Guatemalan potato moth Tecia solanivora distinguish odour profiles from qualitatively different potatoes Solanum tuberosum L.

Karlsson, Miriam Frida; Birgersson, Göran; Witzgall, Peter; Lekfeldt, Jonas Duus Stevens; Punyasiri, P.A.N.; Bengtsson, Marie

doi:10.1016/j.phytochem.2012.09.015

Cited by 12 publications

(7 citation statements)

References 59 publications

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“…However, the environmental conditions influence the metabolites produced by plant tissues. According to Karlsson et al [36], the presence o f d e c a n a l , n o n a n a l , i s o p r o p y l m y r i s t a t e , phenylacetaldehyde, benzothiazole, heptadecane, octadecane, myristicin, E-α-farnesene, and verbenone indicates that the tuber has undergone stress. In this sense, heptadecane, isopropyl myristate, and octadecane, detected in the present study, may infer that the tubers experienced stress during post-harvest treatment.…”

Section: Discussionmentioning

confidence: 99%

Fermentation of yam (Dioscorea spp. L.) by indigenous phytase-producing lactic acid bacteria strains

et al. 2019

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The use of lactic bacteria in the development of functional foods has increased in recent years. In addition to their probiotic characteristics, they can ferment a variety of substrates, such as cereals, roots, and tubers. Phytase producer lactic acid bacteria strains and their behavior during the fermentation process of yam-based food were studied. Leuconostoc lactis CCMA 0415, Lactobacillus plantarum CCMA 0744, and Lactobacillus fermentum CCMA 0745 were selected due to phytase production, pH reduction, and growth during 24 h of fermentation. Oxalate activity was not detected in all assays, suggesting its concentration was reduced due to the bleaching process. Among the selected strains, L. lactis CCMA 0415 appeared to be a promising strain in yam-based fermentations because it maintained a cell viability above 8 log CFU/mL and did not reduce diosgenin concentrations (around 8.0 μg/mL) after fermentation for 24 h, thereby, generating a potentially functional yam food. Furthermore, this strain promoted the decrease of pH value from 6.1 to 3.8 and produced 8.1 g/L lactic acid, at 6 h of fermentation. The L. lactis CCMA 0415 was reported as a starter culture in fermented products based on cereals, roots, and tubers.

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Section: Discussionmentioning

confidence: 99%

Fermentation of yam (Dioscorea spp. L.) by indigenous phytase-producing lactic acid bacteria strains

et al. 2019

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“…Also plants of the nightshade family such as potato (Solanum tuberosum) are known for the toxic alkaloids in their leaves (Müller 1998). In potato, the (glyco)alkaloids α-solanine and α-chaconine cause toxicity to the tuber-eating larvae of the Guatemalan potato moth (Tecia solanivora; Karlsson et al 2013). In several wild potato accessions (S. chacoense), α-solanine and α-chaconine are acetylated into leptines, a metabolite that strongly affects the development of the Colorado potato beetle (Leptinotarsa decemlineata; Sinden et al 1986).…”

Section: Alkaloidsmentioning

confidence: 99%

Endogenous plant metabolites against insects

2018

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Herbivorous insects are responsible for large losses to agriculture through feeding damage itself but also by vectoring pathogens such as viruses. Plants have evolved various mechanisms to defend themselves against insects, including the production of specialised metabolites that act as natural insecticides. Throughout history, plants and plant extracts harbouring specialised metabolites have been exploited by man for their antiinsect properties. Also, commercial insecticides are often based on plant-specialised metabolites and adapted further e.g. to give them the physicochemical properties that render them systemic. The development and application of these synthetic pesticides has made it possible to scale up the production and to increase the yield of food crops worldwide. However, their adversary effects on the environment and on non-target organisms, first discussed in Rachel Carson's Silent Spring, continue to cause debate and recently resulted in a ban on the use of certain pesticides in the European Union. The trait of insect defence has been largely overlooked during crop domestication and resulted in basically unarmed crop plants. Endogenous production of specialised metabolites could be reintroduced in modern crop varieties to retrieve self-defences. However, despite the fact that a plethora of specialised metabolites from plants has been described, studies that validate their deterrent or insecticidal effect in planta (crop), let alone in field situations, are sparse. To answer the question whether it is feasible to reintroduce endogenous insecticides to bring about insect resistance, the defence metabolites of plants, their synthesis and regulatory mechanisms underlying their production are examined.

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“…Indeed, depending on the amount and type, SGAs can trigger various effects on plant physiology, and their role can be critical for plant resistance to biotic stressors, including fungi, bacteria, viruses and insects [2]. For example, SGAs in potatoes cause toxicity to the Guatemalan potato moth and the Colorado potato beetle, some of the worst potato pests [4,5]. Plant SGAs are biosynthesized by a specific pathway, where the major player is the 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMG-CoA), which catalyzes the first committed step of sterol precursors biosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide HMG Family Investigation and Its Role in Glycoalkaloid Accumulation in Wild Tuber-Bearing Solanum commersonii

Villano

D’Amelia

Esposito³

et al. 2020

Life

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Steroidal glycoalkaloids (SGAs) are a class of nitrogen-containing glycosides occurring in several plant families and biosynthesized through a specific pathway. HMG-CoA reductase is the first enzyme of this pathway, and its transcription can be regulated by biotic and abiotic stressors and even in a tissue-specific manner. This study aimed to characterize the HMG genes family in a tuber-bearing potato species, Solanum commersonii, using transcriptional and functional approaches. Our results provided evidence that four ScHMGs with different tissue-specificities represent the HMG gene family in S. commersonii and that they originated from ScHMG1 through segmental duplications. Phylogenetic analysis suggests that ScHMG1 is the direct ortholog of AtHMG1, which is associated with SGAs accumulation in plants. Its overexpression in S. commersonii revealed that this gene plays a key role in the accumulation of glycoalkaloids regulating the production of dehydrocommersonine.

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Guatemalan potato moth Tecia solanivora distinguish odour profiles from qualitatively different potatoes Solanum tuberosum L.

Cited by 12 publications

References 59 publications

Fermentation of yam (Dioscorea spp. L.) by indigenous phytase-producing lactic acid bacteria strains

Fermentation of yam (Dioscorea spp. L.) by indigenous phytase-producing lactic acid bacteria strains

Endogenous plant metabolites against insects

Genome-Wide HMG Family Investigation and Its Role in Glycoalkaloid Accumulation in Wild Tuber-Bearing Solanum commersonii

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