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Scooped by Knapco onto Plant health |
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Diseases caused by aphid-transmitted viruses such as Alfalfa mosaic virus (AMV) and Cucumber mosaic virus (CMV) have increased in snap bean (Phaseolus vulgaris) in the Midwestern United States. Plants immediately surrounding agricultural fields may serve as primary virus inocula for aphids to acquire and transmit to bean crops.
Plant Disease, Volume 96, Issue 4, Page 506-514, April 2012.
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Nunes CC & Dean RA (Molecular Plant Pathology, 2011, BSPP and Blackwell Publishing Ltd): Host-induced gene silencing is discussed as a tool for understanding fungal host interaction and developing disease control strategies. Recent discoveries regarding small RNAs and the mechanisms of gene silencing are providing new opportunities to explore fungal pathogen–host interactions and potential strategies for novel disease control. Plant pathogenic fungi are a constant and major threat to global food security; they represent the largest group of disease-causing agents on crop plants on the planet. Plant–fungus interactions are included in recent studies of invading pathogenic fungi, such as Fusarium verticillioides, Blumeria graminis and Puccinia striiformis f.sp. tritici. The authors highlight the important general aspects of RNA silencing mechanisms and emphasize recent findings from plant pathogenic fungi, strategies to employ RNA silencing and address important aspects for the development of fungal-derived resistance through the expression of silencing constructs in host plants as a powerful strategy to control fungal disease. DOI: 10.1111/j.1364-3703.2011.00766.x Delete the scoop?
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Agriculture scientist Dr Matthew Cock, chief scientist for Cabi, a UK-based agri-environment research organisation, lists some of the biggest biological threats to global food security.
Pests like desert locust, western corn root worm (Diabrotica virgifera virgifera), the Khapra beetle (Trogoderma granarium), mountain pine beetle (Dendroctonus ponderosae) and colorado potato beetle (Leptinotarsa decemlineata) are suggested together with plant diseases, causing famine in the past: potato blight (Phytophthora infestans), or big economic losses in agricultural production: wheat stem rust strain Ug99 (Puccinia graminis tritici), South American rubber blight (Microcyclus ulei) and cofee wilt disease (Fusarium xylarioides). The original article (BBC News) was cited also by IPM in the South (18 Jan 2012). Please note:
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