dc.contributor.author |
Stroud, Erin A |
|
dc.contributor.author |
Rikkerink, Erik HA |
|
dc.contributor.author |
Jayaraman, Jay |
|
dc.contributor.author |
Templeton, Matthew D |
|
dc.date.accessioned |
2022-02-22T23:13:30Z |
|
dc.date.available |
2022-02-22T23:13:30Z |
|
dc.date.issued |
2022-3 |
|
dc.identifier.issn |
0304-4238 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/58304 |
|
dc.description.abstract |
Bacterial canker, caused by the hemi-biotrophic pathogen Pseudomonas syringae pv. actinidiae (Psa), is the most serious disease of Actinidia species worldwide. Salicylic acid, a key plant defence hormone, plays a significant role in the induction of defence against Psa. Actigard™, a salicylic acid mimic, is commonly used to manage Psa by priming the plants’ endogenous salicylic acid-mediated defence response prior to infection. A considerable body of data exists on its effectiveness in orchard trials. Despite the horticultural significance, the dynamics of Psa populations in planta and the impact of Actigard™ priming on Psa survival overtime is difficult to follow given the numerous growth conditions and infection parameters that occur in the orchard environment. We set out to test whether a tissue culture system could be used to measure these properties. By correlating symptom development with endophytic Psa population growth, we demonstrate that disease development is controlled by a ‘mechanistic switch’, triggered by population size, which converts Psa from a biotrophic lifestyle to a necrotrophic lifestyle. Actigard™ treatment induced the expression of key salicylic acid defence genes to limit population growth resulting in an absence of disease-associated symptoms. Our data provides insight into the natural infection dynamics of Psa and the ability of the salicylic acid-mediated defence pathway to disrupt population growth and disease progression. |
|
dc.language |
en |
|
dc.publisher |
Elsevier BV |
|
dc.relation.ispartofseries |
Scientia Horticulturae |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.subject |
0601 Biochemistry and Cell Biology |
|
dc.subject |
0706 Horticultural Production |
|
dc.title |
Actigard™ induces a defence response to limit Pseudomonas syringae pv. actinidiae in Actinidia chinensis var. chinensis ‘Hort16A’ tissue culture plants. |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1016/j.scienta.2021.110806 |
|
pubs.begin-page |
110806 |
|
pubs.volume |
295 |
|
dc.date.updated |
2022-01-01T06:44:05Z |
|
dc.rights.holder |
Copyright: The author |
en |
pubs.end-page |
110806 |
|
pubs.publication-status |
Accepted |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Journal Article |
|
pubs.elements-id |
878294 |
|
pubs.number |
110806 |
|