DRASTIC (Database Resource for the Analysis of Signal Transduction in Cells)

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Arabidopsis signalling


  A PDF diagram shows some of the early signaling events associated with the response of Arabidopsis to various biotic and abiotic signals. These include ABA, Botrytis cinerea, cold, drought, ethylene, flg22, heat, hydrogen peroxide, jasmonic acid (JA), oligogalacturonides,  osmotic shock,Pseudomonas spp., salicylic acid (SA), salt, UV-B and wounding. Information for the diagram has been sourced from various internet sites, particularly PubMed, and every attempt has been made to ensure accuracy. The diagram is best used as an aide to understanding signalling.  Diagram up-dated 21 November 2016.

Ceramide signalling

Download an A4 size PDF of the ceramide signalling pathway depicted in the larger diagram of 'Metabolic Pathways of the Diseased Potato'


cysteine metabolism




  A PDF diagram showing some of the metabolic pathways involving cysteine is available here. Diagram last up-dated 3 February 2012

Glutamine / glutamate pathways

Many metabolites are associated with multiple metabolic pathways. This can be demonstrated by looking at glutamine which is associated with a number of diverse metabolic pathways as well as its role as an amino acid involved in protein biosynthesis. A PDF can be downloaded showing several pathways involving glutamine / glutamate as a metabolite. Thus there are difficulties when constructing stress-responsive pathways in assigning some metabolites to specific pathways when other corroborating evidence is lacking.  This is particularly pertinent when considering drought responsive pathways as glutamine can accumulate in drought stressed leaves but it is not yet clear which pathway is leading to this glutamine accumulation.

Metabolic Pathways of the Diseased Potato (Solanum tuberosum)

Download a PDF of the 'Metabolic Pathways of the Diseased Potato' . References used as a source of information to create the chart can be downloaded from here. Diagram and references up-dated 16 May 2015.

Nuclear events associated with disease resistance-related plant responses

A PDF diagram (last up-dated 21 December 2012) of some of the Nuclear Events Associated with Disease Resistance can be downloaded. Some of the more recentReferences used as a source of information are also available though this is not a complete list (sorry!).   

Phosphoinositide Cascade

Download an A4 size PDF of the phosphoinositide cascade depicted in the larger diagram of 'Metabolic Pathways of the Diseased Potato'








Plant Drought Responses - Dicots

A PDF showing the Response of Dicots to Drought is available. Last up-dated 21 November 2016.





Plant Drought Responses - Monocots

 A PDF showing the response of monocots to drought is available. The greater detail shown in the diagram 'Plant Drought Responses - Dicots' undoubtedly reflects the larger research effort using Arabidopsis rather than a fundamental difference between Monocots and Dicots.  Diagram last up-dated 21 November 2016.

ROS and Nitric Oxide

A PDF showing metabolic pathways involving ROS and nitric oxide (NO) is available here. Diagram last up-dated 12 February 2013.










SUMO and Ubiquitin


  A PDF showing SUMOylation and Ubiquitination is available.


I have set up a Facebook account relating to this web site where people can leave comments, make suggestions, or ask questions. I will use it to state when new versions of these diagrams are available.

Page last updated 21 November 2016

Gary Lyon (Email : garydavidlyon@gmail.com)