10.5061/DRYAD.304PM
Elbaz, Moshe
Hebrew University of Jerusalem
Halun, Eyal
Hebrew University of Jerusalem
Malka, Osnat
Hebrew University of Jerusalem
Malitsky, Sergey
Weizmann Institute of Science
Blum, Eyal
Weizmann Institute of Science
Aharoni, Asaph
Morin, Shai
Hebrew University of Jerusalem
Data from: Asymmetric adaptation to indolic- and aliphatic-glucosinolates
in the B and Q sibling species of Bemisia tabaci (Hemiptera: Aleyrodidae)
Dryad
dataset
2012
2012-06-21T18:33:25Z
2012-06-21T18:33:25Z
en
https://doi.org/10.1111/j.1365-294X.2012.05713.x
305170 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The role glucosinolates play in defending plants against delicate phloem
feeders such as aphids and whiteflies is currently not clear as these
herbivores may avoid bringing glucosinolates from the phloem sap into
contact with myrosinase enzymes. Here, we investigated the effects of high
levels of aliphatic- and indolic-glucosinolates on life history traits and
detoxification gene expression in two sibling species, B and Q, of the
whitefly Bemisia tabaci. High levels of aliphatic-glucosinolates decreased
the average oviposition rate of both species, and reduced the survival and
developmental rate of Q nymphs. High levels of indolic-glucosinolates
decreased the oviposition rate and survival of nymphal stages of the B
species and the developmental rate of both species. Molecular analyses
revealed two major asymmetries between the B and Q species. First,
specific GST genes (BtGST1 and BtGST2) were significantly induced during
exposure to indolic-glucosinolates only in Q. This may reflect the genes
putative involvement in indolic-glucosinolates detoxification and explain
the species' good performance on plants accumulating
indolic-glucosinolates. Second, the constitutive expression of eight of
the ten detoxification genes analyzed was higher in the Q species than in
the B species. Interestingly, four of these genes were induced in B in
response to high levels of glucosinolates. It seems, therefore, that the B
and Q species differ in their "optimal defense strategy". B
utilizes inducible defenses which are profitable if the probability of
experiencing the stress is small and its severity is low, while Q invests
significant resources in being always "ready" for a challenge.
Choice ovipositionNo choice oviposition BNo choice oviposition QSurvival
on sinigrinDevelopment BDevelopment QEgg and nymph survival BEgg and nymph
survival Q