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- W3185688175 abstract "Abstract BACKGROUND Andean lupin ( Lupinus mutabilis Sweet) is an important leguminous crop from South America with a high protein content. In Ecuador, lupin yields are severely affected by the infestation of Delia platura larvae on germinating seeds. The application of elicitor molecules with activity against herbivorous insects to control D. platura infestation constitutes an unexplored and promising alternative for chemical insecticides. In this study, methyl jasmonate (MeJA), hexanoic acid, menadione sodium bisulfite, and DL‐β‐aminobutyric acid were evaluated for their ability to induce resistance against D. platura in three commercial lupin cultivars. RESULTS Only seeds pretreated with MeJA significantly impaired insect performance during choice and no‐choice assays. Additionally, fitness indicators such as seed germination and growth were not affected by MeJA treatment. To investigate the molecular mechanisms behind the MeJA‐mediated resistance, RT‐qPCR assays were performed. First, RT‐qPCR reference genes were validated, showing that Lm UBC was the most stable reference gene. Next, expression analysis over time revealed that MeJA application up‐regulated the activity of the jasmonic acid biosynthetic genes Lm LOX2 and Lm AOS, together with other jasmonate‐related defense genes, such as Lm TPS1, Lm TPS4, Lm PI2, Lm MBL, Lm L/ODC, Lm CSD1, and Lm POD. CONCLUSION This study indicates that MeJA can be used as an environmentally friendly elicitor molecule to protect Andean lupin from D. platura attack without fitness cost. MeJA application induces plant defense responses to insects in Andean lupin that may be modulated by the onset of terpenoid biosynthesis, proteinase inhibitors, lectins, polyamines, and antioxidative enzymes. © 2021 Society of Chemical Industry." @default.
- W3185688175 created "2021-08-02" @default.
- W3185688175 creator A5038913807 @default.
- W3185688175 creator A5079191245 @default.
- W3185688175 creator A5080786687 @default.
- W3185688175 creator A5085081780 @default.
- W3185688175 creator A5090279888 @default.
- W3185688175 date "2021-08-06" @default.
- W3185688175 modified "2023-09-25" @default.
- W3185688175 title "Methyl jasmonate‐induced resistance to <i>Delia platura</i> (<scp>D</scp>iptera: <scp>A</scp>nthomyiidae) in <i>Lupinus mutabilis</i>" @default.
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