Abstract
ABSTRACT Differences in susceptibility to viruses in plants may be partially explained by the insect vector probing behavior and by the presence of phenolic compounds, which are often associated with defense strategies. This study aimed at detecting barriers that may difficult the probing activity of the Dysmicoccus brevipes (Pseudococcidae) pineapple mealybug, a vector of the pineapple mealybug wilt-associated virus, as well as evaluating the phenolic content of plants, in order to verify any possible relationship with the probing behavior, by using the electrical penetration graphs (EPG) technique. Seedlings of 'Smooth Cayenne' and 'Pérola' pineapple cultivars were used in the experiments. Only 28 % and 21 % of the mealybugs reached the phloem of the 'Smooth Cayenne' and 'Pérola' cultivars, respectively, over 16 h of recording, with an average of 9 h to reach the phloem vessels. The xylem phase was extended in both cultivars and represented approximately 31 % ('Smooth Cayenne') and 44 % ('Pérola') of the recording time. The phenolic contents of both cultivars were similar.
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Claims 6
Claim · model-written summary
Only 28% of mealybugs reached the phloem of Smooth Cayenne pineapple during 16 hours.
- Taxon
- pineapple
Ananas comosust0 - Material
- 'Smooth Cayenne'e0
- Organ / stage
- phloeme0
- Interactor
- mealybugsPseudococcidaee0pest
- Outcome
- mealybugs reached the phloeme0
- Value
- 28 %e0
- Qualifier
- 16 h of recordinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only 28 % and 21 % of the mealybugs reached the phloem of the 'Smooth Cayenne' and 'Pérola' cultivars, respectively, over 16 h of recording”
t0“Probing behavior of Dysmicoccus brevipes mealybug in pineapple plants1”
Claim · model-written summary
Only 21% of mealybugs reached the phloem of Pérola pineapple during 16 hours.
- Taxon
- pineappleAnanas comosust0
- Material
- 'Pérola'e0
- Organ / stage
- phloeme0
- Interactor
- mealybugsPseudococcidaee0pest
- Outcome
- mealybugs reached the phloeme0
- Value
- 21 %e0
- Qualifier
- 16 h of recordinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only 28 % and 21 % of the mealybugs reached the phloem of the 'Smooth Cayenne' and 'Pérola' cultivars, respectively, over 16 h of recording”
t0“Probing behavior of Dysmicoccus brevipes mealybug in pineapple plants1”
Claim · model-written summary
Mealybugs took an average of 9 hours to reach pineapple phloem.
Not reportedTaxonInteractor
Verbatim
e0“with an average of 9 h to reach the phloem vessels.”
Claim · model-written summary
The xylem phase occupied approximately 31% of recording time in Smooth Cayenne.
- Material
- 'Smooth Cayenne'e0
- Organ / stage
- xyleme0
- Outcome
- xylem phasee0
- Value
- 31 %e0
- Qualifier
- recording timee0
Not reportedTaxon
Verbatim
e0“The xylem phase was extended in both cultivars and represented approximately 31 % ('Smooth Cayenne') and 44 % ('Pérola') of the recording time.”
Claim · model-written summary
The xylem phase occupied approximately 44% of recording time in Pérola.
Not reportedTaxon
Verbatim
e0“The xylem phase was extended in both cultivars and represented approximately 31 % ('Smooth Cayenne') and 44 % ('Pérola') of the recording time.”
Claim · model-written summary
Phenolic contents were similar between the two pineapple cultivars.
Not reportedTaxon
Verbatim
e0“The phenolic contents of both cultivars were similar.”