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Showing 1 to 20 of 103 for “"stomata"”.

  1. Evolution of stomata in mosses (Bryophyta): From molecules to form and function

    Merced-Alejandro, Amelia2016

    … origin, diversification, and early function of stomata. Unlike tracheophytes that have stomata on anatomically complex leaves and stems, mosses bear stomata exclusively on spore-bearing organs (capsules). However, stomata do not occur in all mosses and, indeed, are absence in the …

    siu-theses Repository record

  2. Analisis karakteristik stomata, kadar klorofil dan kandungan logam berat pada daun pohon pelindung jalan kawasan lumpur Porong Sidoarjo

    Hidayati, Siti RoifatulUniversitas Islam Negeri Maulana Malik Ibrahim2009

    … setiap lokasi dan varietas. Pengamatan ukuran stomata pada semua jenis tanaman yang diamati, baik permukaan atas maupun permukaan bawah daun termasuk dalam kriteria ukuran yang kurang panjang (< 20µ m). Sedangkan stomata permukaan bawah daun lebih rapat dari permukaan atas. Rata-rata kerapatan …

    malang Repository record

  3. Manipulating Guard Cell Anatomy and Physiology Using Biotechnological Approaches to Understanding Impact on Crop Performance

    Oyemike, IfeanyiUniversity of Essex2019

    Stomata are pores on the leaf surrounded by specialized epidermal cells called guard cells (GCs). GCs increase or decrease in volume in response to internal and external stimuli thereby regulating stomata aperture. In most plants, the changes exhibited by GCs alter stomatal aperture and affect the …

    essex Repository record

  4. Studi morfologi dan anatomi daun edelweis Jawa (Anaphalis javanica) pada beberapa ketinggian yang berbeda di Taman Nasional Bromo Tengger Semeru

    Hamzah, Muhammad FathoniUniversitas Islam Negeri Maulana Malik Ibrahim2010

    … yaitu panjang dan lebar daun, kerapatan stomata, indeks stomata, panjang dan lebar stomata. Pengambilan sampel pada dua tempat yang berbeda yaitu di Gunung Batok dan Resort Cemoro Lawang. Penelitian ini dilaksanakan pada bulan April – September 2010, bertempat di Area Taman Nasional Bromo …

    malang Repository record

  5. Kajian aspek anatomi daun beberapa varietas kedelai (Glycine max L.) pada kondisi cekaman kekeringan

    Rofiah, AiUniversitas Islam Negeri Maulana Malik Ibrahim2010

    … varietas kedelai yang diuji yaitu: kerapatan stomata, indeks stomata, lebar celah stomata pada jam 10, kerapatan trikomata dan tebal mesofil. Tingkat ketersediaan air berpengaruh terhadap perubahan aspek anatomi daun kedelai yaitu pada kerapatan stomata, lebar celah stomata, kerapatan …

    malang Repository record

  6. Increased expression of NADP malic enzyme in the guard cells of <i>Arabidopsis</i> plants

    Thakur, Pooja

    <p>Plants lose their water as transpiration by stomatal opening, which is governed by guard cells surrounding the stomata. Influx of ions such as K<sup>+</sup>, Cl-, from neighboring cells into guard cells, and malate synthesis within guard cells increases turgor pressure opening the stomata. …

    emich Repository record

  7. Spatial and temporal variation in stomatal response to climate: a case study of modern and herbarium samples of Salix

    Tunnicliff, LauraUniversity of Hull2013

    … carbon dioxide (CO₂) levels and climate with the stomatal abundance of Salix cinerea (Grey Willow). There are three principle objectives of this research:1. Develop a methodology for obtaining S. cinerea stomatal countsa. In terms of leaf preparationb. In terms of checking for effects of …

    hull Repository record

  8. The role of guard cell chloroplasts in stomatal function and coordinating stomatal and mesophyll responses .

    Batta, KucheliUniversity of Essex2018

    Guard cells controls the stomata through which exchange of gas takes place by balancing between CO2 uptake for photosynthesis and water loss through transpiration leading to ultimate plant water use efficiency (WUE). Climate change is predicted to lead to greater temperatures and reduced water …

    essex Repository record

  9. Design of a microscopy-based screening method for stomatal development genes in <i>arabidopsis thaliana</i>

    Perez, Mercedes Tatiana Quinteros

    <p>Stomata are microscopic pores in the epidermis of plants that regulate gas exchange and transpiration. Regulation of stomatal behavior offers opportunity for crop improvement; stomata are also useful for research into cell patterning, differentiation, and development. The purpose of this project …

    emich Repository record

  10. Evaluasi ketahanan beberapa varietas kacang tanah (Arachis hypogea L) terhadap penyakit karat daun (Puccinia arachidis Speg.)

    Fauzi, Zuli RohmawatiUniversitas Islam Negeri Maulana Malik Ibrahim2010

    … intensitas penyakit, jumlah pustul dan kerapatan stomata. Data hasil penelitian dianalisis secara deskriptif dan untuk mengetahui korelasi antar karakter tanaman, data dianalisis dengan analisis korelasi. Dari 13 varietas kacang tanah yang diamati, 1 varietas menunjukkan respon Tahan , 1 varietas …

    malang Repository record

  11. Stomatal acclimation to dynamic light: implications for photosynthesis and water use efficiency

    Matthews, Jack SAUniversity of Essex2019

    Although stomata typically occupy only a small portion of the leaf surface (0.3-5%), stomata control approximately 95% of all gas exchange between the leaf interior and external environment.Therefore, stomatal behaviour has major consequences for photosynthetic CO2fixation and water loss from leaf …

    essex Repository record

  12. THE INTERPLAY BETWEEN ETHYLENE SIGNALING AND FLAVONOL ANTIOXIDANTS IN MODULATING STOMATAL MOVEMENT AND ROOT ARCHITECTURE

    Watkins, Justin MichaelWake Forest University2017

    … of flavonol antioxidants on modulating stomata closure. Chapter 4 focuses specifically on the targets of ethylene-regulated gene expression and the role of the individual receptor isoforms in modulating root architecture. Combined, these chapters highlight novel signaling mechanisms that …

    wfu Repository record

  13. A multifaceted approach to identifying targets for the improvement of water-use efficiency in Zea mays

    Twohey III, Robert JamesUniversity of Illinois at Urbana-Champaign2019

    … increases in the future. Understanding how stomata will respond to high atmospheric CO2 concentrations and accompanying environmental changes is necessary for the production of efficient crops. Stomata are the major avenue for CO2 uptake and also the avenue for transpirational water loss. As …

    uiuc Repository record

  14. Phylogenetic Analysis of the Genus Pistacia (Anacardiaceae)

    AL-Saghir, Mohannad GhaziVirginia Tech2006

    … anatomical analysis, all species had anomocytic stomata. In most species, the stomata density was higher on the abaxial surface than the adaxial. The ratio of abaxial to adaxial stomatal density varied from 0.0 to 1.7. Stomatal distribution may provide insights into how Pistacia species evolve in …

    vt Repository record

  15. Comparative Anatomy of the Stem in the Carrion Flowers (Apocynaceae-Asclepiadoideae)

    Kajoina, FlorenceTexas State University-San Marcos2010

    … and cuticular striations, and calculation of the stomata! index. Observations showed most species to have distinctive adaptations to the stem succulent habit, including the loss of leaves, development of ribbed stems, production of abundant water storage tissues development of a perennial …

    texas-state Repository record

  16. Quantifying the Sensitivity of Land-Surface Models to Hydrodynamic Stress Limitations on Transpiration

    Matheny, Ashley MichelleThe Ohio State University2013

    … link for the soil-plant-atmosphere continuum. Stomata conductance, which governs transpiration, also provides the link between latent heat flux and carbon uptake rates. Current land-surface models couple stomata conductance and soil moisture through empirical relationships. This approach does …

    ohiolink Repository record

  17. MORPHO-PHYSIOLOGICAL EVALUATIONS OF ALEPPO AND BRUTIA PINE SEEDLINGS UNDER TWO DIFFERENT MOISTURE REGIMES (SYRIA, AFFORESTATION, CHLOROPLASTS).

    ABIDO, MOHAMMAD SULEIMAN.The University of Arizona.1986

    … Aleppo pine had a thicker cuticle, fewer stomata per unit length, per unit area, and per needle than Brutia pine. A significant number of Aleppo pine stomata were sealed with a waxy layer. Brutia pine had shorter needles, smaller needle surface area, a smaller surface area-to-volume ratio, …

    arizona-thes Repository record

  18. Investigation into the role of volatile organic compounds, and abscisic in stomatal regulation, in the resurrection plant Xerophyta humilis

    Beckett, MeganDepartment of Molecular and Cell Biology2011

    … in this study give evidence for an ABA-mediated stomatal closure in response to initial dehydration of X. humilis, however, from 60% RWC onwards, stomata were observed to open again. This supplies further support for the hypothesis that resurrection plants actively lose water once protection is …

    cape-town Repository record

  19. Transport huminových látek skrz rostlinnou kutikulu

    Hývnarová, LucieVysoké učení technické v Brně. Fakulta chemická

    … kutikulou je ten, že spodní kutikula obsahuje stomata. Abych mohla studovat tento transport, bylo nejprve třeba si kutikuly z listu vyseparovat. Použila jsem dvě metody izolace, chemickou, která je agresivnější, ale za to je časově méně náročná (trvá 3 dny) a metodu chemickou, která je sice …

    brno-tech Repository record

  20. Investigations on the influence of CO2 on leaf epidermal development in Arabidopsis thaliana

    Haus, Miranda JeanUniversity of Illinois at Urbana-Champaign2016

    … (p[CO2]). Gas exchange is controlled by stomata, epidermal pores flanked by a pair of guard cells that regulate their aperture in response to light, humidity and p[CO2]. The number (stomatal density, SD) and proportion (stomatal index, SI) of stomata in the leaf epidermis directly affects …

    uiuc Repository record

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