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All Journal Biodiversitas Journal of Biological Diversity Nusantara Bioscience
MIFTAHUDIN MIFTAHUDIN
Department of Biology, Faculty of Mathematics and Natural Sciences, Institut Pertanian Bogor. Jl. Raya Dramaga, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Other

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Putative occurrence of amentoflavone across Selaginella species inferred from HPLC Retention Time analysis AHMAD DWI SETYAWAN; TATIK CHIKMAWATI; MIFTAHUDIN MIFTAHUDIN; PUSPA DEWI N. LOTULUNG; SUTARNO SUTARNO; SUGIYARTO SUGIYARTO; SUNARTO SUNARTO
Biodiversitas Journal of Biological Diversity Vol. 26 No. 12 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d261246

Abstract

Abstract. Setyawan AD, Chikmawati T, Miftahudin, Lotulung PDN, Sutarno, Sugiyarto, Sunarto. 2025. Putative occurrence of amentoflavone across Selaginella species inferred from HPLC Retention Time analysis. Biodiversitas 26: 6490-6501. Amentoflavone is a prominent biflavonoid frequently reported in the genus Selaginella and widely studied for its diverse biological activities. However, information on its distribution across species remains fragmented and largely restricted to isolated reports on individual taxa. This study aims to provide a comparative, compound-centric assessment of the putative occurrence of amentoflavone across multiple Selaginella species using a standardized Retention Time (RT)-based HPLC approach. Plant materials representing 20 samples from 17 Selaginella species were analyzed under uniform extraction and chromatographic conditions. An authentic amentoflavone reference standard was used to establish an external RT benchmark, and chromatograms recorded at 270 nm were qualitatively evaluated for RT correspondence within a predefined RT screening window centered on the reference peak. Occurrence was assessed using a presence–absence framework without quantitative estimation or multivariate analysis. Putative RT correspondence consistent with amentoflavone was detected in 9 of the 17 analyzed species, while several taxa consistently lacked detectable RT-matched peaks. The observed RT ranges among positive species were narrowly clustered, indicating stable chromatographic behavior of the detected signal across different plant matrices. Intraspecific comparisons revealed contrasting presence–absence outcomes among populations of the same species, highlighting population-level variability in detectable compound occurrence. The results demonstrate that putative amentoflavone occurrence in Selaginella is species-specific and not universally distributed across the genus. This study underscores the value of RT-based HPLC as an exploratory, hypothesis-generating screening tool for mapping compound occurrence across diverse taxa, while explicitly acknowledging its limitations in structural confirmation and sensitivity. By providing a qualitative baseline, this screening-based framework offers an initial biotechnological entry point for prioritizing Selaginella taxa for targeted metabolite validation and subsequent investigation using structure-confirming analytical techniques.
Taxonomic reassessment of the Selaginella flora of Java, Indonesia AHMAD DWI SETYAWAN; TATIK CHIKMAWATI; MIFTAHUDIN MIFTAHUDIN; SUTARNO SUTARNO; SUGIYARTO SUGIYARTO; SUNARTO SUNARTO
Biodiversitas Journal of Biological Diversity Vol. 27 No. 2 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270239

Abstract

Abstract. Setyawan AD, Chikmawati T, Miftahudin, Sutarno, Sugiyarto, Sunarto. 2026. Taxonomic reassessment of the Selaginella flora of Java, Indonesia. Biodiversitas 27 (2): d270239. https://doi.org/10.13057/biodiv/d270239. Selaginella Beauv. is one of the most taxonomically complex lycophyte genera in tropical Asia, and species delimitation in Java has long been complicated by extensive morphological variation, nomenclatural inconsistency, and contrasting taxonomic interpretations. This study provides a comprehensive floristic and taxonomic reassessment of Selaginella in Java based on 1,962 occurrence records from field surveys and herbarium collections. Species diversity, distribution patterns, and taxonomic relationships were evaluated using comparative morphology, ecological evidence, herbarium examination, and contemporary nomenclatural standardization. A total of 21 species are recognized, including 19 native taxa and two introduced or naturalized species (S. kraussiana and S. uncinata). Updated diagnostic descriptions and identification keys are provided, and several problematic taxa are reassessed. Selaginella ascendens and S. springiana are interpreted within the S. intermedia complex, whereas S. caudata and S. caulescens are treated within the S. plana and S. involvens complexes, respectively. Several vegetative characters traditionally used for species delimitation, including branch flattening, foliage density, and leaf overlap, were found to be highly variable and environmentally responsive, whereas stem pubescence, aristate leaf apices, and certain growth-form characteristics remain more reliable for identification. Floristic comparisons indicate strong affinities between the Javan Selaginella flora and other regions of Sundaland, particularly Sumatra and Peninsular Malaysia, together with secondary connections to Wallacea and the broader tropical and subtropical regions of Asia. The study provides an updated checklist, identification framework, and taxonomic baseline for future ecological, biogeographical, and evolutionary research on Asian Selaginella.
Revisiting Selaginella diversity in Java (Indonesia) through combined ecological and taxonomic reassessment AHMAD DWI SETYAWAN; TATIK CHIKMAWATI; MIFTAHUDIN MIFTAHUDIN; SUTARNO SUTARNO; SUGIYARTO SUGIYARTO; SUNARTO SUNARTO
Biodiversitas Journal of Biological Diversity Vol. 27 No. 1 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270150

Abstract

Abstract. Setyawan AD, Chikmawati T, Miftahudin, Sutarno, Sugiyarto, Sunarto. 2026. Revisiting Selaginella diversity in Java (Indonesia) through combined ecological and taxonomic reassessment. Biodiversitas 27 (1): d270150. https://doi.org/10.13057/biodiv/d270150. Selaginella species have traditionally been distinguished mainly by vegetative traits. Because these traits vary with environmental conditions, the taxonomy of this lycophyte genus has remained complex, especially in tropical Asia. In Java, species diversity estimates remain inconsistent among classical floristic treatments, global databases, and recent field observations. This study reassessed Selaginella diversity in Java using field surveys, herbarium examination, taxonomic standardization, and ecological analyses. A total of 1,962 occurrence records were compiled across multiple habitat types and elevational zones. Species identities were verified through comparison of field collections, herbarium specimens, and published taxonomic references. Ecological structuring was analyzed using descriptive habitat analysis, Principal Component Analysis (PCA), and Non-metric Multidimensional Scaling (NMDS). The reassessment recognized 21 confirmed Selaginella species in Java, consisting of 17 native non-endemic taxa, two endemic taxa, and two introduced or naturalized species. Species richness was highest in humid submontane forests, whereas disturbed habitats contained simplified assemblages dominated by ecological generalists. NMDS analysis indicated significant habitat differentiation (ANOSIM: R = 0.684; p = 0.001 after 999 permutations), while several historically recognized taxa, including S. ascendens, S. springiana, and S. caudata, were not retained as independent species because of extensive overlap with broader species complexes. These results suggest that relying solely on vegetative morphology may overestimate Selaginella species richness in Java. This assessment updates our knowledge of Selaginella diversity in Java by integrating field observations, herbarium evidence, and ecological analyses. Conservation efforts should prioritize humid forest habitats, particularly submontane areas, which support the highest diversity and several habitat-specialist Selaginella species.
Short Communication: Exploratory AFLP-based genetic structuring among selected Selaginella species from Indonesia AHMAD DWI SETYAWAN; TATIK CHIKMAWATI; MIFTAHUDIN MIFTAHUDIN; SUTARNO SUTARNO; SUGIYARTO SUGIYARTO; SUNARTO SUNARTO; YULITA KUSUMADEWI
Nusantara Bioscience Vol. 17 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/nusbiosci/n170217

Abstract

Abstract. Setyawan AD, Chikmawati T, Miftahudin, Sutarno, Sugiyarto, Sunarto. 2025. Short Communication: Exploratory AFLP-based genetic structuring among selected Selaginella species from Indonesia. Nusantara Bioscience 17 (2): 375-386. Selaginella is one of the oldest groups of living vascular plants and helps us understand how early land plants evolved and diversified. Despite its ecological and morphological diversity, molecular data remain limited for many tropical species. This study presents an exploratory assessment of multilocus genetic structuring among selected Selaginella species using Amplified Fragment Length Polymorphism (AFLP) markers. AFLP profiles were generated using four selective primer combinations, producing a total of 248 polymorphic fragments. Genetic similarity among species was quantified using Jaccard’s coefficient, and patterns of multilocus resemblance were examined through UPGMA clustering and principal coordinate analysis (PCoA). Pairwise similarity values ranged from 0.59 to 1.00, indicating a continuum of genetic differentiation rather than sharply delimited genetic groups. UPGMA clustering and PCoA revealed two broad species assemblages and substantial variation in multilocus genetic similarity among the analyzed taxa. The clustering pattern showed partial correspondence with major growth-form categories, with predominantly creeping to ascending species grouped separately from taxa exhibiting a cypress-like habit together with S. ornata. At the same time, several morphologically distinct species exhibited relatively high AFLP similarity, highlighting both congruence and incongruence between molecular and morphological patterns. Because the final comparative analyses were based on representative AFLP profiles for each species, the results should be regarded as an exploratory overview of interspecific multilocus differentiation rather than an assessment of intraspecific variation. Although AFLP markers do not permit direct phylogenetic inference, the findings provide a useful molecular baseline for future studies employing broader sampling and sequence-based or genomic approaches. Our findings demonstrate the value of integrating multilocus AFLP data with morphological evidence to better understand genetic structuring and species relationships in Selaginella. Although exploratory in nature, this study provides a useful molecular baseline for future sequence-based and genomic investigations.
Co-Authors AHMAD DWI SETYAWAN AHMAD DWI SETYAWAN PUSPA DEWI N. LOTULUNG SUGIYARTO SUGIYARTO SUNARTO SUNARTO SUNARTO SUNARTO SUTARNO SUTARNO TATIK CHIKMAWATI YULITA KUSUMADEWI