Molecular and morphological survey of Lamiaceae species in converted landscapes in Sumatra

2022 | journal article. A publication with affiliation to the University of Göttingen.

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​Molecular and morphological survey of Lamiaceae species in converted landscapes in Sumatra​
Halmschlag, C. B.; Carneiro de Melo Moura, C.; Brambach, F. ; Siregar, I. Z. & Gailing, O. ​ (2022) 
PLoS One17(12) art. e0277749​.​ DOI: 

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Halmschlag, Caitriona Brady; Carneiro de Melo Moura, Carina; Brambach, Fabian ; Siregar, Iskandar Z.; Gailing, Oliver 
Molecular biodiversity surveys have been increasingly applied in hyperdiverse tropical regions as an efficient tool for rapid species assessment of partially undiscovered fauna and flora. This is done by overcoming shortfalls in knowledge or availability of reproductive structures during the sampling period, which often represents a bottleneck for accurate specimens’ identification. DNA sequencing technology is intensifying species discovery, and in combination with morphological identification, has been filling gaps in taxonomic knowledge and facilitating species inventories of tropical ecosystems. This study aimed to apply morphological taxonomy and DNA barcoding to assess the occurrence of Lamiaceae species in converted land-use systems (old-growth forest, jungle rubber, rubber, and oil palm) in Sumatra, Indonesia. In this species inventory, we detected 89 specimens of Lamiaceae from 18 species distributed in seven subfamilies from the Lamiaceae group. One third of the species identified in this study lacked sequences in the reference database for at least one of the markers used ( matK , rbcL , and ITS). The three loci species-tree recovered a total of 12 out of the 18 species as monophyletic lineages and can be employed as a suitable approach for molecular species assignment in Lamiaceae. However, for taxa with a low level of interspecific genetic distance in the barcode regions used in this study, such as Vitex gamosepala Griff. and V . vestita Wall. ex Walp., or Callicarpa pentandra Roxb. and C . candidans (Burm.f.) Hochr., the use of traditional taxonomy remains indispensable. A change in species composition and decline in abundance is associated with an increase in land-use intensification at the family level (i.e., Lamiaceae), and this tendency might be constant across other plant families. For this reason, the maintenance of forest genetic resources needs to be considered for sustainable agricultural production, especially in hyperdiverse tropical regions. Additionally, with this change in species composition, accurate species identification throughout molecular assignments will become more important for conservation planning.
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PLoS One 
Fakultät für Forstwissenschaften und Waldökologie ; Burckhardt-Institut ; Abteilung Biodiversität, Makroökologie und Biogeographie ; Zentrum für Biodiversität und Nachhaltige Landnutzung 
Open-Access-Publikationsfonds 2023



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