ArticleTransgenic research2018
OXI1 kinase plays a key role in resistance of Arabidopsis towards aphids (Myzus persicae).
Article in Transgenic research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 35 citations in OpenAlex.
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- Redox responses of Arabidopsis thaliana to the green peach aphid, Myzus persicae.Molecular plant pathology · 2021Article
- Elevated production of reactive oxygen species is related to host plant resistance to sugarcane aphid in sorghum.Plant signaling & behavior · 2021Article
- Reactive Oxygen Species in Plant Interactions With Aphids.Frontiers in plant science · 2021Review
- Differential Defense Responses of Upland and Lowland Switchgrass Cultivars to a Cereal Aphid Pest.International journal of molecular sciences · 2020Article
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- Plant Genes Benefitting Aphids-Potential for Exploitation in Resistance Breeding.Frontiers in plant science · 2019Review
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plants have co-evolved with a diverse array of pathogens and insect herbivores and so have evolved an extensive repertoire of constitutive and induced defence mechanisms activated through complex signalling pathways. OXI1 kinase is required for activation of mitogen-activated protein kinases (MAPKs) and is an essential part of the signal transduction pathway linking oxidative burst signals to diverse downstream responses. Furthermore, changes in the levels of OXI1 appear to be crucial for appropriate signalling. Callose deposition also plays a key role in defence. Here we demonstrate, for the first time, that OXI1 plays an important role in defence against aphids. The Arabidopsis mutant, oxi1-2, showed significant resistance both in terms of population build-up (p < 0.001) and the rate of build-up (p < 0.001). Arabidopsis mutants for β-1,3-glucanase, gns2 and gns3, showed partial aphid resistance, significantly delaying developmental rate, taking two-fold longer to reach adulthood. Whilst β-1,3-glucanase genes GNS1, GNS2, GNS3 and GNS5 were not induced in oxi1-2 in response to aphid feeding, GNS2 was expressed to high levels in the corresponding WT (Col-0) in response to aphid feeding. Callose synthase GSL5 was up-regulated in oxi1-2 in response to aphids. The results suggest that resistance in oxi1-2 mutants is through induction of callose deposition via MAPKs resulting in ROS induction as an early response. Furthermore, the results suggest that the β-1,3-glucanase genes, especially GNS2, play an important role in host plant susceptibility to aphids. Better understanding of signalling cascades underpinning tolerance to biotic stress will help inform future breeding programmes for enhancing crop resilience.
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