Molecular mapping of powdery mildew resistance genes in wheat: A review

Huang, Xiaodong; Röder, Marion S.

doi:10.1023/b:euph.0000041576.74566.d7

Cited by 162 publications

(93 citation statements)

References 143 publications

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“…Powdery mildew of cereals is caused by formae speciales of Blumeria graminis; wheat powdery mildew, caused by f. sp. tritici, is a disease of major economic significance globally (Huang and Röder, 2004). Several brachypodium ecotypes have been assessed for infection by Blumeria graminis f. sp.…”

Section: Biotrophic Fungal Pathogensmentioning

confidence: 99%

Brachypodium as an emerging model for cereal–pathogen interactions

et al. 2015

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Background Cereal diseases cause tens of billions of dollars of losses annually and have devastating humanitarian consequences in the developing world. Increased understanding of the molecular basis of cereal host-pathogen interactions should facilitate development of novel resistance strategies. However, achieving this in most cereals can be challenging due to large and complex genomes, long generation times and large plant size, as well as quarantine and intellectual property issues that may constrain the development and use of community resources. Brachypodium distachyon (brachypodium) with its small, diploid and sequenced genome, short generation time, high transformability and rapidly expanding community resources is emerging as a tractable cereal model.Scope Recent research reviewed here has demonstrated that brachypodium is either susceptible or partially susceptible to many of the major cereal pathogens. Thus, the study of brachypodium-pathogen interactions appears to hold great potential to improve understanding of cereal disease resistance, and to guide approaches to enhance this resistance. This paper reviews brachypodium experimental pathosystems for the study of fungal, bacterial and viral cereal pathogens; the current status of the use of brachypodium for functional analysis of cereal disease resistance; and comparative genomic approaches undertaken using brachypodium to assist characterization of cereal resistance genes. Additionally, it explores future prospects for brachypodium as a model to study cereal-pathogen interactions.Conclusions The study of brachypodium-pathogen interactions appears to be a productive strategy for understanding mechanisms of disease resistance in cereal species. Knowledge obtained from this model interaction has strong potential to be exploited for crop improvement.

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Section: Biotrophic Fungal Pathogensmentioning

confidence: 99%

Brachypodium as an emerging model for cereal–pathogen interactions

et al. 2015

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“…It is the staple crop for about 35% of the human population (Huang and R oder 2004). Powdery mildew (Pm), caused by Blumeria graminis f. sp.…”

Section: Introductionmentioning

confidence: 99%

Molecular detection of rye (Secale cereale L.) chromatin in wheat line 07jian126 (Triticum aestivum L.) and its association to wheat powdery mildew resistance

Long

Yang

et al. 2012

Euphytica

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“…W heat is the most widely grown food crop in the world and ranks first in world crop production. It is the national staple food of 43 countries and feeds at least one third of the world's population (1). Currently, China is the biggest wheat producer and consumer in the world (2).…”

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confidence: 99%

Serine/threonine kinase gene Stpk-V , a key member of powdery mildew resistance gene Pm21 , confers powdery mildew resistance in wheat

Cao

Xing

Wang

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

276

217

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Powdery mildew resistance gene Pm21, located on the chromosome 6V short arm of Haynaldia villosa and transferred to wheat as a 6VS·6AL translocation (T6VS·6AL), confers durable and broadspectrum resistance to wheat powdery mildew. Pm21 has become a key gene resource for powdery mildew resistance breeding all over the world. In China, 12 wheat varieties containing Pm21 have been planted on more than 3.4 million hectares since 2002. Pm21 has been intractable to molecular genetic mapping because the 6VS does not pair and recombine with the 6AS. Moreover, all known accessions of H. villosa are immune to powdery mildew fungus. Pm21 is still defined by cytogenetics as a locus. In the present study, a putative serine and threonine protein kinase gene Stpk-V was cloned and characterized with an integrative strategy of molecular and cytogenetic techniques. Stpk-V is located on the Pm21 locus. The results of a single cell transient expression assay showed that Stpk-V could decrease the haustorium index dramatically. After the Stpk-V was transformed into a susceptible wheat variety Yangmai158, the characterized transgenic plants showed high and broad-spectrum powdery mildew resistance similar to T6VS·6AL. Silencing of the Stpk-V by virus-induced gene silencing in both T6VS·6AL and H. villosa resulted in their increased susceptibility. Stpk-V could be induced by Bgt and exogenous H 2 O 2 , but it also mediated the increase of endogenous H 2 O 2 , leading to cell death and plant resistance when the plant was attacked by Bgt.

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Molecular mapping of powdery mildew resistance genes in wheat: A review

Cited by 162 publications

References 143 publications

Brachypodium as an emerging model for cereal–pathogen interactions

Brachypodium as an emerging model for cereal–pathogen interactions

Molecular detection of rye (Secale cereale L.) chromatin in wheat line 07jian126 (Triticum aestivum L.) and its association to wheat powdery mildew resistance

Serine/threonine kinase gene Stpk-V , a key member of powdery mildew resistance gene Pm21 , confers powdery mildew resistance in wheat

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