High antioxidant activity of phenolic compounds dampens oxidative stress in Espinosa nothofagi galls induced on Nothofagus obliqua buds

Guedes, Lubia M.; Torres, Solange; Sáez-Carillo, Katia; Becerra, José; Pérez, Claudia; Aguilera, Narciso

doi:10.1016/j.plantsci.2021.111114

Cited by 20 publications

(12 citation statements)

References 49 publications

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“…Galling insects induce the production of phenolic antioxidants, which are considered to be essential for maintaining oxidative homeostasis (Ferreira et al., 2018; Guedes et al., 2022). The shikimate and phenylpropanoid biosynthesis pathways play a key role in synthesizing phenolic compounds (Biała & Jasiński, 2018).…”

Section: Discussionmentioning

confidence: 99%

A chromosome‐scale genome of Rhus chinensis Mill. provides new insights into plant–insect interaction and gallotannins biosynthesis

Ni,

Liu,

Wang

et al. 2024

The Plant Journal

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SUMMARYRhus chinensis Mill., an economically valuable Anacardiaceae species, is parasitized by the galling aphid Schlechtendalia chinensis, resulting in the formation of the Chinese gallnut (CG). Here, we report a chromosomal‐level genome assembly of R. chinensis, with a total size of 389.40 Mb and scaffold N50 of 23.02 Mb. Comparative genomic and transcriptome analysis revealed that the enhanced structure of CG and nutritional metabolism contribute to improving the adaptability of R. chinensis to S. chinensis by supporting CG and galling aphid growth. CG was observed to be abundant in hydrolysable tannins (HT), particularly gallotannin and its isomers. Tandem repeat clusters of dehydroquinate dehydratase/shikimate dehydrogenase (DQD/SDH) and serine carboxypeptidase‐like (SCPL) and their homologs involved in HT production were determined as specific to HT‐rich species. The functional differentiation of DQD/SDH tandem duplicate genes and the significant contraction in the phenylalanine ammonia‐lyase (PAL) gene family contributed to the accumulation of gallic acid and HT while minimizing the production of shikimic acid, flavonoids, and condensed tannins in CG. Furthermore, we identified one UDP glucosyltransferase (UGT84A), three carboxylesterase (CXE), and six SCPL genes from conserved tandem repeat clusters that are involved in gallotannin biosynthesis and hydrolysis in CG. We then constructed a regulatory network of these genes based on co‐expression and transcription factor motif analysis. Our findings provide a genomic resource for the exploration of the underlying mechanisms of plant‐galling insect interaction and highlight the importance of the functional divergence of tandem duplicate genes in the accumulation of secondary metabolites.

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Section: Discussionmentioning

confidence: 99%

A chromosome‐scale genome of Rhus chinensis Mill. provides new insights into plant–insect interaction and gallotannins biosynthesis

Ni,

Liu,

Wang

et al. 2024

The Plant Journal

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“…2015; Guedes et al . 2022b), as lignin monomers can remove reactive oxygen species (Vanholme et al . 2010).…”

Section: Discussionmentioning

confidence: 99%

“…At the top of the gall, numerous layers of sclerenchyma, mostly brachysclereids, are differentiated, which could imply an investment in protection. Sclerenchyma formation in insect galls has been related to protection against natural enemies and oxidative stress (Isaias et al 2015;Guedes et al 2022b), as lignin monomers can remove reactive oxygen species (Vanholme et al 2010).…”

Section: Discussionmentioning

confidence: 99%

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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“…Furthermore, the maintenance of an intact meristele is related to the phenolic accumulation in the circumendodermal band walls, which were usually related to the defense against herbivores and pathogens (Feeny 1976;Tempel 1981), and removal of excessive reactive oxygen species (Tuladhar et al 2021), avoiding premature cell senescence in the galls (Isaias et al 2018;Ferreira et al 2018;Guedes et al 2022). A previous comparison of phenolic substances that accumulated in the NGSs and galls induced by T. polypodivora revealed that they had similar accumulated phenolic substances (Santos et al 2022).…”

Section: Discussionmentioning

confidence: 99%

Alterations induced by Tortrimosaica polypodivora on the stems of Microgramma vacciniifolia: simple or complex galls?

Martins,

Santos,

Reis

et al. 2023

Rodriguésia

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Microgramma vacciniifolia, an epiphyte fern, hosts of two stem galls. One is induced by Tortrimosaica polypodivora (Lepidoptera), which can also induce galls in M. squamulosa and M. mortoniana. The alterations induced by T. polypodivora on M. vacciniifolia stem were compared to non-galled organs to evaluate the anatomical potentials of host ferns in response to a galling Lepidoptera. Histochemical and histometrical comparisons between galled and non-galled stems were performed to assess the processes leading to gall formation. M. vacciinifolia and M. squamulosa galls were anatomically similar, although their sizes differ, reflecting the growth potential of each host species. Simple structural alterations, such as hyperplasia of cortical and pericycle cells, occur during gall formation, while cell hypertrophy, common in more complex galls, was only detected on the pericycle. Meristele size remained unaltered in galls, but the pericycle appeared hyperplasic. The protective scales were broader in galls. A nutritive tissue with lipids, typical to Lepidoptera galls, was observed around the larval chamber, with small cells and meristematic activity. Starch, proteins, and reducing sugars accumulated in nutritive cells are uncommonly found in Lepidoptera galls. Despite simple structural alterations, T. polypodivora induced a gradient of primary metabolites, similar to angiosperm galls.

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High antioxidant activity of phenolic compounds dampens oxidative stress in Espinosa nothofagi galls induced on Nothofagus obliqua buds

Cited by 20 publications

References 49 publications

A chromosome‐scale genome of Rhus chinensis Mill. provides new insights into plant–insect interaction and gallotannins biosynthesis

A chromosome‐scale genome of Rhus chinensis Mill. provides new insights into plant–insect interaction and gallotannins biosynthesis

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

Alterations induced by Tortrimosaica polypodivora on the stems of Microgramma vacciniifolia: simple or complex galls?

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