Publications by authors named "Ruben Felix-Gastelum"

Castor bean (Ricinus communis) is cultivated agriculturally for oil and ornamentally for its bright foliage and seed. Ornamental castor bean has naturalized in many areas of the world, including the state of Sinaloa, Mexico, where it is not planted commercially. In a survey conducted in 2019 in Sinaloa, wild castor bean was found widely affected by a foliar blight with symptoms similar to Alternaria ricini previously described in the United States (Stevenson 1945) and in the state of Chiapas, Mexico (López-Guillén et al.

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Article Synopsis
  • Spearmint, an aromatic herb commonly grown in Mexico, was impacted by a rust disease in May 2020, affecting 85% of a commercial crop with significant leaf damage.
  • Initial symptoms included yellowish spots on the leaves, progressing to necrotic spots surrounded by yellow halos, eventually leading to defoliation.
  • The rust fungus identified was Puccinia menthae, confirmed through morphological examination and genetic analysis, with a voucher sample stored for future reference.
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Sorghum () leaf sheath blight was observed for the first time in Sinaloa, Mexico in the summer of 2020. Fungal isolates were obtained from symptomatic tissue in potato dextrose agar. spp.

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The discovery of novel biocontrol agents requires the continuous scrutiny of native microorganisms to ensure that they will be useful on a regional scale. The goal of the present work was to discover novel antagonistic bacteria against ff. spp.

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, common sow thistle, is native to Europe, Northern Africa, and Western Asia. This plant has become a common weed throughout the world. In Mexico, this weed has become widely naturalized by replacing indigenous plants and invading many agricultural areas.

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(Scrophulariaceae family), commonly known as Texas sage or cenizo, is an evergreen shrub native to southwestern United States and northern Mexico. This plant is commercially sold as a native, drought-tolerant ornamental. During the spring of 2019 and 2020, typical symptoms of powdery mildew were found on cenizo plants growing as ornamentals in urban areas in the municipality of Ahome, Sinaloa, Mexico.

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Streptomyces sp. strain V2 was isolated from potato scab lesions in the state of Sinaloa, Mexico, and appears to be responsible for outbreaks in the area. The thaxtomin cluster was found in the ∼10.

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The stalk, ear and root rot (SERR) of maize caused by Fusarium verticillioides (Fv) severely impacts crop production in tropical and subtropical regions. The aim of the present work was to screen bacterial isolates in order to find novel native biocontrol agents against Fv. A culturable bacterial collection consisting of 11,520 isolates enriched in Firmicutes and Proteobacteria was created from rhizosphere samples taken from SERR symptomatic or asymptomatic maize plants.

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Burning the sugar cane field before harvesting has a negative impact on both air and human health, however this issue had not been explored in Mexico. The objective of this work was to determine the chromosomal damage in workers from sugar cane burning fields in Sinaloa, México. To this purpose, we analyzed 1000 cells of buccal exfoliated epithelia from 60 exposed workers and 60 non-exposed controls to determine micronucleus frequencies and other nuclear abnormalities.

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Genotoxic damage was evaluated in 70 agricultural workers, 25 women and 45 men, exposed to pesticides in Las Grullas, Ahome, Sinaloa, Mexico, with an average of 7 years of exposure. The effect was detected through the sister chromatid exchanges (SCE) in lymphocytes of peripheral blood and micronuclei (MN) and other nuclear anomalies (NA) in buccal exfoliated cells. Also, the influence on cellular proliferation kinetics (CPK) was studied by means of the replication index (RI) and the cytotoxic effect was examined with the mitotic index (MI).

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