scholarly journals A polysaccharide deacetylase from Puccinia striiformis f. sp . tritici is an important pathogenicity gene that suppresses plant immunity

2020 ◽  
Vol 18 (8) ◽  
pp. 1830-1842 ◽  
Author(s):  
Qiang Xu ◽  
Jianfeng Wang ◽  
Jinren Zhao ◽  
Jinghua Xu ◽  
Shutian Sun ◽  
...  
Keyword(s):  
Puccinia Striiformis ◽  
Plant Immunity ◽  
Pathogenicity Gene

scholarly journals A Puccinia striiformis f. sp. tritici secreted protein activates plant immunity at the cell surface

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Bayantes Dagvadorj ◽  
Ahmet Caglar Ozketen ◽  
Ayse Andac ◽  
Cian Duggan ◽  
Tolga Osman Bozkurt ◽  
...  
Keyword(s):  
Cell Surface ◽  
Puccinia Striiformis ◽  
Plant Immunity ◽  
Secreted Protein

scholarly journals A NAC Transcription Factor TuNAC69 Contributes to ANK-NLR-WRKY NLR-Mediated Stripe Rust Resistance in the Diploid Wheat Triticum urartu

2022 ◽  
Vol 23 (1) ◽  
pp. 564
Author(s):  
Yang Xu ◽  
Shenghao Zou ◽  
Hao Zeng ◽  
Wei Wang ◽  
Bin Wang ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Stripe Rust ◽  
Transcriptional Activation ◽  
Puccinia Striiformis ◽  
Plant Immunity ◽  
Rust Fungus ◽  
Diploid Wheat ◽  
Stripe Rust Resistance ◽  
Virus Induced Gene Silencing ◽  
Triticum Urartu

Stripe rust is one of the most devastating diseases in wheat. Nucleotide-binding site (NBS) and leucine-rich repeat (LRR) domain receptors (NLRs) recognize pathogenic effectors and trigger plant immunity. We previously identified a unique NLR protein YrU1 in the diploid wheat Triticum urartu, which contains an N-terminal ANK domain and a C-terminal WRKY domain and confers disease resistance to stripe rust fungus Puccinia striiformis f. sp. Tritici (Pst). However, how YrU1 functions in disease resistance is not clear. In this study, through the RNA-seq analysis, we found that the expression of a NAC member TuNAC69 was significantly up-regulated after inoculation with Pst in the presence of YrU1. TuNAC69 was mainly localized in the nucleus and showed transcriptional activation in yeast. Knockdown TuNAC69 in diploid wheat Triticum urartu PI428309 that contains YrU1 by virus-induced gene silencing reduced the resistance to stripe rust. In addition, overexpression of TuNAC69 in Arabidopsis enhanced the resistance to powdery mildew Golovinomyces cichoracearum. In summary, our study indicates that TuNAC69 participates in the immune response mediated by NLR protein YrU1, and likely plays an important role in disease resistance to other pathogens.

In Silico Identification of the Full Complement of Subtilase-Encoding Genes and Characterization of the Role of TaSBT1.7 in Resistance Against Stripe Rust in Wheat

2020 ◽  
pp. PHYTO-05-20-017
Author(s):  
Yuheng Yang ◽  
Fengfeng Zhang ◽  
Tianyu Zhou ◽  
Anfei Fang ◽  
Yang Yu ◽  
...  
Keyword(s):  
Stripe Rust ◽  
In Silico ◽  
Puccinia Striiformis ◽  
Plant Immunity ◽  
Protein Domain ◽  
Virus Induced Gene Silencing ◽  
Positive Role ◽  
Full Complement ◽  
Wheat Leaves

Plant subtilases (SBTs) or subtilisin-like proteases comprise a very diverse family of serine peptidases that participates in a broad spectrum of biological functions. Despite increasing evidence for roles of SBTs in plant immunity in recent years, little is known about wheat (Triticum aestivum) SBTs (TaSBTs). Here, we identified 255 TaSBT genes from bread wheat using the latest version 2.0 of the reference genome sequence. The SBT family can be grouped into five clades, from TaSBT1 to TaSBT5, based on a phylogenetic tree constructed with deduced protein sequences. In silico protein-domain analysis revealed the existence of considerable sequence diversification of the TaSBT family which, together with the local clustered gene distribution, suggests that TaSBT genes have undergone extensive functional diversification. Among those TaSBT genes whose expression was altered by biotic factors, TaSBT1.7 was found to be induced in wheat leaves by chitin and flg22 elicitors, as well as six examined pathogens, implying a role for TaSBT1.7 in plant defense. Transient overexpression of TaSBT1.7 in Nicotiana benthamiana leaves resulted in necrotic cell death. Moreover, knocking down TaSBT1.7 in wheat using barley stripe mosaic virus-induced gene silencing compromised the hypersensitive response and resistance against Puccinia striiformis f. sp. tritici, the causal agent of wheat stripe rust. Taken together, this study defined the full complement of wheat SBT genes and provided evidence for a positive role of one particular member, TaSBT1.7, in the incompatible interaction between wheat and a stripe rust pathogen.

scholarly journals Candidate Effector Pst_8713 Impairs the Plant Immunity and Contributes to Virulence of Puccinia striiformis f. sp. tritici

2018 ◽  
Vol 9 ◽  
Author(s):  
Mengxin Zhao ◽  
Jianfeng Wang ◽  
Sen Ji ◽  
Zengju Chen ◽  
Jinghua Xu ◽  
...  
Keyword(s):  
Puccinia Striiformis ◽  
Plant Immunity
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