NDLI: Control of infection of tomato fruits by Alternaria and mycotoxin production using plant extracts

Content Provider	Springer Nature Link
Author	da Cruz Cabral, Lucía Fernández Pinto, Virginia Patriarca, Andrea
Copyright Year	2016
Abstract	Tomato fruits are susceptible to infection by Alternaria species. In addition, Alternaria species may contaminate the fruits with mycotoxins. There is thus interest in control systems to minimise pathogenicity and control toxin production. The objectives of this study were to examine the effect of plant extracts of Eucalyptus globulus and Calendula officinalis on the growth of strains of Alternaria alternata and A. arborescens, on pathogenicity of tomato fruits and mycotoxin production. The growth bioassays showed that the ethanolic and chloroformic fractions of E. globulus were the most effective in reducing growth of A. alternata (66–74 %) and A. arborescens (86–88 %), respectively at 2500 μg/g. The effects of plant extracts on mycotoxin biosynthesis were variable and strain dependent. The most effective fractions in decreasing mycotoxin accumulation were the ethanolic and chloroformic extracts of E. globulus, which reduced tenuazonic acid by 89 %, alternariol by 75–94 % and almost complete inhibition of alternariol monomethyl ether. All the tested fractions reduced percentage of infected tomato fruits when compared to the controls. The ethanolic and chloroformic fractions of E. globulus completely inhibited growth of A. alternata and A. arborescens on unwounded fruits and reduced the aggressiveness on wounded fruits of strains of both species significantly.
Starting Page	363
Ending Page	373
Page Count	11
File Format	PDF
ISSN	09291873
Journal	European Journal of Plant Pathology
Volume Number	145
Issue Number	2
e-ISSN	15738469
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-01-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Tenuazonic acid Alternariols Antifungal Eucalyptus globulus Calendula officinalis Plant Pathology Plant Sciences Ecology Agriculture Life Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture Agronomy and Crop Science

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