Search Results (188)

The genus Curcuma (Zingiberaceae) is a diverse group of plants widely distributed across tropical Asia, with several new species recently described in Thailand. This study documents and clarifies the taxonomic status of a new species, Curcuma nivea Saensouk, P.Saensouk & Boonma sp. nov., discovered in eastern Thailand, and evaluates its horticultural potential. Morphological comparisons were conducted with closely related species in the Curcuma subgenus Hitcheniopsis (Baker) K. Schum., focusing on diagnostic vegetative and floral traits. Curcuma nivea is characterized by its compact habit and white flowers marked with two reddish lines at the base of the labellum, lacking the yellow blotch typical of related species. Additionally, it shows the absence of both epigynous glands and anther spurs, consistent with subgeneric features. Its distinctive morphology and attractive floral display have led to its cultivation as an ornamental pot plant. The discovery of C. nivea contributes to the growing documentation of Curcuma diversity in Thailand and underscores the significance of ongoing botanical exploration and conservation. Furthermore, its compact form and unique floral traits highlight its promise for use in ornamental horticulture and breeding programs. Full article

Wild edible fruit plants are integral to the cultural, nutritional, medicinal, and economic practices of Indigenous Isan communities in Roi Et Province, northeastern Thailand, a region characterized by plateau and lowland topography and a tropical monsoon climate. This study aimed to document the diversity, traditional uses, phenology, and conservation status of these species to inform sustainable management and conservation efforts. Field surveys and ethnobotanical interviews with 200 informants (100 men, 100 women; random ages) were conducted across 20 local communities to identify species diversity and usage patterns, while phenological observations and conservation assessments were performed to understand reproductive cycles and species vulnerability between January and December 2023. A total of 68 species from 32 families were recorded, with peak flowering in March–April and fruiting in May–June. Analyses of Species Use Value (0.19–0.48) and Relative Frequency of Citation (0.15–0.44) identified key species with significant roles in food security and traditional medicine. Uvaria rufa had the highest SUV (0.48) and RFC (0.44). Informant consensus on medicinal applications was strong for ailments such as gastrointestinal and lymphatic disorders. Economically important species were also identified, with some contributing notable income through local trade. Conservation proposed one species as Critically Endangered and several others as Vulnerable. The results highlight the need for integrated conservation strategies, including community-based initiatives and recognition of Other Effective area-based Conservation Measures (OECMs), to ensure the preservation of biodiversity, traditional knowledge, and local livelihoods. Full article

The Bignoniaceae family encompasses numerous species of ecological, medicinal, and cultural significance, yet its ethnobotanical value remains underexplored in many regions of Thailand. This study investigates the diversity, phenology, cultural relevance, and traditional uses of Bignoniaceae species in Maha Sarakham Province, Northeastern Thailand. Through semi-structured interviews with 260 local informants across 13 districts—alongside field observations and herbarium voucher collections—we documented 27 species across 21 genera. These integrated methods enabled the identification of key culturally significant species and provided insights into their traditional uses. Phenological data revealed clear seasonal patterns in flowering and fruiting, aligned with the regional climatic cycle. Quantitative ethnobotanical indices—including Species Use Value (SUV), Genera Use Value (GUV), Relative Frequency of Citation (RFC), Cultural Importance Index (CI), and Cultural Food Significance Index (CFSI)—were employed to evaluate species significance. Results indicate that species such as Dolichandrone serrulata, D. spathacea, and Oroxylum indicum hold high cultural and practical value, particularly in traditional medicine, spiritual practices, and local landscaping. These findings underscore the critical role of Bignoniaceae in sustaining biocultural diversity and emphasize the urgency of preserving traditional botanical knowledge amid environmental and socio-economic change. Moreover, the insights contribute to broader efforts in cultural heritage preservation and biodiversity conservation across tropical and subtropical regions. Full article

This study reports seven new records of Curcuma L. (Zingiberaceae) for the flora of Laos: Curcuma comosa Roxb., C. pedicellata (Chaveer. & Mokkamul) Škorničk., C. phrayawan Boonma & Saensouk, C. pierreana Gagnep., C. rangjued Saensouk & Boonma, C. sabhasrii Saensouk, Maknoi, Wongnak & Rakarcha, and C. wanenlueanga Saensouk, Thomudtha & Boonma. Field surveys were conducted across various habitats in Laos, and species identification was confirmed through morphological comparisons with type specimens and protologues. An identification key for Curcuma species in Laos is provided to facilitate future taxonomic studies. Additionally, the lectotypification of C. comosa Roxb. is designated to ensure nomenclatural stability and clarify its taxonomic placement. The discovery of these species expands the known distribution of Curcuma in Indochina and highlights the importance of continued floristic exploration in understudied regions. These findings emphasize the need for biodiversity conservation, particularly in the nnatural habitats where these species occur. Furthermore, some of the newly recorded species exhibit attractive floral characteristics, making them valuable for sustainable horticultural applications, especially in ornamental plant cultivation. This study underscores the significance of taxonomic research in documenting regional flora, supporting conservation efforts, and promoting the sustainable utilization of plant diversity. Full article

Ethnobotanical knowledge and biodiversity are critical components of sustainable natural resource management, especially in regions undergoing rapid environmental and socio-economic change. In Northeast Thailand, traditional plant knowledge is deeply intertwined with local cultural identity but faces increasing threats from urbanization, agricultural expansion, and generational shifts. This study presents a floristic and ethnobotanical survey of the Khanthararat Public Benefit Forest, a community-managed remnant forest in Maha Sarakham Province, documenting 110 plant species from 42 families. The Fabaceae family was the most diverse, consistent with other tropical ecosystems. Predominantly native species (85.45%) indicate minimal disturbance, while introduced (11.82%) and endemic species (2.73%) reflect ecological complexity. Ethnobotanical data revealed 34 wild edible species, 33 medicinal plants, and 19 ornamental species used by the local community, highlighting the forest’s vital role in supporting livelihoods and cultural practices. High Use Values (UVs) for species such as Spondias pinnata and Coccinia grandis underline their dual importance in food and medicine. Informant Consensus Factor (Fic) values demonstrate strong agreement on plant use for reproductive and musculoskeletal health, reflecting well-established traditional knowledge. The findings underscore the forest’s dual significance as an ecological hotspot and a repository of cultural heritage, providing essential ecosystem services including biodiversity conservation, climate regulation, and cultural provisioning. By integrating traditional knowledge with biodiversity assessment, this study offers valuable insights for community-based conservation strategies that sustain both ecological integrity and cultural resilience in Northeast Thailand. Full article

This study explores the ethnobotanical significance of plant species used in the Heet Sip Song (Twelve Monthly Merit-Making) ceremonies in Roi Et Province, Northeastern Thailand. A total of 80 plant species across 73 genera and 42 families were documented. The findings reveal that plants play multifaceted roles in ceremonial life, serving both symbolic and practical purposes rooted in spiritual belief systems and seasonal agricultural cycles. Quantitative analyses using Cultural Significance Index (CSI), Species Use Value (SUV), Genera Use Value (GUV), and Relative Frequency of Citation (RFC) highlighted the prominence of key species such as Oryza sativa, Musa acuminata, and Saccharum officinarum in ritual contexts. While staple crops dominate in frequency and cultural value, less commonly cited wild species fulfill specialized functions, reflecting deep local ecological knowledge. The integration of ritual and plant use promotes biodiversity conservation by maintaining plant populations and reinforcing sustainable harvesting practices. These results emphasize the vital role of traditional knowledge in conserving both biological and cultural diversity. As environmental pressures increase, this study underscores the importance of supporting community-led conservation efforts that honor indigenous practices and their contributions to ecological resilience. Full article

Type 2 diabetes mellitus (T2 DM) is a global health issue linked to high morbidity and mortality due to complications such as cardiovascular disease and nephropathy. Conventional treatments often have side effects and limited glycemic control, leading to interest in alternative therapies. Plants from the Zingiberaceae and Berberidaceae families, traditionally used for their anti-diabetic properties, have emerged as potential adjuncts. This meta-analysis evaluates and compares their efficacy in improving glycemic control in individuals with T2 DM. A systematic literature search, following PRISMA guidelines, was conducted in PubMed, Web of Science, SCOPUS, and Cochrane, identifying 1269 studies, of which 58 met inclusion criteria. Only randomized controlled trials assessing effects on fasting blood glucose (FBS), HbA1c, fasting insulin, and HOMA-IR were included. Study quality and risk of bias were assessed using Cochrane’s RoB 2.0 tool. The review is registered in PROS-PERO (CRD42024516261). The analysis showed significant reductions in FBS (−1.06; 95% CI: −1.42 to −0.71), HbA1c (−1.42; 95% CI: −2.64 to −0.19), and fasting insulin (−0.75; 95% CI: −1.13 to −0.38) among participants using plant extracts, with stronger effects observed for the Berberidaceae species. HOMA-IR also decreased, indicating enhanced insulin sensitivity. While Berberidaceae showed higher effect sizes, Zingiberaceae species provided more consistent outcomes. Further research with standardized protocols is needed to confirm these results. Full article

Amomum villosum (A. villosum) Lour., a medicinal species of the Zingiberaceae family, is used for medical purposes. Bornyl acetate, camphor, and borneol are the main bioactive ingredients in A. villosum fruit, and the amount of bornyl acetate is regarded as a measure of the fruit’s quality. In order to explore the major effective genes regulating the biosynthesis of camphane volatile terpenes in A. villosum, some DEGs involved in camphane volatile terpene biosynthesis and transcription factors were analyzed and summarized in this study. The result showed that the content of bornyl acetate was altered in the different growth stages. In particular, the significant change occurred from 7 to 30 DAP (days after pollination). The content of bornyl acetate at 30 DAP was 169.3% more than that at 7 DAP. In total, 4782 up-regulated and 5284 down-regulated unigenes were found in G2 vs. G1, as well as 3324 up-regulated and 5036 down-regulated unigenes in G3 vs. G1, and 3332 up-regulated and 4490 down-regulated unigenes in G3 vs. G2. A total of 323 up-regulated and 820 down-regulated unigenes were shared in three growth stage comparisons. We screened the genes that encode the enzymes most likely to inhibit bornyl diphosphate synthase, borneol dehydrogenase, and BAHD acyltransferases. Interestingly, we found that borneol dehydrogenase and bornyl diphosphate synthase displayed bi-substrate features, suggesting that a substrate of catalyzation is promiscuity in the biosynthesis downstream pathway, and the unknown bornyl pyrophosphate hydrolase may not be the specific enzyme for borneol formation. Additionally, the DXR, HDS, and IDS found in the PPI network would assist in the understanding of molecular regulation. The results of this study constructed DGE libraries and identified key genes related to camphane volatile terpenes, which laid a foundation for a deep investigation of the mechanism of volatile terpene biosynthesis, and provided a reference for mining other key genes in A. villosum fruits. Full article

Background/Objectives: Zingiber officinale Roscoe (Zingiberaceae) is widely recognized for its diverse biological activities; however, the stability and bioavailability of its bioactive compounds remain significant challenges. This study aimed to investigate an innovative approach to enhance the stability and efficacy of Z. officinale phytoconstituents through advanced encapsulation techniques. Methods: Two novel carrier systems were developed: (i) direct micro-spray encapsulation of Z. officinale in maltodextrin (MZO) and (ii) a two-step process involving the creation of a kaolinite-based phytocarrier system (ZO–kaolinite), followed by micro-spray encapsulation in maltodextrin to form the MZO–kaolinite system. Results: Comprehensive chemical profiling using GC–MS and ESI–QTOF–MS identified 105 phytochemicals, including terpenoids, gingerols, shogaols, flavonoids, and phenolic acids. Morphostructural analyses (XRD, FTIR, Raman, SEM) confirmed the successful development of the newly engineered kaolinite carrier systems (ZO–kaolinite and MZO–kaolinite systems). Both the ZO–kaolinite and MZO–kaolinite systems exhibited superior antioxidant activity, potent antimicrobial efficacy against major bacterial pathogens (Staphylococcus aureus, Enterococcus faecalis, Bacillus cereus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli), and enhanced cytotoxicity against MCF-7, HCT-116, and HeLa cancer cell lines. Conclusions: This study underscores the synergistic action of kaolinite and maltodextrin in developing multifunctional therapeutic systems, emphasizing the importance of phytoconstituent stabilization and nanotechnology in addressing antimicrobial resistance and advancing innovative medical applications. Full article

The pathogenesis of inflammatory bowel diseases (IBD), such as ulcerative colitis and Crohn’s disease, remains incompletely understood. Amomum villosum Lour. (Zingiberaceae) is a traditional herbal medicine used across Asia to treat digestive and inflammatory disorders. This study investigated the therapeutic effects of a water extract derived from the fruits of AV (referred to as AVE) in a mouse model of colitis induced by dextran sulfate sodium (DSS). The protective effects of AVE were evaluated by monitoring changes in body weight and colon length, as well as histological and molecular markers of inflammation. Neutrophil infiltration and levels of inflammatory cytokines in colon tissue and serum were assessed, and the integrity of the intestinal epithelial barrier was examined via Western blot analysis. Treatment with AVE significantly alleviated DSS-induced colitis, as evidenced by improved body weight, longer colon length, and reduced inflammatory responses. AVE administration restored tight junction protein expression (zonula occludens-1 [ZO-1] and occludin), suppressed phosphorylation of mitogen-activated protein kinases—specifically, extracellular signal-regulated kinase (ERK) and p38—and inhibited the expression of inflammatory mediators including tumor necrosis factor-alpha (TNF-α), cyclooxygenase-2 (COX-2), interleukin (IL)-6, IL-1β, and myeloperoxidase (MPO) activity. These findings suggest that oral AVE treatment effectively protects against experimental colitis by modulating inflammatory signaling and preserving epithelial barrier integrity. Further studies are warranted to explore the clinical potential and safety of AVE in the management of IBD. Full article

Androgenetic alopecia is associated with testosterone-mediated anagen-to-catagen transition and matrix keratinocyte apoptosis in hair follicle cells. Activation of Nox isozymes is involved in testosterone-mediated keratinocyte apoptosis, leading to androgenetic alopecia. This indicates that Nox isozymes can serve as therapeutic targets for androgenetic alopecia. The isolated compounds from natural products were screened to evaluate their ROS-inhibition efficacy and it was found that 1′S-1′-acetoxychavicol acetate (ACA, 26), a natural compound isolated from Alpinia galanga (L.) Willd. (Zingiberaceae), exhibits inhibitory activity on Nox isozymes. Nox inhibition by ACA suppressed testosterone-dependent H₂O₂ generation and cell death in keratinocytes. Incubation with ACA in human hair follicle organ culture mitigated testosterone-dependent suppression of hair growth. We validated that ACA regulates androgenetic alopecia in a mouse model. Local application of ACA on the dorsal skin in an androgenetic alopecia model of C57BL/6 mice significantly suppressed testosterone-induced hair loss in a dose-dependent manner. Moreover, hair follicle length in ACA-treated mice was enhanced compared to that in control mice. These findings provide a molecular mechanism in which ACA inhibits Nox activity in hair follicle cells, indicating its potential as an effective treatment of AGA. Full article

Zingiberaceae is a diverse and culturally significant plant family across tropical Asia, yet in Roi Et Province, Thailand, it has remained poorly documented. This study aimed to provide the first comprehensive assessment of Zingiberaceae in Roi Et Province, Thailand. Previous studies in the region have been limited and did not systematically document species occurrence. The assessment began with an overview of species diversity, followed by an investigation of their ethnobotanical uses, an evaluation of their horticultural potential, and an assessment of their conservation status. Field surveys were conducted throughout Roi Et Province across various habitat types using exploratory sampling to record all observable Zingiberaceae species. Species were identified based on morphological characteristics and comparisons with existing taxonomic literature. A total of 97 species were recorded, including 86 native and 11 introduced taxa, with 23 species endemic to Thailand and 25 species featuring new distributions reported for the province. Species richness was highest in cultivated habitats, likely reflecting the active role of traditional agroecosystems in conserving both native and introduced taxa. Natural habitats such as wetlands and dry evergreen forests hosted species with restricted distributions, underscoring the need to preserve ecological heterogeneity. Ethnobotanical interviews revealed widespread local use of rhizomes and inflorescences for food, medicine, ornamentation, and ceremonial purposes. Phenological observations indicated synchronized flowering and fruiting aligned with the monsoon season, which are traits that supports successful reproduction but may also increase vulnerability under shifting climate regimes—highlighting the importance of monitoring for conservation and guiding optimal harvest timing. These findings demonstrate that both natural and cultivated systems are integral to maintaining Zingiberaceae diversity in the region. Conservation strategies should prioritize habitat protection, support traditional cultivation practices, and promote further research into economically and culturally valuable species. Full article

This study investigates the plant diversity, ethnobotanical knowledge, and traditional uses of plants by the Lao Isan ethnic group in Na Chueak District, Maha Sarakham Province, Thailand. A total of 109 plant species, representing 48 families, were identified, with the Fabaceae, Euphorbiaceae, and Rubiaceae families being the most prevalent. This study highlights the ecological and cultural significance of these plants, many of which serve multiple purposes, including food, medicine, and other purposes. A use value analysis revealed that plants such as Schleichera oleosa (Lour.) Oken, Trigonostemon reidioides (Kurz) Craib, and Vietnamosasa pusilla (A.Chev. & A.Camus) T.Q.Nguyen have high functional importance in local cultural and medical practices. The Relative Frequency of Citation indicated that these species are integral to the community’s plant knowledge, with Trigonostemon reidioides and Vietnamosasa pusilla being especially prominent. Additionally, 62 species were identified for medicinal use, emphasizing the community’s reliance on plant-based remedies. This study also discusses the Informant Consensus Factor and Fidelity Level, which reveal strong agreement on the effectiveness of certain plants, particularly for treating digestive, respiratory, and wound healing conditions. This research contributes to the documentation of ethnobotanical knowledge, emphasizing the importance of traditional plant use for cultural continuity and sustainable resource management. Full article

The Araceae family exhibits remarkable morphological and ecological diversity, playing a significant role in horticulture, agriculture, and traditional practices. Despite Thailand’s rich aroid diversity, Kalasin Province remains underexplored in terms of species distribution, ecology, and local utilization. This research aimed to document the diversity, habitat preferences, and local uses of Araceae in Kalasin Province. Field surveys, herbarium studies, and interviews with local communities were conducted to record species occurrences and assess their applications. A total of 51 species, representing 24 genera and 5 subfamilies, were identified, with 13 species found in the wild and 43 in cultivation. Wild species demonstrated pronounced ecological specialization, thriving in natural habitats, while cultivated species dominated across all districts, reflecting socio-economic and cultural influences. All recorded species were utilized in at least one category, including food, medicine, ornamental purposes, and cultural practices. Notably, Alocasia macrorrhizos and Colocasia esculenta were the most extensively used, contributing to multiple utilization categories. This study also proposed preliminary conservation status of wild species, with several species proposed as Vulnerable due to habitat degradation and limited distribution. These findings contribute to a better understanding of Kalasin’s aroid flora and emphasize the importance of conservation efforts in the face of agricultural expansion and habitat alteration. This study provides a foundation for the sustainable management and preservation of Araceae biodiversity in northeastern Thailand. Full article

This study investigates the chemical composition and antioxidant and antifungal activities of essential oils (EOs) extracted from different parts of Alpinia uraiensis Hayata, an endemic species of Taiwan. EOs were obtained from flowers, leaves, stems, roots, and rhizomes using hydrodistillation, and their compositions were analyzed by gas chromatography–mass spectrometry (GC-MS). Monoterpene hydrocarbons and oxygenated monoterpenes were predominant, with flower and leaf EOs rich in γ-terpinene, terpinen-4-ol, and 1,8-cineole, while root EO was characterized by fenchyl acetate (72.2%). Antioxidant activity was evaluated using the DPPH assay, where the flower EO exhibited the highest radical scavenging activity (99.5% at 100 mg/mL), followed by rhizome and stem EOs, while root EO showed moderate activity. Antifungal activity against Phellinus noxius, a major wood-decaying pathogen, was assessed using the agar dilution method. Root EO exhibited the strongest antifungal effect, achieving complete inhibition at 400 and 800 μg/mL, while other EOs showed weaker activity. These findings suggest that A. uraiensis EOs possess potential antioxidant and antifungal properties, particularly the root EO, which may serve as a natural antifungal agent. Further studies are needed to elucidate the key bioactive compounds and their mechanisms for potential pharmaceutical and industrial applications. Full article