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Title [sv]
Smarta lösningar för fruktodlare
Title [en]
Smart solutions for fruit growers
Abstract [sv]
Gråmögel anses vara en allvarlig svampsjukdom som ger röta i äpplen efter skörd. Projektet, som heter: "Engineering smart solutions for fruit growers" bygger vidare på resultaten av en 4-årig studie från Belgien, i vilken Ms Bui (projektledaren) upptäckte att äpplefrukters kvalitet (uppmätt som antioxidantinnehåll och resistens mot gråmögel) under lagring var ett resultat av hur äpplena odlats i fält: de mest motståndskraftiga äpplena erhölls då vädret var fuktigt och varmt före skörd. Projektet syftar till att bestämma effekten av väderparametrar på frukters kvalitet i flera svenska fruktodlingar med olika lokala klimat. I dessa odlingar finns väderstationer, varifrån data registreras kontinuerligt. Ägaren, Jordbruksverket, har gett Ms. Bui lov att gratis använda dessa data för sin forskning. Dessa kommer att användas för att utveckla algoritmer för fruktodlarna så att fruktkvaliteten kan förutspås, baserat på mikroklimatet i odlingen. Utvecklingen av dessa verktyg kommer att göra svenska fruktodlare mer konkurrenskraftiga. Ett litet företag (In Situ) och en medlemsförening för äppleodlare (Äppelriket) är intresserade av att delta i projektet. Forskargrupper vid K.U. Leuven i Belgien tar hand om dataanalysen, och In Situ kommer att förse Ms. Bui med tekniska kunskaper om väderstationer. In Situ förhandlar med Jordbruksverket om installering av nya väderstationer. Ms. Bui kommer att koordinera projektet, fylla odlarnas kunskapsluckor om väderstationer, och att förmedla kunskaper som hon fått i Belgien. Hon kommer att testa äpplen från fruktodlingarna för motståndskraft mot gråmögel, vid skörd och vid två tidpunkter efter lagring. Projektet kommer att leda till att Ms. Bui får ut sin doktorsexamen i biologi.
Abstract [en]
Grey mould, caused by the fungus Botrytis cinerea is considered a serious pre- and post-harvest disease in apple. The project, "Engineering smart solutions for fruit growers" will build on the results of a 4-year Belgian study, in which Ms Bui (the Project Leader) discovered that apple fruit quality (antioxidant status and resistance to grey mould) during postharvest was a result of the way the apples had been cultivated: the best apples were obtained when a wet and warm period preceded harvest. The proposed project aims to test the effect of weather parameters (rain, temperature, etc.) on the resulting apple fruit quality in several Swedish orchards with different local climates. These orchards have weather stations from which data is recorded continuously, and the owner, the Swedish Board of Agriculture, has granted Ms. Bui full data access. The data will be used to generate model to enable fruit growers to predict fruit quality, based on the climate in the orchard. The development of these tools will make Swedish fruit growers more competitive. A small Swedish enterprise (In Situ) and the growers´ cooperative (Äppelriket) are interested in participating in the project. Research groups at University of Gävle will be supportive in data analysis, and In Situ will provide Ms. Bui with technical knowledge of weather stations. In Situ is negotiating with the Board of Agriculture on substitution of weather stations. Ms. Bui will coordinate the project, serve to bridge the knowledge gap between apple growers and In Situ, and transfer the knowledge from Belgium to Sweden. She will test apples from the selected orchards for resistance to grey mould, at harvest and at two postharvest intervals. At the end of the project, Ms. Bui will have obtained her PhD degree.
Publications (1 of 1) Show all publications
Bui, T. T. A., Wright, S. A. I., Falk, A. B., Vanwalleghem, T., Van Hemelrijck, W., Hertog, M. L. .., . . . Davey, M. W. (2019). Botrytis cinerea differentially induces postharvest antioxidant responses in 'Braeburn' and 'Golden Delicious' apple fruit. Journal of the Science of Food and Agriculture, 99(13), 5662-5670
Open this publication in new window or tab >>Botrytis cinerea differentially induces postharvest antioxidant responses in 'Braeburn' and 'Golden Delicious' apple fruit
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2019 (English)In: Journal of the Science of Food and Agriculture, ISSN 0022-5142, E-ISSN 1097-0010, Vol. 99, no 13, p. 5662-5670Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The fruit of two apple cultivars - 'Braeburn', which is susceptible to inoculation with Botrytis cinerea, and the less susceptible cv. 'Golden Delicious' - were investigated with respect to their response to inoculation with B. cinerea. Successful infection by B. cinerea leads to an oxidative burst and perturbation of plant redox homeostasis. To investigate the interaction between apple fruit and B. cinerea, antioxidant metabolism in fruit samples from sun-exposed and shaded sides of different tissue types was measured over time.

RESULTS: The sun-exposed tissue of 'Braeburn' had higher initial levels of total vitamin C in the peel and phenolic compounds in the flesh than 'Golden Delicious', despite its greater susceptibility to gray mold. A substantial antioxidant response was recorded in diseased 'Braeburn' fruit 14 days after inoculation, which involved an elevated superoxide dismutase activity and ascorbate peroxidase activity, a progressive oxidation of total vitamin C, and a decrease in peroxidase activity and phenolic content. Disease development was slower on the sun-exposed sides than on the shaded sides.

CONCLUSION: The two cultivars appeared to utilize different strategies to defend themselves against B. cinerea. 'Golden Delicious' almost entirely escaped infection. Preharvest exposure of apple fruit to high light / temperature stress appears to prepare them to better resist subsequent postharvest attack and disease. 

Place, publisher, year, edition, pages
John Wiley & Sons, 2019
Keywords
Botrytis cinerea, Malus × domestica, antioxidant metabolism, postharvest storage
National Category
Food Science Microbiology
Identifiers
urn:nbn:se:hig:diva-30531 (URN)10.1002/jsfa.9827 (DOI)000485950200007 ()31150567 (PubMedID)2-s2.0-85068644495 (Scopus ID)
Funder
Vinnova, 2014-05046Vinnova, 2014-03890
Available from: 2019-08-20 Created: 2019-08-20 Last updated: 2019-10-11Bibliographically approved
Principal InvestigatorBui, Tuyet T. A.
Co-InvestigatorBerg, Björn
Co-InvestigatorLönn, Mikael
Co-InvestigatorJönsson, Petra
Co-InvestigatorGonzales Gaarslev, Natali
Coordinating organisation
University of Gävle
Funder
Period
2015-01-01 - 2017-12-31
National Category
HorticultureAgricultural ScienceFood Science
Identifiers
DiVA, id: project:313Project, id: 2014-05046_Vinnova

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