Final diagnosis


Pratylenchus spp. (Root rot nematodes)

Numerous moist, yellowish to reddish-brown lesions are clearly visible on this tomato root system. Note the disappearance of most of the rootlets. <i> <b> Pratylenchus penetrans </b> </i>
Several nematodes have penetrated more or less deeply the cortex of this tomato root. <b> <i> Pratylenchus </i> spp. </b> (root rot nematodes, nematode lesions)
<b> <i> Pratylenchus penetrans </i> </b> is a fairly short nematode with a fairly visible buccal stylet.