INTROGRESSION OF A POLYGENIC RESISTANCE TO POWDERY MILDEW FROM A WILD SPECIES PRUNUS DAVIDIANA INTO PEACH (PRUNUS PERSICA (L.) BATSCH), A CASE STUDY OF MARKER ASSISTED SELECTION IN FRUIT TREE

Viruses are microbes that have high economic impacts on the ecosystem. Widely spread by humans, plant viruses infect not only crops but also wild species. There is neither a cure nor a treatment against viruses. While chemists have developed further research of inefficient curative products, the relevant concept based on sanitary measures is consistently valuable. In this context, two major strategies remain indisputable. First, there are control measures via diagnostics presently addressing the valuable technologies and tools developed in the last four decades. Second, there is the relevant use of modern biotechnology to improve the competitiveness of fruit-tree growers.

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Temporal niche differentiation of parasites sharing the same plant host: oak powdery mildew as a case study

Ecosphere ◽

10.1002/ecs2.1517 ◽

2016 ◽

Vol 7 (11) ◽

Cited By ~ 15

Author(s):

Frédéric M. Hamelin ◽

Anne Bisson ◽

Marie‐Laure Desprez‐Loustau ◽

Frédéric Fabre ◽

Ludovic Mailleret

Keyword(s):

Powdery Mildew ◽

Niche Differentiation ◽

Plant Host ◽

Temporal Niche ◽

Temporal Niche Differentiation

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Podosphaera leucotricha. [Descriptions of Fungi and Bacteria].

IMI Descriptions of Fungi and Bacteria ◽

10.1079/dfb/20056400158 ◽

1967 ◽

Author(s):

J. N. Kapoor

Keyword(s):

South Africa ◽

New Zealand ◽

North America ◽

Powdery Mildew ◽

South America ◽

Geographical Distribution ◽

Prunus Persica ◽

Podosphaera Leucotricha

Abstract A description is provided for Podosphaera leucotricha. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Malus spp., chiefly on M. pumila (apple), peach (Prunus persica), quince (Cydonia ualgaris) and Photinia spp. also attacked (Hirata, 1966). Also reported on almond fruit (43, 2544). DISEASE: Powdery mildew of apple. GEOGRAPHICAL DISTRIBUTION: Africa (? Kenya, Rhodaia, South Africa, Tanzania); Asia (China, India, Israel, Japan, U.S.S.R.); Australia and New Zealand, Europe (widely distributed) North America (Canada and U.S.A.); South America (Argentina, Brazil, Chile, Colombia, Peru). (CMI map 118). TRANSMISSION: Overwinters on host as dormant mycdium in blossom buds. The role of deistothecia in overwintering is doubtful. Spread by wind-borne conidia (Anderson, 1956).

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Tomato defense to the powdery mildew fungus: differences in expression of genes in susceptible, monogenic- and polygenic resistance responses are mainly in timing

Plant Molecular Biology ◽

10.1007/s11103-006-9008-z ◽

2006 ◽

Vol 62 (1-2) ◽

pp. 127-140 ◽

Cited By ~ 32

Author(s):

Chengwei Li ◽

Yuling Bai ◽

Evert Jacobsen ◽

Richard Visser ◽

Pim Lindhout ◽

...

Keyword(s):

Powdery Mildew ◽

Polygenic Resistance ◽

Powdery Mildew Fungus ◽

Expression Of Genes

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Characterization of the Powdery Mildew Resistance Gene in Wheat Breeding Line KN0816 and its Evaluation in Marker-Assisted Selection

Plant Disease ◽

10.1094/pdis-05-21-0896-re ◽

2021 ◽

Author(s):

Wenrui Wang ◽

Huagang He ◽

Huiming Gao ◽

Hongxing Xu ◽

Wenyue Song ◽

...

Keyword(s):

Powdery Mildew ◽

Resistance Gene ◽

Marker Assisted Selection ◽

Powdery Mildew Resistance ◽

Wheat Breeding ◽

Agronomic Performance ◽

Breeding Line ◽

Powdery Mildew Resistance Gene ◽

Mildew Resistance

Wheat powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is a destructive disease seriously threatening yield and quality of common wheat (Triticum aestivum L., 2n=6x=42, AABBDD). Characterization of resistance genes against powdery mildew is useful in parental selection and for developing disease resistant cultivars. Chinese wheat breeding line KN0816 has superior agronomic performance and resistance to powdery mildew at all growth stages. Genetic analysis using populations of KN0816 crossed with different susceptible parents indicated that a single dominant gene, tentatively designated PmKN0816, conferred seedling resistance to different Bgt isolates. Using a bulked segregant analysis (BSA), PmKN0816 was mapped to the Pm6 interval on chromosome arm 2BL using polymorphic markers linked to the catalogued genes Pm6, Pm52, and Pm64, and flanked by markers CISSR02g-6 and CIT02g-2 both with genetic distances of 0.7 cM. Analysis of closely linked molecular markers indicated that the marker alleles of PmKN0816 differed from those of other powdery mildew resistance genes on 2BL, including Pm6, Pm33, Pm51, Pm64, and PmQ. Based on the genetic and physical locations and response pattern to different Bgt isolates, PmKN0816 is most likely a new powdery mildew resistance gene and confers effective resistance to all the 14 tested Bgt isolates. In view of the elite agronomic performance of KN0816 combined with the resistance, PmKN0816 is expected to become a valuable resistance gene in wheat breeding. To transfer PmKN0816 to different genetic backgrounds using marker-assisted selection (MAS), closely linked markers of PmKN0816 were evaluated and four of them (CIT02g-2, CISSR02g-6, CIT02g-10, and CIT02g-17) were confirmed to be applicable for MAS in different genetic backgrounds.

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