Phyllosticta citricarpa and sister species of global importance to Citrus.

Several Phyllosticta species are known as pathogens of Citrus spp., and are responsible for various disease symptoms including leaf and fruit spots. One of the most important species is P. citricarpa, which causes a foliar and fruit disease called citrus black spot. The Phyllosticta species occurring on citrus can most effectively be distinguished from P. citricarpa by means of multilocus DNA sequence data. Recent studies also demonstrated P. citricarpa to be heterothallic, and reported successful mating in the laboratory. Since the domestication of citrus, different clones of P. citricarpa have escaped Asia to other continents via trade routes, with obvious disease management consequences. This pathogen profile represents a comprehensive literature review of this pathogen and allied taxa associated with citrus, focusing on identification, distribution, genomics, epidemiology and disease management. This review also considers the knowledge emerging from seven genomes of Phyllosticta spp., demonstrating unknown aspects of these species, including their mating behaviour.TaxonomyPhyllosticta citricarpa (McAlpine) Aa, 1973. Kingdom Fungi, Phylum Ascomycota, Class Dothideomycetes, Order Botryosphaeriales, Family Phyllostictaceae, Genus Phyllosticta, Species citricarpa.Host rangeConfirmed on more than 12 Citrus species, Phyllosticta citricarpa has only been found on plant species in the Rutaceae.Disease symptomsP. citricarpa causes diverse symptoms such as hard spot, virulent spot, false melanose and freckle spot on fruit, and necrotic lesions on leaves and twigs.Useful websitesDOE Joint Genome Institute MycoCosm portals for the Phyllosticta capitalensis (https://genome.jgi.doe.gov/Phycap1), P. citriasiana (https://genome.jgi.doe.gov/Phycit1), P. citribraziliensis (https://genome.jgi.doe.gov/Phcit1), P. citrichinaensis (https://genome.jgi.doe.gov/Phcitr1), P. citricarpa (https://genome.jgi.doe.gov/Phycitr1, https://genome.jgi.doe.gov/Phycpc1), P. paracitricarpa (https://genome.jgi.doe.gov/Phy27169) genomes. All available Phyllosticta genomes on MycoCosm can be viewed at https://genome.jgi.doe.gov/Phyllosticta

Rural waste generation: a geographical survey at local scale

"The paper examines the per capita waste generation rates from from rural areas of Neamț County (Romania) using thematic cartography. Geographical approach of this issue is difficult because the lack of a geostatistic database at commune scale. Spatial analysis of waste indicators reveals several disparities between localities. Comparability of data between communes located in various geographical conditions must be carrefully made according to local waste management systems. Several dysfunctionalities are outlined in order to compare these results, on the one hand, between localities and on the one hand, between recent years. Geographical analysis of waste generation rates is imperative for a proper monitoring of this sector. Data from 2009, 2010 and 2012 shows that rural waste management is in a full process of change towards a more organized, stable and efficient system." (author's abstract

The global atmospheric electrical circuit and climate

Evidence is emerging for physical links among clouds, global temperatures, the global atmospheric electrical circuit and cosmic ray ionisation. The global circuit extends throughout the atmosphere from the planetary surface to the lower layers of the ionosphere. Cosmic rays are the principal source of atmospheric ions away from the continental boundary layer: the ions formed permit a vertical conduction current to flow in the fair weather part of the global circuit. Through the (inverse) solar modulation of cosmic rays, the resulting columnar ionisation changes may allow the global circuit to convey a solar influence to meteorological phenomena of the lower atmosphere. Electrical effects on non-thunderstorm clouds have been proposed to occur via the ion-assisted formation of ultra-fine aerosol, which can grow to sizes able to act as cloud condensation nuclei, or through the increased ice nucleation capability of charged aerosols. Even small atmospheric electrical modulations on the aerosol size distribution can affect cloud properties and modify the radiative balance of the atmosphere, through changes communicated globally by the atmospheric electrical circuit. Despite a long history of work in related areas of geophysics, the direct and inverse relationships between the global circuit and global climate remain largely quantitatively unexplored. From reviewing atmospheric electrical measurements made over two centuries and possible paleoclimate proxies, global atmospheric electrical circuit variability should be expected on many timescale

Better outcomes for unaccompanied or separated children seeking asylum: a case of putting one’s money where one’s mouth is?

This article considers the accommodation and care of unaccompanied or separated children who seek asylum in the United Kingdom, currently administered by children's services authorities under the Children Act 1989, in light of recent Government plans to disperse them to specialist local authorities outside London and the south-east of England

“Gay couple’s break like Fawlty Towers”: dangerous representations of lesbian and gay oppression in an era of ‘progressive’ law reform

This article considers the production of knowledge around the discursively constructed sexual subject in light of the politico-cultural debates that ensued during the enactment of the controversial Equality Act (Sexual Orientation) Regulations 2007. Exploring the rise, during the course of these debates, of what it terms the “bed and breakfast paradigm” of lesbian and gay oppression, the article questions the extent to which that paradigm provides a representative account of housing-related discrimination experienced by lesbians and gay men. It goes on to criticise the silence that, conversely, surrounds intra-familial discrimination experienced by young lesbians and gay men at the hands of their parents within the home; a consequence of law’s power to define the parameters of discourse around anti-discrimination protections according to an implicit public/private binary

Taxonomies of squatting: unlawful occupation in a new legal order

Legal responses to the activity of 'squatting' include criminal justice, civil actions, property law and housing policy. Some legal analyses of unauthorised occupation focus on the act of squatting, others on the squatter's claim to title through adverse possession. This paper explores recent developments in the law of adverse possession which have been shaped by particular discursive constructions of both squatters and dispossessed landowners. It develops a 'taxonomy of squatting' by mapping the positions adopted by the Law Commission, the legislature and various domestic and European courts, in respect of moral issues thrown up by the doctrine of adverse possession, including the distinction between good faith and bad faith squatting, the landowner's duty of stewardship, and the question of compensation. By unpacking the circumstances in which squatting occurs, the paper develops a series of matrices to classify legal responses to unlawful occupation and to facilitate a more systematic and coherent understanding of law's responses to squatting