Final diagnosis


Pectobacterium carotovorum spp. (Erwinia spp., Bacterial rot)

A blackish lesion locally girdles the stem of this tomato plant for several centimeters. <b> <i> Pectobacterium carotovorum </i> </b>
Marked and homogeneous browning of the stem. <b> <i> Pectobacterium </i> sp. </b> (<i> Erwinia </i> sp.)
Yellowing, wilting of plants, brown stem portions. <b> <i> Pectobacterium </i> sp. </b> (<i> Erwinia </i> sp.)
Symptoms of<b><i> Pectobacterium </i>spp. </b>(bacterial stem rot) on stem
A brown, longitudinal square partially covers this tomato stem. <b> <i> Pectobacterium carotovorum </i> </b>
If conditions again become unfavorable for <b> <i> Pectobacterium carotovorum </i> </b>, the lesions in the marrow gradually necrotize and dry up.
A cross section of a twig shows that the pith has liquefied and hollowed out, and that it has taken on a brown to black color. <b> <i> Pectobacterium carotovorum </i> </b>
Pectobacterium2
<b> <i> Pectobacterium carotovorum </i> subsp. <i>carotovorum</i> </b> is a Gram - bacterium, rod-shaped and provided with peritrichous flagella (bacterial rot, <i> bacterial stem rot and fruit rot </i>).