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Plant Pests - Global Travellers
News about spread of plants, insects, bacteria and other harmful organisms moving with trade and traffic.
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Meet the beetle: Asian pest a threat to California's avocado crop

Meet the beetle: Asian pest a threat to California's avocado crop | Plant Pests - Global Travellers | Scoop.it

The plant ailment, known as "Fusarium dieback," was identified recently by UC Riverside extension plant pathologist Akif Eskalen.

California is already battling the Asian citrus psyllid, which spreads a disease that is threatening the state's $2-billion citrus industry. Recently they have got a new problem: the tea shot hole borer is an ambrosia beetle about the size of a sesame seed. It carries the Fusarium fungus in its mouth. When the beetle burrows into an avocado tree, it infects the plant with the fungus. Fusarium then attacks the tree's vascular tissue, interrupting the flow of water and nutrients.

Telltale signs of an infestation include dead or dying branches, as well as beetle exit holes on the bark of the tree's trunk or main branches. The wood near these exit holes may be discolored, wet-looking or be coated with a white, powdery substance.

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First Report of Mango Malformation Disease Caused by Fusarium mangiferae in Spain

APS: Mango (Mangifera indica L.) malformation disease causes severe economic losses worldwide. Symptoms of this disease in Spain were observed for the first time in April of 2006 in three mango orchards in the Axarquia Region (southern Spain). 

The authors say that this is the first report of mango malformation disease caused by Fusarium mangiferae in Spain and Europe.

 


Crespo et al. (2012) First Report of Mango Malformation Disease Caused by Fusarium mangiferae in Spain, Plant Disease, Volume 96, Issue 2, Page 286, February 2012. http://dx.doi.org/10.1094/PDIS-07-11-0599

Mango malformation, which is caused by Fusarium mangiferae and represents the most important floral disease of mango, is also known as Gibberella fujikuroi complex.

Kvas et al. (2008) Fusarium mangiferae associated with mango malformation in the Sultanate of Oman, EUROPEAN JOURNAL OF PLANT PATHOLOGY Volume 121, Number 2, 195-199, http://DOI: 10.1007/s10658-007-9231-8


Via Anne-Sophie Roy
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