Banca de DEFESA: JOSÉ TOMÁZ FERREIRA NUNES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JOSÉ TOMÁZ FERREIRA NUNES
DATE: 27/02/2023
TIME: 09:00
LOCAL: Prédio da Pós-graduação
TITLE:

ENDOPHYTIC ISOLATES IN GENOTYPES OF Phaseolus lunatus L.

KEY WORDS:

Endophytes; diversity; resistance; biological control

PAGES: 33
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Fitopatologia
SUMMARY:

Even with some inconsistency among the authors about the concept that best characterizes an endophytic, the most usual is that endophytic fungi are those that live, in at least part of their life cycle, inside plant tissues, without apparently causing any harm to their hosts. These definitions began to be discussed with the mycologist De Bary in 1866, but further studies of these organisms did not begin until about a hundred years later, around 1970. Currently, many aspects of endophytic fungi are well established, but there is still a vast field to be explored. Understanding this complex relationship between endophytic and host is fundamental so that, possibly, we can use these organisms in our favor in different fields of science, such as, for example, in the biological control of anthracnose in fava beans. The objectives proposed here aimed to contribute to the advancement of knowledge about the interaction between the lima bean crop and its endophytic fungi, providing opportunities for future biotechnological applications of endophytic fungi in a perspective of developing products and biotechnological processes of interest to agriculture. In the present study, cultivable fungi isolates, which are likely to be beneficial for plant growth, health, and productivity, will be identified, and whether these endophytes vary between plant organs and broad bean genotypes from an Andean and Mesoamerican material, also contrasting for resistance to anthracnose. The study will gather basic information on the occurrence and diversity of endophytic fungal species in new and old leaves, flowers, and fruits of fava genotypes. The isolation and identification of cultivable endophytes may contribute to future studies of the function and application of endophytic fungi in resistance to biotic and abiotic stresses. (AZAD and KAMINSKY, 2016; ABDEL-MONAIN et al., 2014; BERG et al., 2014). Aiding in the development of new, efficient, and sustainable strategies to improve the quality and productivity of crops, while reducing the application of harmful chemicals. In article I, “Diversity of endophytic fungi in Phaseolus lunatus”, the composition and evolution of endophytic fungi during the vegetative and reproductive phases of the host in distinct and contrasting gene pools regarding resistance to anthracnose is presented. Endophytes were isolated from asymptomatic without disease symptoms, namely: new leaves, old leaves, flowers, and pods. With the morphocultural and molecular characterization, the isolates were described until their respective genera. And in Article II, “Prevalence of Colletotrichum ssp. endophytic in broad bean”, a phylogenetic evaluation of endophytic fungi of the genus Colletotrichum is described, and the use of different genomic regions is proposed to evaluate the genetic variability of fungi of this genus.

BANKING MEMBERS:
Presidente - 1790557 - GILDEMBERG AMORIM LEAL JUNIOR
Interno(a) - 2149632 - SARAH JACQUELINE CAVALCANTI DA SILVA
Externo(a) ao Programa - 1119045 - EDNA PEIXOTO DA ROCHA AMORIM
Externo(a) à Instituição - JOÃO MANOEL DA SILVA
Externo(a) à Instituição - MAYRA MACHADO DE MEDEIROS FERRO