Elda María Beltrán-Peña

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Filamentous fungi belonging to the genus Trichoderma have long been recognized as agents for the biocontrol of plant diseases. In this work, we investigated the mechanisms involved in the defense responses of Arabidopsis thaliana seedlings elicited by co-culture with Trichoderma virens and Trichoderma atroviride. Interaction of plant roots with fungal(More)
Auxin is known to stimulate protein synthesis in many plant tissues, but the mechanisms involved in this process are unknown. The present research inquires whether auxin might regulate selective translation of mRNAs by inducing S6 ribosomal protein phosphorylation on the 40S ribosomal subunit in maize (Zea mays L.). Maize embryonic axes auxin-stimulated by(More)
Plants adapt to challenging environmental factors by modulating morphogenetic processes. Although it has been speculated that activation of defense responses against pathogens leads to plant growth adjustment, little is known about developmental and architectural responses to defense stimulators. In this report we evaluated the activity of(More)
In several eukaryotic organisms the mRNA expression for ribosomal proteins (RPs) is highly regulated at the translational level. The present work addresses the synthesis of RPs early in germination and particularly the origin of their transcripts. Excised maize axes were labeled with [35S]methionine for 6 h, and both cytoplasmic and ribosomal proteins were(More)
Superoxide dismutase (SOD) activities of the oomycete Phytophthora cinnamomi were examined. Five polypeptides with manganese superoxide dismutase (MnSOD) activity were found in mycelium growing in liquid culture with relative molecular weights ranging from approximately 25 to 100 kDa. Comparison with characterized avocado SODs showed no evidence for the(More)
Cell growth is regulated by the target of rapamycin (TOR) signaling pathway, which integrates environmental cues in eukaryotes. In plants the final organ size is determined by the number and cell size. Several proteins involved in the TOR signaling pathway are conserved in plants, although a differential regulation has been proposed because insensitivity to(More)
Certain RNA molecules are known to be sequestered and stored as ribonucleoprotein particles (RNPs) in many different tissues, particularly at some stages of metabolic quiescence. In this research RNPs from embryonic axes of mature maize seeds were isolated by sucrose and CsCl gradient centrifugation and characterized based on their RNA and protein contents.(More)
In the last decades, the incidence of type 2 diabetes has increased alarmingly worldwide including Mexico, and particularly among Mexican-Americans. The etiology of type 2 diabetes is multiple, in which there is a complex interaction between environmental and genetic risk factors. The kidney is a target organ that is damaged when type 2 diabetes occurs. The(More)
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