In addition, infection-inhibiting activity against M. oryzae was significantly enhanced in rice leaf sheaths pretreated with 10 μg/ml DMBQ. H2O2 generation was observed in rice leaves pretreated with DMBQ, and PAL, POX, CHS and PR10a were significantly expressed in these leaves. These results suggested that DMBQ can protect rice from blast disease caused by M. oryzae. “
“Forty-nine Phytophthora isolates were obtained from roots and crown of apricot trees with symptoms of decline grown in commercial orchards in Malatya, Elazığ and FK506 Diyarbakır provinces, Turkey, in 2011 and 2013. All of the recovered isolates were identified as Phytophthora palmivora on the basis
of morphological characteristics. Blast analysis of ITS region sequences of rDNA of 5 isolates revealed 100% identity with a reference Acalabrutinib ic50 isolates of P. palmivora from GenBank. Isolates of P. palmivora were pathogenic
on 12-month-old wild apricot rootstock ‘Zerdali’ plants that were wound inoculated on the roots and on the crown. This study demonstrated that P. palmivora is the cause of the crown and root rot found on apricot in Turkey. To our knowledge, this is the first report of P. palmivora on this host plant. “
“Foliar spray with BABA led to a significant reduction of lesion development in Brassica carinata caused by Alternaria brassicae. To get better insight mafosfamide into molecular mechanisms underlying priming of defence responses by BABA, expression pattern of BcWRKY genes and marker genes for the SA and JA pathway namely PR-1 and PDF 1.2 was examined. Q-RT-PCR analysis revealed priming of BcWRKY70, BcWRKY11 and BcWRKY53 gene expression in BABA-pretreated Brassica plants challenged with pathogen. However, the expression of BcWRKY72 and BcWRKY18
remained unchanged. Furthermore, BcWRKY7 gene was found to be upregulated in water-treated plants in response to pathogen indicating its role in susceptibility. In addition, BABA application potentiated expression of defence genes PR-1, PDF1.2 and PAL in response to the pathogen. In conclusion, BABA-primed expression of BcWRKY70, BcWRKY11 and BcWRKY53 genes is strongly correlated with enhanced expression of PR-1, PDF1.2 and PAL hence suggesting their role in BABA-induced resistance. “
“Accumulating functional genomic data in rice are unveiling the role of regulatory genes and their significance in modulating responses to complex traits like stress tolerance. Rice Osmyb4 is one such gene coding for transcription factor, and the homologous and heterologous ectopic expression has proved increased tolerance to several abiotic stress and few biotic stresses in plants. Nevertheless, the role of this gene in rice plants for disease resistance has not been studied.