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Foliar herbivory increases sucrose concentration in bracteal extrafloral nectar of cotton — Europe PMC PMID:34714845

Source: Europe PMC (en)
Original: https://europepmc.org/article/MED/34714845
DOI: 10.1371/journal.pone.0258836
License (as archived): CC0-1.0
Archived: 2026-11-02T05:29:24.600Z
SHA-256 of the archived text: db6ef2806efe49b50b2f480041b84a346228ae4b262f12774f55aba43557ba52
Stable URL of this page: https://metraipolis.com/documento/dc_00a4aea7cf71

How to cite

Foliar herbivory increases sucrose concentration in bracteal extrafloral nectar of cotton — Europe PMC PMID:34714845 — Europe PMC (en), https://europepmc.org/article/MED/34714845 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_00a4aea7cf71 (Metraipolis archive dc_00a4aea7cf71, sha256 db6ef2806efe49b50b2f480041b84a346228ae4b262f12774f55aba43557ba52)

BibTeX

@misc{dc00a4aea7cf71,
  title = {Foliar herbivory increases sucrose concentration in bracteal extrafloral nectar of cotton — Europe PMC PMID:34714845},
  howpublished = {Europe PMC (en)},
  url = {https://europepmc.org/article/MED/34714845},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_00a4aea7cf71; sha256 db6ef2806efe49b50b2f480041b84a346228ae4b262f12774f55aba43557ba52},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: Europe PMC (en), https://europepmc.org/article/MED/34714845. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Cultivated cotton, such as Gossypium hirsutum L., produces extrafloral (EF) nectar on leaves (foliar) and reproductive structures (bracteal) as an indirect anti-herbivore defense. In exchange for this carbohydrate-rich substance, predatory insects such as ants protect the plant against herbivorous insects. Some EF nectar-bearing plants respond to herbivory by increasing EF nectar production. For instance, herbivore-free G. hirsutum produces more bracteal than foliar EF nectar, but increases its foliar EF nectar production in response to herbivory. This study is the first to test for systemically induced changes to the carbohydrate composition of bracteal EF nectar in response to foliar herbivory on G. hirsutum. We found that foliar herbivory significantly increased the sucrose content of bracteal EF nectar while glucose and fructose remained unchanged. Sucrose content is known to influence ant foraging behavior and previous studies of an herbivore-induced increase to EF nectar caloric content found that it led to increased ant activity on the plant. As a follow-up to our finding, ant recruitment to mock EF nectar solutions that varied in sucrose content was tested in the field. The ants did not exhibit any preference for either solution, potentially because sucrose is a minor carbohydrate component in G. hirsutum EF nectar: total sugar content was not significantly affected by the increase in sucrose. Nonetheless, our findings raise new questions about cotton's inducible EF nectar responses to herbivory. Further research is needed to determine whether an herbivore-induced increase in sucrose content is typical of Gossypium spp., and whether it constitutes a corollary of systemic sucrose induction, or a potentially adaptive mechanism which enhances ant attraction to the plant.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (retro-catalogo: tutto il sottoinsieme open access di Europe PMC con licenza libera).
Pubblicazione: PloS one, 2021 (prima pubblicazione 2021-10-29).
Identificativi: PMID 34714845 · PMCID PMC8555782 · DOI 10.1371/journal.pone.0258836.
Pagina: https://europepmc.org/article/MED/34714845 — https://doi.org/10.1371/journal.pone.0258836. Autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza dell'articolo dichiarata da Europe PMC: CC0 (la versione è indicata dall'editore sulla pagina). Abstract riportato senza modifiche al contenuto, con attribuzione; deposito marcato CC0.
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