Evsey Kosman
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View article: Structural Variability of the Wheat Leaf Rust Pathogen <i>Puccinia triticina</i> in Russia in 2019–2024
Structural Variability of the Wheat Leaf Rust Pathogen <i>Puccinia triticina</i> in Russia in 2019–2024 Open
The structural analysis of the Russian Puccinia triticina population based on a virulence survey during 2019–2024 is presented. The studied areas included the European (North West, Volga, North Caucasus and Dagestan) and Asian (Ural, West …
View article: Long‐Term Studies of <scp> <i>Puccinia coronata</i> </scp> f. sp. <scp> <i>avenae</i> </scp> in Australia Reveal High Pathogenic Diversity, Regional Virulence Differences, Evidence of Clonality and Rapid Emergence of Virulence Matching Deployed Host Resistance
Long‐Term Studies of <span> <i>Puccinia coronata</i> </span> f. sp. <span> <i>avenae</i> </span> in Australia Reveal High Pathogenic Diversity, Regional Virulence Differences, Evidence of Clonality and Rapid Emergence of Virulence Matching Deployed Host Resistance Open
Long‐term, detailed Australia‐wide studies of pathogenic variability in Puccinia coronata f. sp. avenae (Pca) were conducted from 1 April 1998 to 31 March 2024, along with analysing crown rust resistance in oat cultivars grown to examine i…
View article: The units of biodiversity
The units of biodiversity Open
Biodiversity is a central concept in ecology and biology. Its underpinnings are multifaceted and complex and involve multiple spatiotemporal scales, and many ways of measuring relevant characteristics. Its comprehensive understanding requi…
View article: Effective number of different populations: A new concept and how to use it
Effective number of different populations: A new concept and how to use it Open
Widely used methods to assess population genetic structure and differentiation rely on independence of marker loci. Following the assumption, the common metrics, for example F ST , evaluate genetic structure by averaging across loci. Commo…
View article: Virulence variation of Israeli populations of Puccinia graminis f. sp. tritici during the period 2009 – 2019
Virulence variation of Israeli populations of Puccinia graminis f. sp. tritici during the period 2009 – 2019 Open
This paper is dedicated to the memory of the APS Fellow Prof. Yehoshua Anikster (1934 -2023). A total of 336 urediniospore isolates of Puccinia graminis f. sp. tritici ( Pgt ) were derived from samples collected in Israel from 2009 to 2019…
View article: Effective number of different populations: a new concept and how to use it
Effective number of different populations: a new concept and how to use it Open
1. Widely used methods to assess population genetic structure and differentiation rely on independence of marker loci. Following the assumption, the common metrics, for example FST, evaluate genetic structure by averaging across loci. Comm…
View article: Virulence variation of Israeli populations of Puccinia graminis f. sp. tritici during the period 2009 – 2019
Virulence variation of Israeli populations of Puccinia graminis f. sp. tritici during the period 2009 – 2019 Open
This paper is dedicated to the memory of the APS Fellow Prof. Yehoshua Anikster (1934 -2023). A total of 336 urediniospore isolates of Pucciniagraminis f. sp. tritici (Pgt) were derived from samples collected in Israel from 2009 to 2019 an…
View article: Virulence Diversity of Puccinia striiformis f. sp. Tritici in Common Wheat in Russian Regions in 2019–2021
Virulence Diversity of Puccinia striiformis f. sp. Tritici in Common Wheat in Russian Regions in 2019–2021 Open
Yellow (stripe) rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a major disease of common wheat worldwide. Disease epidemics in Russia have been frequent and destructive, mostly in the North Caucasus. However, over the last 5…
View article: Analysis of Host-Specific Differentiation of Puccinia striiformis in the South and North-West of the European Part of Russia
Analysis of Host-Specific Differentiation of Puccinia striiformis in the South and North-West of the European Part of Russia Open
Yellow (stripe) rust, caused by Puccinia striiformis Westend. (Pst), is a major disease of cereals worldwide. We studied Pst virulence phenotypes on Triticum aestivum, Triticum durum, and triticale in three geographically distant regions o…
View article: Coherence in (meta)community networks
Coherence in (meta)community networks Open
In a general sense, a metacommunity can be considered as a network of communities, the coherence of which is based on characteristics that are shared by members of different communities, whatever forces were responsible (dispersal, migrati…
View article: Beta redundancy for functional ecology
Beta redundancy for functional ecology Open
Functional beta redundancy has been recently defined as the fraction of species dissimilarity between two plots not expressed by functional dissimilarity. As such, it summarizes to what degree the compositional differences between two plot…
View article: Severe limitations of the FEve metric of functional evenness and some alternative metrics
Severe limitations of the FEve metric of functional evenness and some alternative metrics Open
The metric of functional evenness FEve is an example of how approaches to conceptualizing and measuring functional variability may go astray. This index has several critical conceptual and practical drawbacks: Different values of the FEve …
View article: Stem Endophytic Mycobiota in Wild and Domesticated Wheat: Structural Differences and Hidden Resources for Wheat Improvement
Stem Endophytic Mycobiota in Wild and Domesticated Wheat: Structural Differences and Hidden Resources for Wheat Improvement Open
Towards the identification of entophytic fungal taxa with potential for crop improvement, we characterized and compared fungal endophyte communities (FECs) from domesticated bread wheat and two wheat ancestors, Aegilopssharonensis and Trit…
View article: Severe limitations of the FEve metric of functional evenness and some alternative metrics
Severe limitations of the FEve metric of functional evenness and some alternative metrics Open
1. The metric of functional evenness FEve is an example of how approaches to conceptualizing and measuring functional variability may go astray. 2. The index of functional evenness FEve has critical conceptual and practical drawbacks: a) D…
View article: Virulence Phenotypes of Siberian Wheat Stem Rust Population in 2017–2018
Virulence Phenotypes of Siberian Wheat Stem Rust Population in 2017–2018 Open
Management of wheat stem rust in Western Siberia has gained importance since the first outbreaks in 2007–2010 and 2016. The race composition and virulence patterns were investigated for the enlarged Puccinia graminis f. sp. tritici (Pgt) s…
View article: Diversity of virulence phenotypes among annual populations of <i>Puccinia triticina</i> originating from common wheat in Israel during the period 2000–15
Diversity of virulence phenotypes among annual populations of <i>Puccinia triticina</i> originating from common wheat in Israel during the period 2000–15 Open
Leaf rust, caused by the fungus Puccinia triticina , is the most common rust disease of wheat in wheat‐producing areas worldwide. The Israeli population of P. triticina has been consistently monitored since 1993. A total of 784 single ured…
View article: Measuring similarity between gene interaction profiles
Measuring similarity between gene interaction profiles Open
This repository contains the following: Original genetic interaction score matrices for the genes. Also contains a binarized version of this data based on a threshold of 0.05, for use in the binary distance measures. The distance measure m…
View article: Measuring similarity between gene interaction profiles
Measuring similarity between gene interaction profiles Open
This repository contains the following: Original genetic interaction score matrices for the genes. Also contains a binarized version of this data based on a threshold of 0.05, for use in the binary distance measures. The distance measure m…
View article: Measuring similarity between gene interaction profiles
Measuring similarity between gene interaction profiles Open
This repository contains the following: Original genetic interaction score matrices for the genes. Also contains a binarized version of this data based on a threshold of 0.05, for use in the binary distance measures. The distance measure m…
View article: Conservation prioritization based on trait‐based metrics illustrated with global parrot distributions
Conservation prioritization based on trait‐based metrics illustrated with global parrot distributions Open
Aim Conservation planning and prioritization generally have focused on protecting taxa based on assessments of their long‐term persistence or on protecting habitats and sites with high species richness. An implicit assumption of these appr…
View article: Functional Variation of Plant–Pathogen Interactions: New Concept and Methods for Virulence Data Analyses
Functional Variation of Plant–Pathogen Interactions: New Concept and Methods for Virulence Data Analyses Open
Classical virulence analysis is based on discovering virulence phenotypes of isolates with regard to a composition of resistance genes in a differential set of host genotypes. With such a vision, virulence phenotypes are usually treated in…
View article: Dissimilarity of individual microsatellite profiles under different mutation models: Empirical approach
Dissimilarity of individual microsatellite profiles under different mutation models: Empirical approach Open
Microsatellites (simple sequence repeats, SSRs) still remain popular molecular markers for studying neutral genetic variation. Two alternative models outline how new microsatellite alleles evolve. Infinite alleles model (IAM) assumes that …
View article: The components of biodiversity, with a particular focus on phylogenetic information
The components of biodiversity, with a particular focus on phylogenetic information Open
We present a framework for biodiversity metrics that organizes the growing panoply of metrics. Our framework distinguishes metrics based on the type of information–abundance, phylogeny, function–and two common properties–magnitude and vari…
View article: Decomposing functional diversity
Decomposing functional diversity Open
Summary One aspect of biodiversity, functional diversity, reflects the functional role of species within a community as measured by species characteristics. We present a new metric, functional trait dispersion, based on the concept of spec…
View article: On the notion of dispersion: from dispersion to diversity
On the notion of dispersion: from dispersion to diversity Open
Summary Dispersion and diversity are two variants of the notion of biological variation that are often not properly distinguished even though they address intrinsically disparate aspects. Dispersion focuses on the assessment of (variable) …