Fecha/hora: 16/06/2024 07:39:13

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 28/09/2022
Fecha de la última actualización: | 15/11/2022
Autoria: | BOCK, C. H; FRUSSO, E.; ZOPPOLO, R.; ORTIZ, E. R.; SHILLER, J.; CHARLTON, N. D.; YOUNG, C. A.; RANDALL, J. J.
Afiliación: | CLIVE H. BOCK, United States Department of Agriculture-Agriculture Research Service, Southeastern Fruit and Tree Nut Research Lab, 21 Dunbar Road, Byron, GA 31008, U.S.A.; ENRIQUE FRUSSO, Instituto de Recursos Biológicos, INTA Castelar, Las Cabañas y De Los Reseros s.n., (1686) Hurlingham, Buenos Aires, Argentina.; ROBERTO JOSE ZOPPOLO GOLDSCHMIDT, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; EDSON R. ORTIZ, Divinut Indústria de Nozes Ltda., Rodovia BR-153, km 375, CEP 96504-800 - Cachoeira do Sul/RS, Brazil.; JASON SHILLER,, Scion, Rotorua, New Zealand.; NIKKI D. CHARLTON, Noble Research Institute, 2510 Sam Noble Parkway, Ardmore, OK 73401, U.S.A.; NIKKI D. CHARLTON, Noble Research Institute, 2510 Sam Noble Parkway, Ardmore, OK 73401, U.S.A.; CAROLYN A. YOUNG, Noble Research Institute, 2510 Sam Noble Parkway, Ardmore, OK 73401, U.S.A.; Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, 74078, U.S.A.; ENNIFER J RANDALL, JNew Mexico State University, Las Cruces, NM 88003, U.S.A.
Título: | Population genetic characteristics and mating type frequency of Venturia effusa from Pecan in South America.
Año de publicación: | 2022
Fuente/Imprenta: | Phytopathology, 2022, volume 112, issue 10, pages 2224-2235. doi: https://doi.org/10.1094/PHYTO-01-22-0031-R
ISSN: | 1943-7684 (electronic)
DOI: | 10.1094/PHYTO-01-22-0031-R
Idioma: | Inglés
Notas: | Article history: Accepted for publication 16 May 2022; Published Online 26 September 2022. -- Corresponding author: C. H. Bock; E-mail Address: clive.bock@usda.gov --
Contenido: | ABSTRACT.- Scab, caused by the plant-pathogenic fungus Venturia effusa, is a major disease of pecan in South America, resulting in loss of quantity and quality of nut yield. Characteristics of the populations of V. effusa in South America are unknown. We used microsatellites to describe the genetic diversity and population structure of V. effusa in South America, and determined the mating type status of the pathogen. The four hierarchically sampled orchard populations from Argentina (AR), Brazil (BRC and BRS), and Uruguay (UR) had moderate to high genotypic and gene diversity. There was evidence of population differentiation (Fst = 0.196) but the correlation between geographic distance and genetic distance was not statistically significant. Genetic differentiation was minimal between the UR, BRC, and BRS populations, and these populations were more clearly differentiated from the AR population. The MAT1-1 and MAT1-2 mating types occurred in all four orchards and their frequencies did not deviate from the 1:1 ratio expected under random mating; however, multilocus linkage equilibrium was rejected in three of the four populations. The population genetics of South American populations of V. effusa has many similarities to the population genetics of V. effusa previously described in the United States. Characterizing the populations genetics and reproductive systems of V. effusa are important to establish the evolutionary potential of the pathogen and, thus, its adaptability-and can provide a basis for informed approaches to utilizing available host resistance and determining phytosanitary needs. © 2022 The American Phytopathological Society
Palabras-Clave: | Ascomycete; Exotic pathogen; Genetic variability; MATI-1; MATI-2; Mating type; Population genetic; Population genetic diversity.
Categoría del tema: | F30 Genética vegetal y fitomejoramiento
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (103183-1) - PXI - AP - DD - PP/PHYTOPATHOLOGY/2022 -  -  - DIS