Publications by authors named "Isidro Marquez"

In December 2022, blossom blight, abortion, and soft rot of fruits were observed on Cucurbita pepo L. var. Zucchini in Mexico under greenhouse conditions (temperatures of 10 to 32°C and relative humidity up to 90%).

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Article Synopsis
  • Bacterial wilt, caused by the Ralstonia solanacearum species complex (RSSC), is a significant disease affecting solanaceous crops, with a case observed in eggplant in Culiacán, Mexico, showing up to 30% disease incidence.
  • Isolates from diseased plants were grown on specific media, revealing typical RSSC characteristics and confirming the bacteria's identity through molecular methods, including PCR and sequencing.
  • The strain obtained has been cataloged as sequevar 14 and is preserved in a research collection in Mexico, with its genetic sequence made publicly accessible in GenBank.
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Mexico produces more than four million tons of tomato fruits and ranks tenth worldwide. In February 2022, tomato plants in a greenhouse in Culiacan, Sinaloa State, were affected by wilt diseases with an incidence of 20% and irreversible wilt and death of the infected plants (severity up 70%). When cut stems from affected plants, a reddish to brown discoloration of the vascular system was observed and these were disinfected with 1% NaClO for 5 min and then placed in a humid chamber.

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Cucumber (Cucumis sativus L.) is a fruit crop with high consumption worldwide. Mexico had a cucumber production of 826,485 tonnes in 2019.

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Watermelon is an important vegetable crop in Mexico and produced on 358,105 ha, with nearly 1.5 x 106 tons. In September 2019, brown, irregular shape to round lesions with concentric rings were observed on the leaves and stems of watermelon plants in Sonora State.

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Tomato ( L.) is an important vegetable crop in Mexico. During 2015 and 2016, symptoms of stem canker were observed on tomato plants in two greenhouses located in the states of Sinaloa and San Luis Potosi, Mexico.

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Cucumber (Cucumis sativus L.) is an important vegetable crop for Mexico, which is the fifth highest producer of this crop worldwide. In November 2019, a fruit rot disease characterized by the presence of white mycelial growth at both ends of the fruit was observed with an incidence of approximately 30% in a greenhouse production area in Sinaloa State (geographical coordinates: 24°35'25'' N, 107°26'21'' O).

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Eggplant (Solanum melongena L.) is an important solanaceous crop that is produced mainly in tropical and subtropical regions and is widely consumed worldwide. In 2018, eggplant production in Mexico was approximately 80000 t, and Sinaloa State contributed 96% of this production; however, this crop suffers significant losses from plant pathogens.

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