Antagonistic Strain Bacillus amyloliquefaciens XZ34-1 for Controlling Bipolaris sorokiniana and Promoting Growth in Wheat

Common root rot, caused by Bipolaris sorokiniana, is one of the most prevalent diseases of wheat and has led to major declines in wheat yield and quality worldwide. Here, strain XZ34-1 was isolated from soil and identified as Bacillus amyloliquefaciens based on the morphological, physiological, biochemical characteristics and 16S rDNA sequence. Culture filtrate (CF) of strain XZ34-1 showed a high inhibition rate against B.sorokiniana and had a broad antifungal spectrum. It also remarkably inhibited the mycelial growth and spore germination of B. sorokiniana. In pot control experiments, the incidence and disease index of common root rot in wheat seedlings were decreased after treatment with CF, and the biological control efficacy was significant, up to 78.24%. Further studies showed XZ34-1 could produce antifungal bioactive substances and had the potential of promoting plant growth. Lipopeptide genes detection with PCR indicated that strain XZ34-1 may produce lipopeptides. Furthermore, activities of defense-related enzymes were enhanced in wheat seedlings after inoculation with B.sorokiniana and treatment with CF, which showed induced resistance could be produced in wheat to resist pathogens. These results reveal that strain XZ34-1 is a promising candidate for application as a biological control agent against B.sorokiniana.

The Branching Pattern of the Nervus Ischiadicus after Passing through the Foramen Ischiadicum Majus in Hasak Sheep Breed

Background: Hasak is a sheep breed, developed as a result of crossbreeding studies at Bahri Dağdaş International Agricultural Research Institute. The aim of this study was to examine the macroanatomical structure of the nervus ischiadicus outside the cavum pelvis in Hasak sheep breed. Methods: 5 Hasak sheep were used for this study. After opening the body cavities of the cadavers, they were fixed in formaldehyde solution. The branches of the nervus ischiadicus were dissected separately and photographed. Result: It was observed that nervus ischiadicus was emitting nervus gluteus caudalis immediately after leaving the foramen ischiadicum majus. After this branching nervus ischiadicus coursed ventrally and it was divided into two nerves: nervus tibialis and the common root of nervus peroneus communis and nervus cutaneus surae caudalis.

Supersingular j-invariants and the class number of ℚ(−p)

Let [Formula: see text] be a prime. Let [Formula: see text] be the discriminant of an imaginary quadratic order. Assume that [Formula: see text] and [Formula: see text]. We compute the number of [Formula: see text]-roots of the class polynomials [Formula: see text]. Suppose [Formula: see text], we prove that two class polynomials [Formula: see text] and [Formula: see text] have a common root in [Formula: see text] if and only if [Formula: see text] is a perfect square. Furthermore, any three class polynomials do not have a common root in [Formula: see text]. As an application, we propose a deterministic algorithm for computing the class number of [Formula: see text].

Energy Protests and Citizen Voice

Recent years have seen energy protests erupt in many countries around the world. Globally, countries are wrestling with the need to achieve a just transition away from fossil fuels while at the same time ensuring access to affordable energy. Protests often have a common root cause: the undemocratic nature of energy policymaking. This Policy Briefing describes findings from research conducted in Mozambique, Nigeria, and Pakistan, as well as from a global, cross-country study, and the insights from an International Roundtable. It asks how and under which conditions do struggles over energy in fragile and conflict-affected settings empower citizens to hold public authorities to account?

OMEX metadata specification (version 1.2)

A standardized approach to annotating computational biomedical models and their associated files can facilitate model reuse and reproducibility among research groups, enhance search and retrieval of models and data, and enable semantic comparisons between models. Motivated by these potential benefits and guided by consensus across the COmputational Modeling in BIology NEtwork (COMBINE) community, we have developed a specification for encoding annotations in Open Modeling and EXchange (OMEX)-formatted archives. This document details version 1.2 of the specification, which builds on version 1.0 published last year in this journal. In particular, this version includes a set of initial model-level annotations (whereas v 1.0 described exclusively annotations at a smaller scale). Additionally, this version uses best practices for namespaces, and introduces omex-library.org as a common root for all annotations. Distributing modeling projects within an OMEX archive is a best practice established by COMBINE, and the OMEX metadata specification presented here provides a harmonized, community-driven approach for annotating a variety of standardized model representations. This specification acts as a technical guideline for developing software tools that can support this standard, and thereby encourages broad advances in model reuse, discovery, and semantic analyses.

Surveillance of laboratory exposures to human pathogens and toxins, Canada 2020

Background: The Laboratory Incident Notification Canada surveillance system monitors laboratory incidents reported under the Human Pathogens and Toxins Act and the Human Pathogens and Toxins Regulations. The objective of this report is to describe laboratory exposures that were reported in Canada in 2020 and the individuals who were affected. Methods: Laboratory incident exposures occurring in licensed Canadian laboratories in 2020 were analyzed. The exposure incident rate was calculated and the descriptive statistics were performed. Exposure incidents were analyzed by sector, activity type, occurrence type, root cause and pathogen/toxin. Affected persons were analyzed by education, route of exposure sector, role and laboratory experience. The time between the incident and the reporting date was also analyzed. Results: Forty-two incidents involving 57 individuals were reported to Laboratory Incident Notification Canada in 2020. There were no suspected or confirmed laboratory acquired infections. The annual incident exposure rate was 4.2 incidents per 100 active licenses. Most exposure incidents occurred during microbiology activities (n=22, 52.4%) and/or were reported by the hospital sector (n=19, 45.2%). Procedural issues (n=16, 27.1%) and sharps-related incidents (n=13, 22.0%) were the most common occurrences. Most affected individuals were exposed via inhalation (n=28, 49.1%) and worked as technicians or technologists (n=36, 63.2%). Issues with standard operating procedures was the most common root cause (n=24, 27.0%), followed by human interactions (n=21, 23.6%). The median number of days between the incident and the reporting date was six days. Conclusion: The rate of laboratory incidents were lower in 2020 than 2019, although the ongoing pandemic may have contributed to this decrease because of the closure of non-essential workplaces, including laboratories, for a portion of the year. The most common occurrence type was procedural while issues with not complying to standard operating procedures and human interactions as the most cited root causes.

Hacia una edición crítica y estudio de los cuentos de Mauricio Magdaleno: El ardiente verano y otros cuentos

Currently, a complete critical edition must not only be accompanied by a rigorous textual criticism but also by a genetic edition that considers all the testimonies. In this sense, this work analyzes some of the problems that could occur if we publish a critical edition the entirety of Mauricio Magdaleno’s short stories. There would be two important problems: first, the fact that most of the stories, as we know them today, had previous versions published in periodical sources, which would oblige us to make an exhaustive investigation and to gather and collate the texts from the varied hemerographic testimonies; second, the decision of any criterion that allows overcoming the generic border between a story written from a personal anecdote and a short story that can be included in our edition. Thus, both problems have as a common root: Magdaleno was a journalist and supplemented his journalistic career with other activities that served as material support. A critical edition of Mauricio Magdaleno’s short stories would be a good reading of his work, and we could know about the author’s creative process, which would help to overcome the anachronistic criticism that has been published on the topic. Finally, and based on the current status, we propose a table with the versions of the short stories found and another table with a proposal supported by a possible index of the short stories that would make up the critical edition.

Soybean Root-Knot Nematode: A Diagnostic Guide

Root-knot nematodes (Meloidogyne spp.) are one of the most economically important plant parasites in the world, and significantly impacts soybean production in places where they are endemic. Several species of root-knot nematode are capable of causing significant damages to soybean and have broad host ranges that include common rotational crops and weeds. Symptoms of root-knot nematode infections may be confused with other diseases, nutritional disorders, or common root features associated with legumes. The purpose of this diagnostic guide is to provide information regarding identification, isolation, storage, and other relevant aspects of this pathosystem.

Finding Polluter Tests Using Java PathFinder

Tests that modify (i.e., "pollute") the state shared among tests in a test suite are called \polluter tests". Finding these tests is im- portant because they could result in di erent test outcomes based on the order of the tests in the test suite. Prior work has proposed the PolDet technique for nding polluter tests in runs of JUnit tests on a regular Java Virtual Machine (JVM). Given that Java PathFinder (JPF) provides desirable infrastructure support, such as systematically exploring thread schedules, it is a worthwhile attempt to re-implement techniques such as PolDet in JPF. We present a new implementation of PolDet for nding polluter tests in runs of JUnit tests in JPF. We customize the existing state comparison in JPF to support the so-called \common-root iso- morphism" required by PolDet. We find that our implementation is simple, requiring only -200 lines of code, demonstrating that JPF is a sophisticated infrastructure for rapid exploration of re-search ideas on software testing. We evaluate our implementation on 187 test classes from 13 Java projects and nd 26 polluter tests. Our results show that the runtime overhead of PolDet@JPF com- pared to base JPF is relatively low, on average 1.43x. However, our experiments also show some potential challenges with JPF.