Strategies to Manage Rice Sheath Blight: Lessons from Interactions between Rice and Rhizoctonia solani

AbstractRhizoctonia solani is an important phytopathogenic fungus with a wide host range and worldwide distribution. The anastomosis group AG1 IA of R. solani has been identified as the predominant causal agent of rice sheath blight, one of the most devastating diseases of crop plants. As a necrotrophic pathogen, R. solani exhibits many characteristics different from biotrophic and hemi-biotrophic pathogens during co-evolutionary interaction with host plants. Various types of secondary metabolites, carbohydrate-active enzymes, secreted proteins and effectors have been revealed to be essential pathogenicity factors in R. solani. Meanwhile, reactive oxygen species, phytohormone signaling, transcription factors and many other defense-associated genes have been identified to contribute to sheath blight resistance in rice. Here, we summarize the recent advances in studies on molecular interactions between rice and R. solani. Based on knowledge of rice-R. solani interactions and sheath blight resistance QTLs, multiple effective strategies have been developed to generate rice cultivars with enhanced sheath blight resistance.

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Sheath-blight resistance QTLS in japonica rice germplasm

Euphytica ◽

10.1007/s10681-011-0475-1 ◽

2011 ◽

Vol 184 (1) ◽

pp. 23-34 ◽

Cited By ~ 17

Author(s):

J. C. Nelson ◽

J. H. Oard ◽

D. Groth ◽

H. S. Utomo ◽

Y. Jia ◽

...

Keyword(s):

Sheath Blight ◽

Blight Resistance ◽

Japonica Rice ◽

Resistance Qtls ◽

Rice Germplasm ◽

Sheath Blight Resistance

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Genetic Mapping of Sheath Blight Resistance QTLs within Tropical Japonica Rice Cultivars

Crop Science ◽

10.2135/cropsci2008.03.0124 ◽

2009 ◽

Vol 49 (1) ◽

pp. 256-264 ◽

Cited By ~ 42

Author(s):

Arun Sharma ◽

Anna M. McClung ◽

Shannon R. M. Pinson ◽

Joseph L. Kepiro ◽

A. Robert Shank ◽

...

Keyword(s):

Genetic Mapping ◽

Sheath Blight ◽

Blight Resistance ◽

Japonica Rice ◽

Rice Cultivars ◽

Resistance Qtls ◽

Tropical Japonica ◽

Sheath Blight Resistance

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Linkage disequilibrium analysis of rice sheath blight resistance markers of rice grown in the cold region of Northeast China

Genetika ◽

10.2298/gensr1803943l ◽

2018 ◽

Vol 50 (3) ◽

pp. 943-958 ◽

Cited By ~ 1

Author(s):

Xiu-Ping Li ◽

Wen-Dong Ma ◽

Wei Chang ◽

Chunbo Liang ◽

Hai-Xin Zhao ◽

...

Keyword(s):

Linkage Disequilibrium ◽

Northeast China ◽

Sheath Blight ◽

Blight Resistance ◽

Rice Sheath Blight ◽

Linkage Disequilibrium Analysis ◽

Cold Region ◽

Resistance Markers ◽

Sheath Blight Resistance

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Analysis of Differentially Expressed Rice Genes Reveals the ATP-Binding Cassette (ABC) Transporters as a Candidate Gene Against the Sheath Blight Pathogen, Rhizoctonia solani

PhytoFrontiers™ ◽

10.1094/phytofr-05-21-0035-r ◽

2021 ◽

Author(s):

Youngjae Oh ◽

Seonghee Lee ◽

Renee Arielle Rioux ◽

Pratibha Singh ◽

Melissa H Jia ◽

...

Keyword(s):

Gene Family ◽

Rhizoctonia Solani ◽

Cdna Library ◽

Abc Transporters ◽

Sheath Blight ◽

Differentially Expressed ◽

Blight Resistance ◽

Atp Binding ◽

Resistance Qtl ◽

Sheath Blight Resistance

Sheath blight is a serious rice disease worldwide and genes involved in resistance remain unclear. In the present study, a virulent field isolate of Rhizoctonia solani was used to inoculate detached leaves of a sheath blight resistant rice cultivar ‘Jasmine 85’, a suppression subtractive cDNA library was constructed using RNA isolated 16 hours post inoculation (hpi), and differentially expressed genes were identified from the cDNA library. A total of 159 uniquely expressed sequence tags were identified, including 105 from rice with enrichment in categories related to cellular response, molecular signaling and host defense. Coupled with gene expression studies by DNA microarray, 27 highly induced genes involved in signal transduction and defense responses were identified within 16 hpi. Three members of the ABC transporter gene family (OsABC1, OsABC9 and OsABC12) encoding pleiotropic drug resistance (PDR)-like ATP binding cassette (ABC) transporters were mapped to different sheath blight resistance QTL and their differential expressions were validated. Three high-resolution melting (HRM) markers were developed from these ABC gene family members to distinguish alleles between sheath blight susceptible cultivar ‘Lemont’ and resistant cultivar ‘Jasmine 85’. Association of sheath blight resistance to these HRM markers was examined in 77 recombinant inbred lines derived from the cross between ‘Jasmine 85’ and “Lemont”. The OsABC9 gene located in a major sheath blight resistance QTL qShB9-2 showed a major contribution to sheath blight resistance. These results are useful for marker assisted section and functional validation of the ABC genes in sheath blight disease resistance.

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Functional analysis of OsPGIP1 in rice sheath blight resistance

Plant Molecular Biology ◽

10.1007/s11103-014-0269-7 ◽

2014 ◽

Vol 87 (1-2) ◽

pp. 181-191 ◽

Cited By ~ 32

Author(s):

Rui Wang ◽

Liaoxun Lu ◽

Xuebiao Pan ◽

Zongliang Hu ◽

Fei Ling ◽

...

Keyword(s):

Functional Analysis ◽

Sheath Blight ◽

Blight Resistance ◽

Rice Sheath Blight ◽

Sheath Blight Resistance

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Mining favorable alleles for rice sheath blight resistance by association mapping

Plant Growth Regulation ◽

10.1007/s10725-021-00696-7 ◽

2021 ◽

Vol 94 (1) ◽

pp. 61-72

Author(s):

Jun-jie Dong ◽

Yu-xiang Zeng ◽

Zhi-juan Ji ◽

Yuan Chen ◽

Shu-zhen Wang ◽

...

Keyword(s):

Association Mapping ◽

Sheath Blight ◽

Blight Resistance ◽

Rice Sheath Blight ◽

Favorable Alleles ◽

Sheath Blight Resistance

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Divergence Between Sympatric Rice- and Soybean-Infecting Populations of Rhizoctonia solani Anastomosis Group-1 IA

Phytopathology ◽

10.1094/phyto-98-12-1326 ◽

2008 ◽

Vol 98 (12) ◽

pp. 1326-1333 ◽

Cited By ~ 30

Author(s):

Joana Bernardes de Assis ◽

Patrik Peyer ◽

Milton C. Rush ◽

Marcello Zala ◽

Bruce A. McDonald ◽

...

Keyword(s):

Rhizoctonia Solani ◽

Anastomosis Group ◽

Sheath Blight ◽

Host Specialization ◽

Rice Sheath Blight ◽

Sympatric Populations ◽

Migration Patterns ◽

Hardy Weinberg Equilibrium ◽

Internal Transcribed Spacer Rdna ◽

Group 1

Rhizoctonia solani anastomosis group (AG)-1 IA causes soybean foliar blighting (aerial blight) and rice sheath blight diseases. Although taxonomically related within the AG-1 complex, sister populations of R. solani AG-1 IA infecting Poaceae (rice) and Fabaceae (soybean) are genetically distinct based on internal transcribed spacer rDNA. However, there is currently no information available regarding the extent of genetic differentiation and host specialization between rice- and soybean-infecting populations of R. solani AG-1 IA. We used 10 microsatellite loci to compare sympatric R. solani AG-1 IA populations infecting rice and soybeans in Louisiana and one allopatric rice-infecting population from Texas. None of the 154 multilocus genotypes found among the 223 isolates were shared among the three populations. Partitioning of genetic diversity showed significant differentiation among sympatric populations from different host species (ΦST = 0.39 to 0.41). Historical migration patterns between sympatric rice- and soybean-infecting populations from Louisiana were asymmetrical. Rice- and soybean-derived isolates of R. solani AG-1 IA were able to infect both rice and soybean, but were significantly more aggressive on their host of origin, consistent with host specialization. The soybean-infecting population from Louisiana was more clonal than the sympatric rice-infecting population. Most of the loci in the soybean-infecting populations were out of Hardy-Weinberg equilibrium (HWE), but the sympatric rice-infecting population from Louisiana was mainly in HWE. All populations presented evidence for a mixed reproductive system.

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