The fig host can control the physiological parameters of its wasps, and thus can produce stressful environments when symbionts threaten over-exploitation, an outcome that is mechanistically indistinguishable from a suite of host responses to pathogenic symbionts, such as infection-induced fever in humans [69].
Perception of Nod factors by the cognate host receptors in turn activates a suite of host responses that are essential for accommodation of bacterial invasion [ 7- 10].
This introduction has triggered multiple invasions by a suite of host-alternating gallwasps, reaching northwards to Scotland and westwards to the northern slopes of the Pyrenees [ 8, 9, 11].
To detect exposures to the various pathogens more rapidly, especially during these early stages, we evaluated a suite of host responses to biological threat agents using global gene expression profiling on complementary DNA arrays.
Although it is tempting to speculate that the down-regulation of such important transcripts in defence may, in part, contribute to susceptibility against F. circinatum, a detailed time-course of infection in P. patula is necessary to determine the full suite of host responses during this susceptible interaction.
We do not know which endophyte species, if any, occupy the niche space previous occupied by the wound-infecting Fusarium species, but it seems likely that a different suite of host-entry mechanisms is required for colonization in herbivore-resistant maize.
The transmission cycle of B. burgdorferi is complex, and involves a suite of obligatory hosts for the vector tick, for which suitable habitat and environmental conditions must exist.
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Additionally, we identified host-specific patterns of gene expression indicating that the generalist parasitic plant T. versicolor maintains suites of genes for use with different hosts.
