Characterization of a novel plasmid encoding F4-like fimbriae present in a Shiga-toxin producing enterotoxigenic Escherichia coli isolated during the investigation on a case of hemolytic-uremic syndrome.

In February 2017 a case of Hemolytic-Uremic Syndrome (HUS) was reported to the National Registry of HUS in an adult living in Northern Italy. Stool specimens from the patient and his family contacts were collected and the analyses led to the isolation of a Locus of Enterocyte Effacement (LEE)-negative Shiga toxin 2 (Stx2)-producing Escherichia coli. The epidemiological investigations performed brought to collect fecal samples from the animals reared in a farm held by the case's family and a mixture of bovine and swine feces proved positive for Shiga toxin-producing E.

Laser microdissection of grapevine leaf phloem infected by stolbur reveals site-specific gene responses associated to sucrose transport and metabolism.

Bois Noir is an emergent disease of grapevine that has been associated to a phytoplasma belonging to the XII-A stolbur group. In plants, phytoplasmas have been found mainly in phloem sieve elements, from where they spread moving through the pores of plates, accumulating especially in source leaves. To examine the expression of grapevine genes involved in sucrose transport and metabolism, phloem tissue, including sieve element/companion cell complexes and some parenchyma cells, was isolated from healthy and infected leaves by means of laser microdissection pressure catapulting (LMPC).

Neutral invertases in grapevine and comparative analysis with Arabidopsis, poplar and rice.

Neutral invertases (NIs, EC 3.2.1.