Publications by authors named "J Guajardo Guajardo"

During the 2021-22 and 2022-23 seasons (December to February), onion plants (Allium cepa L.) showing decay, leaf blight, chlorosis and water soak lesions were collected in Central Chile. Five symptomatic plants were sampled from 20 different onion fields.

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Article Synopsis
  • A novel MADS-box transcription factor from D. Don, characterized as a 165 amino acid protein in group II, is involved in responses to pine tree stem inclinations.
  • This factor was found to regulate 947 differentially expressed genes through an increase in expression, with significant impacts on cell wall remodeling and the phenylpropanoid pathway, notably affecting monolignol biosynthesis.
  • EMSA assays confirm that PrMADS11 interacts with CArG-box sequences, suggesting its role in modulating gene expression related to cell wall dynamics and contributing to the tree's response to trunk inclination.
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Nearly 5,400 hectares of long-day onions () are cultivated in the Central Zone of Chile (UTM 33°3´S to 37°24´S). During summer 2021-22 and 2022-23 (December to February), followed by high temperatures (around 35°C) and high humidity conditions, symptoms showing yellowing, soft rot, blight on old leaves, necrotic tips, and soft bulbs were observed. The affected plants were observed in "spots" into the fields, and the incidence reached 5-10%.

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Although fumed silica/siloxane suspensions are commonly employed in additive manufacturing technology, the interplay between shelf life, storage conditions, and printability has yet to be explored. In this work, direct ink writing (DIW) was used to print unique three-dimensional structures that required suspensions to retain shape and form while being printed onto a substrate. Suspensions containing varying concentrations of hydrophobic and hydrophilic silica were formulated and evaluated over a time span of thirty days.

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Data on characteristics and outcomes of coronavirus (COVID)-19 patients complicated with arterial thrombosis (AT) are scarce. Therefore, we carried out a systematic review (PRISMA, PROSPERO statements; PubMed, Scopus, and Web of Science) to identify risk factors, clinical presentation, treatment, and outcomes. We included publications from December 2019 to October 2020.

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