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The Arabidopsis altered in stress response2 is Impaired in Resistance to Root and Leaf Necrotrophic Fungal Pathogens

1
CSIRO Agriculture and Food, Centre for Environment and Life Sciences, Wembley, Western Australia 6913, Australia
2
The Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
3
Centre for Crop and Disease Management, Department of Environment and Agriculture, Curtin University, Bentley, Western Australia 6102, Australia
*
Author to whom correspondence should be addressed.
Plants 2019, 8(3), 60; https://doi.org/10.3390/plants8030060
Received: 14 February 2019 / Revised: 4 March 2019 / Accepted: 8 March 2019 / Published: 11 March 2019
The Arabidopsis thaliana Glutathione S-transferase Phi8 (GSTF8) gene is recognised as a marker for early defence and stress responses. To identify regulators of these responses, a forward genetic screen for Arabidopsis mutants with up-regulated GSTF8 promoter activity was conducted by screening a mutagenized population containing a GSTF8 promoter fragment fused to the luciferase reporter gene (GSTF8:LUC). We previously identified several enhanced stress response (esr) mutants from this screen that conferred constitutive GSTF8:LUC activity and increased resistance to several pathogens and/or insects pests. Here we identified a further mutant constitutively expressing GSTF8:LUC and termed altered in stress response2 (asr2). Unlike the esr mutants, asr2 was more susceptible to disease symptom development induced by two necrotrophic fungal pathogens; the root pathogen Fusarium oxysporum, and the leaf pathogen Alternaria brassicicola. The asr2 allele was mapped to a 2.1 Mbp region of chromosome 2 and narrowed to four candidate loci. View Full-Text
Keywords: disease susceptibility; GSTF8; necrotroph; jasmonate; At2g31320; At2g31400; At2g31990; At2g33170; At2g35170; At2g35740; At2g36420; At2g36835; At5g53060; CPL1; At4g21670 disease susceptibility; GSTF8; necrotroph; jasmonate; At2g31320; At2g31400; At2g31990; At2g33170; At2g35170; At2g35740; At2g36420; At2g36835; At5g53060; CPL1; At4g21670
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Thatcher, L.F.; Singh, K.B. The Arabidopsis altered in stress response2 is Impaired in Resistance to Root and Leaf Necrotrophic Fungal Pathogens. Plants 2019, 8, 60.

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