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Genetic diversity of Colletotrichum lupini and its virulence on white lupin (Lupinus albus)

Alkemade, Joris; Messmer, Monika; Vögele, Ralf T.; Finckh, Maria R. and Hohmann, Pierre (2020) Genetic diversity of Colletotrichum lupini and its virulence on white lupin (Lupinus albus). Speech at: 15th European Conference on Fungal Genetics, Rome, 17. - 20. february 2020.

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Summary

White lupin (Lupinus albus) is a grain legume known for its high protein content and quality, efficient nutrient acquisition and health benefits 1, 2. Its high yield potential could make it a sustainable alternative to soybean in cooler regions 3. However, since the 1980s anthracnose disease, caused by the air- and seed-borne fungal disease Colletotrichum lupini, threatens lupin cultivations worldwide 4-6. Even low levels of seed infestation can lead up to total yield loss7, 8. To assist white lupin breeding programs, we analyzed the genetic diversity of globally collected lupin-infecting Colletotrichum isolates by multi-locus sequencing 9, 10. First analyses indicate that all isolates belong to the species C. lupini and that the genetic diversity of isolates collected from Europe and Australia is lower compared with isolates collected from South America. An indoor screening assay was developed and validated by field performance, allowing to determine differences in virulence between C. lupini strains under controlled conditions. Currently, virulence tests of selected C. lupini isolates are being performed on two white lupin cultivars, the susceptible variety Feodora and the tolerant breeding line Blu-25 from Erik von Baer. Our study will shed light on the genetic makeup of the species C. lupini and its relation to virulence on white lupin, thereby providing valuable information to improve white lupin breeding programs.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Speech
Keywords:White lupin, fungi, Abacus, FiBL20064.3, FiBL20040
Subjects: Crop husbandry > Breeding, genetics and propagation
Crop husbandry > Crop health, quality, protection
Research affiliation: European Union > Horizon 2020 > Diversifood
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Crop protection
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Seeds and breeding > Plant breeding
H2020 or FP7 Grant Agreement Number:727230
Deposited By: Alkemade, MSc Joris
ID Code:37909
Deposited On:20 Apr 2020 08:35
Last Modified:16 Feb 2021 14:44
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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