&lt;p&gt;&lt;strong&gt;&lt;em&gt;Dendrobium taprobanium&lt;/em&gt;&lt;/strong&gt;&lt;strong&gt; (Orchidaceae): a new species from Sri Lanka with taxonomic notes on some species of the genus&lt;/strong&gt;&lt;/p&gt;

Priyadarshana, Tharaka Sudesh; Atthanagoda, Anusha G.; Wijewardhane, Ishara Harshajith; Aberathna, Nimantha; Peabotuwage, Indika; Kumar, Pankaj

doi:10.11646/phytotaxa.432.1.7

Cited by 3 publications

(4 citation statements)

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“…Currently, there are more than 1000 species in this genus, and new species and varieties are described frequently from tropical Asia [97,98]. Diagnostic characters which allow to identify particular Dendrobium species are related to flower morphology and therefore plants cannot be correctly classified in the vegetative stage [99]. To further investigate orchids used for treating cancer, it is vitally important that they are correctly identified.…”

Section: Importance Of Taxonomy and Plant Materials Preservationmentioning

confidence: 99%

Orchidaceae-Derived Anticancer Agents: A Review

Śliwiński

Kowalczyk

Sitarek

et al. 2022

Cancers

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Species of orchids, which belong to the largest family of flowering plants, are commonly used in folk medicine for the treatment of infections and tumors. However, little is known about the actual chemical composition of these plants and their anticancer properties. In this paper, the most recent literature on orchid-derived bioactive substances with anticancer properties is reviewed. For the assessment, previous papers on the anticancer activity of Orchidaceae published since 2015 were considered. The papers were found by exploring electronic databases. According to the available data, many species of orchids contain potential antitumor chemicals. The bioactive substances in a relatively insignificant number of orchids are identified, and most studies are on Asian taxa. Broader research on American and African species and the correct identification of samples included in the experiments are essential for evaluating the usefulness of orchids as a plant family with vast anticancer potential.

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Section: Importance Of Taxonomy and Plant Materials Preservationmentioning

confidence: 99%

Orchidaceae-Derived Anticancer Agents: A Review

Śliwiński

Kowalczyk

Sitarek

et al. 2022

Cancers

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“…The diversity of mycohetrotrophic orchids is also high in this zone. New species like Dendrobium taprobanium Priyad., Atthan., Wijew., Aberathna, Peabotuwage & Kumar (Priyadarshana et al, 2020), Pteroceras dalaputtuwa Atthan., Priyad., Wijew., Aberathna & Kumar (Priyadarshana et al, 2019) and Gastrodia gunatillekeorum Bandara, Priyankara & Kumar (Bandara et al, 2020) have been discovered in this zone.…”

Section: Wet Highlandsmentioning

confidence: 99%

Research priorities and future directions in conservation of wild orchids in Sri Lanka: a review

2020

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Together with Western Ghats, Sri Lanka is a biodiversity hotspot amongst the 35 regions known worldwide. Considering the Sri Lankan orchids, 70.6% of the orchid species, including 84% of the endemics, are categorised as threatened. The distribution of the family Orchidaceae is mostly correlated with the distribution pattern of the main bioclimatic zones which is governed by the amount and intensity of rainfall and altitude. Habitat deterioration and degradation, clearing of vegetation, intentional forest fires and spread of invasive alien species are significant threats to native species. Illegally collection and exporting of indigenous species has been another alarming issue in the past decades. Protection of native species, increased public awareness, enforcement of legislation and introduction of new propagation techniques would certainly bring a beneficial effect to the native orchid flora. Conduct awareness programs, strengthen existing laws, and reviewing the legal framework related to the native orchid flora could be vital for future conservation. Apart from the identification of new species and their distribution, future research on understanding soil chemical and physical parameters of terrestrial habitats, plant association of terrestrial orchids, phenology patterns and interactions of pollinators, associations with mycorrhiza, effect of invasive alien species and impact of climate change are highlighted.

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“…It is the third largest genus of the Orchidaceae family, including 1,200-1,500 species that are distributed predominantly throughout paleotropical regions. Sri Lanka and the Western Ghats of India belong to one of the 34 world biodiversity hotspots, with ten indigenous Dendrobium species reported in Sri Lanka (Xiang et al 2016;Priyadarshana et al 2020). Among them, D. crumenatum is an epiphytic pseudobulb with white, fragrant flowers and distributed in wild throughout Taiwan to tropical Asia (Jayaweera 1981;Govaerts et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Although some of the wild species are very attractive, widely grown and demanding, the majority of orchids available in the market are hybrids mainly from Taiwan, Thailand and Malaysia. Nevertheless, the development of attractive hybrids using Sri Lankan indigenous Dendrobium species is scarce ( Padmini & Kodagoda 2017;Priyadarshana et al 2020). The success of pollination and hybridization depends on various environmental, physiological, biochemical or genetic factors such as pre-zygotic barriers and inbreeding depression.…”

Section: Introductionmentioning

confidence: 99%

Pollen biology and reproductive ecology of selected paleotropical Dendrobiums and its commercial hybrids

et al. 2023

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Understanding the reproductive biology is of great importance in the development of novel hybrids in ornamental plants. Pollen fitness-related traits are crucial for the pollination success in any plant species including dendrobiums. The aim of the study was to determine and compare the fitness traits of ten commercial Dendrobium hybrids and two indigenous Dendrobium species, D. crumenatum and D. anosmum found in Sri Lanka. We measured pollen viability, pollen germinability, and fruit production after controlled pollination. The effect of storage temperature on D. crumenatum pollen viability was evaluated to establish a suitable pollen storage method to improve future breeding programmes, as the flowering of dendrobiums is seasonal. The reproductive ecology of selected dendrobiums was studied by the observations of visits of natural pollinators and by assessing floral morphology to predict their potential pollinators. Six commercial hybrids had non-viable pollen while D. crumenatum showed the highest pollen germinability under both in vivo and in vitro conditions. Ninety percent of the commercial hybrids failed in vitro pollen germination whereas under in vivo conditions 50% were successful. Self-incompatibility in D. crumenatum was observed in both hand-pollination and under natural pollination. Pollen of D. crumenatum can be stored for two weeks at 9°C maintaining viability and germinability. Selected dendrobiums have shown adaptations to melittophily, suggesting the pollination by bees. Findings indicated a reduction of male fitness in most of the commercial Dendrobium hybrids and a higher fruit set is seen in selfing than cross-pollination. The present study provides information for developing conservation strategies and future hybridization programmes in paleotropical dendrobiums.

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<p><strong><em>Dendrobium taprobanium</em></strong><strong> (Orchidaceae): a new species from Sri Lanka with taxonomic notes on some species of the genus</strong></p>

Cited by 3 publications

References 0 publications

Orchidaceae-Derived Anticancer Agents: A Review

Orchidaceae-Derived Anticancer Agents: A Review

Research priorities and future directions in conservation of wild orchids in Sri Lanka: a review

Pollen biology and reproductive ecology of selected paleotropical Dendrobiums and its commercial hybrids

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