Inheritance of resistance to Karnal bunt (<i>Tilletia indica</i> Mitra) in bread wheat (<i>Triticum aestivum</i> L.)

Fuentes-Dávila, Guillermo; Rajaram, S.; Singh, Gurdev

doi:10.1111/j.1439-0523.1995.tb00804.x

Cited by 28 publications

(28 citation statements)

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“…The distribution of KB disease severity on the RILs was skewed toward that of the resistant-parent in three experiments, suggesting the segregation of multiple genes with dominant or complementary gene action in wheat line HD29. This is consistent with the results of previous studies (Morgunov et al 1994;Fuentes-Dávila et al 1995). The heritability of 0.69 on entry mean basis for KB resistance in this population is consistent with other findings showing that resistance to KB in wheat is highly heritable and under relatively simple genetic control Nelson et al 1998).…”

Section: Discussionsupporting

confidence: 82%

“…Most sources of genetic resistance to KB traced to China, India and Brazil (Gill et al 1993;Fuentes-Dávila et al 1995;Singh et al 1995b). Wheat line HD29 is potentially an important source of genetic resistance to KB providing resistance to diverse isolates of T. indica (Gill et al 1993).…”

Section: Discussionmentioning

confidence: 99%

“…Previous genetic studies on KB resistance in wheat indicated that one to six major genes condition resistance in various wheat germplasms (Morgunov et al 1994;Fuentes-Dávila et al 1995;Singh et al 1995aSingh et al , b, 1999Villareal et al 1995). Six wheat chromosomes (1D, 2A, 3B, 3D, 5D and 7A) were identified as influencing reaction to the pathogen (Gill et al1993;Singh et al 1994).…”

Section: Introductionmentioning

confidence: 99%

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Mapping of a resistance gene effective against Karnal bunt pathogen of wheat

et al. 2003

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A set of 130 wheat recombinant inbred lines (RILs) developed from a cross between parents susceptible (WL711) and resistant (HD29) to Karnal bunt (caused by Tilletia indica), were screened for 3 years with the pathogen populations prevalent in northern India. When 90 simple sequence repeats (SSRs) and 81 amplified fragment length polymorphism (AFLP) loci were mapped on the RILs, markers on chromosomes 2A, 4B and 7B accounted collectively for about one-third of the variation in the disease reaction. The genomic region of largest effect, identified on the long arm of chromosome 4B, reduced Karnal bunt disease by half in three different experiments and accounted for up to 25% of the phenotypic variation for KB reaction. A closely linked SSR marker, GWM538, may be useful in marker-assisted selection for Karnal bunt resistance in wheat.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mapping of a resistance gene effective against Karnal bunt pathogen of wheat

et al. 2003

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“…The distribution of KB disease severity on the RILs was skewed towards that of the resistant parent, suggesting the segregation of multiple genes with dominant or complementary gene action in wheat line HD 29. The inheritance of KB resistance has also been reported to be controlled by two recessive genes (Singh et al 1993, Fuentes-Davila et al 1995. Identification of RILs with lower and higher disease incidence than HD 29 and WH 542, respectively, suggests that WH 542 probably has minor genes for KB resistance.…”

Section: [%]mentioning

confidence: 95%

Identification of RAPD markers linked to the karnal bunt resistance genes in wheat

Kumar¹,

Luthra²,

Chawla³

et al. 2006

Biol. plant.

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A set of 104 wheat recombinant inbred lines (RILs) obtained from a cross between parents resistant (HD 29) and susceptible (WH 542) to karnal bunt (KB) (caused by Neovossia indica) were screened and used to identify random amplified polymorphic DNA (RAPD) markers linked with resistance to karnal bunt as these would allow indirect marker assisted selection of KB resistant genotypes. The two parents were analysed with 92 RAPD primers. A total of 65 primers proved functional by giving scorable polymerase chain reaction (PCR) products. Of these, 21 (32 %) primers detected polymorphism between the two parental genotypes. Using these primers, bulked segregant analysis was carried out on two bulk DNAs, one obtained by pooling DNA from 10 KB resistant RILs and the other similarly derived by pooling 10 KB susceptible RILs. One marker, OPM-20 showed apparent association with resistance to KB. This was confirmed following selective genotyping of individual RILs included in the bulks.Additional key words: Neovossia indica, PCR, recombinant inbred lines, Triticum aestivum.

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“…The CIMMYT and the National Institute for Forestry, Agriculture and Livestock Research (INIFAP), Mexico has created artificial inoculated field screening facility at the Norman E. Borlaug Experiment Station (CENEB), Obregon, Mexico, where the disease was accidently introduced and is already established. The early extensive wheat germplasm screening efforts could identify wheat lines from India, China, Brazil and the synthetic hybrid wheats (SHWs) as four major sources of KB resistance ( Fuentes-Dávila et al, 1995 ). At present, CIMMYT is having an inventory of high yielding lines and advanced breeding lines with a good degree of KB resistance and the KB resistant material is shared on request.…”

Section: Steps Toward Development Of Kb-resistant Germplasmmentioning

confidence: 99%

Karnal Bunt: A Re-Emerging Old Foe of Wheat

Bishnoi

Phuke³

et al. 2020

Front. Plant Sci.

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Wheat ( Triticum aestivum L.) crop health assumes unprecedented significance in being the second most important staple crop of the world. It is host to an array of fungal pathogens attacking the plant at different developmental stages and accrues various degrees of yield losses owing to these. Tilletia indica that causes Karnal bunt (KB) disease in wheat is one such fungal pathogen of high quarantine importance restricting the free global trade of wheat besides the loss of grain yield as well as quality. With global climate change, the disease appears to be shifting from its traditional areas of occurrence with reports of increased vulnerabilities of new areas across the continents. This KB vulnerability of new geographies is of serious concern because once established, the disease is extremely difficult to eradicate and no known instance of its complete eradication using any management strategy has been reported yet. The host resistance to KB is the most successful as well as preferred strategy for its mitigation and control. However, breeding of KB resistant wheat cultivars has proven to be not so easy, and the low success rate owes to the scarcity of resistance sources, extremely laborious and regulated field screening protocols delaying identification/validation of putative resistance sources, and complex quantitative nature of resistance with multiple genes conferring only partial resistance. Moreover, given a lack of comprehensive understanding of the KB disease epidemiology, host-pathogen interaction, and pathogen evolution. Here, in this review, we attempt to summarize the progress made and efforts underway toward a holistic understanding of the disease itself with a specific focus on the host-pathogen interaction between T. indica and wheat as key elements in the development of resistant germplasm. In this context, we emphasize the tools and techniques being utilized in development of KB resistant germplasm by illuminating upon the genetics concerning the host responses to the KB pathogen including a future course. As such, this article could act as a one stop information primer on this economically important and re-emerging old foe threatening to cause devastating impacts on food security and well-being of communities that rely on wheat.

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Inheritance of resistance to Karnal bunt (Tilletia indica Mitra) in bread wheat (Triticum aestivum L.)

Abstract: The mode of inheritance and allelic relationships among genes conferring resistance to Karnal bunt were studied in seven bread-wheat

Cited by 28 publications

References 0 publications

Mapping of a resistance gene effective against Karnal bunt pathogen of wheat

Mapping of a resistance gene effective against Karnal bunt pathogen of wheat

Identification of RAPD markers linked to the karnal bunt resistance genes in wheat

Karnal Bunt: A Re-Emerging Old Foe of Wheat

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