Botany Commons^™

Refinement Of A Vitrification Protocol For Protocorm-Like Bodies Of Dendrobium Sonia-28, Ranjetta Poobathy, Uma Rani Sinniah, Maziah Mahmood, Sreeramanan Subramaniam

Turkish Journal of Botany

The hybrid Dendrobium sonia-28 is an important ornamental orchid in the Malaysian flower industry. However, it faces the risk of producing heterozygous progenies through conventional seed propagation or somaclonal variation. Cryopreservation is a favoured long-term storage method in the preservation and maintenance of orchids with specific desired traits. This paper presents a successful cryopreservation protocol for protocorm-like bodies (PLBs) of Dendrobium sonia-28 through the vitrification technique and the use of ascorbic acid and charcoal. Survival assessments were conducted through growth evaluations and visual and spectrophotometric 2,3,5-triphenyltetrazolium chloride assays. Results of this study, an improvement over the previous protocol applied to …

Identification Of Benzoin Obtained From Calli Of Styrax Officinalis By Hplc, Hati̇ce Demi̇ray, Ayli̇n Eşi̇z Dereboylu, Zeki̇ye Işin Yazici, Fati̇h Karabey

Turkish Journal of Botany

The stem tissue of Styrax officinalis L. distributed in West Anatolia was induced with agents such as boric acid and cocarboxylase (thiamine diphosphate), extensive stimulators of resin channels, in order to increase the amount of benzoin volatile oil. While the benzoin content was 120% in the induction medium to which excess boron and niacin were added, it increased to 231% when cocarboxylase (thiamine diphosphate) was added to the medium. Benzoin content of Styrax from petiole calli was 166%. HPLC-DAD results revealed that benzoin resin was present in 90% of the stems of Styrax officinalis distributed in West Anatolia. The major …

Contributions To Lichen Diversity Of Turkey From The Sarısu Area (Kocaeli), Gülşah Çobanoğlu, Bi̇rkan Açikgöz, Laurentiu Baloniu

Turkish Journal of Botany

A total of 85 lichen taxa from the Sarısu area of the district of Kandıra in Kocaeli Province were listed. Three new records for the biota of Turkey, Coenogonium pineti (Ach.) Lücking & Lumbsch, Lecania cuprea (A.Massal.) Van den Boom & Coppins, and Opegrapha calcarea Turner ex Sm., have been identified within the context of this study along with 81 new taxa for the province of Kocaeli.

The Revision Of Genus Seseli (Umbelliferae) In Turkey, Ebru Doğan Güner, Hayri̇ Duman

Turkish Journal of Botany

Seseli L. is represented by 12 taxa (species and subspecies) in the Flora of Turkey. On the basis of morphological examination and field investigation, we have revised the genus Seseli in Turkey. The following are provided for each taxon: a description, along with the complete synonymy and notes on nomenclature, geographical distribution, habitat, IUCN conservation status assessment, and selected materials examined. Two new species from Turkey, Seseli marashica E.Doğan & H.Duman and S. serpentina B.L.Burtt ex H.Duman & E.Doğan, are also described. One taxon is reduced to synonymy: S. paphlagonicum Pimenov & Kljuykov is a synonym of S. gummiferum Pallas …

Rafflesia Sharifah-Hapsahiae (Rafflesiaceae), A New Species From Peninsular Malaysia, Jumaat Haji Adam, Rahmah Mohamed, Mohd Afiq Aizat Juhari, Nik Nadira Farhana Nik Ariff, Kiew-Lian Wan

Turkish Journal of Botany

A new species of the genus Rafflesia, Rafflesia sharifah-hapsahiae, is described, with illustrations. A key to 2 related species of Rafflesia of Peninsular Malaysia is also provided. A discussion on its differences and similarities with Rafflesia azlanii and Rafflesia hasseltii is presented.

Morphological And Ecological Evidence For A New Infraspecific Taxon Of The Wallflower Erysimum Cheiri (Brassicaceae) As An Indigenous Endemism Of The Southwestern Mediterranean, Samira Ouarmim, Chloe Dubset, Errol Vela

Turkish Journal of Botany

The wallflower Erysimum cheiri is a horticultural cruciferous growing as garden-escaped with a wide distribution in West and South Europe. In Algeria, it is locally found on the northern cliffs of the National Park of Gouraya (Kabylia). The aim of this study is to compare the populations of E. cheiri identified in Algeria with those found in Mediterranean France. To study the differences between both sites, a morphological and ecological analysis was undertaken on 6 populations growing in Algeria and France. Ecological communities where wallflower is growing in Algeria are dominated by indigenous plants with a significant proportion of endemic …

A New Species And 2 New Records From Turkey, Zeki̇ Aytaç, Hayri̇ Duman

Turkish Journal of Botany

Campanula aktascii Aytaç & H.Duman (Campanulaceae) has been described as a new species. The diagnostic characters of C. aktascii were compared and discussed with its resembling species and the ecology and phenology of the new species were presented. Onopordum rhodense Boiss. ex Rech.f. (Asteraceae) and Daucus conchitae W.Greuter (Apiaceae) have been reported as a new records from Antalya (South Anatolia) for Turkey. The distribution map and Red List categories of these taxa according to the IUCN were also given.

Monitoring Of Vascular Plant Diversity In A Changing Climate In The Alpine Zone Of The Central Greater Caucasus, Khatuna Gigauri, Maia Akhalkatsi, George Nakhutsrishvili, Otar Abdaladze

Turkish Journal of Botany

Short-term changes in plant species number, cover, frequency, and composition were studied along an altitudinal gradient crossing 4 GLORIA summits (from 2240 m to 3024 m a.s.l.) from the treeline ecotone to the subnival zone in the Central Caucasus. Large-scale (summit area) and small-scale (16 plots of 1 m^{2}/summit) patterns were monitored in 2001. Recording was repeated in 2008. During the monitoring period, the average soil temperature and growing-degree days did not significantly increase. After 7 years, a revisitation of the summit area revealed a considerable increase of species richness, especially at the lower alpine zone (CP1 and CP2 summits). …

Ranking Of 11 Coastal Halophytes From Salt Marshes In Northwest Turkey According Their Salt Tolerance, Christian Zörb, Ali̇ Sümer, Ali̇ Sungur, Timothy J. Flowers, Hasan Özcan

Turkish Journal of Botany

Salt-affected soils with high electrolyte contents limit the development of the majority of plants and serve as a habitat only for such species (halophytes) that can survive the conditions. To date, there is still much that is unknown about the physiological mechanisms, including ion relationships, that make plants salt-resistant. The primary aim of this study was to evaluate a method of ranking plants for their salt tolerance. A total of 11 coastal halophytes of the Kavak Delta were evaluated for their ability to cope with different soil salinities. For this, electrical conductivities of soils (of up to 135 dS m^{-1}) …

Shortcut To Long-Distance Developing Of A Tissue Culture Medium: Micropropagation Of Mature Almond Cultivars As A Case Study, Mehmet Nuri̇ Nas, Yüksel Bölek, Nevzat Sevgi̇n

Turkish Journal of Botany

Culture medium development methods are time-consuming, laborious, and require a large amount of experimental materials. The Nas hypothesis for the development of a micropropagation medium offers a less time-consuming and a less laborious approach. According to this hypothesis, the composition of a culture medium for a particular species should resemble the seed composition. In accordance with this hypothesis, first, an almond culture medium [Nas Almond Medium (NAM)] was developed based on almond kernel composition. Then, using mature tissues of almond cultivars, the growth of cultures on NAM was compared to that on Murashige and Skoog medium (MS), Woody Plant Medium …

Callogenesis And Production Of Anthocyanin And Chlorophyll In Callus Cultures Of Vegetative And Floral Explants In Rosa Gallica And Rosa Hybrida (Rosaceae), Roshanak Tarrahi, Farkhondeh Rezanejad

Turkish Journal of Botany

Callogenesis using vegetative (leaf, stem, petiole) and floral (petal, pistil, anther) explants of Rosa gallica and R. hybrida was investigated using different combinations of 2,4-dichlorophenoxyacetic acid, 6-benzylaminopurine, and gibberellic acid on modified Murashige and Skoog medium. The highest callogenesis was obtained on Murashige and Skoog medium containing ratios of 2 and 3 mg L^{-1} of 2,4-dichlorophenoxyacetic acid to 1 mg L^{-1} of 6-benzylamino purine in both species depending on type of explant. Stem explants in R. gallica initiated callus after 4 days while the other explants in R. gallica and all explants in R. hybrida showed the greatest percentage of …

Protective Role Of Foliar-Applied Nitric Oxide In Triticum Aestivum Under Saline Stress, Farhana Kausar, Muhammad Shahbaz, Muhammad Ashraf

Turkish Journal of Botany

A study was conducted to assess whether foliar-applied nitric oxide (NO) could alleviate the adverse effects of salt stress on wheat (Triticum aestivum L.). Four sodium nitroprusside levels (control [water spray] and 0.05, 0.10, and 0.15 mM) were sprayed as a donor of NO on the leaves of cultivar S-24 plants grown under nonsaline and saline conditions (150 mM NaCl). Data for growth and yield, chlorophyll contents, activities of antioxidants, and concentrations of mineral nutrients were recorded. Root-medium salinity adversely affected shoot and root dry weight, shoot length, and yield attributes of the wheat plants while it enhanced the activities …

Euglenozoa Occurring In Adzopé Reservoir, Côte D’Ivoire, Ble Alexis Tardy Kouassi, Allassane Ouattara, Kouhete Philippe Da

Turkish Journal of Botany

The Euglenozoa flora of the Adzope Reservoir in Côte d'Ivoire was investigated from January to December 2005. The species composition of the assemblage was compiled, accompanied by illustrations. Forty-four taxa were identified in the temporal survey. Ten taxa (22.22%) are new for Côte d'Ivoire. The taxonomic structure presents 22.32% of the species common to the freshwater of West Africa, with most of the taxa (89.5%) found to be cosmopolitan. An endemic taxon, Trachelomonas pisciformis var. bicoronata Coute & Iltis (Euglenaceae), was observed. The assemblage was dominated by Trachelomonas Ehrenberg and Phacus Ehrenberg, which represented 47.72% and 29.54% of identified taxa, …

A Study Of The Genes Tfl1 And Lfy As Agents In The Divergent Evolution Of The Plant Species Arabidopsis Thaliana And Carica Papaya, Ryan Lockard

Honors Program Theses

The long term goals of this study are to: (1) To determine if the genes TFLI and LFY perform any role in the divergent evolution and development of these two plant species; (2) If so, begin to assess whether the homologs' functional divergence is a result of gene regulation, protein function, both, or some different genetic mechanism altogether. These goals will be accomplished by genetically transforming Arabidopsis thaliana plants containing TFLI and LFY knockout mutations (those genes removed) with the homologous genes from Carica papaya in order to compare differences in development between the plants resulting from the influence of …

Morphology, Structure, Function And Evolution Of Infrastaminal Scales In Cuscuta (Convolvulaceae), Stephanie Riviere

Theses and Dissertations (Comprehensive)

Cuscuta (dodder, Convolvulaceae) is a genus of about 200 species of obligate stem parasites of cosmopolitan distribution. Infrastaminal scales (IFS) are staminode-like formations that surround the ovary in the flowers of dodders. Their morphological diversity has historically provided some of the most useful taxonomic diagnostic characters at the species-level, however, their function had not been determined. I performed a comparative study of the IFS in 147 taxa using light, scanning and transmission electron microscopy, and results were analyzed in relation to a Cuscuta phylogeny obtained from a combined analysis of rbcL and 26S rDNA gene sequences. To test the hypothesis …

La Serreta Endokarst (Se Spain): A Sustainable Value?, Antonia D. Asencio, Teodoro Espinosa

International Journal of Speleology

La Serreta endokarst (SE Spain), which UNESCO declared a World Heritage Site in 1998, was considered a sanctuary with cave art and one of the most important archaeological sites in the Mediterranean region for both the remains it hosts and the spectacular karstic landscape at the site.

To coincide with the 40th anniversary of its discovery, the La Serreta cave-chasm was adapted for public use with the intention of showing visitors the remains, which date back to prehistoric times. The solution included attempts to minimize contact with the valuables in the cave in order to alter the existing remains as …