The complete chloroplast genome of the endangered species garra de león [Bomarea ovallei (Phil.) Ravenna] from Chile

Contreras-Díaz, Roberto; Mamani, Wilson Huanca; Brink, Liesbeth van den; Fuentes, Maria N.; Aburto, Mariana Arias

doi:10.31742/isgpb.82.3.14

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Lately, the use of complete chloroplast genome as a "super-barcoding" method has become an excellent approach allowing for the increase of the phylogenetic resolution at lower taxonomic levels in plants 19,20 . However, in the Atacama Desert only a few plastomes of the native and endemic herbaceous plants 21,22 , shrubs 23,24 and leguminous trees 25,26 have been characterized so far.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the complete plastid genomes of desert trees Neltuma and Strombocarpa genera

Contreras-Díaz,

Carevic,

Brink

et al. 2023

Preprint

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Neltuma alba (Algarrobo blanco), Neltuma chilensis (Algarrobo Chileno) and Strombocarpa strombulifera (Fortuna) are some of the few trees found in small highly fragmented populations, throughout the Atacama Desert, indicating their drought resistance. We found that the complete chloroplast genomes of N. alba and N. chilensis are larger in size compared to species of the Strombocarpa genus. However, the Strombocarpa species presented slightly more GC content than the Neltuma species. Therefore, we assume that Strombocarpa species have been exposed to stronger evolution than Neltuma species. We observed high variation values in the number of cpSSRs (chloroplast simple sequence repeats) and repeated elements among Neltuma and Strombocarpa species. Very low nucleotide diversity values were found in Neltuma, while ten highly variable regions found in Strombocarpa, can likely be used to resolve uncertainties in phylogeny, and for DNA barcoding. Although in general our study supports the phylogeny of other studies, the biggest inconsistency was the nesting of Prosopis cineraria within the Neltuma clade and showed a divergence time of 1.85 Mya. With this study we provide valuable information about isolated populations of tree species that provide important ecosystem services in hostile environments before they disappear, due to an ongoing fragmentation of their populations.

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Section: Introductionmentioning

confidence: 99%

Comparative analysis of the complete plastid genomes of desert trees Neltuma and Strombocarpa genera

Contreras-Díaz,

Carevic,

Brink

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Structure, gene composition, divergence time and phylogeny analysis of the woody desert species Neltuma alba, Neltuma chilensis and Strombocarpa strombulifera

Contreras-Díaz,

Carevic,

van den Brink

et al. 2024

Sci Rep

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Neltuma alba (Algarrobo blanco), Neltuma chilensis (Algarrobo Chileno) and Strombocarpa strombulifera (Fortuna) are some of the few drought resistant trees and shrubs found in small highly fragmented populations, throughout the Atacama Desert. We reconstructed their plastid genomes using de novo assembly of paired-end reads from total genomic DNA. We found that the complete plastid genomes of N. alba and N. chilensis are larger in size compared to species of the Strombocarpa genus. The Strombocarpa species presented slightly more GC content than the Neltuma species. Therefore, we assume that Strombocarpa species have been exposed to stronger natural selection than Neltuma species. We observed high variation values in the number of cpSSRs (chloroplast simple sequence repeats) and repeated elements among Neltuma and Strombocarpa species. The p-distance results showed a low evolutionary divergence within the genus Neltuma, whereas a high evolutionary divergence was observed between Strombocarpa species. The molecular divergence time found in Neltuma and Strombocarpa show that these genera diverged in the late Oligocene. With this study we provide valuable information about tree species that provide important ecosystem services in hostile environments which can be used to determine these species in the geographically isolated communities, and keep the highly fragmented populations genetically healthy.

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The complete chloroplast genome of the endangered species garra de león [Bomarea ovallei (Phil.) Ravenna] from Chile

Cited by 2 publications

References 15 publications

Comparative analysis of the complete plastid genomes of desert trees Neltuma and Strombocarpa genera

Comparative analysis of the complete plastid genomes of desert trees Neltuma and Strombocarpa genera

Structure, gene composition, divergence time and phylogeny analysis of the woody desert species Neltuma alba, Neltuma chilensis and Strombocarpa strombulifera

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