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The role of strigolactones and ethylene in disease caused by Pythium irregulare
Citation
Blake, SN and Barry, KM and Gill, WM and Reid, JB and Foo, E, The role of strigolactones and ethylene in disease caused by Pythium irregulare, Molecular Plant Pathology, 17, (5) pp. 680-690. ISSN 1464-6722 (2016) [Refereed Article]
Copyright Statement
Copyright 2015 BSPP AND JOHN WILEY
Abstract
Plant hormones play key roles in defence against pathogen attack.
Recent work has begun to extend this role to encompass not just
the traditional disease/stress hormones, such as ethylene, but also
growth-promoting hormones. Strigolactones (SLs) are the most
recently defined group of plant hormones with important roles in
plant–microbe interactions, as well as aspects of plant growth and
development, although the knowledge of their role in plant–
pathogen interactions is extremely limited. The oomycete Pythium
irregulare is a poorly controlled pathogen of many crops. Previous
work has indicated an important role for ethylene in defence
against this oomycete. We examined the role of ethylene and SLs
in response to this pathogen in pea (Pisum sativum L.) at the
molecular and whole-plant levels using a set of well-characterized
hormone mutants, including an ethylene-insensitive ein2 mutant
and SL-deficient and insensitive mutants.We identified a key role
for ethylene signalling in specific cell types that reduces pathogen
invasion, extending the work carried out in other species.
However, we found no evidence that SL biosynthesis or response
influences the interaction of pea with P. irregulare or that synthetic
SL influences the growth or hyphal branching of the
oomycete in vitro. Future work should seek to extend our understanding
of the role of SLs in other plant interactions, including
with other fungal, bacterial and viral pathogens, nematodes and
insect pests.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | strigolactone, disease, Pythium irregulare, ethylene, pea |
| Research Division: | Biological Sciences |
| Research Group: | Plant Biology |
| Research Field: | Plant Physiology |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Environmentally Sustainable Plant Production |
| Objective Field: | Environmentally Sustainable Plant Production not elsewhere classified |
| UTAS Author: | Blake, SN (Mrs Sara Blake) |
| UTAS Author: | Barry, KM (Dr Karen Barry) |
| UTAS Author: | Gill, WM (Dr Warwick Gill) |
| UTAS Author: | Reid, JB (Professor Jim Reid) |
| UTAS Author: | Foo, E (Dr Eloise Foo) |
| ID Code: | 106630 |
| Year Published: | 2016 |
| Funding Support: | Australian Research Council (FT140100770) |
| Web of Science® Times Cited: | 10 |
| Deposited By: | Plant Science |
| Deposited On: | 2016-02-16 |
| Last Modified: | 2017-11-06 |
| Downloads: | 0 |
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