4.7 Article

The Treasure Vault Can be Opened: Large-Scale Genome Skimming Works Well Using Herbarium and Silica Gel Dried Material

期刊

PLANTS-BASEL
卷 9, 期 4, 页码 -

出版社

MDPI
DOI: 10.3390/plants9040432

关键词

alpine; chloroplast DNA; environmental DNA; ITS; matK; nuclear ribosomal DNA; plant DNA barcode; phylogenomic; polar; rbcL

资金

  1. Research Council of Norway [226134/F50]
  2. Norwegian Biodiversity Information Centre [14-14, 70184209]
  3. internal PhD position at Tromso Museum
  4. European Research Council under the European Community's Seventh Framework Programme FP7/2007-2013 grant [281422]
  5. Sixth European Framework Programme [GOCE-CT-2007-036866]
  6. Swiss SNF [31003A_149508/1]
  7. ANR DIVERSITALP Project [ANR-07-BDIV-014]
  8. France Genomique [ANR-10-INBS-09-08]
  9. NextBarcode project (Institut Francais de Bioinformatique)
  10. ODYSSEE project [ANR-13-ISV7-0004, PN-II-ID-JRP-RO-FR-2012]
  11. BioDivMount project (BRANCUSI) [32660WB, PN-II-CT-ROFR-2014-2-0011]
  12. ANR France
  13. UEFISCDI Romania
  14. Romanian Ministry of Education, CNCS-UEFISCDI [PN-II-RU-PD-2012-3-0636]
  15. BIODIVERS financing programme

向作者/读者索取更多资源

Genome skimming has the potential for generating large data sets for DNA barcoding and wider biodiversity genomic studies, particularly via the assembly and annotation of full chloroplast (cpDNA) and nuclear ribosomal DNA (nrDNA) sequences. We compare the success of genome skims of 2051 herbarium specimens from Norway/Polar regions with 4604 freshly collected, silica gel dried specimens mainly from the European Alps and the Carpathians. Overall, we were able to assemble the full chloroplast genome for 67% of the samples and the full nrDNA cluster for 86%. Average insert length, cover and full cpDNA and rDNA assembly were considerably higher for silica gel dried than herbarium-preserved material. However, complete plastid genomes were still assembled for 54% of herbarium samples compared to 70% of silica dried samples. Moreover, there was comparable recovery of coding genes from both tissue sources (121 for silica gel dried and 118 for herbarium material) and only minor differences in assembly success of standard barcodes between silica dried (89% ITS2, 96% matK and rbcL) and herbarium material (87% ITS2, 98% matK and rbcL). The success rate was > 90% for all three markers in 1034 of 1036 genera in 160 families, and only Boraginaceae worked poorly, with 7 genera failing. Our study shows that large-scale genome skims are feasible and work well across most of the land plant families and genera we tested, independently of material type. It is therefore an efficient method for increasing the availability of plant biodiversity genomic data to support a multitude of downstream applications.

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