Preprint Article Version 2 This version is not peer-reviewed

Automated ISSR Fingerprinting is a Cost-effective way to assess Genetic Diversity and Taxonomic Differentiation – a Case Study on the Encephalartos eugene-maraisii Species Complex

Version 1 : Received: 18 April 2024 / Approved: 18 April 2024 / Online: 18 April 2024 (13:38:21 CEST)
Version 2 : Received: 12 July 2024 / Approved: 12 July 2024 / Online: 15 July 2024 (13:00:58 CEST)

How to cite: Murphy, D.; Barker, N. P.; Frisby, A. Automated ISSR Fingerprinting is a Cost-effective way to assess Genetic Diversity and Taxonomic Differentiation – a Case Study on the Encephalartos eugene-maraisii Species Complex. Preprints 2024, 2024041263. https://doi.org/10.20944/preprints202404.1263.v2 Murphy, D.; Barker, N. P.; Frisby, A. Automated ISSR Fingerprinting is a Cost-effective way to assess Genetic Diversity and Taxonomic Differentiation – a Case Study on the Encephalartos eugene-maraisii Species Complex. Preprints 2024, 2024041263. https://doi.org/10.20944/preprints202404.1263.v2

Abstract

Recent technological advancements in conservation genetics and genomics have resulted in diverse tools for aiding conservation of species. The precision and resolution of high throughput sequencing technologies provide valuable insights to aid conservation decisions, but these technologies are often financially unfeasible or unavailable in resource constrained countries. Inter-Simple Sequence Repeat (ISSR) markers, when combined with sensitive automated detection systems, provide a simple, cheap means to investigate genetic diversity and discriminate closely related species. Here we apply this technology to assess genetic diversity and taxonomic delimitation in the Encephalartos eugene-maraisii species complex, a highly threatened, taxonomically dubious group of cycads in South Africa. Our analyses support taxonomic singularity of E. dyerianus, E. dolomiticus and E. eugene-maraisii. Relationships between E. nubimontanus and E. cupidus remain uncertain. E. middelburgensis samples showed no clustering but had poor amplification success. This study demonstrates the suitability of automated ISSR fingerprinting as a method for plant conservation studies, especially in resource-constrained countries, and we make recommendations as to how this methodology can be effectively implemented.

Keywords

cycad; ISSR; conservation genetics; species complex; developing countries; technological impediment

Subject

Biology and Life Sciences, Plant Sciences

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