Resource allocation in response to herbivory and gall formation in Linaria vulgaris
Jazyk angličtina Země Francie Médium print-electronic
Typ dokumentu časopisecké články
PubMed
30578998
DOI
10.1016/j.plaphy.2018.11.032
PII: S0981-9428(18)30533-3
Knihovny.cz E-zdroje
- Klíčová slova
- Carbohydrates, Galls, Herbivory, Linaria vulgaris, Rhinusa pilosa, Source-sink interactions, Trehalose 6-phosphate,
- MeSH
- býložravci * MeSH
- chlorofyl metabolismus MeSH
- fruktosa metabolismus MeSH
- glukosa metabolismus MeSH
- Linaria metabolismus parazitologie MeSH
- listy rostlin metabolismus parazitologie MeSH
- nádory rostlin * parazitologie MeSH
- nosatcovití MeSH
- stonky rostlin metabolismus parazitologie MeSH
- trehalosa metabolismus MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- chlorofyl MeSH
- fruktosa MeSH
- glukosa MeSH
- trehalosa MeSH
Trehalose and its precursor, trehalose 6-phosphate (T6P), are essential regulators of plant response to abiotic and biotic stress. Here we used the specific host-insect interaction between Linaria vulgaris (Plantaginaceae) and stem-galling weevil, Rhinusa pilosa (Mecinini, Curculionidae) with the aim to distinguish carbohydrate allocation patterns in response to herbivory, gall formation (G1, 24 h after oviposition), and gall development (G2, 7 days after oviposition) under controlled conditions. The hypothesis is that herbivory and galling induce distinct responses in both leaves and stems, and that shifts in carbon allocations are regulated by signaling sugars. Systemic response to herbivory was accumulation of T6P and maltose. The main feature of G1 in the stems was accumulation of trehalose, accompanied by increased T6P, turanose and glucose content, oppositely to the leaves. In G2, galls had 3-folds higher weight than controls, with further accumulation of fructose, glucose, turanose, and total water-insoluble carbohydrates (TIC), while the sucrose/hexose ratio decreased. Analysis of fast chlorophyll fluorescence kinetic (OJIP) transients in G2 showed a slight decrease in quantum yield of electron transport flux from QA to QB, and towards photosystem I acceptor side, correlated with the decreased content of photosynthetic pigments and hexoses accumulation. Redistribution of photosynthates, and accumulation of T6P were induced in response to herbivory, indicating its signaling role. The results support the hypothesis that R. pilosa can induce plant reprogramming towards the accumulation of beneficial carbohydrates in developing gall by mechanisms which include both T6P and trehalose.
Institute for Multidisciplinary Research University of Belgrade Belgrade Serbia
Institute for Plant Protection and Environment Department of Plant Pests Zemun Serbia
Citace poskytuje Crossref.org
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