Banca de QUALIFICAÇÃO: MARIA JUSSARA DOS SANTOS DA SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : MARIA JUSSARA DOS SANTOS DA SILVA
DATE: 31/08/2022
TIME: 09:00
LOCAL: Prédio dos PPGs do CECA
TITLE:

Identification of Fusarium spp. associated with Damping-off in coriander culture and evaluation of sensitivity to fungicides.

The Northeast region is one of the main coriander producing

                                      regions in Brazil. However, plant productivity and quality are

                                      reduced due to root rot caused by Fusarium species.

                                      Therefore, the present work aims to identify and characterize

                                      Fusarium species associated with damping-off of coriander

                                      seedlings in the states of Alagoas, Pernambuco and Ceará and

                                      to evaluate the sensitivity of the species to fungicides. A total of

                                      thirty-nine isolates from coriander seedlings with symptoms of

                                      wilting, darkening of the roots and damping-off were obtained.

                                      All isolates were pathogenic causing damping-off symptoms in

                                      coriander seedlings. And Twenty-one isolates were subjected

                                      to molecular phylogenetic analysis of the EF-1α and RPB2

                                      gene regions. The phylogenetic analysis of concatenated

                                      Bayesian Inference (EF-1 α and RPB2) showed that eighteen

                                      isolates clustered with the species of the F. oxysporum

                                      complex, being seventeen identified as F. fabacearum and one

                                      as F. gossypinum. And three isolates were grouped with

                                      species of the F. solani complex, being identified as F.

                                      falciforme. To date, the species F. fabacearum and F.

                                     gossypinum are described for the first time causing damping-off

                                      in coriander.

 

KEY WORDS:

Coriandrum sativum, multilocus analysis

PAGES: 68
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Fitopatologia
SUMMARY:

The Northeast region is one of the main coriander producing regions in Brazil. However, plant productivity and quality are reduced due to root rot caused by Fusarium species. Therefore, the present work aims to identify and characterize Fusarium species associated with damping-off of coriander seedlings in the states of Alagoas, Pernambuco and Ceará. A total of thirty-nine isolates from coriander seedlings with symptoms of wilting, darkening of the roots and damping-off were obtained. All isolates were pathogenic causing damping-off symptoms in coriander seedlings. And Twenty-one isolates were subjected to molecular phylogenetic analysis of the EF-1α and RPB2 gene regions. The phylogenetic analysis of concatenated Bayesian Inference (EF-1 α and RPB2) showed that eighteen isolates clustered with the species of the F. oxysporum complex, being seventeen identified as F. fabacearum and one as F. gossypinum. And three isolates were grouped with species of the F. solani complex, being identified as F. falciforme. To date, the species F. fabacearum and F. gossypinum are described for the first time causing damping-off in coriander.

BANKING MEMBERS:
Interna - 1546023 - IRAILDES PEREIRA ASSUNCAO
Interna - 2149632 - SARAH JACQUELINE CAVALCANTI DA SILVA
Externa à Instituição - JULIANA PAIVA CARNAUBA - IFAL