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Expression Of Apoplast-Targeted Plant Defensin Mtdef4.2 Confers Resistance To Leaf Rust Pathogen Puccinia Triticina But Does Not Affect Mycorrhizal Symbiosis In Transgenic Wheat, Jagdeep Kaur, John Fellers, Alok Adholeya, Siva L.S. Velivelli, Kaoutar El-Mounadi, Natalya Nersesian, Thomas Clemente, Dilip Shah

Department of Agronomy and Horticulture: Faculty Publications

Rust fungi of the order Pucciniales are destructive pathogens of wheat worldwide. Leaf rust caused by the obligate, biotrophic basidiomycete fungus Puccinia triticina (Pt) is an economically important disease capable of causing up to 50 % yield losses. Historically, resistant wheat cultivars have been used to control leaf rust, but genetic resistance is ephemeral and breaks down with the emergence of new virulent Pt races. There is a need to develop alternative measures for control of leaf rust in wheat. Development of transgenic wheat expressing an antifungal defensin offers a promising approach to complement the endogenous resistance genes …

Biogeographic Divergences In The Iberian Flora. A Morpho-Anatomic,Issr-Based, And Environmental Study Of Iberian Buxus Sempervirens L., Márcia Carvalho, João Rocha, Valdemar Carnide, Sandra Martins, Maurici Mus, Francisco Amich, Rubim Almeida, Claúdia Machado, Berta Gonçalves, Eunice Bacelar, Antonio Crespi

Turkish Journal of Botany

Iberian Buxus spp. Are represented by B. Sempervirens, restricted to the Cantabrian, eastern Iberian Peninsula, and northeastern mountain systems, emerging scarcely in Portugal, and by B. Balearica that occurs in the Betic deep river valleys and in the Balearic islands. The genetic affinity existent between fifteen populations of B. Sempervirens was evaluated by seven ISSRs primers. Moreover, leaf morpho-anatomical measurements indicative of leaf performance (such as leaf area, leaf mass per unit area, width, length, shape factor, tissues thickness, stomatal density, and quantification of epi- and intracuticular waxes) and environmental characterization were conducted to get insight into the functional ecology …

Cladonia Trapezuntica (Cladoniaceae, Lichenized Ascomycota): A Robust Morphotype Of Pycnothelia Papillaria, A Taxonomic Study With Conservational Survey, Ayhan Şenkardeşler, Demet Cansaran Duman, Laszlo Lökös, Teuvo Ahti

Turkish Journal of Botany

The long-neglected lichen described as Cladonia trapezuntica was rediscovered at its type locality in Turkey thanks to historical maps available at the Natural History Museum in Vienna. Molecular, morphological, and chemical analyses were applied to determine whether C. Trapezuntica is a distinct species or rather falls within the phenotypic variation of Pycnothelia papillaria. Although most of the podetia appear to be unusual for P. Papillaria, the molecular evidence indicates that C. Trapezuntica should be considered as a synonym of P. Papillaria, and the cushion-like growth form, taller podetia with irregular to dichotomously or trichotomously branching pattern, and scarce primary thallus …

A New Species Of Lepiota, Lepiota Lahorensis, From Lahore, Pakistan, Tayyaba Qasim, Abdul Khalid, Else Vellinga

Turkish Journal of Botany

Lepiota lahorensis sp. nov. is described from Lahore, Pakistan. Its characterizing features are pinkish brown pileus with dark brown furfuraceous scales, oblong to ellipsoid spores, clavate cheilocystidia, and pileus covering made up of trichodermal elements without shorter elements at their base. The phylogenetic analysis based on nuclear ribosomal internal transcribed spacer sequence shows its unique position in sect. Ovisporae.

Labellum Micromorphology Of Some Orchid Genera (Orchidaceae) Distributed In The Black Sea Region In Turkey, Şenay Süngü Şeker, Mustafa Kemal Akbulut, Gülcan Şenel

Turkish Journal of Botany

A detailed micromorphological analysis of the labellum was carried out using both light and scanning electron microscopy on 14 genera (Anacamptis, Cephalanthera, Coeloglossum, Dactylorhiza, Gymnadenia, Himantoglossum, Limodorum, Neottia, Orchis, Ophrys, Platanthera, Serapias, Spiranthes, and Steveniella) of Orchidaceae in Turkey. In the samples, various epidermal features were identified in the spur that developmentally are invaginations of the labellum and the adaxial surface of the labellum. Typical secretory cells and inclusions such as starch or calcium oxalate crystals of different sizes and shapes were found within the structure of individuals. In many genera, characteristically shaped secretory trichomes and papillae were concentrated at …

Soil Properties Affect Establishment Of Invasive Species, Celastrus Orbiculatus, In A Lower Hudson River Riparian Ecosystem, Shabana Hoosein Hoosein

Legacy Theses & Dissertations (2009 - 2024)

The Hudson River Estuary has been colonized by numerous terrestrial invasive plant species, due in part to its history of anthropogenic and natural disturbance riparian dynamics. This study investigates the spatial patterns of a widespread invasion by Oriental (or Asiatic) bittersweet (Celastrus orbiculatus Thunb.) in Schodack Island State Park, Rensselaer and Columbia Counties. The Park is home to rare species and communities, several of which are threatened by the encroachment of bittersweet. Bittersweet populations were mapped and surveyed on a fixed grid throughout the island, to determine distribution patterns. Stem densities were approximately 50% higher in sites with dredged material …

Exogenous Nitric Oxide Protects Against Drought-Induced Oxidativestress In Malus Rootstocks, Linsen Zhang, Xuewei Li, Xifeng Li, Zhou Wei, Mingyu Han, Lixin Zhang, Bingzhi Li

Turkish Journal of Botany

D?rought is a major environmental stress that limits the growth and productivity of fruit trees in semiarid and arid regions. We evaluated the potential of exogenous nitric oxide (NO) to improve the drought tolerance of apple rootstocks (Malus spp.). Leaves of 2-year-old seedlings of drought-sensitive Malus hupehensis (Pamp.) Rehd. And drought-tolerant Malus sieversii (Ledeb.) M.Roem. Rootstocks were sprayed with NO donor sodium nitroprusside (SNP) at 0-400 μmol L-1, and then the plants were subjected to drought stress. Among all SNP treatments, the 300 μmol L-1 SNP treatment mostly alleviated drought-induced ion leakage and the accumulation of malondialdehyde and solu?ble proteins …

Characteristics Of Desert Vegetation Along Four Transects In The Aridenvironment Of Southern Egypt, Fawzy Salama, Monier Abd El-Ghani, Mohamed Gadallah, Salah El Naggar, Ahmed Amro

Turkish Journal of Botany

The floristic diversity and vegetation-environment relations in the southern part of the Eastern Desert, between 26°45?N and 24°1?N and between 32°45?E and 35°00?E and covering a total area of about 54,500 km2, were investigated. For this purpose, 142 georeferenced stands distributed in four transects were selected: 22 from Qena-Safaga road (T1), 28 from Idfu-Marsa Alam road (T2), 46 from Aswan-Kharit-Gimal (T3), and 46 from Red Sea Coastal Plain (T4). Altogether, 94 species belonging to 33 families were recorded, and the species richness (SR) varied from one transect to another: 46, 35, 52, and 46 in T1, T2, T3, and T4, …

Astragalus Unalii (Fabaceae), A New Species From Turkey, Ömer Çeçen, Zeki̇ Aytaç, Hüseyi̇n Misirdali

Turkish Journal of Botany

Astragalus unalii Çeçen, Aytaç and Mısırdalı, sp. Nov. (Fabaceae, sect. Malacothrix Bunge) is described as a new species from Karadağ (Karaman Province) in southern Anatolia and compared with its relatives growing in steppe vegetation. The new species is close to A. Tauricola Boiss. And A. Adiyamanensis Podlech and M.Ekici, endemic and growing in central and southern parts of Anatolia, Turkey. Taxonomic descriptions, pollen and seed characters, and geographical distribution of the new species are presented.

New Species And A Synonym Of The Genus Hesperis (Brassicaceae) From Turkey, Ahmet Duran, Özlem Çeti̇n

Turkish Journal of Botany

Hesperis tosyaensis A.Duran, a new species from northern Anatolia, is described and illustrated. It grows under open Quercus forest. The new species is distinct from the closely allied H. Ozcelikii A.Duran by the following features: stem erect, 45-90 cm tall, hispid, hairs 2-2.5 mm, and fruit glabrous. Genetic differentiation between closely related Hesperis L. Taxa and Matthiola W.T.Aiton was examined by molecular analyses of the ISSR. The chromosome number for Hesperis tosyaensis is 2n = 14. Information is also presented on its ecology and conservation status. In addition, Hesperis aspera E.Fourn. İs treated as a synonym of Hesperis bicuspidata (Willd.) …

A New Species Of Onosma L. (Boraginaceae) From Anatolia, Riza Bi̇nzet

Turkish Journal of Botany

Onosma malatyana Binzet is described and illustrated as a new species from Malatya and Tunceli provinces in eastern Anatolia, Turkey. The new species belongs to sect. Onosma L. Subsect. Asterotricha (Boiss.) Gürke. And is closely similar to O. Auriculata DC. And O. Gigantea Lam. Diagnostic morphological and palynological characters of these species are compared and discussed. The new species distinctly differs from the similar two species by its patent setose and short hair of stem indumentum; 60-85 × 20-40 mm, oblanceolate-obovate basal leaves; hairy corolla; and having 4.5 × 4 mm, obtuse-acuminate nutlets with ventral keel and horizontally incurved beak. …

New Macrofungi Records From Turkey And Macrofungal Diversity Of Pozantı-Adana, Hasan Hüseyi̇n Doğan, Fevzi̇ Kurt

Turkish Journal of Botany

The present study reports on macrofungi species collected from 2003 to 2012 in Pozantı. In the field and during laboratory studies, 157 taxa belonging to 2 divisions and 51 families were identified. Among them, 8 families and 12 taxa belong to Ascomycota, and 43 families and 145 taxa belong to Basidiomycota. Moreover, 10 taxa"Dumontinia tuberosa, Lycoperdon lambinonii, Conocybe mesospora, Pholiotina striipes, Hebeloma sordidum, Antrodia ramentacea, Leucogyrophana romellii, Diplomitoporus flavescens, Alutaceodontia alutacea, and Tulasnella violea"were found in the Turkish mycobiota for the first time.

Effects Of Elevated Co2 And Nutrients On The Community Metabolism Of A Cymodocea Nodosa Bed, Faisal Khan, Ana Alexandre, Hadayet Ullah, Rui Santos

Turkish Journal of Botany

We assessed the combined effects of elevated CO2 and nutrients on the metabolism of a benthic community dominated by the seagrass Cymodocea nodosa (Ucria) Ascherson in a mesocosm experiment. C. Nodosa plants and their associated community were exposed to two CO2 levels simulating future (700 ppm, pH 7.84) and current (360 ppm, pH 8.12) conditions, and two nutrient levels (enriched and ambient concentration) in a total of four treatments (-C-N, -C+N, +C-N, +C+N). Net community production (NCP) was estimated from changes in the concentration of dissolved inorganic carbon in the seawater in light incubations using benthic chambers. The variation pattern …

Inocybe Kohistanensis, A New Species From Swat, Pakistan, Sana Jabeen, Ishtiaq Ahmad, Abdur Rashid, Abdul Khalid

Turkish Journal of Botany

Inocybe kohistanensis, a new species, is described from Swat, Khyber Pakhtunkhwa, Pakistan, on the basis of morphological characters as well as molecular phylogenetic analyses. The new species is characterized by a fibrillose reddish brown pileus, pruinose stipe with a prominent marginate bulb, and nodular spores. Sequences from the internal transcribed spacer region suggest that I. Kohistanensis is distinct from all other Inocybe species sampled.

Contribution To The Epiphytic Flora And Vegetation Of The Lakes District In The Burdur Region (Turkey), Mevlüt Alataş, Recep Kara, Tülay Ezer, Nevzat Batan, Turan Özdemi̇r

Turkish Journal of Botany

In this study the epiphytic bryophyte flora and vegetation of the Bucak Sweetgum Forest Nature Park and Karacaören Dams Environment (Burdur, Turkey) were investigated between 2012 and 2013. We identified 221 bryophyte specimens collected from tree trunks; a total of 37 bryophyte taxa (8 liverworts and 29 mosses) belonging to 19 genera and 15 families were identified. As a result of the evaluation of 29 relevés of different sizes taken from trunks using the Braun-Blanquet method, Leptodonto smithii-Leucodontetum sciuroidis and Cryphaeetum arborae (with both subassociation typicum and subassociation orthotrichetosum diaphani) belonging to the Fabronion pusillae alliance were recorded for the …

Alyssum Amasianum (Brassicaceae), A New Species From North Anatolia, Turkey, Osman Karabacak, Ahmet Duran, Mustafa Çeli̇k

Turkish Journal of Botany

Herein a new species, Alyssum amasianum, is described and illustrated from North Anatolia. The new species is very similar to A. hirsutum subsp. caespitosum but differs in the shape and indumentum of leaves, trichome type of the fruits, and margin of the seeds. The ecology, biogeography, and conservation status of the new species are discussed. The leaf, fruit, and seed surface micromorphology of A. amasianum, A. hirsutum subsp. caespitosum, A. hirsutum subsp. hirsutum, A. strigosum subsp. strigosum, and A. xanthocarpum were also examined by scanning electron microscope.

Two New Records And One Confirmation Of The Genus Poa L. (Poaceae) For The Flora Of Turkey, Evren Cabi̇, Robert J. Soreng

Turkish Journal of Botany

The ongoing revision of the genus Poa in Turkey has resulted in two new Poa records for the Flora of Turkey as Poa pratensis subsp. irrigata (Lindm.) H. Lindb. and Poa eigii Feinbrun. In addition, the presence of Poa palustris L. is confirmed. A brief discussion and an illustration for each taxon are provided.

Phylogenetic Relationships Among Native Oxytropis Species In Turkey Using The Trnl Intron, Trnl-F Igs, And Trnv Intron Cpdna Regions, Ayten Tekpinar, Seher Karaman Erkul, Zeki̇ Aytaç, Zeki̇ Kaya

Turkish Journal of Botany

We tested the phylogenetic utility of three chloroplast DNA loci, i.e. the trnL(UAA) intron, trnL(UAA)-F(GAA) intergenic spacer (IGS), and trnV(UAC) intron, across thirteen native Oxytropis species. Our objective was to determine whether any of these chloroplast DNA markers could be beneficial to figure out phylogenetic relationships among Oxytropis species. To increase the interspecific sampling, nine sequences of the trnL intron and trnL-F regions were retrieved from GenBank and included in the analyses. No sequence of the trnV intron region was available in the database and so only sequences of the native species were used for the analyses. Phylogenies derived from …

Identification Of Differentially Expressed Genes From Fusarium Oxysporum F. Sp Cubense And Trichoderma Asperellum (Prr2) Interaction In The Susceptible Banana Cultivar Grand Naine, Thangavelu Raman, Varun Gopalakrishnan, Ganga Devi Perumal

Turkish Journal of Botany

Identification of defense-related genes in the host is one of the most essential steps in understanding disease resistance mechanisms in plants. In this study, a suppression subtractive hybridization (SSH) library was constructed to study differential gene expression in banana plants mediated through a Fusarium wilt pathogen (Fusarium oxysporum f.sp cubense - Foc) and its interaction with the Foc effective biocontrol agent Trichoderma asperellum (prr2). Here cDNAs from the roots of banana cv. Grand Naine infected by Foc were used as the driver and cDNAs from Foc + T. asperellum inoculated banana plants as the tester population. After hybridization and cloning, …

Plant Biomass: Insights From Imaging Cell Walls Using Molecular Probes, Utku Avci

Turkish Journal of Botany

Cell walls are an important and growing subject of research in plant biology. In the last decade, there has been an increasing interest in using cell walls as feedstock for the production of second generation biofuels. This has resulted in an expansion in the number of cell wall studies and has highlighted the need for a better understanding of cell wall structure and function. Cell walls are composed of polymers with complex and dynamic structures that vary between cell types and developmental stages as well as between taxonomic groups of plants. To address the diversity of glycans that form the …

Diversity And Ecology Of Benthic Algae In Karagöl Lake, Karagöl-Saharanational Park (Şavşat, Artvin, Turkey), Bülent Akar, Bülent Şahi̇n

Turkish Journal of Botany

Benthic algal flora of Karagöl Lake, its seasonal variation, and the physical and chemical parameters of the water were studied between October 2008 and September 2010. The algal flora consisted of 112 taxa belonging to the divisions Charophyta (41), Chlorophyta (33), Cyanobacteria (18), Euglenozoa (17), Miozoa (2), and Ochrophyta (1). Six desmid taxa found in this research are new records for the freshwater algal flora of Turkey. The qualitative dominance of benthic taxa typical of slightly alkaline and mesotrophic ecosystems was observed. The qualitative and seasonal variations in epipelic taxa analyzed were dependent on the physicochemical characteristics of the water. …

Nebline, January 2016

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Feature: Extension 2015 Highlights

Food & Health

Farm & Acreage

Horticulture

Family Living

Pests & Wildlife

4-H & Youth

Extension Calendar

and other extension news and events

Invasibility Of Three Major Non-Native Invasive Shrubs And Associated Factors In Upper Midwest U.S. Forest Lands, W. Keith Moser, Zhaofei Fan, Mark H. Hansen, Michael K. Crosby, Shirley X. Fan

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

We used non-native invasive plant data from the United States Forest Service’s Forest Inventory and Analysis (FIA) program, spatial statistical methods, and the space (cover class)-for-time approach to quantify the invasion potential and success (‘‘invasibility”) of three major invasive shrubs (multiflora rose, non-native bush honeysuckles, and common buckthorn) in broadly classified forest-type groups in seven Upper Midwest states. Smoothed maps of presence and cover percent showed a strong clustering pattern for all three invasive shrubs despite their different ranges. The species are clustered around major cities or urban areas (e.g., Chicago, Illinois, and Des Moines, Iowa), indicating the potential role …

Cattle Grazing Effects On Phragmites Australis In Nebraska, Jerry D. Volesky, Stephen L. Young, Karla H. Jenkins Pas

West Central Research and Extension Center, North Platte

Phragmites australis (common reed) is one of the most widely distributed flowering plants in North America. The introduced lineage occurs in wetland and riparian areas covering a range of climatic types. In Nebraska, an abundance of livestock could help to reduce P. australis with proper timing and grazing intensities. In 2011, a 3-yr study was initiated to evaluate targeted cattle grazing and herbicide effects and the nutritive value of this species. Treatments included a single application of imazapyr (Habitatt, BASF Corporation, Research Triangle Park, NC) herbicide applied in the first year, grazing, and a control. Grazing was applied for up …

Snrna 3' End Processing By A Cpsf73- Containing Complex Essential For Development In Arabidopsis, Yunfeng Liu, Shengjun Li, Yuan Chen, Athen N. Kimberlin, Edgar B. Cahoon, Bin Yu

Center for Plant Science Innovation: Faculty Publications

Uridine-rich small nuclear RNAs (snRNAs) are the basal components of the spliceosome and play essential roles in splicing. The biogenesis of the majority of snRNAs involves 3’ end endonucleolytic cleavage of the nascent transcript from the elongating DNA-dependent RNA ploymerase II. However, the protein factors responsible for this process remain elusive in plants. Here, we show that DEFECTIVE in snRNA PROCESSING 1 (DSP1) is an essential protein for snRNA 3’ end maturation in Arabidopsis. A hypomorphic dsp1-1 mutation causes pleiotropic developmental defects, impairs the 3’ end processing of snRNAs, increases the levels of snRNA primary transcripts (pre-snRNAs), and alters …

Evolutionary Dynamics Of The Plastid Inverted Repeat: The Effects Of Expansion, Contraction, And Loss On Substitution Rates, Andan Zhu, Wenhu Guo, Weishu Fan, Jeffrey P. Mower

Center for Plant Science Innovation: Faculty Publications

• Rates of nucleotide substitution were previously shown to be several times slower in the plastid inverted repeat (IR) compared with single-copy (SC) regions, suggesting that the IR provides enhanced copy-correction activity.

• To examine the generality of this synonymous rate dependence on the IR, we compared plastomes from 69 pairs of closely related species representing 52 families of angiosperms, gymnosperms, and ferns.

• We explored the breadth of IR boundary shifts in land plants and demonstrate that synonymous substitution rates are, on average, 3.7 times slower in IR genes than in SC genes. In addition, genes moved from the SC into the …

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Evaluation Of Tillage, Crop Rotation, And Cover Crop Impacts On Corn Nitrogen Requirements In Southeastern South Dakota, Sara Louise Berg

Electronic Theses and Dissertations

Nitrogen (N) is a vital factor of corn (Zea mays) production. Previous work in South Dakota has shown that there is uncertainty as to whether nitrogen requirements are the same for corn raised under no-till (NT) versus conventional till (CT) production systems. The objective of this study was to evaluate whether N requirements continue to be greater under long-term NT versus CT production systems in southeastern South Dakota, while also considering effects from cover crops and crop rotation. This was a two year study conducted at the SDSU Southeast Research Farm near Beresford, SD; it was superimposed on a long-term …

Active Aggregation Among Sexes In Bean Flower Thrips (Megalurothrips Sjostedti) On Cowpea (Vigna Unguiculata), Saliou Niassy, Sunday Ekesi, Nguya K. Maniania, Benedict Orindi, Gerald B. Moritz, Willem J. De Kogel, Sevgan Subramanian

All Peer-Reviewed Publications

Male sexual aggregations are a common territorial, mating-related or resource-based, behaviour observed in diverse organisms, including insects such as thrips. The influence of factors such as plant substrate, time of day, and geographic location on aggregation of thrips is uncertain, therefore we monitored the dispersion of male and female bean flower thrips (BFT), Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), on cowpea, Vigna unguiculata (L.) Walp. (Fabaceae), over three cowpea growth stages and across three cowpea-growing areas of Kenya. Our results indicated that for all the crop growth stages, the density of BFTs varied over the time of day, with higher densities …

2015 Butternut Squash Cereal Rye Cover Crop Trial, Ben Phillips

Midwest Vegetable Trial Reports

No abstract provided.

Age-Old Palms On Florida’S Ancient Ridges, Warren G. Abrahamson Ii

Faculty Journal Articles

Genetic fingerprinting, ramet growth rate determinations, and mathematical modeling (Minimum branching trees) were used to estimate clone ages of saw palmettos at Archbold Biological Station in Florida. Growth rates indicate that 500 year old saw palmetto ramets are common. Genetically identified clones (genets) are estimated to be thousands of years old, likely exceeding 5,000 years of age.