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Phytoplasmas, vectors and measures for disease control

Phytoplasmas, vectors and measures for disease control | Plant health | Scoop.it
From www.indianjournals.com - February 23, 2012 4:42 AM

The most widespread phytoplasmas, vectors and measures for disease control in Slovenia


Phytoplasmas, as fastidious wall-less mollicutes, colonize phloem tissue of many plant species, including grapevine and fruit trees. They are transmitted between plants by vegetative propagation and by sap-sucking insect vectors, which enable spread of the diseases.

‘Candidatus Phytoplasma mali’, associated with apple proliferation, ‘Ca. P. prunorum’, associated with European stone fruit yellows and ‘Ca. P. pyri’, associated with pear decline, were detected in several fruit-growing areas of Slovenia. The most widespread phytoplasma on grapevine in Slovenia was the stolbur phytoplasma, (‘bois noir’), but ‘Flavescence dorée’ phytoplasma, associated with serious disease of grapevine, has been detected in Slovenian vineyards.


Mehle N  et al. (2012) The most widespread phytoplasmas, vectors and measures for disease control in Slovenia.- Phytopathogenic Mollicutes 2011(1)2 p 65- 76. Online ISSN : 2249-4677. IndianJournals.com 

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Construction of Marker-free Bivalent Expression Vector for Potato Antivirus Transformation

Construction of Marker-free Bivalent Expression Vector for Potato Antivirus Transformation | Plant health | Scoop.it
From www.agrpaper.com - November 24, 2012 7:52 AM

Potato Leafroll Virus (PLRV) and Potato Spindle Tuber Viroid (PSTVd) are pathogenes which cause cultivars degeneratation and yield reduction of potato,and spread extensively. Previous researches indicated that the spreading of PLRV by aphids redounded to the propagation of PSTVd. Therefore, it is especially important for potato cultivars to resist PLRV and PSTVd together. An effective and economic method to cultivate virus-resistant potato cultivars could be by plant genetic engineering.

In this research marker-free bivalent expression vector p3301-DR-Isir with RNAi structure of PLRV IS and di-component ribozyme specificly cleaving PSTVd RNA(-)was constructed successfully, which could be used as gene source to transform potato cultivars for high resistances to PLRV and PSTVd.

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EDIS – Electronic Data Information Source

From www.pc-pingan.com - February 15, 2012 11:03 AM

February 2012. EDIS is the Electronic Data Information Source of UF/IFAS Extension and a collection of information on different advices on several topics was collected by Woogle (sample page) tagged "florida data recovery"...

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Nature: The genome of the spider mite Tetranychus urticae reveals herbivorous pest adaptations | Plant Pathogenomics

Nature: The genome of the spider mite Tetranychus urticae reveals herbivorous pest adaptations | Plant Pathogenomics | Plant health | Scoop.it
From www.scoop.it - January 14, 2012 5:12 PM
The spider mite Tetranychus urticae is a cosmopolitan agricultural pest with an extensive host plant range and an extreme record of pesticide resistance.
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Polk Small Farms: New and Revised Agriculture Publications ...

Polk Small Farms: New and Revised Agriculture Publications ... | Plant health | Scoop.it
From polksmallfarms.blogspot.com - February 15, 2012 11:07 AM

The blog is for Polk County Florida small farms and pesticide applicators as a method of communication and sharing information. It is administered by the University of Florida IFAS Extension Polk County Extension Agent, Mary Beth Henry.

She has listed new and revised EDIS publications in the Agriculture program area that have been released to the public in January 2012. 

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Diseases of Fruit Crops & Ornamentals: Resistant Fire Blight bacteria in New York

Diseases of Fruit Crops & Ornamentals: Resistant Fire Blight bacteria in New York | Plant health | Scoop.it
From nicolewarduk.blogspot.com - January 14, 2012 5:47 PM

The rapid identification of this outbreak positions us to implement a coordinated plan leading up to next year's growing season,” said Herb Aldwinckle, professor of plant pathology and plant-microbe biology at Cornell university.

 

Cornell plant pathologists have issued a warning to New York apple and pear growers after discovering a strain of fire blight that is resistant to such traditional treatments in USA as the antibiotic streptomycin.

 

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