Resistance reaction to powdery mildew (Erysiphe pisi) in a germplasm collection of Lathyrus cicera from Iberian origin

2007 ◽  
Vol 54 (7) ◽  
pp. 1517-1521 ◽  
Author(s):  
M. C. Vaz Patto ◽  
M. Fernández-Aparicio ◽  
A. Moral ◽  
D. Rubiales
Keyword(s):  
Powdery Mildew ◽  
Germplasm Collection ◽  
Erysiphe Pisi ◽  
Lathyrus Cicera ◽  
Resistance Reaction

Characterization of resistance to powdery mildew (Erysiphe pisi) in a germplasm collection of Lathyrus sativus

2006 ◽  
Vol 125 (3) ◽  
pp. 308-310 ◽  
Author(s):  
M. C. Vaz Patto ◽  
M. Fernandez-Aparicio ◽  
A. Moral ◽  
D. Rubiales
Keyword(s):  
Powdery Mildew ◽  
Germplasm Collection ◽  
Lathyrus Sativus ◽  
Erysiphe Pisi

scholarly journals Partial Resistance Against Erysiphe pisi and E. trifolii Under Different Genetic Control in Lathyrus cicera: Outcomes from a Linkage Mapping Approach

Plant Disease ◽  
2020 ◽  
Vol 104 (11) ◽  
pp. 2875-2884 ◽  
Author(s):  
Carmen Santos ◽  
Davide Martins ◽  
Diego Rubiales ◽  
Maria Carlota Vaz Patto
Keyword(s):  
Powdery Mildew ◽  
Linkage Map ◽  
Genetic Control ◽  
Recombinant Inbred Line Population ◽  
Recombinant Inbred ◽  
Partial Resistance ◽  
Resistance Mechanisms ◽  
Erysiphe Pisi ◽  
Powdery Mildews ◽  
Lathyrus Cicera

Powdery mildew infections are among the most severe foliar biotrophic fungal diseases in grain legumes. Several accessions of Lathyrus cicera (chickling pea) show levels of partial resistance to Erysiphe pisi, the causal agent of pea powdery mildew, and to E. trifolii, a powdery mildew pathogen recently confirmed to infect pea and Lathyrus spp. Nevertheless, the underlying L. cicera resistance mechanisms against powdery mildews are poorly understood. To unveil the genetic control of resistance against powdery mildews in L. cicera, a recombinant inbred line population segregating for response to both species was used in resistance linkage analysis. An improved L. cicera genetic linkage map was used in this analysis. The new higher-density linkage map contains 1,468 polymorphic loci mapped on seven major and two minor linkage groups, covering a total of 712.4 cM. The percentage of the leaf area affected by either E. pisi or E. trifolii was recorded in independent screenings of the recombinant inbred line population, identifying a continuous range of resistance-susceptibility responses. Distinct quantitative trait loci (QTLs) for partial resistance against each pathogen were identified, suggesting different genetic bases are involved in the response to E. pisi and E. trifolii in L. cicera. Moreover, through comparative mapping of L. cicera QTL regions with the pea reference genome, candidate genes and pathways involved in resistance against powdery mildews were identified. This study extended the previously available genetic and genomic tools in Lathyrus species, providing clues about diverse powdery mildew resistance mechanisms useful for future resistance breeding of L. cicera and related species.

Erysiphe pisi. [Descriptions of Fungi and Bacteria].

1967 ◽  
Author(s):  
J. N. Kapoor
Keyword(s):  
Powdery Mildew ◽  
Geographical Distribution ◽  
Lens Culinaris ◽  
World Wide ◽  
Erysiphe Pisi ◽  
Lens Esculenta

Abstract A description is provided for Erysiphe pisi. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Papilionaceae, chiefly on Pisum, Dorcynium, Medicago and Vicia; also on Lupinus spp., Lens esculenta[Lens culinaris], Trifolium dubium and? Astragalus alpinus (Blumer, 1967). DISEASE: Powdery mildew of pea. GEOGRAPHICAL DISTRIBUTION: World-wide. TRANSMISSION: Internally seed borne (15: 338).

Microsphaera penicillata. [Descriptions of Fungi and Bacteria].

1968 ◽  
Author(s):  
K. G. Mukerji
Keyword(s):  
North America ◽  
Powdery Mildew ◽  
Geographical Distribution ◽  
World Wide ◽  
Late Summer ◽  
Erysiphe Pisi ◽  
Temperature And Humidity ◽  
Young Leaves ◽  
Dry Seasons

Abstract A description is provided for Microsphaera penicillata. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On species of Alnus, Betula, Syringa, Lathyrus, sweet peas and numerous other hosts (Saknon, 1900; Stevens, 1925; 39: 739; 41: 175) DISEASES: Powdery mildew of alder and lilac. Forms a white to grey floury appearance on the surface of broad leaves of many hard wood trees. It is more prevalent on sweet peas than Erysiphe pisi (CMI Descript. 155) in North America in spring when temperature and humidity are fluctuating. The foliage may be malformed, dropping prematurely or drying out and shrivelling. It is also prevalent on lilac in late summer and autumn, sometimes in dry seasons almost completely covering the foliage, but generally too late in the season to cause serious damage. Young leaves are more susceptible. GEOGRAPHICAL DISTRIBUTION: World-wide on alder and lilac and occasionally occurring on numerous other hosts. Distributed generally in North America and Europe, also reported from Chile, China, India and Japan (Salmon, 1900, 39: 739; 41: 175). TRANSMISSION: Spores wind borne.

scholarly journals Response of Pisum sativum germplasm resistant to Erysiphe pisi to inoculation with Erysiphe baeumleri, a new pathogen of pea

2010 ◽  
Vol 41 (No. 3) ◽  
pp. 95-103 ◽  
Author(s):  
M. Ondřej ◽  
R. Dostálová ◽  
L. Odstrčilová
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Natural Infection ◽  
Erysiphe Pisi ◽  
Field Screening ◽  
Susceptible Control ◽  
High Level ◽  
Screening Trials

Cultivars, homozygous sources and lines of pea (<I>Pisum sativum</I> L.) resistant to <I>Erysiphe pisi</I> had recently been attacked by another powdery mildew species, <I>Erysiphe</I> <I>baeumleri,</I> in the field and in glasshouse conditions. Inoculation with <I>E. baeumleri</I> was carried out in the glasshouse to evaluate the level of resistance of 16 pea genotypes. Susceptible pea lines produced abundant conidia and cleistocarps on petioles and leaves. Only the genotype Tudor (Cebeco 4119) was found to be completely resistant to <I>E. baeumleri</I>. Nineteen pea genotypes (with gene <I>er-1</I>) were tested to natural infection by <I>E. baeumleri</I> in field screening trials. Only few of them demonstrated a high level of resistance (Fallon, AC Melfort and Joel). Consort R, SGL 2024, SGL 1977 and Franklin were very susceptible to <I>E. baeumleri</I>. Cleistocarps with 1–4× dichotomously branching apices of appendages were formed only on susceptible and very susceptible plants of genotypes SGL 444/2185, Consort R, SGL 2024, SGL 1977, LU 390-R2, Lifter, Highlight, Cebeco 1171 and Carneval R in the field and glasshouse. Susceptible control genotypes without gene <I>er-1</I> (Komet, Adept and Gotik) were attacked in the trials by <I>E.&nbsp;pisi</I> only.

Identifying Resistance to Powdery Mildew Race 2W in the USDA-ARS Watermelon Germplasm Collection

Crop Science ◽  
2010 ◽  
Vol 50 (3) ◽  
pp. 933-939 ◽  
Author(s):  
Antonia Y. Tetteh ◽  
Todd C. Wehner ◽  
Angela R. Davis
Keyword(s):  
Powdery Mildew ◽  
Germplasm Collection

AAC Asher field pea

2020 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne ◽  
Debra L. McLaren ◽  
Richard Cuthbert ◽  
Hamid Naeem
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Asher is a semi-leafless, medium to large seeded yellow cotyledon field pea (Pisum sativum L.) variety developed at Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has high yielding potential, early to medium maturity and good lodging resistance. AAC Asher has maturity of 94 days, and one-thousand-seed weight of 257 g. AAC Asher is resistant to powdery mildew (caused by Erysiphe pisi Syd.), moderately tolerant to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Asher is adapted to all field growing regions in western Canada.

AAC Olive marrowfat pea

2019 ◽  
Vol 99 (5) ◽  
pp. 780-782
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debra McLaren ◽  
Yantai Gan ◽  
Parthiba Balasubramanian ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Research And Development ◽  
Seed Weight ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Development Centre ◽  
Green Cotyledon ◽  
Thousand Seed Weight

AAC Olive is a semi-leafless, green cotyledon, and high-yielding marrowfat pea (Pisum sativum L.) variety developed at the Lacombe Research and Development Centre, Agriculture and Agri-Food Canada. It has a maturity of 102 d, average thousand-seed weight of 344 g, and is resistant to powdery mildew (caused by Erysiphe pisi). AAC Olive was certificated on 16 Apr. 2019 by the Canadian Seed Growers Association under the authority of the Canada Seeds Act. The certificate number is 2165-2019.

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