Literatura académica sobre el tema "Mesophyll"

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Artículos de revistas sobre el tema "Mesophyll"

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Sulistiarini, Diah, and Eka Fatmawati Tihurua. "Leaf Anatomy of Three Varians of Arundina graminifolia (D. Don.) Hochr." Jurnal Natur Indonesia 11, no. 2 (2012): 78. http://dx.doi.org/10.31258/jnat.11.2.78-82.

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Three variations of Arundina graminifolia flowers have been recognized, (1) group of big flower with reddish violetlip and purplelish white sepals and petals (2) group of small flower with white lip and white sepals and petals (3)similar to second variation but with purple color on the lip apex. In order to clarify the taxonomy status of thosethree variations, a leaf anatomical study had been carried out. Results of this study showed that there were somedifferences among them in trichome shape and number mesophyll layers. Big flower group of Arundina hastrichome club shape and thick mucous in
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Belaeva, Tatiana N., Liu Si, Alina N. Butenkova, and Alexey S. Prokopyev. "Anatomy of leaves of Siberian species of the genus Lilium in conditions of Western Siberia forest zone." Acta Biologica Sibirica 10 (December 11, 2024): 1573–88. https://doi.org/10.5281/zenodo.14329047.

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Siberia harbors four lily species. The number of Siberian lily populations has declined in recent years due to habitat disturbance caused by anthropogenic impact, including tourism, urban expansion, economic activities, and active harvesting of flowering plants for bouquets. The aim of this study was to conduct a comparative analysis of the leaf anatomical structure of three Siberian species of the genus <em>Lilium </em>(<em>L. pensylvanicum</em> Ker-Gawler,<em> L. pilosiusculum</em> (Freyn) Miscz. and <em>L. pumilum</em> DC.), successfully introduced into the Siberian Botanical Garden of Toms
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Lersten, Nels R., and Curt L. Brubaker. "Paraveinal mesophyll, and its relationship to vein endings, in Solidago canadensis (Asteraceae)." Canadian Journal of Botany 67, no. 5 (1989): 1429–33. http://dx.doi.org/10.1139/b89-190.

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Paraveinal mesophyll is described from leaves of a common goldenrod species, Solidago canadensis L. (tribe Astereae). This is the first report of paraveinal mesophyll from the Asteraceae. It is a uniseriate middle layer consisting of horizontally lobed cells that form a lacy meshwork between veins. It abuts the tightly cylindrical bundle sheath at the level of the xylem in all vascular bundles. Vein endings, however, differ from other vascular bundles in two ways: sieve tube members may extend to the vein tip, end at an intermediate point, or be absent, and lateral bundle sheath cells distal t
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Liljebjelke, Karen A., and Vincent R. Franceschi. "Differentiation of Mesophyll and Paraveinal Mesophyll in Soybean Leaf." Botanical Gazette 152, no. 1 (1991): 34–41. http://dx.doi.org/10.1086/337860.

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Kevekordes, K. G., M. E. McCully, and M. J. Canny. "The occurrence of an extended bundle sheath system (paraveinal mesophyll) in the legumes." Canadian Journal of Botany 66, no. 1 (1988): 94–100. http://dx.doi.org/10.1139/b88-014.

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The tissue previously described as paraveinal mesophyll in soybean leaves is shown to have the characters of bundle sheath rather than mesophyll cells and is renamed "extended bundle sheath" (EBS) tissue. Its presence was surveyed by leaf clearing in 66 species of legumes of all three subfamilies. A complete extended bundle sheath system similar to that previously described in soybean was identified in 21 of the species. This system is a paradermally oriented tissue, one cell deep, between the spongy and palisade mesophylls, consisting of extended bundle sheath cells, which join each other acr
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Kim, InSun, and David G. Fisher. "Structural aspects of the leaves of seven species of Portulaca growing in Hawaii." Canadian Journal of Botany 68, no. 8 (1990): 1803–11. http://dx.doi.org/10.1139/b90-233.

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Seven species of Portulaca growing in Hawaii can be divided into two groups based on the morphology, anatomy, and ultrastructure of their leaves. Portulaca oleracea, P. molokiniensis, P. lutea, forming group A, have spatulate to obovate leaves, paradermal minor veins, and mesophyll cells that completely encircle the minor veins. The chloroplasts in their bundle sheath cells are larger than those in the mesophyll cells and have well-developed grana and reduced peripheral reticulum. Bundle sheath mitochondria are larger and more numerous than those in the mesophyll, and chloroplasts in the mesop
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Pshennikova, L. M. "The implication of leaf anatomical structure for the selective breeding of lilacs." Vavilov Journal of Genetics and Breeding 25, no. 5 (2021): 534–42. http://dx.doi.org/10.18699/vj21.060.

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The cultivars of the common lilac (Syringa vulgaris) grown in the south of the Russian Far East are not always winter-hardy and are often damaged by fungal diseases due to a very humid climate. A promising trend in the selective breeding of lilacs in Russia is the creation of new breeding material based on the gene pool of the broadleaf lilac (S. oblata) and its hybrids in order to introduce valuable adaptive traits into cultivars. The present work aimed to identify the traits of leaf anatomy in species and cultivars of Syringa resistant and susceptible to Pseudocercospora lilacis, the causati
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Théroux-Rancourt, Guillaume, Adam B. Roddy, J. Mason Earles, et al. "Maximum CO 2 diffusion inside leaves is limited by the scaling of cell size and genome size." Proceedings of the Royal Society B: Biological Sciences 288, no. 1945 (2021): 20203145. http://dx.doi.org/10.1098/rspb.2020.3145.

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Maintaining high rates of photosynthesis in leaves requires efficient movement of CO 2 from the atmosphere to the mesophyll cells inside the leaf where CO 2 is converted into sugar. CO 2 diffusion inside the leaf depends directly on the structure of the mesophyll cells and their surrounding airspace, which have been difficult to characterize because of their inherently three-dimensional organization. Yet faster CO 2 diffusion inside the leaf was probably critical in elevating rates of photosynthesis that occurred among angiosperm lineages. Here we characterize the three-dimensional surface are
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Gibadulina, I. I., M. V. Larionov, and N. N. Maslennikova. "Anatomical and Morphological Features of the Leaves of Tilia Cordata Mill. As an Indicator of the Adaptive Capabilities of the Species to the Conditions of the Urban Environment." IOP Conference Series: Earth and Environmental Science 988, no. 3 (2022): 032082. http://dx.doi.org/10.1088/1755-1315/988/3/032082.

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Abstract Study of the anatomical and morphological features of the photosynthetic apparatus of Tilia cordata Mill. showed that the volume of leaf mesophyll cells in an urbanized environment is higher than in natural plantings. The cells of the palisade mesophyll of the leaf have a greater variability of this indicator during the growing season as compared to the cells of the spongy mesophyll. Positive correlations of the indicator of the volume of cells of the palisade mesophyll with the indicator of the air pollution index, the content of phenol, formaldehyde, benzo(a)pyrene and negative corr
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Zvereva, G. K. "The structure of the mesophyll and assimilative apparatus of the chloridoid grasses leaves." Проблемы ботаники южной сибири и монголии 19, no. 2 (2020): 202–6. http://dx.doi.org/10.14258/pbssm.2020103.

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The structure of the mesophyll and assimilative apparatus of leaf blades and leaf sheaths was studied atchloridoid grasses Aeluropus intermedius, Cleistogenes squarrosa, Crypsis aculeata and Tripogon chinensis, growing indifferent habitats of Siberia. All plant species are characterized by the manifestation of C4-coronary syndrome. Spatialforms of mesophyll cells radially arranged around Kranz cells and intercostal zone cells were considered. It is shown, thatleaf mesophyll at xerophytes Cleistogenes squarrosa and Tripogon chinensis is composed of cellular cells. At the grasses of saline habit
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Tesis sobre el tema "Mesophyll"

1

Sheard, J. P. "Glucose uptake by pea mesophyll protoplasts." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235210.

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Lee, Joonsang. "Influence of the mesophyll on stomatal opening." Thesis, University of Aberdeen, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314415.

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This study shows that stomata in the isolated epidermis do not behave like those in the intact leaf and that the mesophyll plays an important role in the mechanism of stomatal opening over short periods. The results suggested that the opening of stomata in isolated epidermis was inferior to that in the intact leaf and was influenced by the concentration of KCl in the medium rather than by light. Stomatal opening in isolated epidermis of <i>Commelina</i> was not only insensitive to light but also unaffected by CO<sub>2</sub> in the medium containing 100 mol m<sup>-3</sup> KCl. The absence of an
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Newell, Jane Marie. "Vacuole development in evacuolated oat mesophyll protoplasts." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295919.

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Hörtensteiner, Stefan. "Re-formation of vacuoles in evacuolated tobacco mesophyll protoplasts /." [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10426.

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Stoll, Marion. "Aktivierende T-DNA-Mutagenese in Nicotiana-tabacum-Mesophyll-Protoplasten." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=96491638X.

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Shrestha, Arjina. "Variability in mesophyll conductance to CO2 in grain legumes." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17559.

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Mesophyll conductance (gm) limits the diffusion of CO2 from sub-stomatal cavities to the carboxylation site and is a significant limitation to photosynthesis. However, there is a lack of complete understanding of gm variability and its regulation under different environmental conditions, and relevant studies in grain legumes are scarce. My research projects aimed to characterize genetic variability in gm, to quantify the response of gm to short- and long-term environmental changes and to assess the relationship of gm with leaf water-use efficiency (WUE) in grain legumes. gm and leaf hydraulic
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Vosloh, Daniel. "Subcellular compartmentation of primary carbon metabolism in mesophyll cells of Arabidopsis thaliana." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5553/.

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Metabolismus in Pflanzenzellen ist stark kompartimentiert. Viele Stoffwechselwege haben Reaktionen in mehr als einem Kompartiment. Zum Beispiel wird während der Photosynthese in pflanzlichen Mesophyllzellen Kohlenstoff in Form von Stärke in den Chloroplasten synthetisiert, während es im Zytosol in Form von Sacharose gebildet und in der Vakuole gespeichert wird. Diese Reaktionen sind strikt reguliert um ein Gleichgewicht der Kohlenstoffpools der verschiedenen Kompartimente aufrecht zu erhalten und die Energieversorgung aller Teile der Zelle für anabolische Reaktionen sicher zu stellen. Ich wen
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Freiesleben, Konstanze. "Biosynthese der Luteolin-Glucuronide im Roggenprimärblatt-Mesophyll: Charakterisierung der Glucuronosyltransferasen." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971655162.

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Lin, Quan. "Differentiation of tracheary elements from mesophyll cells of Zinnia elegens L." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358693.

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Gillham, Malcolm C. "Biosysmetric studies on some mesophyll-feeding leafhoppers associated with trees and shrubs." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375963.

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Libros sobre el tema "Mesophyll"

1

Morrison, Paul. Paul Morrison: Mésophylle = mesophyll. Magasin, 2003.

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2

Sheard, Jonathan P. Glucose uptake by pea mesophyll protoplasts. University of East Anglia, 1988.

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3

Mateyka, Christian. Reinigung und Charakterisierung kompartimentspezifischer Stärke-Phosphorylasen aus Mesophyll- und Leitbündelscheidenzellen von Maisblättern (Zea mays L.). [s.n.], 1988.

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McCutcheon, Steve L. Amino acid transport: The special case of a H/L-glutamate cotransport system in Asparagus sprengeri mesophyll cells. Dept. of Biological Sciences, Brock University, 1987.

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Hörtensteiner, Stefan. Re-formation of vacuoles in evacuolated tobacco mesophyll protoplasts. 1993.

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Liljebjelke, Karen Anne. Paraveinal mesophyll differentiation and patterns of DNA and RNA synthesis during soybean leaf ontogeny. 1988.

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Mawson, Bruce Thomas. Thermal acclimation of photosynthesis in mesophyll and guard cell chloroplasts of the Arctic plant, "Saxifraga cernua". 1986.

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Rautenkranz, Andreas A. F. Transport of ascorbic and dehydroascorbic acids across membranes of barley (Hordeum vulgare L., cv gerbel) mesophyll cells. 1994.

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Darie, Costel. Studies of the Ndh complex in mesophyll and bundle sheath chloroplasts of Zea mays: An investigation towards its structural and functional characterization. 2002.

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Krakat, Niclas. Molekularbiologische Erfassung Der Bakteriellen Diversitat in Mesophil Und Thermophil Betriebenen Biogasfermentern Mit Korrelation Zu Verfahrenstechnischen Prozessgrossen. Logos Verlag Berlin, 2012.

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Capítulos de libros sobre el tema "Mesophyll"

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Meyer, Y. "Mitotic Cycle of Mesophyll Protoplasts." In Proceedings in Life Sciences. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70144-3_17.

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Meyer, Yves, Yvette Chartier, Jean Grosset, et al. "Gene Expression in Mesophyll Protoplasts." In Morphogenesis in Plants. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4899-1265-7_12.

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Meyer, Y., Y. Chartier, and J. Grosset. "Why do Mesophyll Protoplasts Dedifferentiate?" In Progress in Plant Protoplast Research. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2788-9_47.

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Sugiyama, Munetaka, and Hiroo Fukuda. "Zinnia mesophyll culture system to study xylogenesis." In Plant Tissue Culture Manual. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0303-9_5.

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Wallin, A. "Isolation and Culture of Apple Mesophyll Protoplasts." In Progress in Plant Protoplast Research. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2788-9_35.

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Jover, R., M. C. Brisa, and J. Segura. "Factors Influencing Digitalis Obscura Mesophyll Protoplast Development." In Progress in Plant Protoplast Research. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2788-9_39.

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Sugiyama, Munetaka, and Hiroo Fukuda. "Zinnia mesophyll culture system to study xylogenesis." In Plant Tissue Culture Manual. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-009-0103-2_55.

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Genty, Bernard, Sylvie Meyer, Clément Piel, Franz Badeck, and Rodolphe Liozon. "CO2 Diffusion Inside Leaf Mesophyll of Ligneous Plants." In Photosynthesis: Mechanisms and Effects. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-3953-3_919.

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Uemoto, Kyohei, Takashi Araki, and Motomu Endo. "Isolation of Arabidopsis Palisade and Spongy Mesophyll Cells." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8657-6_9.

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Nyman, Marie, and Anita Wallin. "Plant Regeneration from Strawberry (Fragaria Ananassa) Mesophyll Protoplasts." In Progress in Plant Protoplast Research. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2788-9_34.

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Actas de conferencias sobre el tema "Mesophyll"

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Zvereva, G. K. "The structure of the needles mesophyll in species of the Pinaceae family with flat leaves." In Problems of studying the vegetation cover of Siberia. TSU Press, 2020. http://dx.doi.org/10.17223/978-5-94621-927-3-2020-13.

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The spatial organization of mesophyll and three-dimensional forms of assimilative cells are considered on the example of 7 species of the Pinaceae family with flattened leaves: Abies cephalonica, A. concolor, A. sibirica, Larix sibirica, Picea omorica, Pseudotsuga menziesii and Tsida canadensis. It was shown that three types of mesophyll cells are distinguished in the flattened needles: palisade, spongy and median. Median cells are appreciable both with well-defined and weak differentiation of assimilative tissue; they can have simple and complex cellular forms.
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Zhang, Gaina. "Plant regeneration from mesophyll protoplasts of Radix Gentianae Macrophyllae." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5966163.

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Korpiun, P., and B. Büchner. "Frequency dependence of the photothermal signal on mesophyll cell sizes of leaves." In PHOTOACOUSTIC AND PHOTOTHERMAL PHENOMENA. ASCE, 1999. http://dx.doi.org/10.1063/1.58146.

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Su, Poyu, Ting-Ying Lee, and Szu-Yu Chen. "4D Two-photon Fluorescence Hyperspectral Image of Mesophyll Cells inside Intact Leaves." In Frontiers in Optics. OSA, 2015. http://dx.doi.org/10.1364/fio.2015.jtu4a.85.

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Gataullina, M. O., A. E. Gribanova, D. N. Fedorin, and A. T. Eprintsev. "Features of the functioning of malate dehydrogenase in corn mesophyll under different lighting conditions." In IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future". Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-115.

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Maleva, M. G., O. S. Sinenko, I. S. Kiseleva, D. Latowski, and K. Strzałka. "REACTION OF PHOTOSYNTHETIC APPARATUS TO TEMPERATURE STRESS IN BARLEY MESOPHYLL CELLS OF DIFFERENT AGE." In The All-Russian Scientific Conference with International Participation and Schools of Young Scientists "Mechanisms of resistance of plants and microorganisms to unfavorable environmental". SIPPB SB RAS, 2018. http://dx.doi.org/10.31255/978-5-94797-319-8-496-500.

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Kim, Hyejeong, Kiwoong Kim, and Sang Joon Lee. "Compact and Thermosensitive Micropump Inspired by Plant Leaf." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69148.

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Liquid transportation without employing a bulky power source, often observed in nature, has been an essential prerequisite for smart applications of microfluidic devices. In this report, a leaf-inspired micropump (LIM) which is composed of thermo-responsive stomata inspired membrane (SIM) and mesophyll-inspired agarose cryogel (MAC) is proposed. The LIM provides a durable flow rate of 30 μl/ḣcm2 for more than 30 h at room temperature without external mechanical power source. By adapting a thermo-responsive polymer, the LIM can smartly adjust the delivery rate of a therapeutic liquid in respon
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Cheryatova, Yu S. "Features of the anatomy of the leaves of Laurocerasus officinalis M. Roem." In Растениеводство и луговодство. Тимирязевская сельскохозяйственная академия, 2020. http://dx.doi.org/10.26897/978-5-9675-1762-4-2020-80.

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The article presents the results of microscopic analysis of the leaves of L. officinalis. The main anatomical and diagnostic features that can be used in identifying and evaluating the authenticity of medicinal plant raw materials are established. Analysis of the anatomical structure showed that the leaves of L. officinalis are dorsoventral; the leaf plastic is hypostomatic, and the stomatal apparatus is anomocytic. The main vein of the leaf blade and petiole is represented by a bicollateral conducting bundle. Idioblasts represented by round- shaped essential oil cells were first identified in
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Юдина, П. К., Л. А. Иванова, Д. А. Ронжина, С. В. Мигалина, Ш. Тумуржав, and Л. А. Иванов. "STRUCTURAL AND FUNCTIONAL DIVERSITY OF STEPPE PLANTS OF NORTHERN EURASIA AS A BASIS FOR VEGETATION ANALYSIS UNDER CLIMATE CHANGE." In Сотрудничество ботанических садов в сфере сохранения ценного растительного генофонда. Материалы Международной научной конференции, посвященной 10-летию Совета ботанических садов стран СНГ при МААН. Crossref, 2022. http://dx.doi.org/10.35102/cbg.2022.22.31.065.

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Проведен сравнительный анализ параметров растений, принадлежащих к разным структурно-функциональным типам (СФТР) в степных районах Северной Евразии. Показано, что при изменении климата изменяется соотношение СФТР. С увеличением аридности климата увеличивается доля двудольных травянистых растений с изопалисаднымстроением мезофилла листа и доля С-видов, уменьшается доля растений с дорзовентральной структурой листьев. Таким образом, анализ соотношения СФТР среди степных видов растений может служить индикаторным признаком происходящих климатических изменений. A comparative analysis of the paramete
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Мигалина, С. В., and Л. А. Иванова. "LEAF STRUCTURE AS A GENETIC BASIS FOR THE STABILITY OF WOODY SPECIES IN THE CREATION OF GEOGRAPHIC CROPS." In Сотрудничество ботанических садов в сфере сохранения ценного растительного генофонда. Материалы Международной научной конференции, посвященной 10-летию Совета ботанических садов стран СНГ при МААН. Crossref, 2022. http://dx.doi.org/10.35102/cbg.2022.42.58.039.

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Структурно-функциональные параметры листьев изучены в полусибсовых географических культурах Betula pendula Roth, Betula pubescens Ehrh. и в материнских природных популяциях. Показано, что изменение ключевых параметров структуры листа (размеры и плотность листовой пластинки, размеры клеток мезофилла) вдоль широтного градиента, наблюдаемые в природных популяциях, воспроизводится в модельных популяциях соответствующего происхождения, при этом сохраняются характерные для популяций средние значения листовых параметров. Найденные закономерности свидетельствуют о том, что строение листа генетически д
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Informes sobre el tema "Mesophyll"

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Lu, P., W. H. Jr Outlaw, B. G. Smith, and G. A. Freed. Plant, cell, and molecular mechanisms of abscisic-acid regulation of stomatal apertures. A new mechanism for the regulation of stomatal-aperture size in intact leaves: Accumulation of mesophyll-derived sucrose in the guard-cell wall of Vicia faba L. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/629405.

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Hochman, Ayala, Thomas Nash III, and Pamela Padgett. Physiological and Biochemical Characterization of the Effects of Oxidant Air Pollutants, Ozone and Gas-phase Nitric Acid, on Plants and Lichens for their Use as Early Warning Biomonitors of these Air Pollutants. United States Department of Agriculture, 2011. http://dx.doi.org/10.32747/2011.7697115.bard.

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Introduction. Ozone and related oxidants are regarded as the most important phytotoxic air pollutant in many parts of the western world. A previously unrecognized component of smog, nitric acid, may have even greater deleterious effects on plants either by itself or by augmenting ozone injury. The effects of ozone on plants are well characterized with respect to structural and physiological changes, but very little is known about the biochemical changes in plants and lichens exposed to ozone and/or HNO3. Objectives.To compare and contrast the responses of crop plants and lichens to dry deposit
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Bray, Elizabeth, Zvi Lerner, and Alexander Poljakoff-Mayber. The Role of Phytohormones in the Response of Plants to Salinity Stress. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7613007.bard.

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Salinity is an increasing problem in many irrigated areas of crop production and is a significant factor in reducing crop productivity. Developmental, physiological, and molecular responses to salinity were studied in order to improve our understanding of these responses. Improvements in our understanding of plant responses to salinity are necessary in order to develop crops with improved salt tolerance. Previously, in Israel, it was shown that Sorghum biccolor can adapt to an otherwise lethal concentration of NaCl. These experiments were refined and it was shown that there is a specific windo
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Philosoph-Hadas, Sonia, Richard Crain, Shimon Meir, Nehemia Aharoni, and Susan Lurie. Calcium-Mediated Signal Transduction during Leaf Senescence. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604925.bard.

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We have examined the possibility that modulation of [Ca2+]cyt may represent a signal which induces senescence processes in leaves, through triggering of lipid hydrolysis leading to the cascade of detriorative events. Characterization of the signal transduction components operating during leaf senescence was gained by studying various Ca2+-dependent activities of parsley and chrysanthemum leaves, in relation to several senescence functions, and in response to senescence-modulating hormones (ethylene,ABA, BA and IAA). Some innovative findings regarding the control of senescence processes by [Ca2
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Shahak, Yosepha, and Donald R. Ort. Physiological Bases for Impaired Photosynthetic Performance of Chilling-Sensitive Fruit Trees. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7575278.bard.

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Chilling-sensitivity is an important agricultural problem in both the U.S. and Israel. Most research attention has focused so far on herbaceous crop plants, even though the problem is also acute in the fruit tree industry. Under BARD funding we made substantial progress in identifying the mechanisms involved in the disruption of photosynthesis following a chill in mango. Our investigation with fruit trees has been substantially accelerated by drawing on our knowledge and experience with herbaceous crops. The four original research objectives, focused or discovering the underlying mechanisms of
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Pell, Eva J., Sarah M. Assmann, Amnon Schwartz, and Hava Steinberger. Ozone Altered Stomatal/Guard Cell Function: Whole Plant and Single Cell Analysis. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7573082.bard.

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Original objectives (revisions from original proposal are highlighted) 1. Elucidate the direct effects O3 and H2O2 on guard cell function, utilizing assays of stomatal response in isolated epidermal peels and whole cell gas exchange. 2. Determine the mechanistic basis of O3 and H2O2 effects on the plasma membrane through application of the electrophysiological technique of patch clamping to isolated guard cells. 3. Determine the relative sensitivity of Israeli cultivars of economically important crops to O3 and determine whether differential leaf conductance responses to O3 can explain relativ
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