Impact of the galling Dasineura sp. on the structural and chemical profile of Peumus boldus stems

Guedes, Lubia M.; Gavilán, Elvis; Pérez, Claudia; Becerra, José; Aguilera, Narciso

doi:10.1007/s00468-022-02368-z

Cited by 3 publications

(10 citation statements)

References 47 publications

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“…Hyperplasia occurs at the xylem level, mainly of the vascular parenchyma. This could imply an investment in storage parenchyma tissue, through the accumulation of lipids and starch in pith, parenchymal rays, and gall cortex (Guedes et al 2022a). In other plant-gall inducer systems (Guedes et al 2018;Jorge et al 2022), parenchyma cell overproduction in stem galls has also been related to water storage towards the gall tissues, as affirmed in the present study through the water potential values.…”

Section: Discussionsupporting

confidence: 77%

“…This could imply an investment in storage parenchyma tissue, through the accumulation of lipids and starch in pith, parenchymal rays, and gall cortex (Guedes et al . 2022a). In other plant–gall inducer systems (Guedes et al .…”

Section: Discussionmentioning

confidence: 99%

“…However, this poor phloem differentiation may not be of major importance for larva nutrition, since the tissues bordering the gall function as storage tissue (Guedes et al . 2022a). In the non‐galled stem portion, cambial activity is normal, and the tissues derived from it differentiate normally.…”

Section: Discussionmentioning

confidence: 99%

“…Nutrients can thus move from the photosynthetically active tissues to the non‐galled stem portion and then to the gall storage tissue, draining into gall nutritive cells and guaranteeing larval nutrition (Guedes et al . 2022a).…”

Section: Discussionmentioning

confidence: 99%

“…Dasineura sp. (Diptera: Cecidomyiidae) establishes in the vascular system of Peumus boldus Molina (Monimiaceae), inducing an increase in stem diameter, through hyperplasia of the secondary xylem and phloem areas and differentiation of parenchyma and nutritive tissues around the larval chamber (Guedes et al 2022a). Hence, the study of the establishment of Dasineura sp.…”

Section: Introductionmentioning

confidence: 99%

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Vascular implications of Dasineura sp. galls' establishment on Peumus boldus stems

Guedes,

Aguilera,

Gavilán

et al. 2023

Plant Biol J

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Some chewing larvae are capable of inducing galls in the host vascular cylinder, e.g. Dasineura sp. (Cecidomyiidae) on Peumus boldus stems. Due to the medicinal and economic importance of P. boldus, the anatomical and functional implications of establishment of Dasineura sp. on P. boldus stems were investigated. We asked if establishment of Dasineura sp. in P. boldus stems induces abnormalities at the cellular and organizational level of the vascular system that increase during gall development in favour of the hydric status of the gall. Anatomical alterations induced in the stems during gall development were determined. Cytohistometric analyses in mature galls were compared to non‐galled stems, and water potential and leaf area of non‐galled stems were compared with galled stems. Dasineura sp. establishes in the vascular cambium, leading to delignification and rupture of xylem cells, inhibiting formation of phloem and perivascular sclerenchyma. Gall diameter increases together with larval feeding activity, producing a large larval chamber and numerous layers of nutritive tissue, vascular parenchyma, and sclerenchyma. These anatomical alterations do not affect the leaf area of galled stems but favour increased water flow towards these stems. The anatomical alterations induced by Dasineura sp. in P. boldus stems guarantee water and nutrient supply to the gall and larva. After the inducer exits stems, some host branches no longer have vascular connections with the plant body.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Vascular implications of Dasineura sp. galls' establishment on Peumus boldus stems

Guedes,

Aguilera,

Gavilán

et al. 2023

Plant Biol J

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Gall inducer Dasineura sp. alters the polyphenol profile and antioxidant activity of Peumus boldus stems

Guedes,

Aguilera,

Torres

et al. 2024

Tree Physiology

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Peumus boldus, a tree native to Chile, is extensively used for medicinal purposes due to its richness in alkaloids and antioxidant polyphenols. A species of galling insect, Dasineura sp. induces structural and chemical changes on P. boldus stems while its galls are established and developed. Taking into account the antioxidant properties of P. boldus polyphenols, it would be expected that Dasineura sp. induce changes in the accumulation sites, chemical profile, and antioxidant activity of the P. boldus stem polyphenols, related to different ROS production levels during gall development. Dasineura sp. induces changes in the accumulation sites of total polyphenols, flavonols, and lignin, redirecting their accumulation towards the sites of greatest production of H2O2 and O2.−. Although changes in total polyphenol content would be expected, this did not vary significantly between non-galled and galled stems. However, the galling insect induced changes in the profile and concentration of soluble polyphenols, leading to the gall extracts’ antioxidant capacity decreasing significantly during the maturation and senescence stages. Additionally, during the maturation stage, lignin deposition increases in the more peripheral gall tissues, which also contributes to ROS dissipation. The differences in the different gall developmental stages’ antioxidant activity could be related to the identity and concentration of phenolic compounds in each gall extract, rather than to the total phenol content. Regardless of the mechanisms involved, the dissipation of the ROS generated by Dasineura sp. activity occurs, restoring the redox balance in galls and guaranteeing the success of the inducer.

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Can the galling mite Eriophyes tiliae alter the phenolic profile and antioxidant capacity of Tilia platyphyllos in a high UV radiation environment?

Guedes,

Rodríguez‐Cerda,

Gavilán

et al. 2024

Entomologia Exp Applicata

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Leaves of large‐leaved lime, Tilia platyphyllos Scop. (Malvaceae), harbor colonies of Eriophyes tiliae (Pagenstecher) (Acari: Eriophyidae), capable of modifying the leaf structure (inducer of nail‐galls) and physiology. The aerial organs of T. platyphyllos have traditionally been consumed for their high antioxidant capacity, related to the rich polyphenol profile. Here, we investigated the polyphenol profiles and antioxidant activity of T. platyphyllos non‐galled leaves and galls to determine the changes induced by the mite in a Chilean environment with high ultraviolet (UV) radiation. Phenolic compound identification in the methanol extracts of non‐galled leaves and galls was carried out through HPLC. Furthermore, the antioxidant activity of the extracts was quantified through spectrophotometry, and it was compared with the standards of the three major phenolic compounds of both organs. Nine phenolic compounds were detected in non‐galled leaves and galls, with no differences between the two organs, except for the absence of gallic acid in galls. The concentration of phenolic compounds did differ significantly between the two conditions. In leaf galls, epicatechin and cyanidin‐3‐glucoside concentrations and antioxidant capacity increased significantly compared to non‐galled leaves. As chlorogenic acid and cyanidin‐3‐glucoside are active phenols responding to UV radiation stress, their concentration in T. platyphyllos leaves could be a response to the high UV radiation occurring in Chile during spring and summer. The phenolic compounds detected here have been reported to be potent antioxidants, that are probably potentiated by E. tiliae for its own protection against UV‐B radiation, as the two most abundant compounds in the galls exhibited the highest capacity to reduce ABTS and DPPH radicals. However, we do not rule out the participation of phenolics in protection against natural enemies of the gall mite, as chlorogenic acid and epicatechin are powerful antifeedants.

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Impact of the galling Dasineura sp. on the structural and chemical profile of Peumus boldus stems

Cited by 3 publications

References 47 publications

Vascular implications of Dasineura sp. galls' establishment on Peumus boldus stems

Vascular implications of Dasineura sp. galls' establishment on Peumus boldus stems

Gall inducer Dasineura sp. alters the polyphenol profile and antioxidant activity of Peumus boldus stems

Can the galling mite Eriophyes tiliae alter the phenolic profile and antioxidant capacity of Tilia platyphyllos in a high UV radiation environment?

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