scholarly journals Plant Virus and Virus-like Disease Threats to Australia’s North Targeted by the Northern Australia Quarantine Strategy

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2175
Author(s):  
Richard I. Davis ◽  
Lynne M. Jones ◽  
Bradley Pease ◽  
Sandy L. Perkins ◽  
Harshitsinh R. Vala ◽  
...  
Keyword(s):  
Plant Virus ◽  
Collaborative Work ◽  
Plant Viruses ◽  
Species Group ◽  
Review Article ◽  
Northern Australia ◽  
Department Of Agriculture ◽  
The North ◽  
Populated Region ◽  
Agriculture Water

The Northern Australia Quarantine Strategy (NAQS) is a biosecurity initiative operated by the Australian federal government’s Department of Agriculture, Water and the Environment (DAWE). It is unique worldwide because it deals specifically with the potential arrival via unregulated pathways of exotic threats from overseas in a vast and sparsely populated region. It aims to protect the nation’s animal- and plant-based production industries, as well as the environment, from incursions of organisms from countries that lie immediately to the north. These are diseases, pests, and weeds present in these countries that are currently either absent from, or under active containment in, Australia and may arrive by natural or human-assisted means. This review article focuses on the plant viruses and virus-like diseases that are most highly targeted by the NAQS program. It presents eight pathogen species/group entries in the NAQS A list of target pathogens, providing an overview of the historical and current situation, and collates some new data obtained from surveillance activities conducted in northern Australia and collaborative work overseas.

Discriminatory Taxation in Light of Fortescue: Its Implications for the Development of Northern Australia

2014 ◽  
Vol 42 (1) ◽  
pp. 1-23
Author(s):  
Anthony Gray
Keyword(s):  
Federal Government ◽  
Court Decision ◽  
Northern Australia ◽  
High Court ◽  
The North ◽  
Northern Regions ◽  
Word Discrimination ◽  
Taxation System

In the recent Fortescue decision, the High Court made some interesting observations regarding interpretation of the word ‘discrimination’ in the context of the Federal Government's power with respect to taxation in s 51(2) of the Australian Constitution. Coincidentally, the Federal Government has commenced consideration of options for the development of northern regions of Australia. Of course, one option would be to introduce a variable taxation system to encourage businesses and individuals to be based, and/or invest, in northern Australia. This article considers possible constitutional issues associated with variable taxation schemes overtly favouring businesses and individuals based in the ‘north’, given the recent High Court decision.

scholarly journals Softening of Processed Plant Virus Infected Cucumis sativus Fruits

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1451
Author(s):  
Anne-Katrin Kersten ◽  
Sabrina Scharf ◽  
Martina Bandte ◽  
Peer Martin ◽  
Peter Meurer ◽  
...  
Keyword(s):  
Cucumis Sativus ◽  
Plant Virus ◽  
Plant Viruses ◽  
Economic Losses ◽  
Symptom Expression ◽  
Considerable Influence ◽  
Mechanical Inoculation ◽  
Morphological Alterations ◽  
Texture Properties ◽  
Textural Changes

Texture softening of pickled cucumbers does not meet consumers’ quality expectations and leads to economic losses. The factor(s) triggering this phenomenon is still unknown. We investigated the importance of plant viruses such as Cucumber green mottle mosaic tobamovirus (CGMMV) and Zucchini yellow mosaic potyvirus (ZYMV) in the context of softening of pickles. Cucumber plants (Cucumis sativus) were infected by mechanical inoculation, grown under greenhouse conditions and tested positive for the viral infection by ELISA. The severity of virus infection was reflected in yield and symptom expression. Histological and morphological alterations were observed. All fruits were pasteurized, separately stored in jars and subjected to texture measurements after four, six and 12 months. CGMMV-infections were asymptomatic or caused mild symptoms on leaves and fruit, and texture quality was comparable to control. At the same time, fruits of ZYMV-infected plants showed severe symptoms like deformations and discoloration, as well as a reduction in firmness and crunchiness after pasteurization. In addition, histological alterations were detected in such fruits, possibly causing textural changes. We conclude that plant viruses could have a considerable influence on the firmness and crunchiness of pickled cucumbers after pasteurization. It is possible that the severity of symptom expression has an influence on texture properties.

scholarly journals Novel Functional Genomics Approaches: A Promising Future in the Combat Against Plant Viruses

2016 ◽  
Vol 106 (10) ◽  
pp. 1231-1239 ◽  
Author(s):  
Vincent N. Fondong ◽  
Ugrappa Nagalakshmi ◽  
Savithramma P. Dinesh-Kumar
Keyword(s):  
Functional Genomics ◽  
Plant Virus ◽  
Reverse Genetics ◽  
Plant Viruses ◽  
Micro Rna ◽  
Viral Genomes ◽  
Virus Control ◽  
Local Lesions ◽  
Short Palindromic Repeat ◽  
Interfering Rna

Advances in functional genomics and genome editing approaches have provided new opportunities and potential to accelerate plant virus control efforts through modification of host and viral genomes in a precise and predictable manner. Here, we discuss application of RNA-based technologies, including artificial micro RNA, transacting small interfering RNA, and Cas9 (clustered regularly interspaced short palindromic repeat–associated protein 9), which are currently being successfully deployed in generating virus-resistant plants. We further discuss the reverse genetics approach, targeting induced local lesions in genomes (TILLING) and its variant, known as EcoTILLING, that are used in the identification of plant virus recessive resistance gene alleles. In addition to describing specific applications of these technologies in plant virus control, this review discusses their advantages and limitations.

Review article: Reclaiming the rebellion: 1798 in 1998

1999 ◽  
Vol 31 (123) ◽  
pp. 395-410
Author(s):  
Ian McBride
Keyword(s):  
New York ◽  
Rural Communities ◽  
Review Article ◽  
Physical Force ◽  
Celtic Tiger ◽  
Men And Women ◽  
International Dimension ◽  
Good Friday ◽  
The North ◽  
The Many

Few Irish men and women can have escaped the mighty wave of anniversary fever which broke over the island in the spring of 1998. As if atoning for the failed rebellion itself, the bicentenary of 1798 was neither ill-coordinated nor localised, but a genuinely national phenomenon produced by years of planning and organisation. Emissaries were dispatched from Dublin and Belfast to remote rural communities, and the resonant names of Bartlett, Whelan, Keogh and Graham were heard throughout the land; indeed, the commemoration possessed an international dimension which stretched to Boston, New York, Toronto, Liverpool, London and Glasgow. In bicentenary Wexford — complete with ’98 Heritage Trail and ’98 Village — the values of democracy and pluralism were triumphantly proclaimed. When the time came, the north did not hesitate, but participated enthusiastically. Even the French arrived on cue, this time on bicycle. Just as the 1898 centenary, which contributed to the revitalisation of physical-force nationalism, has now become an established subject in its own right, future historians will surely scrutinise this mother of all anniversaries for evidence concerning the national pulse in the era of the Celtic Tiger and the Good Friday Agreement. In the meantime a survey of some of the many essay collections and monographs published during the bicentenary will permit us to hazard a few generalisations about the current direction of what might now be termed ‘Ninety-Eight Studies’.

LUCERNE IN THE WELLINGTON, TARANAKI, AND EAST COAST DISTRICTS

1936 ◽  
pp. 92-95
Author(s):  
A.G. Elliott ◽  
T.W. Lonsdale
Keyword(s):  
New Zealand ◽  
West Coast ◽  
East Coast ◽  
General Trend ◽  
Present Position ◽  
Department Of Agriculture ◽  
Forage Crop ◽  
High Rainfall ◽  
The North ◽  
Subsequent Discussion

IN two papers read by officers of the Department of Agriculture at the 1936 conference of the New Zealand Grassland Association, the growing of lucernc as a forage crop in districts of relatively high rainfall was dealt with. The area covered by the papers included the Manawatu and west coast from Paraparaumu to the Patea River(I) and Taranaki(n). During the subsequent discussion on these and other papers the present position and general trend in regard to lucernegrowing in the Wairarapa, Eiawke's Eay, and Poverty Bay districts were also touched on. It is the intention here. to review briefly some of the more important points in regard to the cultivation of lucerne in the southern portion of the North Island as discussed at the conference.

scholarly journals A GIS-Based Approach to Inform Agriculture-Water-Energy Nexus Planning in the North Western Sahara Aquifer System (NWSAS)

2020 ◽  
Vol 12 (17) ◽  
pp. 7043 ◽  
Author(s):  
Youssef Almulla ◽  
Camilo Ramirez ◽  
Konstantinos Pegios ◽  
Alexandros Korkovelos ◽  
Lucia de Strasser ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Mathematical Formulation ◽  
Western Sahara ◽  
Aquifer System ◽  
Water Abstraction ◽  
The North ◽  
Groundwater Source ◽  
Water Scarce ◽  
North Western ◽  
Agriculture Water

The North Western Sahara Aquifer System (NWSAS) is a vital groundwater source in a notably water-scarce region. However, impetuous agricultural expansion and poor resource management (e.g., over-irrigation, inefficient techniques) over the past decades have raised a number of challenges. In this exploratory study, we introduce an open access GIS-based model to help answer selected timely questions related to the agriculture, water and energy nexus in the region. First, the model uses spatial and tabular data to identify the location and extent of irrigated cropland. Then, it employs spatially explicit climatic datasets and mathematical formulation to estimate water and electricity requirements for groundwater irrigation in all identified locations. Finally, it evaluates selected supply options to meet the electricity demand and suggests the least-cost configuration in each location. Results indicate that full irrigation in the basin requires ~3.25 billion million m3 per year. This translates to ~730 GWh of electricity. Fossil fuels do provide the least-cost electricity supply option due to lower capital and subsidized operating costs. Hence, to improve the competitiveness of renewable technologies (RT) (i.e., solar), a support scheme to drop the capital cost of RTs is critically needed. Finally, moving towards drip irrigation can lead to ~47% of water abstraction savings in the NWSAS area.

scholarly journals Niche differentiation and regeneration in the seasonally flooded Melaleuca forests of northern Australia

2007 ◽  
Vol 23 (4) ◽  
pp. 457-467 ◽  
Author(s):  
Donald C. Franklin ◽  
Peter S. Brocklehurst ◽  
Dominique Lynch ◽  
David M. J. S. Bowman
Keyword(s):  
Basal Area ◽  
Niche Differentiation ◽  
Floodplain Forests ◽  
Northern Australia ◽  
Closely Related Species ◽  
The North ◽  
Wide Range ◽  
Using Data ◽  
Seasonally Flooded ◽  
Burnt Areas

Gallery and floodplain forests in monsoonal northern Australia are mostly sclerophyllous and dominated by five closely related species of Melaleuca (Myrtaceae) amongst which niche differentiation is unclear. We present a floristic and environmental analysis of ‘the flooded forest’ using data from 340 plots distributed across 450 000 km2 of the Top End of the Northern Territory. Melaleuca argentea was confined to streams and occurred on sandier substrates, whereas M. cajuputi mostly occurred in the near-coastal lowlands on clay soils. The greater basal area of M. cajuputi suggests an association with productive sites. Melaleuca dealbata, M. viridiflora and M. leucadendra occurred on a wide range of soils. More deeply floodprone sites were occupied by M. argentea and M. leucadendra along streams and by M. leucadendra and M. cajuputi on floodplains and in swamps. A general deficiency but occasional abundance of Melaleuca seedlings suggests that regeneration is episodic. Seedlings were more frequent in recently burnt areas and especially where fires had been severe. We propose that Melaleuca forests occur where disturbance by fire and/or floodwater is too great for rain forest to persist, rendering them the wetland analogue to the eucalypts that dominate well-drained portions of the north Australian environment.

Redescription of the milliped Myrmecodesmus mundus (Chamberlin) (Polydesmida: Pyrgodesmidae)

Zootaxa ◽  
2002 ◽  
Vol 115 (1) ◽  
pp. 1
Author(s):  
ROWLAND M. SHELLEY
Keyword(s):  
Species Group ◽  
High Magnification ◽  
Type Specimens ◽  
Separate Species ◽  
The North ◽  
Anterior Branch

Myrmecodesmus mundus (Chamberlin, 1943), a minute pygrodesmid milliped from Veracruz, Mexico, is redescribed with high magnification drawings of the gonopods of the type specimens. Significant differences appear to exist between the gonopods of the holotype and paratypes, and the latter may warrant recognition as a separate species. The basic gonopodal pattern is similar to that of an undescribed, small-bodied congener occurring some 800 mi (1,280 km) to the north in Texas, USA, and the species appear to be related. The general features of a species group of Myrmecodesmus may be beginning to emerge small-bodied forms with curvilinear telopodites, with or without elaborations, and divided prefemoral processes in which the caudal or anterior branch may be lost. The name Eirenyma Chamberlin, 1943, is available for such an entity.

scholarly journals Recent Advances in the Use of Plant Virus-Like Particles as Vaccines

Viruses ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 270 ◽  
Author(s):  
Ina Balke ◽  
Andris Zeltins
Keyword(s):  
Plant Virus ◽  
Plant Viruses ◽  
Therapeutic Vaccines ◽  
Virus Like Particles ◽  
Wide Range ◽  
Central Elements ◽  
Different Types ◽  
Anticancer Vaccines ◽  
Effective Public Health ◽  
Near Future

Vaccination is one of the most effective public health interventions of the 20th century. All vaccines can be classified into different types, such as vaccines against infectious diseases, anticancer vaccines and vaccines against autoimmune diseases. In recent decades, recombinant technologies have enabled the design of experimental vaccines against a wide range of diseases using plant viruses and virus-like particles as central elements to stimulate protective and long-lasting immune responses. The analysis of recent publications shows that at least 97 experimental vaccines have been constructed based on plant viruses, including 71 vaccines against infectious agents, 16 anticancer vaccines and 10 therapeutic vaccines against autoimmune disorders. Several plant viruses have already been used for the development of vaccine platforms and have been tested in human and veterinary studies, suggesting that plant virus-based vaccines will be introduced into clinical and veterinary practice in the near future.

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