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1.
F1000Res ; 12: 1327, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38680601

RESUMO

The thread blight disease (TBD) of cacao ( Theobroma cacao) in the department of Amazonas, Peru was recently reported to be caused by Marasmius tenuissimus (sect. Neosessiles). This same species is known to be the main causal agent of TBD in West Africa. However, some morphological characteristics, such as the presence of rhizomorphs, the almost exclusively white color, and pileus sizes less than 5 mm, among others, differ to the description of M. tenuissimus. Therefore, we aimed to conduct a taxonomic revision of the cacao-TBD causal agent in Peru, by using thorough micro and macro morphological, phylogenetic, and nuclear and mitochondrial genomic approaches. We showed that the causal agent of TBD of cacao in Amazonas, Peru, belongs to a new species, Marasmius infestans sp. nov. This study enriches our knowledge of species in the sect. Neosessiles, and strongly suggests that the M. tenuissimus species complex is highly diverse.


Assuntos
Cacau , Filogenia , Doenças das Plantas , Cacau/microbiologia , Cacau/genética , Doenças das Plantas/microbiologia , Peru , Genômica
2.
Rev. peru. biol. (Impr.) ; 28(1): e17867, Jan-Mar 2021. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1289877

RESUMO

Abstract Genetic diversity is an important component of biodiversity, and it is crucial for current efforts to protect and sustainably manage several organisms and habitats. As far as we know, there is only one work describing Peruvian genetic information stored in public databases. We aimed to update this previous work searching in four public databases that stored digital sequence information: Nucleotide, BioProject, PATRIC, BOLD. With this information, we comment on the contribution of Peruvian institutions during recent years. In Nucleotide, the largest database, Bacteria are the most sequenced organisms by Peruvian institutions (70.60%), pathogenic bacteria such as Pasteurella multocida, Neisseria meningitidis, and Vibrio parahaemolyticus were the most abundant. We found no sequence records from the Archaea domain. In BioProject, the most common sequence belongs to Salmonella enterica subsp. enterica serovar Infantis. In PATRIC, a database of pathogenic agents, Mycobacterium tuberculosis and Yersinia pestis had the highest number of entries. Finally, in BOLD, an exclusively Eukaryotic database, Chordata (Aves and Actinopterygii), Angiospermae, and Arthropoda (Insecta, and Arachnida) were the most frequent records. Our results would indicate research preferences of Peruvian institutions, focusing on infectious diseases and some Eukaryotic phyla. Although there has been a significant increase of DNA information submitted by Peruvian institutions since the last report, the genetic diversity reflected in these databases remains inconsistent with the diversity in the country. More efforts must be made to obtain genetic information from more underestimated taxonomic groups and to promote more genetic research in regional Peruvian institutions.


Resumen La diversidad genética es una componente importante de la biodiversidad y es crucial para los esfuerzos actuales de proteger y gestionar de manera sostenible varios organismos y hábitats. Hasta donde sabemos, solo hay un trabajo que describe la información genética peruana almacenada en bases de datos públicas. Nuestro objetivo fue actualizar este trabajo previo buscando en cuatro bases de datos públicas que almacenaban información de secuencias digitales: Nucleotide, BioProject, PATRIC, BOLD. Con esta información analizamos la contribución de las instituciones peruanas durante los últimos años. En Nucleotide, la base de datos más grande, las bacterias fueron los organismos más secuenciados por las instituciones peruanas (70.60%), las bacterias patógenas como Pasteurella multocida, Neisseria meningitidis y Vibrio parahaemolyticus fueron las más abundantes. No encontramos registros de secuencias del dominio Archaea. En BioProject, la secuencia más común pertenece a Salmonella enterica subsp. enterica serovar Infantis. En PATRIC, una base de datos de agentes patógenos, Mycobacterium tuberculosis y Yersinia pestis tuvieron el mayor número de entradas. Finalmente, en BOLD, una base de datos exclusivamente eucariota, Chordata (Aves y Actinopterygii), Angiospermae y Arthropoda (Insecta y Arachnida) fueron los registros más frecuentes. Nuestros resultados indicarían las preferencias de investigación de las instituciones peruanas, centrándose en enfermedades infecciosas y algunos filos eucariotas. Aunque ha habido un aumento significativo de la información de ADN enviada por las instituciones peruanas desde el último informe, la diversidad genética reflejada en estas bases de datos sigue siendo inconsistente con la diversidad del país. Se deben realizar más esfuerzos para obtener información genética de grupos taxonómicos más subestimados y promover más investigación genética en las instituciones regionales peruanas.

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