Diploid Nuclei Occur throughout the Life Cycles of Pucciniales Fungi.

Within Eukaryotes, fungi are the typical representatives of haplontic life cycles. Basidiomycota fungi are dikaryotic in extensive parts of their life cycle, but diploid nuclei are known to form only in basidia. Among Basidiomycota, the Pucciniales are notorious for presenting the most complex life cycles, with high host specialization, and for their expanded genomes.

Mercury biomagnification in an Antarctic food web of the Antarctic Peninsula.

Under the climate change context, warming Southern Ocean waters may allow mercury (Hg) to become more bioavailable to the Antarctic marine food web (i.e., ice-stored Hg release and higher methylation rates by microorganisms), whose biomagnification processes are poorly documented.

Challenges and Opportunities for Academic Parents During COVID-19.

Parents in academic careers face notable challenges that may go unrecognized by university management and/or policy makers. The COVID-19 pandemic has shed light on some of these challenges, as academic parents shifted to working from home while simultaneously caring for children. On the other hand, many parents found that the shift to working from home offered new opportunities such as working more flexible hours, development of digital skillsets, and increased involvement in the education of their children.

The adaptive capacity of public space under COVID-19: Exploring urban design interventions through a sociotechnical systems approach.

The coronavirus disease 2019 (COVID-19) pandemic has had a dramatic impact on the way in which the community interacts within public spaces. Consequently, the design of these urban environments requires new approaches. It is our view that Human Factors and Ergonomics approaches can be used to provide these insights.

Water exercise in coronary artery disease patients, effects on heart rate variability, and body composition: A randomized controlled trial.

Background And Purpose: It is important to assess the effectiveness and efficiency of water-based training programs in order to prescribe it as an alternative in cardiac rehabilitation for patients who have coronary artery disease (CAD). In these patients, autonomic dysfunction is an important physiological change strongly associated with adverse outcomes, morbidity, and mortality. Given that the beneficial effects of physical training in CAD patients have been traditionally evidenced with programs involving land-based aerobic exercises, this study aims to evaluate the effects of water aerobic exercise training (WAET) on the autonomic modulation of heart rate (HR) and body composition, in the rehabilitation of CAD patients.

The coffee leaf rust pathogen Hemileia vastatrix: one and a half centuries around the tropics.

Taxonomy And History: Hemileia vastatrix Berk. and Broome (Basidiomycota, Pucciniales) was described in 1869 in eastern Africa and Ceylon as the agent of coffee leaf rust and has spread to all coffee cultivation areas worldwide. Major disease outbreaks in Asia, Africa and America caused and continue to cause severe yield losses, making this the most important disease of Arabica coffee, a cash crop for many tropical and sub-tropical countries.

The significance of cephalopod beaks in marine ecology studies: Can we use beaks for DNA analyses and mercury contamination assessment?

Cephalopod beaks found in the diet of predators have been a major source of scientific information. In this study, we evaluated the usefulness of DNA and contaminants analysis (total mercury - T-Hg) in cephalopod beaks in order to assess their applicability as tools in marine ecology studies. We concluded that, when applying DNA techniques to cephalopod beaks from Antarctic squid species, when using flesh attached to those beaks, it was possible to obtain DNA and to successfully identify cephalopod species; DNA was not found on the beaks themselves.

Feathers as a Tool to Assess Mercury Contamination in Gentoo Penguins: Variations at the Individual Level.

Feathers have been widely used to assess mercury contamination in birds as they reflect metal concentrations accumulated between successive moult periods: they are also easy to sample and have minimum impact on the study birds. Moult is considered the major pathway for mercury excretion in seabirds. Penguins are widely believed to undergo a complete, annual moult during which they do not feed.

Flow cytometry reveals that the rust fungus, Uromyces bidentis (Pucciniales), possesses the largest fungal genome reported--2489 Mbp.

Among the Eukaryotes, Fungi have relatively small genomes (average of 44.2 Mbp across 1850 species). The order Pucciniales (Basidiomycota) has the largest average genome size among fungi (305 Mbp), and includes the two largest fungal genomes reported so far (Puccinia chrysanthemi and Gymnosporangium confusum, with 806.

Characterization of the serine acetyltransferase gene family of Vitis vinifera uncovers differences in regulation of OAS synthesis in woody plants.

In higher plants cysteine biosynthesis is catalyzed by O-acetylserine(thiol)lyase (OASTL) and represents the last step of the assimilatory sulfate reduction pathway. It is mainly regulated by provision of O-acetylserine (OAS), the nitrogen/carbon containing backbone for fixation of reduced sulfur. OAS is synthesized by Serine acetyltransferase (SERAT), which reversibly interacts with OASTL in the cysteine synthase complex (CSC).

Genome size analyses of Pucciniales reveal the largest fungal genomes.

Rust fungi (Basidiomycota, Pucciniales) are biotrophic plant pathogens which exhibit diverse complexities in their life cycles and host ranges. The completion of genome sequencing of a few rust fungi has revealed the occurrence of large genomes. Sequencing efforts for other rust fungi have been hampered by uncertainty concerning their genome sizes.

Overview of the functional virulent genome of the coffee leaf rust pathogen Hemileia vastatrix with an emphasis on early stages of infection.

Hemileia vastatrix is the causal agent of coffee leaf rust, the most important disease of coffee Arabica. In this work, a 454-pyrosequencing transcriptome analysis of H. vastatrix germinating urediniospores (gU) and appressoria (Ap) was performed and compared to previously published in planta haustoria-rich (H) data.

Oral manifestations and challenges in dental treatment of epidermolysis bullosa dystrophica.

Epidermolysis bullosa (EB) is a rare congenital disease characterized by the formation of blisters following minimal trauma. Oral health can be compromised by oral bullae, perioral fibrosis, ankyloglossia, and a high risk for dental caries, all of which lead to a decreased quality of life. The purpose of this paper is to report the case of an 11-year-old female who presented with autosomal recessive dystrophic EB.

PCB bioaccumulation in three mullet species--a comparison study.

Polychlorinated biphenyls (PCBs) are lipophilic contaminants that tend to accumulate in organisms. PCBs were detected in Chelon labrosus, Liza aurata and Liza ramada, along different age groups. L.

Identification and expression of cytokinin signaling and meristem identity genes in sulfur deficient grapevine (Vitis vinifera L.).

In plants, cytokinin (CK) perception and signaling pathway is composed by a histidine kinase receptor (HK) and a response regulator (RR), the signal being mediated by a histidine phosphotransfer (HPt), as described in Arabidopsis, maize and rice. From database searches we identified in grapevine three HKs, three HPs, four A-type RRs and six B-type RRs, suggesting a common mechanism for grapevine. The phylogenetic analysis of these Vitis genes showed a variable but high degree of homology with Arabidopsis sequences.

[Study of the oral manifestations in diabetic children and their correlation variables].

Because children with type 1 diabetes (DM) are prone to diseases of the buccal cavity, in this transversal study we investigate the prevalence of dental caries, gingivitis and buccal alterations in 26 patients (16F/10M; average age: 10.3 years) from the Diabetic Children's Group at the Federal University Hospital of Santa Catarina, to verify possible correlations among the following variables: index of decayed, missing or filled permanent or deciduous teeth [DMFT or dmft], index of visible plaque [IVP], index of gum bleeding [IGB], dental calculi, gum recession, tongue abnormalities, xerostomia, burning sensation of the mucosa, age at DM diagnosis, administration of insulin; occurrence of DM-related complications; glycemia and glycosilated hemoglobin [GH]. The most frequent alterations were dental calculi (42.