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Article
Inositol deficiency in yeast: metabolic, enzymatic and autoradiographic studies
The addition of inositol to starved cells of Saccharomyces cerevisiae NCYC 86 resulted in an initiation of growth. Inositol was incorporated into phosphatidylinositol and after a lag period RNA was the first macr...
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Article
Determination of Flower Constancy in Bombus atratus Franklin and Bombus bellicosus Smith (Hymenoptera: Apidae) through Palynological Analysis of Nectar and Corbicular Pollen Loads
The flower constancy (the visit to a single plant species during a foraging trip) in pollinator insects is a theme widely discussed in behavioral ecology and has an important implication in the evolution of an...
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Article
Molecular diversity and genetic relationships in Secale
The objective of this study was to quantify the molecular diversity and to determine the genetic relationships among Secale spp. and among cultivars of Secale cereale using RAPDs, ISSRs and sequence analysis of s...
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Article
Open AccessPGA1-induced apoptosis involves specific activation of H-Ras and N-Ras in cellular endomembranes
The cyclopentenone prostaglandin A1 (PGA1) is an inducer of cell death in cancer cells. However, the mechanism that initiates this cytotoxic response remains elusive. Here we report that PGA1 triggers apoptosis b...
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Article
Characterization, genetic diversity, phylogenetic relationships, and expression of the aluminum tolerance MATE1 gene in Secale species
Aluminum (Al) is the main limiting factor for crop production in acidic soils. Efflux of organic acids is one of the mechanisms that determine Al-tolerance, and an Al-activated citrate transporter (multidrug a...
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Article
Tracking the Dynamic Ecological History of a Tropical Urban Estuary as it Responds to Human Pressures
Coastal cities in tropical areas are often low-lying and vulnerable to the effects of flooding and storms. San Juan, Puerto Rico, is a good example of this. It is built around a lagoon-channel complex called t...
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Article
Impact of Nutritional Stress on Honeybee Gut Microbiota, Immunity, and Nosema ceranae Infection
Honeybees are important pollinators, having an essential role in the ecology of natural and agricultural environments. Honeybee colony losses episodes reported worldwide and have been associated with different...