The U1 small nuclear ribonucleoprotein 70-kDa protein, a U1 small nuclear ribonucleoprotein-specific protein, has been shown to have multiple roles in nuclear precursor mRNA processing in animals. By using the C-terminal arginine-rich region of Arabidopsis U1-70K protein in the yeast two-hybrid system, we have identified an SC35-like (SR33) and a novel plant serine/arginine-rich (SR) protein (S...

The organization of the pre-mRNA splicing machinery has been extensively studied in mammalian and yeast cells and far less is known in living plant cells and different cell types of an intact organism. Here, we report on the expression, organization, and dynamics of pre-mRNA splicing factors (SR33, SR1/atSRp34, and atSRp30) under control of their endogenous promoters in Arabidopsis. Distinct ti...

The organization of the pre-mRNA splicing machinery has been extensively studied in mammalian and yeast cells and far less is known in living plant cells and different cell types of an intact organism. Here, we report on the expression, organization, and dynamics of pre-mRNA splicing factors (SR33, SR1/atSRp34, and atSRp30) under control of their endogenous promoters in Arabidopsis. Distinct ti...

Wheat stem rust, caused by Puccinia graminis f. sp. tritici, is a re-emerging disease, posing threat to wheat production. In Spain, rust has been rarely detected since the 1970s, but infection was observed in fields 2018. We analysed six samples collected Rota, Cádiz province and one from Monteagudo del Castillo, Teruel province. All Rota were typed as race TKTTF, whereas sample field adjacent ...

Arabidopsis REVERSION-TO-ETHYLENE SENSITIVITY1 (RTE1) represses ethylene hormone responses by promoting ethylene receptor ETHYLENE RESPONSE1 (ETR1) signaling, which negatively regulates ethylene responses. To investigate the regulation of RTE1, we performed a genetic screening for mutations that suppress ethylene insensitivity conferred by RTE1 overexpression in Arabidopsis. We isolated HYPER R...

pathogenicity of wheat stem rust was investigated during two cropping seasons of the years 2010 and 2011. towards this end, 47 isogenic lines of wheat stem rust along with 43 cultivars/lines of the crop were tested in field conditions (natural infection) and also in the greenhouse conditions. the results showed, similarity of pathogenicity for plants carring gene/s sr7b, sr8a, sr8b, sr9b, sr9d,...