scholarly journals Two Novel er1 Alleles Conferring Powdery Mildew (Erysiphe pisi) Resistance Identified in a Worldwide Collection of Pea (Pisum sativum L.) Germplasms

2019 ◽  
Vol 20 (20) ◽  
pp. 5071 ◽  
Author(s):  
Suli Sun ◽  
Dong Deng ◽  
Canxing Duan ◽  
Xuxiao Zong ◽  
Dongxu Xu ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Protein Sequence ◽  
Marker Assisted Selection ◽  
Functional Markers ◽  
Cdna Clones ◽  
Wild Type ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Novel Alleles ◽  
Splicing Patterns

Powdery mildew caused by Erysiphe pisi DC. severely affects pea crops worldwide. The use of resistant cultivars containing the er1 gene is the most effective way to control this disease. The objectives of this study were to reveal er1 alleles contained in 55 E. pisi-resistant pea germplasms and to develop the functional markers of novel alleles. Sequences of 10 homologous PsMLO1 cDNA clones from each germplasm accession were used to determine their er1 alleles. The frame shift mutations and various alternative splicing patterns were observed during transcription of the er1 gene. Two novel er1 alleles, er1-8 and er1-9, were discovered in the germplasm accessions G0004839 and G0004400, respectively, and four known er1 alleles were identified in 53 other accessions. One mutation in G0004839 was characterized by a 3-bp (GTG) deletion of the wild-type PsMLO1 cDNA, resulting in a missing valine at position 447 of the PsMLO1 protein sequence. Another mutation in G0004400 was caused by a 1-bp (T) deletion of the wild-type PsMLO1 cDNA sequence, resulting in a serine to leucine change of the PsMLO1 protein sequence. The er1-8 and er1-9 alleles were verified using resistance inheritance analysis and genetic mapping with respectively derived F2 and F2:3 populations. Finally, co-dominant functional markers specific to er1-8 and er1-9 were developed and validated in populations and pea germplasms. These results improve our understanding of E. pisi resistance in pea germplasms worldwide and provide powerful tools for marker-assisted selection in pea breeding.

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.

AAC Ardill field pea

2014 ◽  
Vol 94 (1) ◽  
pp. 191-192
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debra McLaren ◽  
Cecil Vera ◽  
David Gehl
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Field Pea ◽  
Research Centre ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Pisum Sativum L

Bing, D.-J., Beauchesne, D., McLaren, D., Vera, C. and Gehl, D. 2014. AAC Ardill field pea. Can. J. Plant Sci. 94: 191–192. AAC Ardill is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding cultivar with excellent standability. AAC Ardill is resistant to powdery mildew caused by Erysiphe pisi Syd. It has medium maturity and is adapted to all field pea growing regions in western Canada.

POWDERY MILDEW OF VICIA FABA IN MANITOBA

1977 ◽  
Vol 57 (3) ◽  
pp. 745-749 ◽  
Author(s):  
P. D. KHARBANDA ◽  
C. C. BERNIER
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Vicia Faba ◽  
Morphological Characters ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Leaf Surfaces ◽  
Vicia Faba L ◽  
Faba Beans ◽  
New Hosts

Powdery mildew occurred widely on faba beans (Vicia faba L.) in Manitoba in 1974. Mycelia, and conidia were abundant on both leaf surfaces. The fungus later developed numerous cleistothecia 99–143 μm in diam, with rigid appendages, 128–286 μm in length, dichotomously branched at their apices and ending in recurved tips. Frequently, appendages were contorted and irregularly branched. Cleistothecia contained 5–8 asci. The fungus produced mildew symptoms on Lathyrus ochroleucus Hook., L. odoratus L., L. latifolius L., and Vicia americana Muhl., but failed to infect Lonicera tatarica L., Pisum sativum L., and Syringa vulgaris L. The fungus was identified as Microsphaera penicillata (Wall. ex Fr.) Lév. var. ludens (Salmon) Cooke on the basis of morphological characters and pathogenicity. Lathyrus spp. are new hosts of the fungus. L. ochroleucus and V. americana may be sources of primary inoculum of the fungus in Manitoba. Erysiphe pisi DC. reported to occur on V. faba was not found on any of the specimens.

AAC Delhi field pea

2021 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne
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 Delhi is a semi-leafless, large-seeded yellow 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, medium maturity and good lodging resistance. AAC Delhi has the maturity of 95 days, and one-thousand-seed weight of 288 g. AAC Delhi is resistant to powdery mildew (caused by Erysiphe pisi Syd.), and is moderately susceptible to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Delhi is adapted to all field growing regions in western Canada.

AAC Barrhead field pea

2015 ◽  
Vol 95 (6) ◽  
pp. 1277-1278
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Debbie McLaren ◽  
Cecil Vera
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Field Pea ◽  
Research Centre ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Pisum Sativum L

Bing, D.-J., Beauchesne, D., McLaren, D. and Vera, C. 2015. AAC Barrhead field pea. Can. J. Plant Sci. 95: 1277–1278. AAC Barrhead is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada (AAFC) Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding cultivar with excellent standability. AAC Barrhead is resistant to powdery mildew caused by Erysiphe pisi Syd. It has medium maturity and is adapted to all field growing regions in western Canada.

Earlystar field pea

2011 ◽  
Vol 91 (6) ◽  
pp. 1115-1116
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Al Sloan ◽  
Debbie McLaren ◽  
Cecil Vera
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Field Pea ◽  
Research Centre ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Early Maturing

Bing, D. J., Beauchesne, D., Sloan, A., McLaren, D. and Vera, C. 2011. Earlystar field pea. Can. J. Plant Sci. 91: 1115–1116. Earlystar is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding and early-maturing cultivar and is resistant to powdery mildew caused by Erysiphe pisi Syd. Earlystar is adapted to all field growing regions in western Canada.

Identification of a complete set of functional markers for the selection of er1 powdery mildew resistance in Pisum sativum L.

2012 ◽  
Vol 31 (1) ◽  
pp. 247-253 ◽  
Author(s):  
Stefano Pavan ◽  
Adalgisa Schiavulli ◽  
Michela Appiano ◽  
Cecilia Miacola ◽  
Richard G. F. Visser ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Powdery Mildew Resistance ◽  
Functional Markers ◽  
Mildew Resistance ◽  
Pisum Sativum L ◽  
Complete Set ◽  
Selection Of

Fungicidal control of powdery mildew in field pea

1996 ◽  
Vol 76 (4) ◽  
pp. 933-935 ◽  
Author(s):  
T. D. Warkentin ◽  
K. Y. Rashid ◽  
A. G. Xue
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Yield ◽  
Seed Weight ◽  
Field Trials ◽  
Field Pea ◽  
Susceptible Cultivar ◽  
Erysiphe Pisi ◽  
Pisum Sativum L ◽  
Disease Pressure

The efficacy of sulfur (Kumulus S) and myclobutanil (Nova 40W) fungicides for control of powdery mildew (Erysiphe pisi Syd) in field pea (Pisum sativum L.) was investigated in field trials at two locations in Manitoba in 1994 and 1995. Both fungicides were effective in reducing disease seventy and increasing seed yield and seed weight of the susceptible cultivar Radley. Fungicide treatments were economically beneficial when disease pressure was high. Key words: Field pea, Pisum sativum L., powdery mildew, Erysiphe pisi Syd., sulfur, myclobutanil

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