Internationale Naturschutzakademie Insel Vilm
Santa Barbara Botanic Garden, Santa Barbara, California
TÜBİTAK
Humboldt State University
Department of Primary Industries and Regional Development, Western Australia
Stephen F. Austin State University
University of Southern Maine
Involvement Of Melatonin In The Regulation Of Reactive Oxygen Species Levels In Plants,
2026
TÜBİTAK
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
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,
2026
TÜBİTAK
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
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),
2026
Portland State University
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,
2026
University of New Hampshire
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),
2026
Portland State University
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),
2026
Portland State University
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,
2026
University of Northern Colorado
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,
2026
California State University - San Bernardino
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 …
Oregon State Rank Assessment For Alpine Smelowskia (Smelowskia Ovalis),
2026
Portland State University
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),
2026
Portland State University
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),
2026
Portland State University
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),
2026
Portland State University
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.
A New Species Of The Genus Heracleum From Türkiye: H. Papilionaceum (Apiaceae: Tordyliaea),
2026
Kastamonu University
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.
Oregon State Rank Assessment For Steens Mountain Cushion Buckwheat (Eriogonum Ovalifolium Var. Rubidum),
2026
Portland State University
Oregon State Rank Assessment For Steens Mountain Cushion Buckwheat (Eriogonum Ovalifolium Var. Rubidum), Lindsey K. Wise
Institute for Natural Resources Publications
Oregon state conservation status assessment for Steens Mountain Cushion Buckwheat (Eriogonum ovalifolium var. rubidum) using NatureServe methodology, 2026.
Optimized Immunoprecipitation Identifies Candidate Proteins Associated With Eyespot Protein Eye2 In Chlamydomonas Reinhardtii ,
2026
Ege University
Optimized Immunoprecipitation Identifies Candidate Proteins Associated With Eyespot Protein Eye2 In Chlamydomonas Reinhardtii , Esra Öztürk, Telsa Mittelmeier, Carol Dieckmann, Atakan Sukatar
Turkish Journal of Botany
The EYE2 protein is essential for eyespot assembly and localization in Chlamydomonas reinhardtii, yet the molecular mechanisms underlying its function remain poorly understood. In this study, we present a systematic evaluation and optimization of an immunoprecipitation (IP)-based workflow for isolating EYE2 and its associated protein complexes. Key methodological variables including strain selection, flagella removal, and detergent concentration were compared using western blotting to determine optimal extraction conditions. The combination of the cell wall-deficient cw15 strain, 4% digitonin extraction, and pH shock-mediated deflagellation significantly enhanced IP specificity and reproducibility. Using this optimized protocol, EYE2 and its potential interaction partners were isolated …
Influence Of A New Nanoensemble Of Graphene Oxide And Indole-3-Acetic Acid On The Morphophysiological, Biochemical, And Ultrastructural Characteristics Of Upland Cotton (Gossypium Hirsutum L.), Nurlan Amrahov, Ulviyya Hasanova, Aliyeva Gunel, Aghazada Goncha, Fuad Rzayev, Eldar Gasimov, Aliyeva Solmaz, Lala Gahramanli, Elvin Ibrahimli, Ruhangiz Mammadova, Zarema Gakhramanova, Cem Bayram, Goncha Eyvazova, Si̇bel Hasanova, Ziyaddin Mammadov
Turkish Journal of Botany
The exogenous application of phytohormones plays a crucial role in the activation of adaptive mechanisms in plants under both normal and stress conditions. Therefore, the present study investigates the synthesis, characterization, and application of nanoensembles based on indole-3-acetic acid (IAA) and graphene oxide (GO) nanolayers. The surface of GO synthesized by the modified Hummer method was noncovalently functionalized with IAA molecules. The structure and morphological properties of the prepared materials were analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, UV-Vis spectroscopy, and transmission electron microscopy. The IAA and IAA+GO nanoensemble enhanced the morphological parameters, lateral root formation, catalase and peroxidase …
Erginia (Asteraceae: Cichorieae: Crepidinae), A New Genus Accommodating Chondrilla Spinosa, An Orphan Species Of Localized Distribution In Southeastern Anatolia,
2026
Karadeniz Technical University
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
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. …
