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Impact of Protoporphyrin Lysine Derivatives on the Ability of Nosema ceranae Spores to Infect Honeybees.


ABSTRACT: The effect of two protoporphyrin IX derivatives conjugated with single (PP[Lys(TFA)-OH)]2) or double (PP[Lys(TFA)-Lys(TFA)-OH]2) lysine moieties on the infectious capacity of Nosema ceranae spores was examined, and their efficacies were compared with those of a cationic porphyrin (H2TTMePP). Honeybees were inoculated with spores preincubated with porphyrins or with untreated spores (control). A significantly lower level of infection was observed in the bees infected with the porphyrin-treated spores than in the infected control. Porphyrins 1 and 2 reduced the infectious capability of microsporidia more efficiently than porphyrin 3, with bee mortality declining to almost 50%. Confocal analysis of the midguts of infected bees revealed distinct differences in the number of spores between the control group and the group infected with PP[Lys(TFA)-Lys(TFA)-OH]2-treated spores. Notably, bees with a reduced level of infection consumed less sucrose syrup than the control bees, indicating a reduction in digestive disorders and an improvement in food absorption.

SUBMITTER: Buczek K 

PROVIDER: S-EPMC7469180 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Impact of Protoporphyrin Lysine Derivatives on the Ability of <i>Nosema ceranae</i> Spores to Infect Honeybees.

Buczek Katarzyna K   Deryło Kamil K   Kutyła Mateusz M   Rybicka-Jasińska Katarzyna K   Gryko Dorota D   Borsuk Grzegorz G   Rodzik Beata B   Trytek Mariusz M  

Insects 20200805 8


The effect of two protoporphyrin IX derivatives conjugated with single (PP[Lys(TFA)-OH)]<sub>2</sub>) or double (PP[Lys(TFA)-Lys(TFA)-OH]<sub>2</sub>) lysine moieties on the infectious capacity of <i>Nosema ceranae</i> spores was examined, and their efficacies were compared with those of a cationic porphyrin (H<sub>2</sub>TTMePP). Honeybees were inoculated with spores preincubated with porphyrins or with untreated spores (control). A significantly lower level of infection was observed in the bee  ...[more]

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