Nematology 100: LECTURE 8
Migratory Ecto/Endoparasites - Hoplolaimidae,
- Migratory endoparasites - increasing specialization?
- Overlapping esophageal glands.
- What changes in control of behavioral traits required? How is the behavior
controlled? What are the signals?
- How inherited? Could the memory/instinct/control be destroyed to result in
aberrant behavior - e.g. ectoparasitic feeding?
Are there common characteristics?
- The problem of host defense mechanisms - necrosis, hypersensitivity,
- Apples - the replant problem
- Peaches - amygdalin, prunasin
- Management - resistance? - not much available, not specialized enough.
- Consider transgenic options with rootstocks: Mycogen corp (San Diego) has
Bt gene effective against Pratylenchus.
- Chitinase genes (only effective against eggs?)
- Snowdrop lectin
- Studies with trichosanthin (ribosome inhibiting protein).
- Clean planting stock
- Site preparation - inoculum removal
- Rotation, cropping systems, nematicides
- Therapy - hot water/formalin, corm/rhizome surgery
|393,394,437 bulb fields - Del Norte county
|929 Pratylenchus - lilac
|439 Clandosan - chitin+urea/BC bulbs, Del
|674 lesion/soybean GA
|675 peanut-pod lesions FL
|693 P. penetrans, onion, canada
|701 apple, P. penetrans, NY
|927 apple, Pp, NL
|928 apple Pp
|924 grape in P. vulnus soil from walnut
|925 Pratylenchus plums
|926 Pratylenchus on phlox, NL
|930 P. scribneri, bean
|S7 in squash
|s20,21 walnut + roots
|s36 on cabbage