Regeneration of okra (Abelmoschus esculentus L.) via apical shoot culture system

The present study was undertaken to evaluate the most suitable concentration of growth regulators for regeneration of okra (Abelmoschus esculentus L. Monech) via apical shoot culture system. The study of apical shoot culture system was found effective for regeneration of apical shoots. The okra (A. esculentus L. Monech) N-550 line evolved at R&D, Nirmal Seeds Pvt. Ltd., was used as basic material for experiment of regeneration using different auxin and cytokinin hormone combination. Nine to ten days old germinating seedlings were used for isolation of shoot tip explants, isolated shoot tips were cultured on regeneration medium, Murashige and Skoog (MS) medium supplemented with alone indole-3-butyric acid (IBA) (0.25, 0.5, 1.00, 1.5, 2.0 and 2.5 mg/L) and IBA 1.0 mg/L with naphthalene acetic acid (NAA) (0.25, 0.5, 1.00, 1.5, 2.0 and 2.5 mg/L). After regeneration, cultures were inoculated on elongation medium containing MS medium supplemented with kinetin (0.25, 0.5, 1.00, 1.5, 2.0 and 2.5 mg/L). Elongated shoots transferred to rooting medium containing MS medium supplemented with indole-3-butyric acid (IAA) (0.25, 0.5, 1.00, 1.5, 2.0 and 2.5 mg/L). Combination of 1.0 mg/L IBA and 0.5 mg/L NAA were found to be most effective for plant regeneration from apical shoot. Best shoot elongation observed in MS medium supplemented with kinetin 0.5 mg/L. Elongated shoots rooted most effectively in MS medium containing 0.5 mg/L IAA and 1.0 g activated charcoal. The success of apical shoot culture system of okra was encouraged by acclimatization of the plantlets in the field conditions.Key words: Abelmoschus esculentus, apical shoot, auxins, cytokinines, regeneratio

Do you get us? A multi-experiment, meta-analytic test of the effect of felt understanding in intergroup relations

This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record Data and materials for all studies are available on the project OSF page: https://osf.io/3ye72/?view_only=13a1c3aef3044bc78d94b6ca9c8cf05a.Felt understanding is a key determinant of positive inter-personal relations, but its role and potential benefits in intergroup relations have been neglected. In the first multi-study, pre-registered test of its intergroup effects, we manipulated intergroup felt understanding (understood vs. misunderstood by an outgroup) in six studies (N = 1195) and meta-analyzed its effects. The results in most intergroup contexts supported the prediction that feeling understood (vs. misunderstood) would lead to more positive intergroup orientations (r = 0.25) and action intentions (r = 0.12). These effects were distinct from the effects of feeling liked by an outgroup, which was also manipulated in each study. An important caveat was that the felt understanding manipulation's effect reversed when the outgroup was stereotypically low in competence, but high in warmth (older adults). Overall, the findings indicate the value of incorporating felt understanding into models of intergroup relations and how those relations can be improved

Dental caries in primary and permanent teeth in children's worldwide, 1995 to 2019: a systematic review and meta-analysis

Background: Early childhood caries (ECC) is a type of dental caries in the teeth of infants and children that is represented as one of the most prevalent dental problems in this period. Various studies have reported different types of prevalence of dental caries in primary and permanent teeth in children worldwide. However, there has been no comprehensive study to summarize the results of these studies in general, so this study aimed to determine the prevalence of dental caries in primary and permanent teeth in children in different continents of the world during a systematic review and meta-analysis. Methods: In this review study, articles were extracted by searching in the national and international databases of SID, MagIran, IranMedex, IranDoc, Cochrane, Embase, ScienceDirect, Scopus, PubMed, and Web of Science (ISI) between 1995 and December 2019. Random effects model was used for analysis and heterogeneity of studies was evaluated by using the I2 index. Data were analyzed by using the Comprehensive Meta-Analysis (Version 2) software. Findings: In this study, a total of 164 articles (81 articles on the prevalence of dental caries in primary teeth and 83 articles on the prevalence of dental caries in permanent teeth) were entered the meta-analysis. The prevalence of dental caries in primary teeth in children in the world with a sample size of 80,405 was 46.2% (95% CI: 41.6–50.8%), and the prevalence of dental caries in permanent teeth in children in the world with a sample size of 1,454,871 was 53.8% (95% CI: 50–57.5%). Regarding the heterogeneity on the basis of meta-regression analysis, there was a significant difference in the prevalence of dental caries in primary and permanent teeth in children in different continents of the world. With increasing the sample size and the year of study, dental caries in primary teeth increased and in permanent teeth decreased. Conclusion: The results of this study showed that the prevalence of primary and permanent dental caries in children in the world was found to be high. Therefore, appropriate strategies should be implemented to improve the aforementioned situation and to troubleshoot and monitor at all levels by providing feedback to hospitals

Prolonged Outbreak of Multidrug-Resistant Shigella sonnei Harboring bla(CTX-M-27) in Victoria, Australia

In Australia, cases of shigellosis usually occur in returned travelers from regions of shigellosis endemicity or in men who have sex with men. Resistance to multiple antibiotics has significantly increased in Shigella sonnei isolates and represents a significant public health concern. We investigate an outbreak of multidrug-resistant S. sonnei in Victoria, Australia. We undertook whole-genome sequencing of 54 extended-spectrum-beta-lactamase (ESBL)-producing S. sonnei isolates received at the Microbiological Diagnostic Unit Public Health Laboratory between January 2019 and March 2020. The population structure and antimicrobial resistance profiles were identified by genomic analyses, with 73 previously characterized Australian S. sonnei isolates providing context. Epidemiological data, including age and sex of the shigellosis cases, were also collected. There was a significant increase in cases of ESBL S. sonnei from July 2019. Most of the ESBL S. sonnei isolates (65%) fell within a single cluster that was predominantly comprised of male cases that were characterized by the presence of the bla CTX-M-27 gene conferring resistance to extended-spectrum cephalosporins. These isolates were also multidrug resistant, including resistance to azithromycin and co-trimoxazole and reduced susceptibility to ciprofloxacin. Our data uncovered a prolonged clonal outbreak of ESBL S. sonnei infection that was likely first introduced by returned travelers and has subsequently been circulating locally in Australia. The emergence of a local outbreak of ESBL S. sonnei with a multidrug-resistant profile, including reduced susceptibility to ciprofloxacin, represents a significant public health threat

Emergence and divergence of major lineages of Shiga-toxin-producing Escherichia coli in Australia

Shiga-toxin-producing Escherichia coli (STEC) infection is an important global cause of foodborne disease. To date however, genomics-based studies of STEC have been predominately focused upon STEC collected in the Northern Hemisphere. Here, we demonstrate the population structure of 485 STEC isolates in Australia, and show that several clonal groups (CGs) common to Australia were infrequently detected in a representative selection of contemporary STEC genomes from around the globe. Further, phylogenetic analysis demonstrated that lineage II of the global O157:H7 STEC was most prevalent in Australia, and was characterized by a frameshift mutation in flgF, resulting in the H-non-motile phenotype. Strong concordance between in silico and phenotypic serotyping was observed, along with concordance between in silico and conventional detection of stx genes. These data represent the most comprehensive STEC analysis from the Southern Hemisphere, and provide a framework for future national genomics-based surveillance of STEC in Australia

Metastasis of Solid Tumors in Bone Marrow: A Study from Northern India

The metastasis of bone marrow by the solid tumors is a sign of advanced stage of disease and poor prognosis. The aim of this study was to assess the pattern of bone marrow involvement of different solid tumors and their correlation with hematological findings. In a retrospective study we evaluated 434 aspirates and 76 biopsy sections from 124 cases of different types of solid tumors previously diagnosed on the basis of their clinical and histopathological findings. The hematological profile of the patients was done and correlated with the bone marrow findings. The study was carried out at a medical college hospital of northern India. Out of 124 cases of solid tumors 31 (25%) have metastasized to bone marrow. The highest number 25 (36%) of bone marrow involvement was seen in carcinoma prostate followed by gastric carcinoma and melanoma (25%) The least number (14.2%) cases of bone marrow metastasis were observed in endometrial carcinoma. Anemia was found the commonest (71.4%) hematological finding followed by thrombocytopenia in 45.1% cases. The bone marrow examination is an easy, convenient, sensitive and cost effective procedure for assessment of staging and monitoring of prognosis of solid tumors