ArticlePlant cell reports2013
Isolation and characterization of a wheat IF2 homolog required for innate immunity to stripe rust.
Article in Plant cell reports, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 12 citations in OpenAlex.
- Identification of nuclear membrane SUN proteins and components associated with wheat fungal stress responses.Stress biology · 2024Article
- Genome-wide identification and characterization ofFrontiers in plant science · 2023Article
- A cyst nematode effector binds to diverse plant proteins, increases nematode susceptibility and affects root morphology.Molecular plant pathology · 2016Article
- Large-scale transcriptome comparison reveals distinct gene activations in wheat responding to stripe rust and powdery mildew.BMC genomics · 2014Article
- Long non-coding genes implicated in response to stripe rust pathogen stress in wheat (Triticum aestivum L.).Molecular biology reports · 2013Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
key messageThe wheat eIF2 homolog, TaIF2, is induced by the stripe rust pathogen CYR 32 at an early stage of inoculation and is related to the innate immunity resistance level in wheat. The initiation of translation represents a critical control point in the regulation of gene expression in all organisms. We previously identified an upregulated EST S186 (EL773056) from an SSH-cDNA library of the Shaanmai 139 strain of wheat (Triticum aestivum) infected with Puccinia striiformis (Pst). In the present work, we isolated a cDNA clone and identified it as a wheat IF2 homolog. This cDNA consisted of 1,314 nucleotides and contained an open reading frame of 795 nucleotides encoding a polypeptide of 254 amino acids. The amino acids represent a conserved domain in EF-Tu, mtIF2-II, and mtIF2-Ivc. The alignment result showed that it maybe a partial cDNA of the initiation factor 2/eukaryotic initiation factor 5B (IF2/eIF5B) superfamily gene. Paradoxically, results of a Swiss-model analysis suggesting a low QMEAN Z-score implied that it was a membrane protein. Quantitative RT-PCR studies confirmed that the wheat eIF2 (TaIF2) homolog was differentially expressed in three near-isogenic lines. Critical time points for the induction of resistance by inoculation with Pst CYR32 in YrSM139-1B + YrSM139-2D immune resistance genotype occurred at 1 and 3 dpi (days post-infection). RNAi test showed that the inoculated BSMV-IF2 leaves of Shaanmai 139 showed obvious cell death after 15 days of inoculation with CYR 32. qRT-PCR analysis of the target gene in cDNA samples isolated from BSMV-IF2-Pst, BSMV-0-Pst and Pst infected leaves confirmed that the expression of TaIF2 is suppressed by BSMV-IF2 at 3 dpi. This suggested that TaIF2/eIF5B plays an important role in the mechanism of innate immunity to stripe rust pathogen.
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