Pathogenic Fusarium oxysporum f. sp. cepae growing inside onion bulbs emits volatile organic compounds that correlate with the extent of infection

Näytä kaikki kuvailutiedot



Pysyväisosoite

http://hdl.handle.net/10138/327098

Lähdeviite

Wang , A , Islam , M N , Johansen , A , Haapalainen , M , Latvala , S & Edelenbos , M 2019 , ' Pathogenic Fusarium oxysporum f. sp. cepae growing inside onion bulbs emits volatile organic compounds that correlate with the extent of infection ' , Postharvest Biology and Technology , vol. 152 , pp. 19-28 . https://doi.org/10.1016/j.postharvbio.2019.02.010

Julkaisun nimi: Pathogenic Fusarium oxysporum f. sp. cepae growing inside onion bulbs emits volatile organic compounds that correlate with the extent of infection
Tekijä: Wang, Aimei; Islam, Md Nahidul; Johansen, Anders; Haapalainen, Minna; Latvala, Satu; Edelenbos, Merete
Tekijän organisaatio: Department of Agricultural Sciences
Päiväys: 2019-06
Kieli: eng
Sivumäärä: 10
Kuuluu julkaisusarjaan: Postharvest Biology and Technology
ISSN: 0925-5214
DOI-tunniste: https://doi.org/10.1016/j.postharvbio.2019.02.010
URI: http://hdl.handle.net/10138/327098
Tiivistelmä: Diseases develop during the storage of onions. To minimize losses, new methods are needed to identify diseased bulbs early in storage. Volatile organic compounds (VOCs), the respiration rate, weight loss, and the dry matter content were investigated for 1-7 weeks post inoculation of bulbs with water (control) and two strains (Fox006 or Fox260) of Fusarium oxysporum f. sp. cepae. Photos, multispectral image analysis, and real-time polymerase chain reaction (PCR) showed no infection in the control onions, weak pathogenic infection in Fox006-onions, and strong pathogenic infection in Fox260-onions at week 7 post inoculation. Infected bulbs exhibited increased respiration rate, increased VOC emission rate, and increased weight loss. The control and Fox006-onions did not respond to inoculation and had similar reaction pattern. Forty-three different VOCs were measured, of which 17 compounds had sulfur in their chemical structure. 1-Propanethiol, methyl propyl sulfide, and styrene were emitted in high concentrations and were positively correlated with the extent of infection (r = 0.82 - 0.89). Therefore, these compounds were the most promising volatile markers of Fusarium basal rot infection. For the first time, we show that the extent of fungal infection determined by real-time PCR in onion bulbs is related with VOC emission.
Avainsanat: Allium cepa L.
Food spoilage
SPME
Image analysis
Real-time PCR
Respiration rate
DISCRIMINANT-ANALYSIS
PROLIFERATUM
QUALITY
1183 Plant biology, microbiology, virology
416 Food Science
Vertaisarvioitu: Kyllä
Tekijänoikeustiedot: cc_by_nc_nd
Pääsyrajoitteet: openAccess
Rinnakkaistallennettu versio: acceptedVersion


Tiedostot

Latausmäärä yhteensä: Ladataan...

Tiedosto(t) Koko Formaatti Näytä
Aimei_Manuscrip ... ec_last_author_version.pdf 888.3KB PDF Avaa tiedosto

Viite kuuluu kokoelmiin:

Näytä kaikki kuvailutiedot