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Effect of calcium salts on postharvest fungal pathogens in vitro

In vitro efekat kalcijumovih soli na gljivične skladišne patogene

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Authors
Stošić, Stefan
Stojanović, Saša
Milosavljević, Anja
Pfaf-Dolovac, Erika
Živković, Svetlana
Article (Published version)
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Abstract
In the recent years, several studies have shown that calcium salts may have potential as environmentally compatible, nontoxic fungicides for controlling postharvest fungal patho­gens. Therefore, the objective of this study was to evaluate and compare the effects of calcium chloride and calcium hydroxide on in vitro mycelial growth, spore germination and germ tube growth of Colletotrichum acutatum, C. gloeosporioides, Alternaria alternata, and Penicillium expansum. The obtained results showed that the fungal isolates grew sim­ilarly or stimulated in the presence of 1 and 1.5% calcium salts compared to the control. After seven days of incubation, reduction of mycelial growth was observed only on PDA supplemented with 2% calcium salts. Calcium chloride and calcium hydroxide at 1.5% and 2.0% concentrations significantly decreased spore germination and germ tube growth of all fungal isolates. The results of this study show that the tested calcium salts can be used as a alternative treatment... against postharvest fungal pathogens C. acutatum, C. gloeosporioides, A. alternata and P. expansum.

Tokom poslednjih nekoliko godina, više studija je pokazalo da u kontroli gljivičnih skladišnih patogena soli kalcijuma mogu imati potencijal kao ekološki kompatibilni, netoksični fungicidi. Stoga je cilj ovog istraživanja bio da se u in vitro uslovima procene i uporede efekti kalcijum hlorida i kalcijum hidroksida na porast micelije, klijavost konidija i rast klicine cevi gljiva C. acutatum, C. gloeosporioides, A. alternata, i P. expansum. Dobijeni rezultati su pokazali da je u prisustvu 1 i 1,5% kalcijumovih soli porast izolata gljiva u tretmanima sličan ili povećan u odnosu na kontrolu. Nakon 7 dana inkubacije, redukcija porasta micelije je utvđena samo na PDA podlozi sa 2% soli kalcijuma. Kalcijum hlorid i kalcijum hidroksid u koncentracijama od 1,5 i 2,0% značajno smanjuju klijavost konidija i rast klicinih cevi svih ispitivanih izolata gljiva. Rezultati ove studije pokazuju da se testirane soli kalcijuma mogu primeniti kao alternativni tretman u kontroli gljivičnih skladišnih pato...gena, C. acutatum, C. gloeosporioides, A. alternata i P. expansum.

Keywords:
postharvest fungal pathogens / calcium salts / in vitro effect / gljivični skladišni patogeni / soli kalcijuma / in vitro efekat
Source:
Zaštita bilja, 2014, 65, 1, 40-46
Publisher:
  • Institute for Plant Protection and Environment, Belgrade
Projects:
  • Development of integrated approach in plant protection for control harmful organisms (RS-31018)

DOI: 10.5937/zasbilj1401040S

ISSN: 0372-7866

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URI
http://plantarum.izbis.bg.ac.rs/handle/123456789/329
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