Effectiveness of Adult-Plant Resistance in Reducing Grain Yield Loss to Powdery Mildew in Winter Wheat

Griffey, Carl A.; Das, Mita; Stromberg, Erik L.

doi:10.1094/pd-77-0618

Cited by 107 publications

(51 citation statements)

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“…Heavily infected seedlings gradually become yellow and dry, significantly affecting the efficiency of photosynthesis. The disease can usually lead to a 13% to 34% loss of yield, but loss can be as severe as 50% when the flag leaf becomes severely diseased during the heading and filling stages (4). To date, there have been 59 powdery mildew resistance alleles identified and designated at 43 loci (5), among which only the Pm3b and its alleles have been cloned (6,7).…”

mentioning

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.

285

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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mentioning

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.

285

217

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“…In many host-pathogen systems, the assessment of crop damage is done using comparisons with a fungicide-protected control [36,37]. Trials often include artificial inoculation of the pathogen to ensure high and uniform disease pressure.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Incidence of Cephalosporium Stripe and Yield Loss in Winter Wheat

Quincke

Peterson

Mundt

2012

International Journal of Agronomy

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Cephalosporium stripe (caused by Cephalosporium gramineum) can be a serious disease of winter wheat (Triticum aestivum L.) in the Pacific Northwest of the USA. Effects of Cephalosporium stripe on yield, test weight, protein, and kernel characteristics were examined using 12 winter wheat varieties in field plots inoculated and not inoculated with the pathogen. Averaged over varieties, inoculation decreased yield, test weight, kernel weight, and kernel diameter; grain protein and the standard deviations of kernel weight and kernel diameter were increased by inoculation. Grain yield of the susceptible check was reduced by as much as 41% with addition of inoculum. The most resistant and the most susceptible varieties performed similarly for yield in the two environments, while varieties with intermediate levels of resistance were sometimes inconsistent. There was a linear relationship between yield and % whiteheads (sterile heads caused by disease) in one environment and a curvilinear relation in the other.

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“…tritici (Bgt), is a severe and globally significant disease of common wheat, with an occurrence of about 54 % in crops worldwide during 2001-2010(Morgounov et al 2012. Yield losses caused by the disease range from 13 to 34 %, but if the disease is severe losses can exceed 50 % (Griffey et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Localization of the powdery mildew resistance gene Pm07J126 in wheat (Triticum aestivum L.)

Long

Deng

et al. 2015

Euphytica

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Powdery mildew (Pm), caused by Blumeria graminis f. sp. tritici (Bgt), is one of the most serious diseases of common wheat (Triticum aestivum L.) in many regions of the world. Rapid loss of resistance caused by pathogen virulence requires continual improvement of Pm resistance through utilization of novel resistance genes. Pm07J126, in wheat line 07jian126, is a dominant resistance gene, conferring immunity to the prevailing Bgt population in Sichuan province. Previous studies showed that Pm07J126 might be derived from rye (Secale cereale L.) and that it was closely linked with SSR marker barc183. In this study, we localized Pm07J126 to the distal end of chromosome 6DS based on markers barc183 and cfd135. Collinearity analysis of wheat, Brachypodium and rice helped to identify an sequence tagged site marker in close proximity to barc183 in chromosome bin 6DS6-0.99-1.00. Marker Xcib9 that co-segregated with Pm07J126 should be useful for marker-assisted selection in wheat breeding programs.

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Effectiveness of Adult-Plant Resistance in Reducing Grain Yield Loss to Powdery Mildew in Winter Wheat

Cited by 107 publications

References 0 publications

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

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

Relationship between Incidence of Cephalosporium Stripe and Yield Loss in Winter Wheat

Localization of the powdery mildew resistance gene Pm07J126 in wheat (Triticum aestivum L.)

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