Association with arbuscular mycorrhizal fungi influences alkaloid synthesis and accumulation in Catharanthus roseus and Nicotiana tabacum plants

Andrade, Sara Adrián López de; Malik, Sonia; Sawaya, Alexandra Christine Helena Frankland; Bottcher, Alexandra; Mazzafera, Paulo

doi:10.1007/s11738-012-1130-8

Cited by 52 publications

(31 citation statements)

References 76 publications

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“…), whereas no effect of P limitation was found on the concentration of N‐based alkaloids in tobacco leaves (Andrade et al . ), or on pyrrolizidine alkaloids in shoots or roots of ragwort (Vrieling & van Wijk ), although plants were not the same size in the latter study. In coffee seedlings, P deficiency led to a 20% reduction in foliar caffeine (Mazzafera ), while Andrade et al .…”

Section: Discussionmentioning

confidence: 66%

“…In coffee seedlings, P deficiency led to a 20% reduction in foliar caffeine (Mazzafera ), while Andrade et al . () found the response of alkaloids to P supply varied with species, tissue and the alkaloid compound. In the present study, in the same size (and same age) comparison, high‐P plants were N deficient, and had low shoot HCNp, whereas low P‐grown plants were P deficient, with a higher N:P and higher shoot HCNp, suggesting changes in HCNp with P treatment may reflect changes in plant N status.…”

Section: Discussionmentioning

confidence: 98%

“…The effects of AM on shoot and root alkaloids was found to vary with species, organ and compound in a study by Andrade et al . (), AM colonization stimulating increased production of some root alkaloids in Catharanthus roseus (L.) G. Don. In Plantago lanceolata , genotype specific increases in root iridoid glycoside concentrations with AM colonization were found (De Deyn et al .…”

Section: Discussionmentioning

confidence: 99%

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Age versus stage: does ontogeny modify the effect of phosphorus and arbuscular mycorrhizas on above‐ and below‐ground defence in forage sorghum?

Miller

Gleadow

Cavagnaro

2013

Plant Cell & Environment

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Arbuscular mycorrhizas (AM) can increase plant acquisition of P and N. No published studies have investigated the impact of P and AM on the allocation of N to the plant defence, cyanogenic glucosides. We investigated the effects of soil P and AM on cyanogenic glucoside (dhurrin) concentration in roots and shoots of two forage sorghum lines differing in cyanogenic potential (HCNp). Two harvest times allowed plants grown at high and low P to be compared at the same age and the same size, to take account of known ontogenetic changes in shoot HCNp. P responses were dependent on ontogeny and tissue type. At the same age, P-limited plants were smaller and had higher shoot HCNp but lower root HCNp. Ontogenetically controlled comparisons showed a P effect of lesser magnitude, and that there was also an increase in the allocation of N to dhurrin in shoots of P-limited plants. Colonization by AM had little effect on shoot HCNp, but increased root HCNp and the allocation of N to dhurrin in roots. Divergent responses of roots and shoots to P, AM and with ontogeny demonstrate the importance of broadening the predominantly foliar focus of plant defence studies/ theory, and of ontogenetically controlled comparisons.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Age versus stage: does ontogeny modify the effect of phosphorus and arbuscular mycorrhizas on above‐ and below‐ground defence in forage sorghum?

Miller

Gleadow

Cavagnaro

2013

Plant Cell & Environment

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“…We selected Nicotiana tabacum L. (cultivated tobacco; Solanaceae) as a model system because it is colonized by AMF (Andrade et al 2013) and produces plentiful nectar containing the alkaloids nicotine and anabasine (Detzel andWink 1993, Adler et al 2006) that can reduce Crithidia bombi in Bombus impatiens (Richardson et al 2015). Rhizophagus irregularis (previously Glomus intraradices) is a commercially available species of AMF used in agriculture and restoration.…”

Section: Study Systemmentioning

confidence: 99%

From plant fungi to bee parasites: mycorrhizae and soil nutrients shape floral chemistry and bee pathogens

Davis

Aguirre

Barber

et al. 2019

Ecology

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Bee populations have experienced declines in recent years, due in part to increased disease incidence. Multiple factors influence bee-pathogen interactions, including nectar and pollen quality and secondary metabolites. However, we lack an understanding of how plant interactions with their environment shape bee diet quality. We examined how plant interactions with the belowground environment alter floral rewards and, in turn, bee-pathogen interactions. Soil-dwelling mycorrhizal fungi are considered plant mutualists, although the outcome of the relationship depends on environmental conditions such as nutrients. In a 2 9 2 factorial design, we asked whether mycorrhizal fungi and nutrients affect concentrations of nectar and pollen alkaloids (anabasine and nicotine) previously shown to reduce infection by the gut pathogen Crithidia in the native bumble bee Bombus impatiens. To ask how plant interactions affect this common bee pathogen, we fed pollen and nectar from our treatment plants, and from a wildflower pollen control with artificial nectar, to bees infected with Crithidia. Mycorrhizal fungi and fertilizer both influenced flowering phenology and floral chemistry. While we found no anabasine or nicotine in nectar, high fertilizer increased anabasine and nicotine in pollen. Arbuscular mycorrhizal fungi (AMF) decreased nicotine concentrations, but the reduction due to AMF was stronger in high than low-nutrient conditions. AMF and nutrients also had interactive effects on bee pathogens via changes in nectar and pollen. High fertilizer reduced Crithidia cell counts relative to low fertilizer in AMF plants, but increased Crithidia in non-AMF plants. These results did not correspond with effects of fertilizer and AMF on pollen alkaloid concentrations, suggesting that other components of pollen or nectar were affected by treatments and shaped pathogen counts. Our results indicate that soil biotic and abiotic environment can alter bee-pathogen interactions via changes in floral rewards, and underscore the importance of integrative studies to predict disease dynamics and ecological outcomes.

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“…Moreover, some defense‐related alkaloids, including trigonelline, castanospermine, and camptothecin, are accumulated in mycorrhizal plants . A reduced disease severity was found to be correlated with the enhanced phenolic content of Vicia faba and tomato mycorrhizal plants challenged with Botrytis fabae and Phytophthora nicotianae , respectively .…”

Section: Production Of Health‐promoting Phytochemicals In Mycorrhizalmentioning

confidence: 98%

Beneficial mycorrhizal symbionts affecting the production of health‐promoting phytochemicals

2014

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Fresh fruits and vegetables are largely investigated for their content in vitamins, mineral nutrients, dietary fibers, and plant secondary metabolites, collectively called phytochemicals, which play a beneficial role in human health. Quantity and quality of phytochemicals may be detected by using different analytical techniques, providing accurate quantification and identification of single molecules, along with their molecular structures, and allowing metabolome analyses of plant-based foods. Phytochemicals concentration and profiles are affected by biotic and abiotic factors linked to plant genotype, crop management, harvest season, soil quality, available nutrients, light, and water. Soil health and biological fertility play a key role in the production of safe plant foods, as a result of the action of beneficial soil microorganisms, in particular of the root symbionts arbuscular mycorrhizal fungi. They improve plant nutrition and health and induce changes in secondary metabolism leading to enhanced biosynthesis of health-promoting phytochemicals, such as polyphenols, carotenoids, flavonoids, phytoestrogens, and to a higher activity of antioxidant enzymes. In this review we discuss reports on health-promoting phytochemicals and analytical methods used for their identification and quantification in plants, and on arbuscular mycorrhizal fungi impact on fruits and vegetables nutritional and nutraceutical value.

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Association with arbuscular mycorrhizal fungi influences alkaloid synthesis and accumulation in Catharanthus roseus and Nicotiana tabacum plants

Cited by 52 publications

References 76 publications

Age versus stage: does ontogeny modify the effect of phosphorus and arbuscular mycorrhizas on above‐ and below‐ground defence in forage sorghum?

Age versus stage: does ontogeny modify the effect of phosphorus and arbuscular mycorrhizas on above‐ and below‐ground defence in forage sorghum?

From plant fungi to bee parasites: mycorrhizae and soil nutrients shape floral chemistry and bee pathogens

Beneficial mycorrhizal symbionts affecting the production of health‐promoting phytochemicals

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