How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?

Societal Impact Statement Clarifying species status for closely related taxa with similar and overlapping morphology is important for planning conservation efforts. Conservation of Rafflesia goes beyond merely saving species from extinction. It has far‐reaching societal impacts that touch on scienti...

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Main Authors: Yayan Wahyu C. Kusuma, Ayumi Matsuo, Stefan Wanke, Yoshihisa Suyama, Yuji Isagi
Format: Article
Language:English
Published: Wiley 2025-03-01
Series:Plants, People, Planet
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Online Access:https://doi.org/10.1002/ppp3.10447
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author Yayan Wahyu C. Kusuma
Ayumi Matsuo
Stefan Wanke
Yoshihisa Suyama
Yuji Isagi
author_facet Yayan Wahyu C. Kusuma
Ayumi Matsuo
Stefan Wanke
Yoshihisa Suyama
Yuji Isagi
author_sort Yayan Wahyu C. Kusuma
collection DOAJ
description Societal Impact Statement Clarifying species status for closely related taxa with similar and overlapping morphology is important for planning conservation efforts. Conservation of Rafflesia goes beyond merely saving species from extinction. It has far‐reaching societal impacts that touch on scientific discovery, cultural heritage, economic development, education, and more. Rafflesia interests many nature lovers, and so protected areas that preserve Rafflesia can become tourism hotspots, contributing to local economies and livelihoods. By conserving biodiversity, we acknowledge and value the interdependence of all living organisms, promoting a holistic understanding of nature. Biodiversity conservation is an investment in the health and well‐being of both ecosystems and human societies. Summary Species ambiguity could hinder conservation activities. Rafflesia is an endangered, holoparasitic, and endophytic plant genus that grows exclusively on Tetrastigma (Vitaceae) host plants. Overlapping morphological characters make their species delimitation difficult. Therefore, the number of Rafflesia species has been a major debate until now. On the island of Java, Indonesia, two or three species have been variously recognized. Here, we aim to illuminate the species status using single nucleotide polymorphisms (SNPs) marker obtained via a multiplexed ISSR genotyping by sequencing (MIG‐seq) approach. Clustering analysis with STRUCTURE indicates three different groups. Furthermore, the delimitation of the Javanese Rafflesia into three species is the favored model based on SNAPPER analysis. Phylogenetic analysis using Randomized Axelerated Maximum Likelihood (RAxML) also supports the distinction of the three groups. Although a SplitsTree4 analysis confirms the abovementioned results, it also highlights that Rafflesia patma shows broader gene flow compared to the other two species R. rochusenii and R. zollingeriana. We conclude that there are likely three species of Rafflesia on Java. Our study highlights the ability of using SNPs markers, in this case derived from a MIG‐seq approach, in approaching species uncertainty. The importance of clarifying the Rafflesia species status on Java Island for conservation planning is also discussed.
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spelling doaj-art-b72567dcbd2949369ed18c35459cbcab2025-08-20T02:21:13ZengWileyPlants, People, Planet2572-26112025-03-017246747510.1002/ppp3.10447How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?Yayan Wahyu C. Kusuma0Ayumi Matsuo1Stefan Wanke2Yoshihisa Suyama3Yuji Isagi4Research Center for Ecology and Ethnobiology, National Research and Innovation Agency Bogor IndonesiaKawatabi Field Science Center, Graduate School of Agricultural Science Tohoku University Osaki JapanInstitut für Botanik, Fakultät Biologie Technische Universität Dresden Dresden GermanyKawatabi Field Science Center, Graduate School of Agricultural Science Tohoku University Osaki JapanLaboratory of Forest Biology, Graduate School of Agriculture Kyoto University Kyoto JapanSocietal Impact Statement Clarifying species status for closely related taxa with similar and overlapping morphology is important for planning conservation efforts. Conservation of Rafflesia goes beyond merely saving species from extinction. It has far‐reaching societal impacts that touch on scientific discovery, cultural heritage, economic development, education, and more. Rafflesia interests many nature lovers, and so protected areas that preserve Rafflesia can become tourism hotspots, contributing to local economies and livelihoods. By conserving biodiversity, we acknowledge and value the interdependence of all living organisms, promoting a holistic understanding of nature. Biodiversity conservation is an investment in the health and well‐being of both ecosystems and human societies. Summary Species ambiguity could hinder conservation activities. Rafflesia is an endangered, holoparasitic, and endophytic plant genus that grows exclusively on Tetrastigma (Vitaceae) host plants. Overlapping morphological characters make their species delimitation difficult. Therefore, the number of Rafflesia species has been a major debate until now. On the island of Java, Indonesia, two or three species have been variously recognized. Here, we aim to illuminate the species status using single nucleotide polymorphisms (SNPs) marker obtained via a multiplexed ISSR genotyping by sequencing (MIG‐seq) approach. Clustering analysis with STRUCTURE indicates three different groups. Furthermore, the delimitation of the Javanese Rafflesia into three species is the favored model based on SNAPPER analysis. Phylogenetic analysis using Randomized Axelerated Maximum Likelihood (RAxML) also supports the distinction of the three groups. Although a SplitsTree4 analysis confirms the abovementioned results, it also highlights that Rafflesia patma shows broader gene flow compared to the other two species R. rochusenii and R. zollingeriana. We conclude that there are likely three species of Rafflesia on Java. Our study highlights the ability of using SNPs markers, in this case derived from a MIG‐seq approach, in approaching species uncertainty. The importance of clarifying the Rafflesia species status on Java Island for conservation planning is also discussed.https://doi.org/10.1002/ppp3.10447conservationparasitic plantsRafflesiaspecies delimitationspecies status
spellingShingle Yayan Wahyu C. Kusuma
Ayumi Matsuo
Stefan Wanke
Yoshihisa Suyama
Yuji Isagi
How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?
Plants, People, Planet
conservation
parasitic plants
Rafflesia
species delimitation
species status
title How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?
title_full How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?
title_fullStr How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?
title_full_unstemmed How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?
title_short How many species of Rafflesia exist in Java, Indonesia and what are the implications for conservation?
title_sort how many species of rafflesia exist in java indonesia and what are the implications for conservation
topic conservation
parasitic plants
Rafflesia
species delimitation
species status
url https://doi.org/10.1002/ppp3.10447
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