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Congresso Brasileiro de Microbiologia 2023
 		Resumo: 50-2

50-2

PROSPECTION OF ANTÁTICA ISOLATES IN THE CONTROL OF PHYTOPATHOGENIC FUNGI

Autores:
Jessia Elem Cunha Barbosa (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Alysson Wagner Fernandes Duarte (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Kelly Fernanda Seara da Silva (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Mariana dos Santos (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Averlane Vieira Silva (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Vanessa Daiany Vieira Medeiros (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Maria Nicolle Pereira da Silva (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Cledna Kaline dos Santos Duarte (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Emanuelly Beatriz Tenório Sampaio (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Vannêssa Rodrigues Teles Maia (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS) ; Lidiany Alves Siqueira (UFAL - UNIVERSIDADE FEDERAL DE ALAGOAS)

Resumo:
The use of filamentous fungi from extreme environments has been widely studied as antagonistic agents against phytopathogens, offering a viable alternative to chemical pesticides in agricultural production. Considering the need for alternatives to pest control in agriculture, in addition to the need for alternatives to replace synthetic chemicals and at the same time minimize damage to the environment. The objective of this work was to evaluate the effect of antagonistic agents from extreme environments on the growth of phytopathogens in vitro. The antagonists tested were filamentous fungi isolated from samples from Antarctic soils, called F2.CR, F2.AL and F5.CR against the phytopathogenic fungi Colletotrichum musae and Lasiodiplodia Theobromae . To determine the antagonism, the colony pairing method was used, using as a parameter the formation of the inhibition halo exerted by the antagonist fungus, the size of the colony of the phytopathogen and the percentage of inhibition of the mycelial growth of the phytopathogen. Of the 3 specimens tested, all inhibited the growth of the pathogens tested, where F2.CR with the highest halo of inhibition with 52% and 43% of inhibition against Lasiodiplodia Theobromae and Colletotrichum musae respectively. Future studies are being carried out to evaluate other parameters and variables. Perspectives on the use of these species in commercial formulations designed to control plant diseases are promising, requiring evaluation of their efficiency in greenhouse and field. Antarctic isolates are in the process of molecular identification, and fungal extracts are being produced for further testing, in addition to helping to better understand the microbial diversity present in Antarctica. This collection will allow the exploration of possible applications of fungi in industrial strategies and other areas of scientific interest.

Palavras-chave:
 EXTREMOPHILES, ANTAGONISM, AGRICULTURE


Agência de fomento:
FAPEAL