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Articles 1 - 30 of 10766
Full-Text Articles in Botany
Weedy Vascular Plants Of The United States, James P. Smith Jr
Weedy Vascular Plants Of The United States, James P. Smith Jr
Botanical Studies
No abstract provided.
Evaluation Of Polycyclic Aromatic Hydrocarbon Profiles In Fermented Artemisia Annua Leaf Extract, Mabitine Daniel Malo, Ohemu Adaofoyi Isaiah, Igaznda Terhemba James, Obamuwe Rebecca Joy, Ugber Erdoo Charity, Itodo Monday Christopher
Evaluation Of Polycyclic Aromatic Hydrocarbon Profiles In Fermented Artemisia Annua Leaf Extract, Mabitine Daniel Malo, Ohemu Adaofoyi Isaiah, Igaznda Terhemba James, Obamuwe Rebecca Joy, Ugber Erdoo Charity, Itodo Monday Christopher
Journal of Bioresource Management
This study evaluated the presence, profile and concentration of polycyclic aromatic hydrocarbons (PAHs) in the fermented leaf extract of Artemisia annua, a medicinal plant widely used for its antimalarial and skin-benefiting properties. Given the plant’s increased use in Nigerian traditional medicine, this research examines how fermentation a process known to enhance bioactive compound availability may influence PAH levels, which are of concern due to their carcinogenic, mutagenic, and teratogenic effects. The A. annua leaves were fermented using Saccharomyces cerevisiae cultures and subsequently analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) to detect and quantify PAHs. The analysis identified 24 distinct PAH …
Antiplasmodial Activity Of Detarium Senegalense J.F.Gmel. (Fabaceae) Stembark Ethanol Extract, Cletus Anes Ukwubile, Hananiya Hamza Milagawanda
Antiplasmodial Activity Of Detarium Senegalense J.F.Gmel. (Fabaceae) Stembark Ethanol Extract, Cletus Anes Ukwubile, Hananiya Hamza Milagawanda
Journal of Bioresource Management
Malaria is a persistent public health impediment in sub-Saharan Africa, necessitating an incessant search for new, effective, and low-cost antimalarial agents from medicinal plants. This study was designed to evaluate the antiplasmodial efficacy of the ethanol crude extract of the stembark of Detarium senegalense. Standard methods were employed to identify the major secondary metabolites. In vivo antiplasmodial activity of the extract in Plasmodium berghei-infected mice was carried out as per the standard suppression test. The LD50 was elicited in mice using a standard procedure. Phytochemical analysis revealed the presence of important bioactive components such as alkaloids, flavonoids, …
Plants Introduced Into Hawaii By The Polynesians, James P. Smith Jr
Plants Introduced Into Hawaii By The Polynesians, James P. Smith Jr
Botanical Studies
No abstract provided.
Medicinal Plants: An Introduction, James P. Smith Jr
Medicinal Plants: An Introduction, James P. Smith Jr
Botanical Studies
No abstract provided.
Grasses That Are Not Grasses, James P. Smith Jr
Grasses That Are Not Grasses, James P. Smith Jr
Botanical Studies
No abstract provided.
Poisonous And Injurious Vascular Plants Of The United States: An Introduction, James P. Smith Jr
Poisonous And Injurious Vascular Plants Of The United States: An Introduction, James P. Smith Jr
Botanical Studies
No abstract provided.
The Campus Flora, California State Polytechnic University, Humboldt, James P. Smith Jr
The Campus Flora, California State Polytechnic University, Humboldt, James P. Smith Jr
Botanical Studies
No abstract provided.
A List Of The Vascular Plants Of Iowa, James P. Smith Jr
A List Of The Vascular Plants Of Iowa, James P. Smith Jr
Botanical Studies
No abstract provided.
Involvement Of Melatonin In The Regulation Of Reactive Oxygen Species Levels In Plants, Bariş Uzi̇lday, Oğuzhan Yilmaz, Tolga Yalçinkaya, Zehra Özgecan Tanyolaç, İsmai̇l Türkan, Rengi̇n Özgür Uzi̇lday
Involvement Of Melatonin In The Regulation Of Reactive Oxygen Species Levels In Plants, Bariş Uzi̇lday, Oğuzhan Yilmaz, Tolga Yalçinkaya, Zehra Özgecan Tanyolaç, İsmai̇l Türkan, Rengi̇n Özgür Uzi̇lday
Turkish Journal of Botany
Abiotic stress conditions impair plant metabolism partly by inducing the excessive production of reactive oxygen species (ROS). Melatonin, a multifunctional indoleamine, has emerged as an important regulator of plant responses to oxidative stress. This review highlights recent findings on the interactions among phytomelatonin, ROS homeostasis, antioxidant metabolism, photosynthetic protection, stress priming, and abiotic stress tolerance. We discuss how melatonin modulates the antioxidative response under diverse stress conditions and evaluate its effects on photosynthetic performance, ROS signaling, and membrane stability. Special attention is given to priming studies showing that melatonin pretreatment can improve stress tolerance. Emerging evidence from plant tissue culture …
Complete Chloroplast Genome Analysis Of Critically Endangered Endemic Prangos Denticulata And Insights Into Its Evolutionary Dynamics, Ayşenur Bozkurt, Doğa Seli̇n Kayihan, Hali̇s Batuhan Ünal, Ceyhun Kayihan
Complete Chloroplast Genome Analysis Of Critically Endangered Endemic Prangos Denticulata And Insights Into Its Evolutionary Dynamics, Ayşenur Bozkurt, Doğa Seli̇n Kayihan, Hali̇s Batuhan Ünal, Ceyhun Kayihan
Turkish Journal of Botany
Prangos denticulata (Apiaceae) is a critically endangered and narrowly endemic species restricted to Ankara, Türkiye. To provide genomic resources for its conservation and evolutionary study, we sequenced, assembled, and annotated its complete chloroplast genome using short-read next-generation sequencing. The circular plastome was 153,486 bp in length, exhibiting the typical quadripartite structure with a large single-copy (86,440 bp), small single-copy (17,894 bp), and two inverted repeats (49,152 bp), and an overall GC content of 37.8%. A total of 116 genes were identified, including 92 protein-coding, 31 tRNA, and 5 rRNA genes, of which 20 contained introns. Comparative analyses with P. trifida, …
Drought Priming Improves Waterlogging Tolerance In Alfalfa, But Less Effectively Than Waterlogging Priming, Gürkan Demi̇rkol, Ni̇lüfer Kara
Drought Priming Improves Waterlogging Tolerance In Alfalfa, But Less Effectively Than Waterlogging Priming, Gürkan Demi̇rkol, Ni̇lüfer Kara
Turkish Journal of Botany
Waterlogging severely restricts growth and productivity in alfalfa (Medicago sativa L.), necessitating effective strategies to improve stress tolerance. This study investigated whether drought priming or waterlogging priming could enhance tolerance to subsequent waterlogging stress in the alfalfa cultivar “Bilensoy-80”. Plants were subjected to drought priming, waterlogging priming, or no priming prior to progressive waterlogging stress for 0, 4, 8, 12, 16, and 20 days. Waterlogging priming consistently alleviated growth inhibition, maintained chlorophyll content, and reduced oxidative damage under prolonged stress. Drought priming was associated with partial cross-tolerance, particularly through improved root growth, plant water status, and oxidative stress responses, although …
Red Light Accelerates Adventitious Root Primordium Initiation And Differentiation In Phoebe Bournei Cuttings By Modulating Auxin Signaling And Hormonal Balance, Yuewang Niu, Yuanyang Bi, Chenyu Gong, Shipin Chen
Red Light Accelerates Adventitious Root Primordium Initiation And Differentiation In Phoebe Bournei Cuttings By Modulating Auxin Signaling And Hormonal Balance, Yuewang Niu, Yuanyang Bi, Chenyu Gong, Shipin Chen
Turkish Journal of Botany
Adventitious root formation in stem cuttings of Phoebe bournei, an economically and ecologically significant woody species, is a major bottleneck in clonal propagation. To elucidate the impact of spectral quality on early adventitious root development, we characterized the morphological, hormonal, and transcriptomic dynamics of primordium initiation and differentiation under white, red, and blue light. Under red light, cuttings exhibited the earliest and most pronounced formation of white filamentous structures at lenticels, indicative of root primordium initiation, as early as 20 days after cutting, whereas white and blue light treatments showed delayed responses. Paraffin section analysis confirmed the induced origin of …
Oregon State Rank Assessment For Schweinitz's Cyperus (Cyperus Schweinitzii), Nora Dunkirk
Oregon State Rank Assessment For Schweinitz's Cyperus (Cyperus Schweinitzii), Nora Dunkirk
Institute for Natural Resources Publications
Oregon state conservation status assessment for Schweinitz's cyperus (Cyperus schweinitzii) using NatureServe methodology, 2026.
Nasa’S Ecostress Satellite Reveals Widespread Midday Depression In Ecosystem Evapotranspiration, Jingyi Bu, Jingfeng Xiao, Joshua B. Fisher, Yiqi Luo
Nasa’S Ecostress Satellite Reveals Widespread Midday Depression In Ecosystem Evapotranspiration, Jingyi Bu, Jingfeng Xiao, Joshua B. Fisher, Yiqi Luo
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Plants often exhibit a midday depression in water use (i.e., transpiration), reflecting a constraint on their ability to sustain maximum water transport, which may occur at the cost of reduced photosynthesis. Eddy covariance observations and geostationary satellites cannot quantify this widespread phenomenon globally while resolving fine-scale spatial variability. Using evapotranspiration measurements from the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) and machine learning, we quantify the global distribution of midday depression in evapotranspiration. Midday depression primarily occurs during peak-growing seasons in temperate zones and dry periods in the tropics, with a morning shift of the peak evapotranspiration time …
Oregon State Rank Assessment For Koehler's Rockcress (Boechera Koehleri), Lindsey K. Wise, Gabriel Campbell
Oregon State Rank Assessment For Koehler's Rockcress (Boechera Koehleri), Lindsey K. Wise, Gabriel Campbell
Institute for Natural Resources Publications
Oregon state conservation status assessment for Koehler's rockcress (Boechera koehleri) using NatureServe methodology, 2026.
Oregon State Rank Assessment For Deer-Cabbage (Nephrophyllidium Crista-Galli), Lindsey K. Wise
Oregon State Rank Assessment For Deer-Cabbage (Nephrophyllidium Crista-Galli), Lindsey K. Wise
Institute for Natural Resources Publications
Oregon state conservation status assessment for Deer-cabbage (Nephrophyllidium crista-galli) using NatureServe methodology, 2026.
A Genetic Analysis Of The Rare Endemic Astragalus Ripleyi Barneby, Juan Antonio Jaramillo-Chico
A Genetic Analysis Of The Rare Endemic Astragalus Ripleyi Barneby, Juan Antonio Jaramillo-Chico
Master's Theses
Astragalus ripleyi Barneby is a rare endemic species found in the San Luis Valley of the southern portions of the Rocky Mountains in Colorado and New Mexico. Though not federally listed as endangered, the species is on the Bureau of Land Management’s Sensitive Species List, warranting protection and continued management. This study aims to provide information about the genetic health of the species to inform conservation efforts and provide updated management recommendations. A genetic health analysis was conducted investigating the levels of diversity present in the species, how genetic diversity is structured across the known range of the species and …
Effects Of Photosynthetic Mode On Growth In Closely Related Tillandsia Species, Jeremy L. Read
Effects Of Photosynthetic Mode On Growth In Closely Related Tillandsia Species, Jeremy L. Read
Electronic Theses, Projects, and Dissertations
To examine the effects of photosynthetic mode (C3 vs CAM) on plant productivity, subjects of the sister taxa Tillandsia confertiflora (a C3 species) and Tillandsia latifolia (a CAM species) were grown under controlled conditions via growth chamber over 30 weeks. These subjects were divided into non-stressed and drought stress groups. Subjects were compared for total biomass gained or lost over the time period as well as physiological stress measures and CAM activity. The primary conclusion is that usage of CAM does not show major differences or tradeoffs for overall productivity. Future work is needed to clarify if this holds true …
Silviculture For Coastal Forest Resilience: Promoting Forest Regeneration And Managing Invasive Plant Species, Ryan Bohannon
Silviculture For Coastal Forest Resilience: Promoting Forest Regeneration And Managing Invasive Plant Species, Ryan Bohannon
All Dissertations
Coastal forests of the southern United States and the ecosystem services they provide are threatened by an intensifying and interacting suite of disturbances associated with global change. Silvicultural strategies such as enrichment planting, invasive plant management, and browse mitigation treatments can enhance the resilience and adaptive capacity of forests to these threats by promoting sustainable regeneration and recruitment dynamics. To improve our understanding of coastal forest disturbance regimes and their impacts on forest stand dynamics, I conducted a systematic literature review of maritime forest disturbance ecology and identified coastal storms, ungulate browsing pressure, and invasive plants as primary disturbances shaping …
Considerations And Challenges For Oak-Pine Woodland Restoration In The Southern Appalachians, Armin Weise
Considerations And Challenges For Oak-Pine Woodland Restoration In The Southern Appalachians, Armin Weise
All Dissertations
Appalachian forests in the southeastern United States are composed of fire-adapted communities. These have historically been burned by native Americans and by lightning-ignited fires, causing widespread ignitions across the landscape for millennia that have shaped the forest and the species within it. Many of the more xeric oak-pine forest systems in the region were more akin to woodlands with open midstories, understocked canopies, and a diverse understory layer of herbaceous species and shrubs. With the decline of Native Americans due to disease and forced removal, fire across the landscape declined, a trend compounded by fire-suppression policies put forth by the …
Reconstructing Stand-Age Structure In A Wet Miombo Woodland Using Dendrochronology, Zambia, Clara Tiyembekeze Zulu
Reconstructing Stand-Age Structure In A Wet Miombo Woodland Using Dendrochronology, Zambia, Clara Tiyembekeze Zulu
All-Inclusive List of Electronic Theses and Dissertations
Dendrochronological research in tropical Africa has remained limited, leaving critical gaps in stand-age structure and climate-growth relationships in seasonally dry tropical woodlands. This study reconstructed stand-age structure and assessed climate sensitivity in the wet Miombo woodland of African Explosives Limited (AEL) forest, Copperbelt Province, Zambia. Field sampling was conducted during four African Dendrochronology Fieldschools (2021-2024) using a Modified Variable Area Transect (MVAT) design across nine plots. The series intercorrelation was 0.351; the average mean sensitivity was 0.423. The oldest tree was 170 years old, and more than 70% of the sampled species showed potential for dendrochronology. Markhamia obtusifolia was the …
Oregon State Rank Assessment For Alpine Smelowskia (Smelowskia Ovalis), Lindsey K. Wise
Oregon State Rank Assessment For Alpine Smelowskia (Smelowskia Ovalis), Lindsey K. Wise
Institute for Natural Resources Publications
Oregon state conservation status assessment for Alpine smelowskia (Smelowskia ovalis) using NatureServe methodology, 2026.
Oregon State Rank Assessment For Ithuriel's Spear (Triteleia Laxa), Lindsey K. Wise
Oregon State Rank Assessment For Ithuriel's Spear (Triteleia Laxa), Lindsey K. Wise
Institute for Natural Resources Publications
Oregon state conservation status assessment for Ithuriel's spear (Triteleia laxa)
using NatureServe methodology, 2026.
Oregon State Rank Assessment For Thompson Mistmaiden (Romanzoffia Thompsonii), Nora Dunkirk, Gabriel Campbell, Sue Vrilakas
Oregon State Rank Assessment For Thompson Mistmaiden (Romanzoffia Thompsonii), Nora Dunkirk, Gabriel Campbell, Sue Vrilakas
Institute for Natural Resources Publications
Oregon state conservation status assessment for Thompson mistmaiden (Romanzoffia thompsonii) using NatureServe methodology, 2026.
Oregon State Rank Assessment For California Pinefoot (Pityopus Californicus), Lindsey K. Wise
Oregon State Rank Assessment For California Pinefoot (Pityopus Californicus), Lindsey K. Wise
Institute for Natural Resources Publications
Oregon state conservation status assessment for California Pinefoot (Pityopus californicus) using NatureServe methodology, 2026.
Unveiling The Diversity Within Salvia Caespitosa Sensu Lato (Lamiaceae): Three New “Hidden” Endemic Species From Türkiye, Ferhat Celep, Musa Doğan, Gali̇p Akaydin, Ahmet Kahraman, Ersi̇n Karabacak, Ömer Çeçen, Meti̇n Armağan, Chun-Lei Xiang, Bryan T. Drew
Unveiling The Diversity Within Salvia Caespitosa Sensu Lato (Lamiaceae): Three New “Hidden” Endemic Species From Türkiye, Ferhat Celep, Musa Doğan, Gali̇p Akaydin, Ahmet Kahraman, Ersi̇n Karabacak, Ömer Çeçen, Meti̇n Armağan, Chun-Lei Xiang, Bryan T. Drew
Turkish Journal of Botany
Documenting species, particularly those that are threatened or endangered, is fundamental to biodiversity conservation. However, many taxa remain scientifically unrecognized, being either undiscovered or unpublished. While some plants can be easily recognized as new species, other identifications are obscured by morphological, taxonomic, and nomenclatural complexity. Detecting cryptic or “hidden” species is therefore essential to understanding biodiversity and plant evolution. Our revisionary studies on Salvia demonstrate that the morphologically complex Salvia caespitosa is not a single species but instead comprises at least four distinct species, three with narrow distributions. This conclusion is supported by integrative evidence from extensive field studies, herbarium …
A New Species Of The Genus Heracleum From Türkiye: H. Papilionaceum (Apiaceae: Tordyliaea), Mehmet Sağiroğlu, Mardiya Sabdani̇, Bariş Bani̇, Hayri̇ Duman
A New Species Of The Genus Heracleum From Türkiye: H. Papilionaceum (Apiaceae: Tordyliaea), Mehmet Sağiroğlu, Mardiya Sabdani̇, Bariş Bani̇, Hayri̇ Duman
Turkish Journal of Botany
A new species, Heracleumpapilionaceum (Apiaceae: Tordylieae), is described and illustrated from the Elmacık Mountains, Bolu Province, northwestern Türkiye. Morphological studies and phylogenetic analyses based on nuclear ribosomal (nr)DNA Internal Transcribed Spacer sequences placed the new species close to H. apiifolium and H. munzurense. Comparative morphological and fruit anatomical data, images, and a distribution map are provided. An International Union for Conservation of Nature Red List assessment is also presented, supporting its classification as Critically Endangered.
Erginia (Asteraceae: Cichorieae: Crepidinae), A New Genus Accommodating Chondrilla Spinosa, An Orphan Species Of Localized Distribution In Southeastern Anatolia, Murat Erdem Güzel, Kami̇l Coşkunçelebi̇, Serdar Makbul, Mutlu Gültepe, Zeynepnur Alemdağ, Norbert Kilian
Erginia (Asteraceae: Cichorieae: Crepidinae), A New Genus Accommodating Chondrilla Spinosa, An Orphan Species Of Localized Distribution In Southeastern Anatolia, Murat Erdem Güzel, Kami̇l Coşkunçelebi̇, Serdar Makbul, Mutlu Gültepe, Zeynepnur Alemdağ, Norbert Kilian
Turkish Journal of Botany
The new genus Erginia is established to accommodate Chondrilla spinosa, a species of previously uncertain systematic placement, with a highly localized distribution in Southeastern Anatolia (Türkiye) on alpine screes along two mountain ridges. Although there has been general agreement that the species is a member of the subtribe Crepidinae in its wider sense, including the Chondrillinae, its placement in Chondrilla is based on the superficial resemblance of its achene features, which also do not match any other known genus, and no molecular phylogenetic analysis had clarified its sister group. In this study, we produce additional micro- and macromorphological as well …
Integrative Data Inform The Taxonomy Of Salix: A Case Study Of S. Purpurea L. Subsp. Leucodermis Yalt. (Salicaceae) From Türkiye, Peli̇n Acar, Yasi̇n Kaya, Dudu Özlem Mavi̇ İdman, Irina V. Belyaeva
Integrative Data Inform The Taxonomy Of Salix: A Case Study Of S. Purpurea L. Subsp. Leucodermis Yalt. (Salicaceae) From Türkiye, Peli̇n Acar, Yasi̇n Kaya, Dudu Özlem Mavi̇ İdman, Irina V. Belyaeva
Turkish Journal of Botany
The study of endemic species provides valuable perspectives on evolutionary history and future targets for their conservation. Salix purpurea L. subsp. leucodermis Yalt., which is endemic to Sandras Mountain in Türkiye, was analysed using morphological, anatomical, and genomic methods. This study presents the first draft short-read sequence of S. purpurea subsp. leucodermis, providing preliminary genomic evidence of differentiation from related taxa. This study also revealed a specific combination of anatomical features (prominent calcium oxalate crystals and amphistomatous leaves) and morphological characteristics (striated wood, glabrous buds, absence of stipules) that differentiate the taxon in question from the closely related species S. …