|
| Status |
Public on Jan 22, 2007 |
| Title |
Systemic response to avirulent bacterial infection |
| Organism |
Arabidopsis thaliana |
| Experiment type |
Expression profiling by array
|
| Summary |
In the absence of adaptive immunity displayed by animals, plants respond locally to biotic challenge via inducible basal defense networks activated through recognition and response toconserved pathogen associated molecular patterns (PAMPs). In addition, immunity can be induced in tissues remote from infection sites via systemic acquired resistance (SAR), initiated following gene-for-gene recognition between plant resistance proteins and microbial effectors.The nature of the mobile signal and remotely activated networks responsible for establishing SAR remain unclear.
Here we show that despite the absence of PAMP contact, systemically responding leaves rapidly activate a SAR transcriptional signature with strong similarity to local basal defense. Jasmonates have previously been implicated in systemic signalling in response to wounding and plant herbivory but not SAR. We present several lines of evidence that suggest jasmonates may also be central to SAR. Jasmonic acid (JA) rapidly accumulates in phloem exudates of leaves challenged with an avirulent strain of Pseudomonas syringae. In systemically responding leaves transcripts associated with jasmonate biosynthesis are upregulated and JA increases transiently. SAR can be mimicked by foliar JA application and is abrogated in mutants impaired in jasmonate synthesis or response.
We conclude that, jasmonate signalling appears to mediate long-distance information transmission. Moreover, the systemic transcriptional response shares extraordinary overlap with local herbivory and wounding responses, indicating that jasmonates may be central to an evolutionarily conserved signalling network, which decodes multiple abiotic and biotic stress signals.
Experimenter name: William Truman
Experimenter phone: +44 (0)1392 263789
Experimenter fax: +44 (0)1392 263434
Experimenter address: School of Biosciences
Experimenter address: Geoffrey Pope Building
Experimenter address: Stocker Road
Experimenter address: Exeter
Experimenter address: Devon
Experimenter zip/postal_code: EX4 4QD
Experimenter country: UK
Keywords: infection
|
| |
|
| Overall design |
9 samples were used in this experiment
|
| |
|
| Contributor(s) |
Truman W, Grant M, Townsend H, Emmerson Z, Schildknecht B |
| Citation missing |
Has this study been published? Please login to update or notify GEO. |
| |
| Submission date |
Jan 22, 2007 |
| Last update date |
Aug 28, 2018 |
| Contact name |
Nottingham Arabidopsis Stock Centre (NASC) |
| E-mail(s) |
[email protected]
|
| Phone |
+44 (0)115 951 3237
|
| Fax |
+44 (0)115 951 3297
|
| URL |
http://arabidopsis.info/
|
| Organization name |
Nottingham Arabidopsis Stock Centre (NASC)
|
| Department |
School of Biosciences, University of Nottingham
|
| Street address |
Sutton Bonington Campus
|
| City |
Loughborough |
| ZIP/Postal code |
LE12 5RD |
| Country |
United Kingdom |
| |
|
| Platforms (1) |
| GPL198 |
[ATH1-121501] Affymetrix Arabidopsis ATH1 Genome Array |
|
| Samples (9)
|
| GSM157373 |
Truman_1-1_Pst-DC3000-4hpi_Rep1_ATH1 |
| GSM157374 |
Truman_1-2_Pst-DC3000(hrpA)-4hpi_Rep1_ATH1 |
| GSM157375 |
Truman_1-3_Pst-DC3000(avrRpm1)-4hpi_Rep1_ATH1 |
| GSM157376 |
Truman_1-4_Pst-DC3000-4hpi_Rep2_ATH1 |
| GSM157377 |
Truman_1-5_Pst-DC3000(hrpA)-4hpi_Rep2_ATH1 |
| GSM157378 |
Truman_1-6_Pst-DC3000(avrRpm1)-4hpi_Rep2_ATH1 |
| GSM157379 |
Truman_1-7_Pst-DC3000-4hpi_Rep3_ATH1 |
| GSM157380 |
Truman_1-8_Pst-DC3000(hrpA)-4hpi_Rep3_ATH1 |
| GSM157381 |
Truman_1-9_Pst-DC3000(avrRpm1)-4hpi_Rep3_ATH1 |
|
| Relations |
| BioProject |
PRJNA99157 |
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