PLoS ONE (2015) 10 (2 - e0117067)

Choon Meng Tan, Meng-Ying Li, Pei-Yun Yang, Shu Heng Chang, Yi-Ping Ho, Hong Lin, Wen-Ling Deng and Jun-Yi Yang (2015)
Arabidopsis HFR1 is a potential nuclear substrate regulated by the Xanthomonas type III effector XopD_Xcc8004
PLoS ONE 10 (2 - e0117067)
Abstract: XopD_Xcc8004, a type III effector of Xanthomonas campestris pv. campestris (Xcc) 8004, is considered a shorter version of the XopD, which lacks the N-terminal domain. To understand the functions of XopD_Xcc8004, in planta, a transgenic approach combined with inducible promoter to analyze the effects of XopD_Xcc8004 in Arabidopsis was done. Here, the expression of XopD_Xcc8004, in Arabidopsis elicited the accumulation of host defense-response genes. These molecular changes were dependent on salicylic acid and correlated with lesion-mimic phenotypes observed in XVE::XopD_Xcc8004 transgenic plants. Moreover, XopD_Xcc8004 was able to desumoylate HFR1, a basic helix-loop-helix transcription factor involved in photomorphogenesis, through SUMO protease activity. Interestingly, the hfr1-201 mutant increased the expression of host defense-response genes and displayed a resistance phenotype to Xcc8004. These data suggest that HFR1 is involved in plant innate immunity and is potentially regulated by XopD_Xcc8004.
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Database assignments for author(s): Hong Lin

Research topic(s) for pests/diseases/weeds:
molecular biology - genes
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Xanthomonas campestris
	Xanthomonas campestris pv. campestris