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Small RNAs and Gene Network in a Durable Disease Resistance Gene-Mediated Defense Responses in Rice.
Monday, 2015/09/28 | 08:04:33

Hong H, Liu Y, Zhang H, Xiao J, Li X, Wang S.

PLoS One. 2015 Sep 3;10(9):e0137360. doi: 10.1371/journal.pone.0137360. eCollection 2015.

http://www.ncbi.nlm.nih.gov/pubmed/26335702

 

Abstract

Accumulating data have suggested that small RNAs (sRNAs) have important functions in plant responses to pathogen invasion. However, it is largely unknown whether and how sRNAs are involved in the regulation of rice responses to the invasion of Xanthomonas oryzae pv. oryzae (Xoo), which causes bacterial blight, the most devastating bacterial disease of rice worldwide. We performed simultaneous genome-wide analyses of the expression of sRNAs and genes during early defense responses of rice to Xoo mediated by a major disease resistance gene, Xa3/Xa26, which confers durable and race-specific qualitative resistance. A large number of sRNAs and genes showed differential expression in Xa3/Xa26-mediated resistance. These differentially expressed sRNAs include known microRNAs (miRNAs), unreported miRNAs, and small interfering RNAs. The candidate genes, with expression that was negatively correlated with the expression of sRNAs, were identified, indicating that these genes may be regulated by sRNAs in disease resistance in rice. These results provide a new perspective regarding the putative roles of sRNA candidates and their putative target genes in durable disease resistance in rice.

 

Fig 2 Differentially expressed miRNAs in susceptible (rice line MDJ8) and resistance (rice line Rb49) reactions.

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