scholarly journals The Panicle Blast Resistance Mechanism of qPbm11 in the Rice Cultivar Miyazaki-mochi is Independent from that of Pb1

2019 ◽  
Vol 53 (4) ◽  
pp. 289-293
Author(s):  
Haruhiko INOUE ◽  
Nagao HAYASHI
Keyword(s):  
Blast Resistance ◽  
Resistance Mechanism ◽  
Rice Cultivar ◽  
Panicle Blast

scholarly journals Characterization and Genealogical Analysis of Panicle Blast Resistance in a RSV-resistant japonica Rice Cultivar Tsukinohikari and Related Cultivars.

1999 ◽  
Vol 1 (2) ◽  
pp. 69-76 ◽  
Author(s):  
Kiyoshi Fujii ◽  
Takamichi Tooyama ◽  
Naoki Sugiura ◽  
Norikuni Saka ◽  
Toshihiko Izawa ◽  
...  
Keyword(s):  
Blast Resistance ◽  
Rice Cultivar ◽  
Japonica Rice ◽  
Genealogical Analysis ◽  
Panicle Blast

scholarly journals Enhancement of Panicle Blast Resistance in Korean Rice Cultivar ‘Saeilmi’ by Marker Assisted Backcross Breeding

2015 ◽  
Vol 3 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Jong-Hee Lee ◽  
Ji-Yoon Lee ◽  
Young-Nam Yoon ◽  
Sang-Yeol Kim ◽  
Yeon-Jae Hur ◽  
...  
Keyword(s):  
Blast Resistance ◽  
Rice Cultivar ◽  
Panicle Blast ◽  
Backcross Breeding ◽  
Korean Rice ◽  
Marker Assisted Backcross Breeding

scholarly journals Understanding Rice-Magnaporthe Oryzae Interaction in Resistant and Susceptible Cultivars of Rice under Panicle Blast Infection Using a Time-Course Transcriptome Analysis

Genes ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 301
Author(s):  
Vishesh Kumar ◽  
Priyanka Jain ◽  
Sureshkumar Venkadesan ◽  
Suhas Gorakh Karkute ◽  
Jyotika Bhati ◽  
...  
Keyword(s):  
Cell Wall ◽  
Secondary Metabolites ◽  
Magnaporthe Oryzae ◽  
Transcriptome Analysis ◽  
Hormonal Regulation ◽  
Rice Blast ◽  
Blast Resistance ◽  
Differentially Expressed ◽  
Specific Response ◽  
Panicle Blast

Rice blast is a global threat to food security with up to 50% yield losses. Panicle blast is a more severe form of rice blast and the response of rice plant to leaf and panicle blast is distinct in different genotypes. To understand the specific response of rice in panicle blast, transcriptome analysis of blast resistant cultivar Tetep, and susceptible cultivar HP2216 was carried out using RNA-Seq approach after 48, 72 and 96 h of infection with Magnaporthe oryzae along with mock inoculation. Transcriptome data analysis of infected panicle tissues revealed that 3553 genes differentially expressed in HP2216 and 2491 genes in Tetep, which must be the responsible factor behind the differential disease response. The defense responsive genes are involved mainly in defense pathways namely, hormonal regulation, synthesis of reactive oxygen species, secondary metabolites and cell wall modification. The common differentially expressed genes in both the cultivars were defense responsive transcription factors, NBS-LRR genes, kinases, pathogenesis related genes and peroxidases. In Tetep, cell wall strengthening pathway represented by PMR5, dirigent, tubulin, cell wall proteins, chitinases, and proteases was found to be specifically enriched. Additionally, many novel genes having DOMON, VWF, and PCaP1 domains which are specific to cell membrane were highly expressed only in Tetep post infection, suggesting their role in panicle blast resistance. Thus, our study shows that panicle blast resistance is a complex phenomenon contributed by early defense response through ROS production and detoxification, MAPK and LRR signaling, accumulation of antimicrobial compounds and secondary metabolites, and cell wall strengthening to prevent the entry and spread of the fungi. The present investigation provided valuable candidate genes that can unravel the mechanisms of panicle blast resistance and help in the rice blast breeding program.

scholarly journals The OsOXO2, OsOXO3 and OsOXO4 Positively Regulate Panicle Blast Resistance in Rice

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Jingfang Dong ◽  
Lian Zhou ◽  
Aiqing Feng ◽  
Shaohong Zhang ◽  
Hua Fu ◽  
...  
Keyword(s):  
Signaling Pathways ◽  
Signaling Pathway ◽  
Molecular Mechanisms ◽  
Blast Resistance ◽  
Aba Signaling ◽  
Leaf Blast ◽  
Expression Levels ◽  
Panicle Blast ◽  
Localization Analysis ◽  
Sa Signaling

Abstract Background Although panicle blast is more destructive to yield loss than leaf blast in rice, the cloned genes that function in panicle blast resistance are still very limited and the molecular mechanisms underlying panicle blast resistance remain largely unknown. Results In the present study, we have confirmed that the three Oxalate oxidase (OXO) genes, OsOXO2, OsOXO3 and OsOXO4 from a blast-resistant cultivar BC10 function in panicle blast resistance in rice. The expression of OsOXO2, OsOXO3 and OsOXO4 were induced by panicle blast inoculation. Subcellular localization analysis revealed that the three OXO proteins are all localized in the nucleus and cytoplasm. Simultaneous silencing of OsOXO2, OsOXO3 and OsOXO4 decreased rice resistance to panicle blast, whereas the OsOXO2, OsOXO3 and OsOXO4 overexpression rice plants individually showed enhanced panicle blast resistance. More H2O2 and higher expression levels of PR genes were observed in the overexpressing plants than in the control plants, while the silencing plants exhibited less H2O2 and lower expression levels of PR genes compared to the control plants. Moreover, phytohormone treatment and the phytohormone signaling related gene expression analysis showed that panicle blast resistance mediated by the three OXO genes was associated with the activation of JA and ABA signaling pathways but suppression of SA signaling pathway. Conclusion OsOXO2, OsOXO3 and OsOXO4 positively regulate panicle blast resistance in rice. The OXO genes could modulate the accumulation of H2O2 and expression levels of PR gene in plants. Moreover, the OXO genes mediated panicle blast resistance could be regulated by ABA, SA and JA, and may be associated with the activation of JA and ABA signaling pathways but suppression of the SA signaling pathway.

scholarly journals Durable panicle blast-resistance gene Pb1 encodes an atypical CC-NBS-LRR protein and was generated by acquiring a promoter through local genome duplication

2010 ◽  
Vol 64 (3) ◽  
pp. 498-510 ◽  
Author(s):  
Nagao Hayashi ◽  
Haruhiko Inoue ◽  
Takahiro Kato ◽  
Taketo Funao ◽  
Masaki Shirota ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Genome Duplication ◽  
Blast Resistance ◽  
Blast Resistance Gene ◽  
Panicle Blast ◽  
Lrr Protein

scholarly journals Fine mapping of a panicle blast resistance gene Pb-bd1 in Japonica landrace Bodao and its application in rice breeding

Rice ◽  
2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Nengyan Fang ◽  
Xiaorui Wei ◽  
Lingtong Shen ◽  
Yao Yu ◽  
Mengya Li ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Fine Mapping ◽  
Blast Resistance ◽  
Rice Breeding ◽  
Blast Resistance Gene ◽  
Panicle Blast

Genetic Mapping ofMagnaporthe griseaAvirulence Gene Corresponding to Leaf and Panicle Blast Resistant QTLs in Jao Hom Nin Rice Cultivar

2009 ◽  
Vol 157 (6) ◽  
pp. 338-343 ◽  
Author(s):  
Tanee Sreewongchai ◽  
Siangchai Sriprakhon ◽  
Chankarn Wongsaprom ◽  
Apichart Vanavichit ◽  
Theerayut Toojinda ◽  
...  
Keyword(s):  
Genetic Mapping ◽  
Rice Cultivar ◽  
Panicle Blast

scholarly journals RFLP mapping of genes conferring complete and partial resistance to blast in a durably resistant rice cultivar.

Genetics ◽  
1994 ◽  
Vol 136 (4) ◽  
pp. 1421-1434 ◽  
Author(s):  
G L Wang ◽  
D J Mackill ◽  
J M Bonman ◽  
S R McCouch ◽  
M C Champoux ◽  
...  
Keyword(s):  
Partial Resistance ◽  
Blast Resistance ◽  
Durable Resistance ◽  
Complex Trait ◽  
Rice Cultivar ◽  
Blast Disease ◽  
Rflp Markers ◽  
Japonica Rice ◽  
Qualitative Resistance ◽  
Ri Lines

Abstract Moroberekan, a japonica rice cultivar with durable resistance to blast disease in Asia, was crossed to the highly susceptible indica cultivar, CO39, and 281 F7 recombinant inbred (RI) lines were produced by single seed descent. The population was evaluated for blast resistance in the greenhouse and the field, and was analyzed with 127 restriction fragment length polymorphism (RFLP) markers. Two dominant loci associated with qualitative resistance to five isolates of the fungus were tentatively named Pi-5(t) and Pi-7(t). They were mapped on chromosomes 4 and 11, respectively. To identify quantitative trait loci (QTLs) affecting partial resistance, RI lines were inoculated with isolate PO6-6 of Pyricularia oryzae in polycyclic tests. Ten chromosomal segments were found to be associated with effects on lesion number (P < 0.0001 and LOD > 6.0). Three of the markers associated with QTLs for partial resistance had been reported to be linked to complete blast resistance in previous studies. QTLs identified in greenhouse tests were good predictors of blast resistance at two field sites. This study illustrates the usefulness of RI lines for mapping a complex trait such as blast resistance and suggests that durable resistance in the traditional variety, Moroberekan, involves a complex of genes associated with both partial and complete resistance.

scholarly journals Identification and fine mapping of qPBR10-1, a novel locus controlling panicle blast resistance in Pigm-containing P/TGMS line

2021 ◽  
Author(s):  
Yunyu Wu ◽  
Ning Xiao ◽  
Yuhong Li ◽  
Qiang Gao ◽  
Yuese Ning ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Sequence Comparison ◽  
Blast Resistance ◽  
Rt Pcr ◽  
Advanced Backcross ◽  
Family Protein ◽  
Panicle Blast ◽  
Genes Encoding ◽  
Causal Candidate ◽  
Major Qtl

Abstract Background Rice blast is one of the most widespread and devastating diseases in rice production. Tremendous success has been achieved in identification and characterization of genes and quantitative trait loci (QTLs) conferring seedling blast resistance, however, genetic studies on panicle blast resistance have lagged far behind. Results In this study, two advanced backcross inbred sister lines (MSJ13 and MSJ18) were obtained in the process of introducing Pigm into C134S, and showed significant differences in the panicle blast resistance. One F2 population derived from the crossing MSJ13/MSJ18 was used to QTL mapping for panicle blast resistance using Genotyping by Sequencing (GBS) method. A total of 7 QTLs were identified, including a major QTL qPBR10-1 on chromosome 10 that explaining 24.21% of phenotypic variance with LOD scores of 6.62. Furthermore, qPBR10-1 was verified via the BC1F2 and BC1F3 population and narrowed to a 60.6-kb region with six candidate genes predicted, including two genes encoding exonuclease family protein, two genes encoding hypothetical protein, and two genes encoding transposon protein. The nucleotide variations and the expression patterns of the candidate genes were identified and analyzed between MSJ13 and MSJ18 through sequence comparison and RT-PCR approach, and results indicated that ORF1 and ORF2 encoding exonuclease family protein might be the causal candidate genes for panicle blast resistance in the qPBR10-1 locus. Conclusions A total of 7 QTLs conferring panicle blast resistance was identified from one F2 population derived from the crossing between two advanced backcross inbred sister lines MSJ13 and MSJ18, which harbored the broad-spectrum resistance gene Pigm. A major QTL qPBR10-1 was fine mapped in a 60.6-kb region with six candidate genes predicted, and ORF1 and ORF2 encoding exonuclease family protein might be the causal candidate genes for panicle blast resistance in the qPBR10-1 locus through sequence comparison and RT-PCR approach.

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