Publications by authors named "Sylvia Fernandez-Pavia"

Article Synopsis
  • CMU-08 is a strain isolated from Michoacán, Mexico, known for thriving in a wide temperature (16-32 °C) and pH (4-9) range on PDA and MEA media.
  • This strain effectively inhibits six types of harmful fungi and oomycetes through direct mycoparasitism and producing inhibitory metabolites, with variable success depending on the pathogen and culture medium used.
  • CMU-08 shows potential as a biocontrol agent due to its versatility and the ability to reduce damage from pathogens in tests with tomato leaves by up to 50%.
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Mexico ranks second in the world for Persian lime () exports, making it the principal citrus exporter within the national citrus industry, exporting over 600,000 tons per year. However, diseases are the main factor reducing production, resulting in significant economic losses. Among these diseases, fungal diseases like dieback, caused by species of , are an emerging issue in Persian lime.

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Blackberry is an economically important crop in Mexico, and its yield is substantially reduced by gray mold, a disease caused by . One of the means to obtain -resistant plants is gamma irradiation. Shoot tips of in vitro-micropropagated blackberry plants ( 'Tupy') were irradiated with five doses of Cobalt-60 gamma radiation (0, 15, 30, 45, and 60 Gy) and cultured on Murashige and Skoog basal medium containing 1.

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Mango malformation disease (MMD) caused by spp. is an important limiting factor in most production areas worldwide. and have been reported as causing MMD in Mexico.

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(rosy trumpet) is an economically important neotropical tree in Mexico that is highly valued for the quality of its wood, which is used for furniture, crafts, and packing, and for its use as an ornamental and shade tree in parks and gardens. During surveys conducted in the lower Balsas River Basin region in the states of Guerrero and Michoacán, symptoms of floral malformation were detected in trees. The main objectives of this study were to describe this new disease, to determine its causal agent, and to identify it using DNA sequence data.

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Scientific communication is facilitated by a data-driven, scientifically sound taxonomy that considers the end-user's needs and established successful practice. In 2013, the community voiced near unanimous support for a concept of that represented a clade comprising all agriculturally and clinically important species, including the species complex (FSSC). Subsequently, this concept was challenged in 2015 by one research group who proposed dividing the genus into seven genera, including the FSSC described as members of the genus , with subsequent justification in 2018 based on claims that the 2013 concept of is polyphyletic.

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Article Synopsis
  • Fusarium pseudocircinatum is identified as the primary cause of big-leaf mahogany malformation disease (BLMMD) in mahogany trees in Mexico, significantly impacting this valuable timber species.
  • The study assessed genetic diversity among F. pseudocircinatum isolates collected from 611 mahogany trees across four Mexican states, finding high overall genetic variability with 87 unique multilocus genotypes identified.
  • The high genetic diversity (average 0.147) and significant variation within genotypes suggest ongoing genetic flow and possible historical dispersion routes, particularly between isolates from Colima and Michoacán.
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  • The study identified limitations in existing PCR assays for genotyping mating types in the FFSC isolates linked to various plant species in Mexico.
  • A new multiplex PCR assay was developed, which successfully genotyped all isolates in a validation panel, compared to published assays that only worked for 46.5-59% of the panel.
  • Findings indicate that while many FFSC/FNSC species do not reproduce sexually, if they do, their reproductive strategy is likely heterothallic (self-sterile).
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  • An oomycete plant pathogen affects a variety of plants and is particularly harmful to chili pepper crops worldwide.
  • The research aimed to enhance the genome resources related to this pathogen.
  • Six different isolates of the pathogen were sequenced from Mexico to contribute to the understanding of its diversity.
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Article Synopsis
  • * Researchers obtained 61 isolates (32 from mango and 29 from mahogany) and used 14 internal simple sequence repeat (ISSR) primers, ultimately selecting 5 that showed the most variation, producing 49 polymorphic bands.
  • * Results revealed significant genetic variability among the isolates based on the host plant (43%), less so between mango and mahogany isolates (34%), indicating that the host of origin has a greater impact on genetic diversity than geographic location.
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Globally destructive crop pathogens often emerge by migrating out of their native ranges. These pathogens are often diverse at their centre of origin and may exhibit adaptive variation in the invaded range via multiple introductions from different source populations. However, source populations are generally unidentified or poorly studied compared to invasive populations.

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The primary objective of this study was to characterize Fusarium spp. associated with the economically devastating mango malformation disease (MMD) in Mexico. In all, 142 Fusarium strains were isolated from symptomatic mango inflorescences and vegetative tissues in eight geographically diverse Mexican states from 2002 through 2007.

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