Results 11 to 20 of about 487 (150)

Citogenética de Calochortus barbatus (Liliaceae: Calochortoideae) de la Reserva Ecológica del Pedregal de San Ángel, en México, Distrito Federal Cytogenetics of Calochortus barbatus (Liliaceae: Calochortoideae) of the Reserva Ecológica del Pedregal de San Ángel, Distrito Federal, Mexico

Revista Mexicana de Biodiversidad, 2010
Se realizó un estudio citogenético en células de meristemos radiculares de individuos de Calochortus barbatus de la Reserva Ecológica del Pedregal de San Ángel, en México, D.F. Luego de aplicar una metodología de extendido y secado al aire se confirma un
Fernando Tapia-Pastrana
doaj   +1 more source

Using life-history trait variation to inform ecological risk assessments for threatened and endangered plant species. [PDF]

Integr Environ Assess Manag, 2023
Abstract Developing population models for assessing risks to terrestrial plant species listed as threatened or endangered under the Endangered Species Act (ESA) is challenging given a paucity of data on their life histories. The purpose of this study was to develop a novel approach for identifying relatively data‐rich nonlisted species that could serve
Rueda-Cediel P, Galic N, Brain R, Pinto-Ledezma JN, Rico A, Forbes V.   +5 more
europepmc   +2 more sources

Assessing the viability of genebanked seeds from rare, wild plants native to the United States using the D.E.A.D. paradigm. [PDF]

Appl Plant Sci
Abstract Premise Genebanks must maintain viable seeds for decades. Seeds that germinate are clearly alive, but some seeds, often from wild populations, do not germinate because they are dormant, empty, aged, or damaged (D.E.A.D.). This work evaluates the effects of D.E.A.D.
Walters C, Hill LM, Heineman KD, Tetreault HM, Ibrahim S, Markstein K, Birker C, Freitag K, Wolkis D, Kunz M, Murray S, Kingsley N, Seglias A, Matsumoto N, Kaye TN, Peterson C, Albrecht MA, Dell N, Anderson S, Blackwell S, Remucal D, Gibble W, Tiller A, Coffey E, Ligon J, Blackmore L, Radcliffe C, Schneider HE, Nelson K, Sollenberger D, Finch J, Wellspring K, Jetton R, Maschinski J.   +33 more
europepmc   +2 more sources

Emerging methods in botanical DNA/RNA extraction [PDF]

Appl Plant Sci, 2023
Applications in Plant Sciences, Volume 11, Issue 3, May-June 2023.
Mitchell N, McAssey E, Hodel R.
europepmc   +2 more sources

Aging and longevity in decades-old genebanked seeds from U.S. endangered plant species: Assessments using survival and RNA integrity assays. [PDF]

Am J Bot
Abstract Premise Seed longevity is critical for successful genebanking, but it is hard to detect or predict. We examined survival of genebanked seeds from species native to the United States to estimate longevity. We tested whether RNA integrity (RIN) can be used to detect aging and predict mortality. Methods Dry seeds from >100 species were stored for
Walters C, Heineman KD, Hill L, Tetreault H, Tyler P, Zingerman Z, Ibrahim S, Maschinski J.   +7 more
europepmc   +2 more sources

Vascular plant extinction in the continental United States and Canada. [PDF]

Conserv Biol, 2021
Abstract Extinction rates are expected to increase during the Anthropocene. Current extinction rates of plants and many animals remain unknown. We quantified extinctions among the vascular flora of the continental United States and Canada since European settlement. We compiled data on apparently extinct species by querying plant conservation databases,
Knapp WM, Frances A, Noss R, Naczi RFC, Weakley A, Gann GD, Baldwin BG, Miller J, McIntyre P, Mishler BD, Moore G, Olmstead RG, Strong A, Kennedy K, Heidel B, Gluesenkamp D.   +15 more
europepmc   +2 more sources

Advancing the science and practice of rare plant conservation with the Center for Plant Conservation Reintroduction Database. [PDF]

Appl Plant Sci
Abstract Premise Reintroductions or translocations are an increasingly important activity to recover and conserve at‐risk plant species. Yet because many are not published in the scientific literature, learning from previous attempts may often require considerable time and effort. The Center for Plant Conservation Reintroduction Database (CPCRD; https:/
Bellis J, Albrecht MA, Maschinski J, Osazuwa-Peters O, Stanley T, Heineman KD.   +5 more
europepmc   +2 more sources

First Insights Into the LC-HRMS Profiling and Biological Activities of <i>Crocus graveolens</i>. [PDF]

Food Sci Nutr
This study reports the first comprehensive analysis of Crocus graveolens Boiss. & Reut. using LC‐HRMS, identifying 33 secondary metabolites, with rutin as the major compound (162.808 ± 4.5 μg/g extract). The extract showed moderate antioxidant activity and effectively inhibited acetylcholinesterase (30.88% ± 1.51%) and butyrylcholinesterase (61.22% ± 0.
Ersoy E, Boğa M, Kaplan A, Mataracı Kara E, Demirci Kayıran S, Eroğlu Özkan E.   +5 more
europepmc   +2 more sources

Improving plant DNA metabarcoding accuracy with ecological filters and Angiosperms353: Field and pollen microscopy validation. [PDF]

Appl Plant Sci
Abstract Premise Metabarcoding has become a successful tool for the identification of species in ecological assemblages. However, the usefulness of metabarcoding for identifying plant species has been hampered due to a lack of universal gene regions that work across all taxa, limiting the applications of metabarcoding in ecology.
Benkendorf RC, Woodworth EJ, CaraDonna PJ, Ogilvie JE, Taddeo S, Fant JB.   +5 more
europepmc   +2 more sources

Forb composition gradients and intra-annual variation in a threatened Pacific Northwest Bunchgrass Prairie. [PDF]

Ecol Evol, 2022
Native perennial forb communities (an overlooked component in grasslands) in the Pacific Northwest Bunchgrass Prairie (PNB) were structured by water drainage and soil depth. Conventional vegetation sampling is insufficient to characterize perennial forbs in the PNB—threatening conservation efforts in this endangered grassland.
Averett JP, Endress BA.
europepmc   +2 more sources