Botany Commons^™

Elemental And Isotopic Analysis Of Leaves Predicts Nitrogen‑Fixing Phenotypes, Joshua R. Doby, Carolina Moriani Siniscalchi, Mariela Pajuelo, John Krigbaum, Douglas E. Soltis, Robert P. Guralnick, Ryan A. Folk

UL Publications

Nitrogen (N)-fixing symbiosis is critical to terrestrial ecosystems, yet possession of this trait is known for few plant species. Broader presence of the symbiosis is often indirectly determined by phylogenetic relatedness to taxa investigated via manipulative experiments. This data gap may ultimately underestimate phylogenetic, spatial, and temporal variation in N-fixing symbiosis. Still needed are simpler field or collections-based approaches for inferring symbiotic status. N-fixing plants differ from non-N-fixing plants in elemental and isotopic composition, but previous investigations have not tested predictive accuracy using such proxies. Here we develop a regional field study and demonstrate a simple classification model for fixer …

Investigating The Adaptive Potential Of Leaf Variegation In Two Dimorphic Hexastylis Species, Cierra N. Sullivan

All Dissertations

Variegated leaves with disjointed, patterned coloration of the leaf blade are often hypothesized to have decreased photosynthetic capacity in comparison to uniformly colored leaves. Yet, many forest understory plants in tropical, subtropical, and temperate climates possess leaf variegation. Moreover, mixed findings from previous research on the physiological impacts of leaf variegation suggest variegation is adaptative under certain environmental conditions despite decreased photosynthetic tissue area. I take an eco-physiological approach to investigate agents of selection maintaining a leaf variegation polymorphism in Hexastylis, which has both quantitative and qualitative variation in variegation. First, I conduct field surveys of morph frequencies, quantitative …

Oregon State Rank Assessment For Rough Popcorn Flower (Plagiobothrys Hirtus), Nora Dunkirk

Institute for Natural Resources Publications

Oregon state conservation status assessment for rough popcorn flower (Plagiobothrys hirtus) using NatureServe methodology, 2024.

Oregon State Rank Assessment For Meadow Lomatium (Lomatium Pastorale), Nora Dunkirk

Institute for Natural Resources Publications

Oregon state conservation status assessment for meadow lomatium (Lomatium pastorale) using NatureServe methodology, 2024.

Seed Dispersal By Martu Peoples Promotes The Distribution Of Native Plants In Arid Australia, Rebecca Bliege Bird, Douglas Bird, Christopher T. Martine, Chloe Mcguire, Leanne Greenwood, Desmond Taylor, Tanisha M. Williams, Peter M. Veth

Faculty Journal Articles

Commensal relationships between wild plants and their dispersers play a key ecological and evolutionary role in community structure and function. While non-human dispersers are often considered critical to plant recruitment, human dispersers have received much less attention, especially when it comes to non-domesticated plants. Australia, as a continent historically characterized by economies reliant on non-domesticated plants, is thus a key system for exploring the ecological role of people as seed dispersers in the absence of agriculture. Here, we utilize a controlled observation research design, employing ecological surveys and ethnographic observations to examine how seed dispersal and landscape burning by Martu …

Oregon State Rank Assessment For Disappearing Monkeyflower (Erythranthe Inflatula), Lindsey K. Wise

Institute for Natural Resources Publications

Oregon state conservation status assessment for Disappearing monkeyflower (Erythranthe inflatula) using NatureServe methodology, 2024.

Greater Aperture Counteracts Effects Of Reduced Stomatal Density On Water Use Efficiency: A Case Study On Sugarcane And Meta-Analysis, Daniel Lunn, Baskaran Kannan, Amandine Germon, Alistair Leverett, Thomas E. Clemente, Fredy Altpeter, Andrew D.B. Leakey

Department of Agronomy and Horticulture: Faculty Publications

Stomata regulate CO₂ and water vapor exchange between leaves and the atmosphere. Stomata are a target for engineering to improve crop intrinsic water use efficiency (iWUE). One example is by expressing genes that lower stomatal density (SD) and reduce stomatal conductance (g_sw). However, the quantitative relationship between reduced SD, g_sw, and the mechanisms underlying it is poorly understood. We addressed this knowledge gap using low-SD sugarcane (Saccharum spp. hybrid) as a case study alongside a meta-analysis of data from 10 species. Transgenic expression of EPIDERMAL PATTERNING FACTOR 2 from Sorghum bicolor (SbEPF2) in sugarcane …

Oregon State Rank Assessment For Midget Quillwort (Isoetes Minima), Lindsey K. Wise

Institute for Natural Resources Publications

Oregon state conservation status assessment for midget quillwort (Isoetes minima) using NatureServe methodology, 2024.

Corrigendum To “Two New Species Of Inocybe (Inocybaceae: Agaricomycetes) From Türkiye Based On Morphological Characteristics And Phylogenetic Evidence [Turkish Journal Of Botany 48 (3) 2024 145-154 ], Oğuzhan Kaygusuz, Ditte Bandini, Henning Knudsen, Meike Piepenbring

Turkish Journal of Botany

This corrigendum is to address an issue regarding the manuscript's previous publication, specifically Fig. 5.Regrettably, the authors have noticed that the Figure 5 is missing among the figures although there is an incite reference within the text. To rectify this oversight and ensure the accuracy of the published work, the Figure 5 is included for your reference.

Link to the original article: https://journals.tubitak.gov.tr/botany/vol48/iss3/3/

Novelties In Funalia And The Status Of Fomitella (Polyporaceae, Basidiomycota), Virton Rodrigo Targino De Oliveira, Paulo Roberto De Assis Alves, Nelson Correia De Lima-Júnior, Carla Santos, Nelson Lima, Leif Ryvarden, Josef Vlasák, Tatiana Baptista Gibertoni

Turkish Journal of Botany

During studies on the taxonomical delimitation of some species of Funalia, some inconsistencies were observed in the genus. Based on morphological and phylogenetic analyses, Fomitella supina was positioned within the Funalia clade, thus the synonymization of the genus and the new combination of F. supina are proposed. Funalia glabrorigens is also combinated in the genus, while Coriolopsis hainanensis is suggested as a synonym of F. floccosa and F. rigida is assumed as a distinct species from F. floccosa. A table with morphological comparison of the 10 Funalia species confirmed by molecular analyses is also presented.

Mattiastrum Pulumurense (Cynoglossinae, Boraginaceae), A New Endemic Species From Türkiye, Asli Doğru Koca, Mustafa Gökmen, Gülderen Yilmaz, Mehmet Yavuz Paksoy

Turkish Journal of Botany

A new species, Mattiastrum pulumurense, has been described from Tunceli in eastern Turkey. It is generally distinguished from other species (except M. racemosum var. scabridum) by a sparsely hairy or glabrescent above-ground part. It is most similar morphologically to M. longipes, M. calycinum and Paracaryum hedgei (P. hedgei is potential a member of the genus Mattiastrum). However, it differs from M. longipes and M. calycinum by its 3-3.5 mm long and linear lanceolate scales, 2.5-4.5 mm long anthers, and 10-15 mm long styles; it differs from Paracaryum hedgei by its 3-3.5 mm long scales, 2.5-4.5 mm long anthers. In addition, …

Revisiting Fr13a For Submergence Tolerance: Beyond The Sub1a Gene, Waseem Hussain, Mahender Anumalla, Abdelbagi M. Ismail, Harkamal Walia, Vistas Kumar Singh, Ajay Kohli, Sankalp Bhosale, Hans Bhardwaj

Department of Agronomy and Horticulture: Faculty Publications

Rice landrace FR13A is the original donor of the SUB1A gene. FR13A harbors hidden genetic variation that surpasses the submergence tolerance level of SUB1A. Here, we provide an overview of the unique features of FR13A associated with exceptional recovery ability that have been overlooked since the significant discovery of the SUB1 locus. We present a detailed overview of how to underpin the new genes associated with the recovery ability seen in FR13A. Finally, we propose a unique approach to develop rice cultivars that surpass submergence tolerance beyond the SUB1 locus from FR13A.

Oregon State Rank Assessment For Cusick's Camassia (Camassia Cusickii), Nora Dunkirk

Institute for Natural Resources Publications

Oregon state conservation status assessment for Cusick's camassia (Camassia cusickii) using NatureServe methodology, 2024.

The Role Of Exogenous Gibberellic Acid (Ga3) Application In Breaking Seed Dormancy In Clematis Hirsutissima​, Ashley Grace Ogle

2024 Symposium

Seed germination in plants is controlled by several mechanisms, including the presence of phytohormones like gibberellins, as well as environmental conditions, such as temperature, light, and moisture. Germination of dormant seeds can be promoted by the exogenous application of Gibberellic Acid (GA3). GA3 acts as a natural endogenous regulator of dormancy. Clematis hirsutissima, commonly known as Sugarbowls, in the plant family Ranunculaceae, is an important perennial species that contributes to biodiversity in western prairie ecosystems by providing habitat for pollinators and wildlife; and it is also a species that shows characteristic embryo dormancy. This native to Washington, has been used …

Oregon State Rank Assessment For Mountain Townsendia (Townsendia Montana), Lindsey K. Wise

Institute for Natural Resources Publications

Oregon state conservation status assessment for mountain townsendia (Townsendia montana) using NatureServe methodology, 2024.

Oregon State Rank Assessment For Chambers' Paintbrush (Castilleja Chambersii), Lindsey K. Wise

Institute for Natural Resources Publications

Oregon state conservation status assessment for Chambers' paintbrush (Castilleja chambersii) using NatureServe methodology, 2024.

Scientific Note: An Incursion Of The Widely-Cultivated Katsura (Cercidiphyllum Japonicum, Cercidiphyllaceae) In Pennsylvania, Kayleigh R. Long, Melody P. Sain, Elizabeth H. Williams, Christopher T. Martine

Faculty Journal Articles

Cercidiphyllum japonicum (katsura) is a dioecious tree native to China and Japan. Although imperiled in parts of its natural distribution, the species has become quite common as a cultivated tree in temperate North America. The species is noted as occasionally escaping cultivation in the eastern United States, but few records of established incursions (and the conditions under which they might recruit) exist in the literature. We here report an incursion of C. japonicum in central Pennsylvania, along with notes on seedling recruitment on the Bucknell University campus.

Turtleheads, Iridoids, And Checkerspots, W. John Hayden

Biology Faculty Publications

This article follows the story of how a plant, a molecule, and an herbivore interact with each other. The plant, of course, is White Turtlehead (Chelone glabra), the 2024 VNPS Wild􀏐lower of the Year; the molecule is something called an iridoid glycoside; and the herbivore is the Baltimore Checkerspot Butterfly (Euphydras phaeton).

New Insights On Hybridization In Potamogeton Floridanus (The Florida Pondweed), Kaitlyn R. Sampson

Graduate Theses and Dissertations (2019 - present)

Freshwater ecosystems are some of the most important and highest threatened habitats in the world, and aquatic plants play an important, but often-overlooked, role in maintaining them. Potamogeton is a diverse and ecologically important aquatic plant genus well known for taxonomic difficulty and rampant hybridization. lbis study aimed to 1) test the hypothesis that Potamogeton jloridanus (Florida pondweed) is a hybrid between P. oakesianus and P. pulcher, and 2) to investigate correlations in ecological conditions for the focal species. This study revealed the discovery of a new population of P. jloridanus in Big Coldwater Creek in Santa Rosa Co., FL, …

Long-Term Patterns And Mechanisms Of Plant Invasions In Forests: The Role Of Forest Age And Land-Use History, Chad C. Jones, Matthew H. Yamamoto

Botany Faculty Publications

It has become increasingly apparent that even mature forests are susceptible to plant invasions. However, invasive plants are often more abundant in younger forest stands. It is difficult to disentangle possible mechanisms that would explain this pattern due to the scarcity of long-term studies in successional forests. Several mechanisms have been proposed to explain patterns of invasions as forests age, including biotic resistance, window of opportunity, historical legacies, and invasion debt. We explored patterns and potential mechanisms of plant invasions over 70 years in a regenerating forest with different land-use histories in the Bolleswood Natural Area, Connecticut, USA. We examined …