Projects per year
Redox-associated events are important in plant development and responses to environmental stresses. In this study, we investigated spatial redox responses of cucumber (Cucumis sativus L.) leaves to biotic stress (Fusarium infection) or abiotic stress (water stress). Plants were grown under hydroponic conditions and either treated with polyethylene glycol to simulate drought or infected with Fusarium oxysporum f. sp. cucumerinum. Both water stress and Fusarium infection restricted cucumber growth and were associated with cellular plasma-membrane damage, reactive oxygen species accumulation, and changes in antioxidants; however, the responses to each stress were distinctive. Under water stress, H2O2 generation at the leaf edge increased 29.7% compared with that at the centre but with Fusarium infection there was a relative 10.4% decrease at the edge. These changes correlated with changes in antioxidants and linked enzyme activities. The key sources of variation in oxidative events were defined by principal component analysis of all of the data and redox balance evaluations. We suggest that these spatial differences under water stress and Fusarium infection arise from discrete regulatory mechanisms, reflecting either developmental effect over the leaf regions or systemic anti-oxidative events occurred following infection
|Number of pages||10|
|Early online date||29 May 2018|
|Publication status||Published - 01 Sept 2018|
- fusarium wilt
- leaf regions
- redox imbalance
- water stress
FingerprintDive into the research topics of 'Redox imbalance contributed differently to membrane damage of cucumber leaves under water stress and Fusarium infection'. Together they form a unique fingerprint.
- 1 Finished
A China-UK consortium to reduce environmental pollution with novel grass varieties
Humphreys, M., Scullion, J., Doonan, J., Han, J. & Mur, L.
Biotechnology and Biological Sciences Research Council
02 Aug 2015 → 01 Aug 2019
Project: Externally funded research