuRe1 senses a cell wall protein to identify Cuscuta as a pathogen. Nature Communications, 2020; 11 (1) DOI: 10.1038/s41467-020-19147-4

Cite This Page:

University of Erlangen-Nuremberg. "Plants communicate at a molecular level." ScienceDaily. ScienceDaily, 20 October 2020. <www.sciencedaily.com/releases/2020/10/201020105524.htm>.
University of Erlangen-Nuremberg. (2020, October 20). Plants communicate at a molecular level. ScienceDaily. Retrieved July 18, 2024 from www.sciencedaily.com/releases/2020/10/201020105524.htm
University of Erlangen-Nuremberg. "Plants communicate at a molecular level." ScienceDaily. www.sciencedaily.com/releases/2020/10/201020105524.htm (accessed July 18, 2024).

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