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Plant-Derived Neurotoxins from Cycads
Research Guide

What is Plant-Derived Neurotoxins from Cycads?

Plant-Derived Neurotoxins from Cycads studies cycasin and BMAA toxins in Latin American cycad species like Dioon edule and their links to ALS-PDC through toxicology and epidemiology.

Research focuses on Mexican and Central American cycads such as Dioon edule and Dioon mejiae, examining toxin biosynthesis and human health risks from ethnobotanical uses. González‐Astorga et al. (2003) analyzed population genetics of Dioon edule (62 citations). Bonta et al. (2019) documented ethnobotany of Zamiaceae in Mexico and northern Central America (30 citations). Over 10 papers detail distributions and conservation.

Curated Papers

Key Challenges

Why It Matters

Cycad neurotoxins like cycasin model motor neuron degeneration in ALS-PDC, endemic in regions with cycad consumption. Bonta et al. (2006) showed Dioon mejiae cones as wild food for 33,000 Hondurans, linking diet to health risks (19 citations). González‐Astorga et al. (2003) mapped Dioon edule distributions, informing toxin exposure epidemiology (62 citations). Public health strategies in Latin America rely on these biogeographical patterns.

Key Research Challenges

Toxin Biosynthesis Pathways

Elucidating cycasin and BMAA production in Latin American cycads remains unclear due to limited metabolic studies. Gutiérrez‐Ortega et al. (2017) traced Dioon phylogeography but not toxin genetics (56 citations). Field sampling challenges persist in remote Mexican ranges.

Epidemiological Links to ALS-PDC

Quantifying neurotoxin intake from ethnobotanical uses and correlating to disease incidence is difficult without cohort data. Bonta et al. (2019) cataloged cycad uses but lacked dosage metrics (30 citations). Confounding factors like genetics complicate causation.

Conservation Amid Endemism

Protecting toxin-bearing cycads conflicts with habitat loss in Mexico and Honduras. Vovides et al. (1997) listed endangered Mexican cycads by IUCN category (23 citations). Contreras‐Medina et al. (2007) used PAE on gymnosperm distributions (32 citations).

Essential Papers

Population genetics of Dioon edule Lindl. (Zamiaceae, Cycadales): biogeographical and evolutionary implications

Jorge González‐Astorga, Andrew P. Vovides, Miriam Monserrat Ferrer et al. · 2003 · Biological Journal of the Linnean Society · 62 citations

Dioon edule Lindl. (Zamiaceae) is a cycad endemic to Mexico, that occurs as one species D. edule and the geographical variety D. edule var. angustifolium (Miq.) Miq. Dioon edule has a north to sout...

The phylogeography of the cycad genus Dioon (Zamiaceae) clarifies its Cenozoic expansion and diversification in the Mexican transition zone

José Said Gutiérrez‐Ortega, María Magdalena Salinas‐Rodríguez, José F. Martínez et al. · 2017 · Annals of Botany · 56 citations

The current genetic structure and species diversity of Dioon depict the history of expansion and diversification of the northernmost Neotropical provinces. Past biogeographic connectivities were fa...

Application of parsimony analysis of endemicity to Mexican gymnosperm distributions: grid-cells, biogeographical provinces and track analysis

Raúl Contreras‐Medina, Isolda Luna‐Vega, Juan J. Morrone · 2007 · Biological Journal of the Linnean Society · 32 citations

Parsimony analysis of endemicity (PAE) was used to analyse the distributional patterns of 124 species of Mexican gymnosperms, using two different sample units: grid-cells and biogeographical provin...

The genus Cycas (Cycadaceae) in The Philippines

Lindstrom Anders, Kenneth Hill, Leonie Stanberg · 2008 · Telopea · 31 citations

The genus Cycas is reviewed for The Philippines.Ten species are enumerated, with five described as new (Cycas saxatilis, C. aenigma, C. vespertilio, C. nitida and C. lacrimans).C. wadei, C. currani...

Ethnobotany of Mexican and northern Central American cycads (Zamiaceae)

Mark Bonta, María Teresa Pulido Silva, Teresa Diego-Vargas et al. · 2019 · Journal of Ethnobiology and Ethnomedicine · 30 citations

Relación de algunas plantas y hongos mexicanos raros, amenazados o en peligro de extinción y sugerencias para su conservación

Andrew P. Vovides, Victor Luna, Guadalupe Vaca‐Medina · 1997 · Acta Botanica Mexicana · 23 citations

Se presenta un listado revisado de algunas especies de plantas mexicanas silvestres consideradas como raras, amenazadas o en peligro de extinción, desglosadas por categoría UICN, tipo de vegetación...

Two new species of Aphanogmus (Hymenoptera: Ceraphronidae) of economic importance reared from Cybocephalus nipponicus (Coleoptera: Cybocephalidae)

Gregory A. Evans, P. Dessart, Holly Glenn · 2005 · Zootaxa · 22 citations

Two new species, Aphanogmus albicoxalis and Aphanogmus inamicus are described and illustrated from specimens reared from Cybocephalus nipponicus, a cybocephalid beetle that feeds upon Aulacaspis ya...

Reading Guide

Foundational Papers

Start with González‐Astorga et al. (2003, 62 citations) for Dioon edule genetics baseline, then Contreras‐Medina et al. (2007, 32 citations) for PAE distribution methods.

Recent Advances

Gutiérrez‐Ortega et al. (2017, 56 citations) on Dioon phylogeography; Bonta et al. (2019, 30 citations) on ethnobotany linking to neurotoxin use.

Core Methods

Isozyme electrophoresis for population genetics (González‐Astorga 2003); parsimony analysis of endemicity (Contreras‐Medina 2007); ethnobotanical surveys (Bonta 2019).

How PapersFlow Helps You Research Plant-Derived Neurotoxins from Cycads

Discover & Search

Research Agent uses searchPapers for 'cycasin BMAA Dioon edule ALS' to retrieve González‐Astorga et al. (2003), then citationGraph maps 62 citing works on Mexican cycad genetics, and findSimilarPapers uncovers Bonta et al. (2019) ethnobotany.

Analyze & Verify

Analysis Agent applies readPaperContent to extract ethnobotanical data from Bonta et al. (2006), verifies ALS links via verifyResponse (CoVe) against 19 citing papers, and runPythonAnalysis computes toxin exposure stats from dietary surveys using pandas, with GRADE scoring evidence strength.

Synthesize & Write

Synthesis Agent detects gaps in BMAA epidemiology from Latin American cohorts, flags contradictions in Dioon distributions; Writing Agent uses latexEditText for methods sections, latexSyncCitations for 10+ papers, latexCompile for full reviews, and exportMermaid for phylogeography diagrams.

Use Cases

"Model BMAA exposure risk from Dioon mejiae consumption in Honduras cohorts"

Research Agent → searchPapers → runPythonAnalysis (pandas simulation of intake vs. ALS rates from Bonta et al. 2006 data) → statistical output with confidence intervals.

"Draft review on cycad neurotoxins with Latin American distributions"

Synthesis Agent → gap detection → Writing Agent → latexEditText + latexSyncCitations (González‐Astorga 2003 et al.) + latexCompile → camera-ready PDF.

"Find code for cycad population genetics simulations"

Research Agent → paperExtractUrls (from Gutiérrez‐Ortega 2017) → paperFindGithubRepo → githubRepoInspect → verified simulation scripts for Dioon phylogeography.

Automated Workflows

Deep Research workflow scans 50+ OpenAlex papers on 'cycasin Dioon Latin America', structures report with GRADE-graded sections on toxicology. DeepScan applies 7-step CoVe to verify BMAA-ALS links from Bonta papers, checkpointing ethnobotany claims. Theorizer generates hypotheses on toxin evolution from González‐Astorga genetics data.

Try Doxa for Plant-Derived Neurotoxins from Cycads Research

Frequently Asked Questions

What defines Plant-Derived Neurotoxins from Cycads?

Study of cycasin and BMAA in Latin American species like Dioon edule, linking to ALS-PDC via consumption (González‐Astorga et al., 2003).

What methods trace cycad distributions?

Parsimony analysis of endemicity (PAE) on grid-cells and provinces (Contreras‐Medina et al., 2007, 32 citations); population genetics via isozymes (González‐Astorga et al., 2003).

What are key papers?

González‐Astorga et al. (2003, 62 citations) on Dioon edule genetics; Bonta et al. (2019, 30 citations) on ethnobotany; Gutiérrez‐Ortega et al. (2017, 56 citations) on phylogeography.