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Cinchona calisaya

ABSTRACT: Cinchona calisaya overview

PROVIDER: PRJNA205879 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1021741_1.fastq.gz	Fastqsanger.gz
	SRR1021741_2.fastq.gz	Fastqsanger.gz
	SRR1023176.fastq.gz	Fastqsanger.gz
	SRR30906184_1.fastq.gz	Fastqsanger.gz
	SRR30906184_2.fastq.gz	Fastqsanger.gz

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Phylogeny Predicts the Quantity of Antimalarial Alkaloids within the Iconic Yellow <i>Cinchona</i> Bark (Rubiaceae: <i>Cinchona calisaya</i>).

Project description:Considerable inter- and intraspecific variation with respect to the quantity and composition of plant natural products exists. The processes that drive this variation remain largely unknown. Understanding which factors determine chemical diversity has the potential to shed light on plant defenses against herbivores and diseases and accelerate drug discovery. For centuries, Cinchona alkaloids were the primary treatment of malaria. Using Cinchona calisaya as a model, we generated genetic profiles of leaf samples from four plastid (trnL-F, matK, rps16, and ndhF) and one nuclear (ITS) DNA regions from twenty-two C. calisaya stands sampled in the Yungas region of Bolivia. Climatic and soil parameters were characterized and bark samples were analyzed for content of the four major alkaloids using HPLC-UV to explore the utility of evolutionary history (phylogeny) in determining variation within species of these compounds under natural conditions. A significant phylogenetic signal was found for the content of two out of four major Cinchona alkaloids (quinine and cinchonidine) and their total content. Climatic parameters, primarily driven by changing altitude, predicted 20.2% of the overall alkaloid variation, and geographical separation accounted for a further 9.7%. A clade of high alkaloid producing trees was identified that spanned a narrow range of altitudes, from 1,100 to 1,350 m. However, climate expressed by altitude was not a significant driver when accounting for phylogeny, suggesting that the chemical diversity is primarily driven by phylogeny. Comparisons of the relative effects of both environmental and genetic variability in determining plant chemical diversity have scarcely been performed at the genotypic level. In this study we demonstrate there is an essential need to do so if the extensive genotypic variation in plant biochemistry is to be fully understood.

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A near-complete genome assembly of Cinchona calisaya.

Project description:Rubiaceae plants are globally widespread and possess significant economic and medicinal value. Such as the globally important crop of coffee, and Cinchona calisaya Wedd., which is rich in alkaloids, is an important medicinal resource for treating malaria. In recent years, several genome resources of Rubiaceae have been reported. However, the comprehensive phylogenetic relationships of Rubiaceae are still unknown. In this study, we present a nearly complete diploid genome assembly of C. calisaya, characterized by a genome size of 869.93 Mb, and contig N50 length of 44.34 Mb. Notably, 99.75% of the sequences have been successfully anchored to 17 chromosomes, with only 12 gaps remaining. BUSCO assessment indicates that 97.40% of complete core genes are present in the assembly. We identified a total of 42,741 protein-coding genes, among which 38,022 (89.00%) have received functional annotation. The high continuity and integrity of the C. calisaya genome provide a robust foundation for functional genomics research, varietal improvement, and the conservation of genomic resources in medicinal plants.

| S-EPMC11751077 | biostudies-literature

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