Final diagnosis


Bacterial rot (P. carotovorum)

When wet rot caused by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> encircles the collar, the cabbage can wilt suddenly. (bacterial rot, bacterial soft rot)
After wilting, cabbages affected by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> eventually become necrotic and dry out. (bacterial rot, bacterial soft rot)
Wet rot caused by the recent development of <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> on collar and lower parts of cabbage leaves. (bacterial rot, bacterial soft rot)
In addition to the degradation of the midrib of several lower leaves, the collar is completely surrounded by a brownish wet rot. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial soft rot)
Wet, brownish rot on leaves and head of cabbage. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial soft rot)
Wet rot caused by the rather old development of <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> on collar and lower parts of cabbage leaves. (bacterial rot, bacterial soft rot)
A longitudinal section through the taproot of this cabbage recently invaded by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> shows brown vessels. (bacterial rot, bacterial soft rot)
A longitudinal section through the taproot reveals invasion of the marrow by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> which takes on a glassy appearance, a blackish tint, and begins to liquefy. (bacterial rot, bacterial soft rot)
A cross-section through the taproot this cabbage shows a partially rotten, blackish, decomposing pith. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b>. (bacterial rot, bacterial soft rot)
Eventually the tissues are more or less decomposed, as is the case with the lower part of the stem of this cabbage. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial soft rot)
Plante-Navet
Erwinia_Navet
Erwinia_Navet
A blackish lesion locally encircles the stem of this tomato plant for several centimeters. <b><i>Pectobacterium carotovorum</i></b>
A blackish lesion extends longitudinally for several centimeters from a stem of this tomato plant. The stem is completely decomposed locally. <b><i>Pectobacterium carotovorum</i></b>
Pectobacterium-tomate1
Salades
Salad completely collapsed following an attack by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b>. (bacterial rot)
Salad completely collapsed: several leaves are withered or even dried out, and their main vein has blackened. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
the basal part of this lettuce, collar and lower leaves, is entirely rotten. the tissues are moist and show a fairly characteristic dark to black coloration. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
The marrow and vascular system gradually liquefy; fully rotted tissues show a fairly characteristic black coloration. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
This courgette, whose stem is strongly affected by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b>, reveals several chlorotic and withered leaves. (bacterial rot)
<b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b>, at the end of development on courgette, can cause plant death. This is the case on these completely dried contiguous plants. (bacterial rot)
Many courgette leaf petioles are affected by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b>. they show beige to blackish-brown longitudinal lesions over several centimeters. (bacterial rot)
The development of <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> on this zucchini petiole leads to tissue collapse; an open, moist, orange lesion extends over several centimeters. (bacterial rot)
The development of <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> on this zucchini petiole leads to tissue browning; a moist, brownish lesion extends over several centimeters. (bacterial rot)
This longitudinally cut stem is locally hollowed out, the tissues not yet liquefied show a brownish to orange tint. Note that the vascular system is somewhat less affected by rot. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
Detail of vessel invasion by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
A moist, soft, and blackish lesion is clearly visible at the end of this zucchini which tends to shrivel up. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
The internal tissues of this zucchini have taken on a brownish tint, cavities have also formed. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
Complete rotting of two zucchini fruits. Note the presence of a beigeish bacterial mucus on the damaged fruits. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
Detail of the beigeish bacterial mucus sometimes visible on the damaged fruits. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot)
The internal tissues of the end of this zucchini have completely liquefied. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial rot, bacterial stem rot and fruit rot)
On this celery, certain lower parts of the petiole are gradually rotting, as well as the collar. Fabrics are damp and dark. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial soft rot)
Several petioles of this celery stalk have rotted at their lower part. The broken down tissues facilitated the collapse of several leaves which soon withered. <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> (bacterial soft rot)
When wet rot caused by <b><i>Pectobacterium carotovorum</i> subsp. <i>carotovorum</i></b> encircles the collar or the base of the petioles, the stalks of celery eventually wither abruptly. (bacterial rot, bacterial soft rot)
Pectobacterium-persil2
Pectobacterium-persil1