| dc.creator | Zambrano, C | |
| dc.creator | Fincheria, P | |
| dc.creator | Quíroz-Cortéz, Andrés-Eduardo | |
| dc.creator | Gallardo, C | |
| dc.creator | Sandoval, B | |
| dc.date | 2019-05-28T20:08:13Z | |
| dc.date | 2022-06-18T21:53:03Z | |
| dc.date | 2019-05-28T20:08:13Z | |
| dc.date | 2022-06-18T21:53:03Z | |
| dc.date | 2017-12-01 | |
| dc.date | 2017 | |
| dc.date | 2017-11-29 | |
| dc.date.accessioned | 2023-08-22T04:37:41Z | |
| dc.date.available | 2023-08-22T04:37:41Z | |
| dc.identifier | 1141245 | |
| dc.identifier | https://hdl.handle.net/10533/235727 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8320520 | |
| dc.description | Microorganisms can be cataloged as a simple but effective chemical bio-factory that can respond
quickly to biotic and abiotic environmental changes such as, ecological pressure, contamination,
UV radiation, low and high temperatures, among the most importants. Secondary metabolites,
such as Volatile Organic Compounds (VOCs), are generated after or during a stress pressure and
their production by terrestrial fungi is widely known. However, the knowledge of VOCs produced
by Antartic fungi is scarce. Some researchers have proposed that VOCs are involved in intra- or
interspecific communication and/or in chemical defense against other microorganisms. Hence,
some of these VOCs can possess a high potential for being used in biotechnological application, for
instance for controlling fungal diseases. In Chile, Botrytis cinerea is the main phytopathological
disease affecting table-grapes export, causing in some seasons important losses during
postharvest. Its control includes the use of synthetic botryticides and SO2 in pre and postharvest
stage respectively. VOCs emerge as an alternative to the use of these chemicals. The objective of
this research was to evaluate the antifungal activity of Antarctic fungal strains. Samples were
collected from Greenwich Island, Barrientos Island, Rada Covadonga, Doumer Island, Deception
Island, Robert Island and King George Island. They were taken from each site and placed in sterile
whirl-pack sampling bag and cold stored (temperature) until their use. Fungal species from soil
were incubated in PDA. Subcultures were made for all the distinct morphological colonies until
obtain pure morphotype colonies. Antimicrobial activity was evaluated by two-compartmented
plate bioassay. GC-MS was carried out for VOCs identification. Preliminary results showed a strong
anti-Botrytis effect elicited by one of the strains. Alcohols were the main compounds released
from the bioactive Antarctic fungus strain. | |
| dc.language | eng | |
| dc.relation | instname: Conicyt | |
| dc.relation | reponame: Repositorio Digital RI2.0 | |
| dc.relation | International Workshop Advances In Science And Technology Of Bioresources | |
| dc.relation | 6° | |
| dc.relation | info:eu-repo/grantAgreement//1141245 | |
| dc.relation | info:eu-repo/semantics/dataset/hdl.handle.net/10533/93486 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
| dc.title | Antifungal activity elicited from volatile organic compounds (VOCS) released from Antartic fungus | |
| dc.type | Ponencia | |
| dc.type | info:eu-repo/semantics/lecture | |
| dc.coverage | Pucón | |
