OXI1 kinase plays a key role in resistance of Arabidopsis towards aphids (Myzus persicae)

Transgenic Research
Tahsin ShoalaAngharad M R Gatehouse

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 ...Continue Reading

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Citations

Dec 5, 2019·Frontiers in Plant Science·Inger ÅhmanLi-Hua Zhu
Jan 8, 2020·Horticulture Research·Mengjing SunBen Vosman
Jul 28, 2020·International Journal of Molecular Sciences·Luming YaoYina Jiang
Oct 31, 2020·International Journal of Molecular Sciences·Lise PingaultGautam Sarath
Jan 1, 2021·Horticulture Research·Mengjing SunBen Vosman
Mar 12, 2021·Plant Science : an International Journal of Experimental Plant Biology·Chuanbao WuWei Li
Apr 9, 2021·Molecular Plant Pathology·Junhuan XuFiona L Goggin

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Methods Mentioned

BETA
PCR
transgenic

Software Mentioned

Allele ID
Opticon Monitor

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