Abstract
Induced resistance of plants against pests and diseases via plant defense responses is well
documented and can occur aboveground, in the leaves, and belowground in the roots. A
number of recent studies have shown that soil-borne pests can also induce plant resistance
aboveground and vice versa. Since plants are frequently exposed to aboveground and
belowground pests simultaneously, interactions between induced plant defense responses in
the foliage and in the roots can have major implications for induced resistance. On the one
hand, induction in one plant part may result in systemically induced resistance in the other
part. On the other hand, simultaneously occurring aboveground and belowground induced
plant defenses may interfere, for example, when the activities of root feeders alter the
effectiveness of induced resistance against foliar herbivores. I will review the literature to show
similarities and dissimilarities in aboveground and belowground resistance. I will show how
soil dwelling pests such as nematodes and root feeding insects can induce defense responses
in aboveground plant parts, and how aboveground pests can influence plant defense responses
in the roots. I will discuss the mechanisms involved and provide examples of the
consequences of interference between aboveground and belowground plant defense responses
for plant damage and insect herbivore performance. Finally, I will show how such
aboveground-belowground interactions can influence the reliability of indirect plant defense
responses, the attraction by the plant of natural enemies of the attacker.
Original language | English |
---|---|
Publication status | Published - 2006 |
Event | IOBC Meeting - Duration: 27 Apr 2006 → 29 Apr 2006 |
Conference
Conference | IOBC Meeting |
---|---|
Period | 27/04/06 → 29/04/06 |