Potential Candidate Genes for Improving Rice Disease Resistance

Delteil, Amandine; Zhang, Jie; Lessard, Philippe; Morel, Jean-Benoît

doi:10.1007/s12284-009-9035-x

Cited by 46 publications

(43 citation statements)

References 98 publications

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“…S4). This corresponds to a high level of disease reduction compared with the range attained in transgenic lines obtained through misregulation of a set of defense-associated genes (Delteil et al, 2010). Consistently, an increased susceptibility of OsMADS26 OX lines to M. oryzae was also observed in the nethouse experiments, whereas the tested OsMADS26-down-regulated lines presented a reduction of susceptible lesions compared with the DR0 control (Supplemental Fig.…”

Section: Osmads26 Is a Negative Regulator Of Both Biotic And Abiotic supporting

confidence: 69%

OsMADS26 negatively regulates resistance to pathogens and drought tolerance in rice.

et al. 2015

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Functional analyses of MADS-box transcription factors in plants have unraveled their role in major developmental programs (e.g. flowering and floral organ identity) as well as stress-related developmental processes, such as abscission, fruit ripening, and senescence. Overexpression of the rice (Oryza sativa) MADS26 gene in rice has revealed a possible function related to stress response. Here, we show that OsMADS26-down-regulated plants exhibit enhanced resistance against two major rice pathogens: Magnaporthe oryzae and Xanthomonas oryzae. Despite this enhanced resistance to biotic stresses, OsMADS26-down-regulated plants also displayed enhanced tolerance to water deficit. These phenotypes were observed in both controlled and field conditions. Interestingly, alteration of OsMADS26 expression does not have a strong impact on plant development. Gene expression profiling revealed that a majority of genes misregulated in overexpresser and down-regulated OsMADS26 lines compared with control plants are associated to biotic or abiotic stress response. Altogether, our data indicate that OsMADS26 acts as an upstream regulator of stress-associated genes and thereby, a hub to modulate the response to various stresses in the rice plant.

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Section: Osmads26 Is a Negative Regulator Of Both Biotic And Abiotic supporting

confidence: 69%

OsMADS26 negatively regulates resistance to pathogens and drought tolerance in rice.

et al. 2015

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“…Plant immunity is governed by sophisticated systems involving perception receptors, signaling mediators, transcriptional regulators, and a line of anti-pathogen proteins (Jones and Dangl, 2006; Delteil et al, 2010; Liu et al, 2014). RKs are often responsible for perceiving internal and external signals.…”

Section: Discussionmentioning

confidence: 99%

Transcriptome Analysis Highlights Defense and Signaling Pathways Mediated by Rice pi21 Gene with Partial Resistance to Magnaporthe oryzae

Zhao

Yuan

et al. 2016

Front. Plant Sci.

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Rice blast disease is one of the most destructive rice diseases worldwide. The pi21 gene confers partial and durable resistance to Magnaporthe oryzae. However, little is known regarding the molecular mechanisms of resistance mediated by the loss-of-function of Pi21. In this study, comparative transcriptome profiling of the Pi21-RNAi transgenic rice line and Nipponbare with M. oryzae infection at different time points (0, 12, 24, 48, and 72 hpi) were investigated using RNA sequencing. The results generated 43,222 unique genes mapped to the rice genome. In total, 1109 differentially expressed genes (DEGs) were identified between the Pi21-RNAi line and Nipponbare with M. oryzae infection, with 103, 281, 209, 69, and 678 DEGs at 0, 12, 24, 48, and 72 hpi, respectively. Functional analysis showed that most of the DEGs were involved in metabolism, transport, signaling, and defense. Among the genes assigned to plant—pathogen interaction, we identified 43 receptor kinase genes associated with pathogen-associated molecular pattern recognition and calcium ion influx. The expression levels of brassinolide-insensitive 1, flagellin sensitive 2, and elongation factor Tu receptor, ethylene (ET) biosynthesis and signaling genes, were higher in the Pi21-RNAi line than Nipponbare. This suggested that there was a more robust PTI response in Pi21-RNAi plants and that ET signaling was important to rice blast resistance. We also identified 53 transcription factor genes, including WRKY, NAC, DOF, and ERF families that show differential expression between the two genotypes. This study highlights possible candidate genes that may serve a function in the partial rice blast resistance mediated by the loss-of-function of Pi21 and increase our understanding of the molecular mechanisms involved in partial resistance against M. oryzae.

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“…For example, Kim et al (2003) observed enhanced resistance when MOD1 and RCH-10 were coexpressed (Table 3). Delteil et al (2010) reviewed transgenic studies in rice and suggested that any resistance response that would translate into a reduction in disease levels below 50% compared to the control would be too weak to achieve effective resistance. These researchers suggested that Dm-AMP1 and Rs-AFP2 may be the best genes used to date in transgenic approaches.…”

Section: Sources Of Resistance To Shbmentioning

confidence: 99%

Resistance to rice sheath blight (Rhizoctonia solani Kühn) [(teleomorph: Thanatephorus cucumeris (A.B. Frank) Donk.] disease: current status and perspectives

2010

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Sheath blight (ShB) disease, caused by Rhizoctonia solani, is an economically important rice disease worldwide, especially in intensive production systems. Several studies have been conducted to identify sources for ShB resistance in different species of rice, including local accessions and landraces. To date, none of the genotypes screened are immune to ShB, although variation in levels of resistance have been reported. Several quantitative trait loci (QTL) for ShB resistance have been identified using mapping populations derived from indica or japonica rice. A total of 33 QTL associated with ShB resistance located on all 12 rice chromosomes have been reported, with ten of these colocalizing with QTL for morphological attributes, especially plant height, or for heading date. Sixteen QTL, from the same or differing genetic backgrounds, have been mapped at least twice. Of these, nine QTL were independent of morphological traits and heading date. We hypothesize that two main, distinct, mechanisms contribute to ShB resistance: physiological resistance and disease escape. Strategies to improve our understanding of the genetics of resistance to ShB are discussed.

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Potential Candidate Genes for Improving Rice Disease Resistance

Cited by 46 publications

References 98 publications

OsMADS26 negatively regulates resistance to pathogens and drought tolerance in rice.

OsMADS26 negatively regulates resistance to pathogens and drought tolerance in rice.

Transcriptome Analysis Highlights Defense and Signaling Pathways Mediated by Rice pi21 Gene with Partial Resistance to Magnaporthe oryzae

Resistance to rice sheath blight (Rhizoctonia solani Kühn) [(teleomorph: Thanatephorus cucumeris (A.B. Frank) Donk.] disease: current status and perspectives

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