The mitogenomic landscape of Banisteriopsis caapi (Malpighiaceae), the sacred liana used for ayahuasca preparation
Genetics and Molecular Biology – January 01, 2024
Source: OpenAlex
Summary
The complete mitochondrial genome of Banisteriopsis caapi, a key ingredient in the sacred ayahuasca brew, spans 503,502 base pairs. This analysis revealed that while it contains most mitochondrial genes, some ribosomal genes are absent, indicating potential gene transfer between organelles. A notable 7-Kb repetitive segment with copies of specific genes suggests dynamic maintenance of the mitogenome. Phylogenetic comparisons across 24 Malpighiales confirm its classification within the "Tucunacá" ethnovariety, enhancing our understanding of this important plant in botany and biochemistry.
Abstract
The sacred ayahuasca brew, utilized by indigenous communities in the Amazon and syncretic religious groups in Brazil, primarily consists of a decoction of two plants: (i) the Amazonian liana known as Mariri or Jagube (Banisteriopsis caapi), and (ii) the shrub referred as Chacrona or Rainha (Psychotria viridis). While Chacrona leaves are rich in N,N-Dimethyltryptamine (DMT), a potent psychedelic, the macerated vine of Mariri provides beta-carboline alkaloids acting as monoamine oxidase inhibitors, preventing DMT's degradation. This study sequenced, assembled, and analyzed the complete genome of B. caapi's mitochondrion, yielding a circular structure spanning 503,502 bp. Although the mtDNA encompasses most plant mitochondrial genes, it lacks some ribosomal genes, presents some atypical genes, and contains plastid pseudogenes, suggesting gene transfer between organelles. The presence of a 7-Kb repetitive segment containing copies of the rrnL and trnfM genes suggests mitogenome isomerization, supporting the hypothesis of dynamic mitogenome maintenance in plants. Phylogenetics and phylogenomics across 24 Malpighiales confirms the sample's placement in the "Tucunacá" ethnovariety, aligning with morphological identification. This study spearheads efforts to decode the genome of this esteemed Malpighiaceae.