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Journal articles on the topic 'Bundle sheath'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sanchez, Evangelina, Mirta O. Arriaga, and Roger P. Ellis. "Kranz distinctive cells in the culm of ArundineUa (Arundinelleae; Panicoideae; Poaceae)." Bothalia 20, no. 1 (1990): 45–52. http://dx.doi.org/10.4102/abc.v20i1.943.

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The transectional anatomy of photosynthetic flowering culms of Arundinella berteroniana (Schult.) Hitchc. Chase and A. hispida (Willd.) Kuntze from South America and A. nepalensis Trin. from Africa is described and illustrated. The vascular bundles are arranged in three distinct rings, the outermost being external to a continuous sclerenchymatous band. Each of these peripheral bundles is surrounded by two bundle sheaths, a complete mestome sheath and an incomplete, outer, parenchymatous Kranz sheath, the cells of which contain large, specialized chloroplasts. Kranz bundle sheath extensions are

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2

Martins, Shirley, and Vera Lucia Scatena. "Bundle sheath ontogeny in Kranz and non-Kranz species of Cyperaceae (Poales)." Australian Journal of Botany 59, no. 6 (2011): 554. http://dx.doi.org/10.1071/bt11108.

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Cyperaceae possesses both non-Kranz and Kranz species, with four subtypes that differ in the number and continuity of the bundle sheaths and by presence of chloroplasts. The ontogeny of the bundle sheaths of leaves and scapes of Cyperaceae species was studied to determine primary homologies and standardise the terminology used for its description. Two non-Kranz species and 11 Kranz species from different subtypes were studied. The non-Kranz species have two bundle sheaths, with the outer one originating from the ground meristem (endodermis) and the inner one from the procambium (pericycle). Kr

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3

Zhu, Jiawei, Jing Li, Chuangui Wang, and Hankun Wang. "Anatomy of the Windmill Palm (Trachycarpus fortunei) and Its Application Potential." Forests 10, no. 12 (2019): 1130. http://dx.doi.org/10.3390/f10121130.

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The windmill palm (Trachycarpus fortunei (Hook.) H. Wendl.) is widely distributed and is an important potential source of lignocellulosic materials. The lack of knowledge on the anatomy of the windmill palm has led to its inefficient use. In this paper, the diversity in vascular bundle types, shape, surface, and tissue proportions in the leaf sheaths and stems were studied with digital microscopy and scanning electron microscope (SEM). Simultaneously, fiber dimensions, fiber surfaces, cell wall ultrastructure, and micromechanics were studied with atomic force microscopy (AFM) and a nanoindente

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4

Sima, SN, AK Roy, MT Akther, and N. Joarder. "Cross-sectional anatomy of leaf blade and leaf sheath of cogon grass (Imperata cylindrica L.)." Journal of Bio-Science 25 (July 18, 2018): 17–26. http://dx.doi.org/10.3329/jbs.v25i0.37494.

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Histology of leaf blade and sheath of cogon grass (Imperata cylindrica L.) Beauv., indicated typical C4 Kranz anatomy. Cells of adaxial epidermis were smaller and bulliform cells were present on the adaxial epidermis. The shape of bulliform cells was bulbous; 3-7 cells were present in a group and 3-5 folds larger than epidermal cells. Three types of vascular bundles in respect of size and structure were extra large, large and small and they were part of leaf blade histology. These three sizes of vascular bundles were arranged in successive manner from midrib to leaf margin. Leaf sheath bundles

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5

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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6

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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7

Langdale, J. A., and C. A. Kidner. "bundle sheath defective, a mutation that disrupts cellular differentiation in maize leaves." Development 120, no. 3 (1994): 673–81. http://dx.doi.org/10.1242/dev.120.3.673.

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Post-primordial differentiation events in developing maize leaves produce two photosynthetic cell types (bundle sheath and mesophyll) that are morphologically and biochemically distinct. We have isolated a mutation that disrupts the differentiation of one of these cell types in light-grown leaves. bundle sheath defective 1-mutable 1 (bsd1-m1) is an unstable allele that was induced by transposon mutagenesis. In the bundle sheath cells of bsd1-m1 leaves, chloroplasts differentiate aberrantly and C4 photosynthetic enzymes are absent. The development of mesophyll cells is unaffected. In dark-grown

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8

Liu, Youqi, and Nancy G. Dengler. "Bundle sheath and mesophyll cell differentiation in the C4 dicotyledon Atriplex rosea: quantitative ultrastructure." Canadian Journal of Botany 72, no. 5 (1994): 644–57. http://dx.doi.org/10.1139/b94-085.

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In leaves of most C4 species, both bundle sheath and mesophyll cells are derived from ground meristem, yet at maturity differ in photosynthetic enzyme complement and in cell size, shape, and subcellular ultrastructure. This quantitative ultrastructural study of bundle sheath and mesophyll cell differentiation in Atriplex rosea shows that while developmental pathways of bundle sheath and meosphyll cells are generally coordinated, the timing of developmental divergence differs among individual characteristics. For instance, bundle sheath cells are larger, with more chloroplasts and more and larg

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9

Lee, Kyuhwan, Diane Wowk, and Paul Chan. "FINITE ELEMENT ANALYSIS OF AN EMPTY 37-ELEMENT CANDU^® FUEL BUNDLE TO STUDY THE EFFECTS OF PRESSURE TUBE CREEP." CNL Nuclear Review 10, no. 1 (2021): 39–51. http://dx.doi.org/10.12943/cnr.2020.00003.

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CANDU fuel bundles experience plastic deformations over time, and the horizontal configuration of the bundle in a crept pressure tube (PT) causes coolant to bypass the sagged lower half of the bundle. Bundle segments where the flow is limited may become more susceptible to dryout due to reactor aging. A finite element model of a 37-element fuel bundle was constructed using the commercial finite element software ANSYS to study the mechanical deformation behaviour of the bundle to maintain a coolable geometry. The main focus was on the contact between the fuel elements and between the fuel eleme

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10

Xiong, Haiyan, Lei Hua, Ivan Reyna-Llorens, et al. "Photosynthesis-independent production of reactive oxygen species in the rice bundle sheath during high light is mediated by NADPH oxidase." Proceedings of the National Academy of Sciences 118, no. 25 (2021): e2022702118. http://dx.doi.org/10.1073/pnas.2022702118.

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When exposed to high light, plants produce reactive oxygen species (ROS). In Arabidopsis thaliana, local stress such as excess heat or light initiates a systemic ROS wave in phloem and xylem cells dependent on NADPH oxidase/respiratory burst oxidase homolog (RBOH) proteins. In the case of excess light, although the initial local accumulation of ROS preferentially takes place in bundle-sheath strands, little is known about how this response takes place. Using rice and the ROS probes diaminobenzidine and 2′,7′-dichlorodihydrofluorescein diacetate, we found that, after exposure to high light, ROS

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11

N.Kh., Aliyeva, Gasimova K.H., and Suleymanov S.Y. "Polypeptide Pattern of Mesophyll and Bundle Sheath Thylakoids of Maize Chloroplasts." Journal of Life Sciences and Biomedicine 73, no. 2 (2018): 53–57. https://doi.org/10.5281/zenodo.7401435.

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The energy converting apparatus of the photosynthesizing oxygenic species organized in several different multisubunit protein complexes is associated with thylakoid membranes. A characteristic feature of C4 plants is the differentiation of the photosynthetic leaf tissues into two distinct cell types, mesophyll (M) and bundle sheath (BS) cells. In this study, polypeptide patterns of mesophyll and bundle sheath thylakoids of maize (Zea mays L.) have been analyzed. The amount of the PSI core apoprotein (68 kDa) was found to be higher in bundle sheath compared with mesophyll thylakoids. α an

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12

Shang, Lili, Xing'e Liu, Zehui Jiang, Genlin Tian, and Shumin Yang. "Variation in Tensile Properties of Single Vascular Bundles in Moso Bamboo." Forest Products Journal 71, no. 3 (2021): 246–51. http://dx.doi.org/10.13073/fpj-d-21-00002.

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Abstract Moso bamboo (Phyllostachys edulis), an apt example of an anisotropic, functionally graded composite material, is the most important commercial bamboo species of China. This species has excellent mechanical properties due to its unique vascular bundle structure. This article examines the variation in mechanical properties of single vascular bundles with respect to their location within a bamboo culm. The mechanical exfoliation method was used to prepare the single vascular bundle. This study found that moso bamboo has superior stiffness and strength. Additionally, the variation in prop

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13

Paiva, Elder A. S., and Sílvia R. Machado. "Collenchyma in Panicum maximum (Poaceae): localisation and possible role." Australian Journal of Botany 51, no. 1 (2003): 69. http://dx.doi.org/10.1071/bt02046.

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This work relates the occurrence and distribution of collenchyma in Panicum maximum Jacq. P.�maximum leaves were collected at different phases of development and sampled from both the base of the sheath and from the sheath–leaf blade transition area. For the stems, the study was made by using hand-cut sections of the internodal base. In the leaves, analyses of serial sections showed, at the base and sheath–leaf blade transition area, a sudden change of tissue at vascular bundle. The vascular bundles are surrounded by sclerenchyma, both in the sheath and the leaf blade, as well as by fibrous th

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14

Scataglini, Maria Amalia, Sandra Aliscioni, and Fernando Omar Zuloaga. "On the taxonomic position of Panicum scabridum (Poaceae, Panicoideae, Paspaleae)." Phytotaxa 163, no. 1 (2014): 1. http://dx.doi.org/10.11646/phytotaxa.163.1.1.

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Panicum scabridum, an incertae sedis species of Panicum s.l., is here included in the genus Coleataenia, following a phylogenetic analysis based on one new ndhF sequence of the species and associated morphological data. Panicum scabridum and species of Coleataenia are cespitose and perennial plants, with a lower glume (1–)3–5-nerved, 1/3 to 3/4 of the spikelet, upper glume and lower lemma 5–9-nerved, and upper anthecium smooth, shiny, and indurate. Within Coleataenia, P. scabridum appeared as the sister taxon of the species pair C. prionitis and C. petersonii; these three species are the only

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15

Kinsman, E. A., and K. A. Pyke. "Bundle sheath cells and cell-specific plastid development in Arabidopsis leaves." Development 125, no. 10 (1998): 1815–22. http://dx.doi.org/10.1242/dev.125.10.1815.

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Bundle sheath cells form a sheath around the entire vascular tissue in Arabidopsis leaves and constitute a distinct leaf cell type, as defined by their elongate morphology, their position adjacent to the vein and by differences in their chloroplast development compared to mesophyll cells. They constitute about 15% of chloroplast-containing cells in the leaf. In order to identify genes which play a role in the differential development of bundle sheath and mesophyll cell chloroplasts, a screen of reticulate leaf mutants of Arabidopsis was used to identify a new class of mutants termed dov (diffe

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16

Md., Mahabubur Rahman, and Sharmin Sultana Rubaiyat. "Anatomy on Leaf Blade of Eleusine indica L. (Gramineae): A Study on Kranz Grass." EBAUB Journal 3 (January 1, 2021): 1–8. https://doi.org/10.5281/zenodo.6508018.

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The anatomical features of <em>Eleusine indica</em> L. belonging to Gramineae family were investigated in the present study which was conducted in the laboratory of Crop Botany, EXIM Bank Agricultural University Bangladesh, Chapainawabganj. The leaf blades of field grown healthy plants were studied. Leaf blade surface was examined around stained peeling. Anatomical features were observed in transverse sections stained with 1% aqueous solution of safranin under a light microscope. Different types of cells diagram were measured from the photographs. Stomata were present in both abaxial and adxia

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17

Romanowska, Elzbieta, and Anna Drozak. "Comparative analysis of biochemical properties of mesophyll and bundle sheath chloroplasts from various subtypes of C4 plants grown at moderate irradiance." Acta Biochimica Polonica 53, no. 4 (2006): 709–19. http://dx.doi.org/10.18388/abp.2006_3298.

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The photochemical characteristics of mesophyll and bundle sheath chloroplasts isolated from the leaves of C4 species were investigated in Zea mays (NADP-ME type), Panicum miliaceum (NAD-ME type) and Panicum maximum (PEP-CK type) plants. The aim of this work was to gain information about selected photochemical properties of mesophyll and bundle sheath chloroplasts isolated from C4 plants grown in the same moderate light conditions. Enzymatic as well as mechanical methods were applied for the isolation of bundle sheath chloroplasts. In the case of Z. mays and P. maximum the enzymatic isolation r

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18

Voznesenskaya, Elena V., Simon D. X. Chuong, Nuria K. Koteyeva, Gerald E. Edwards, and Vincent R. Franceschi. "Functional compartmentation of C4 photosynthesis in the triple layered chlorenchyma of Aristida (Poaceae)." Functional Plant Biology 32, no. 1 (2005): 67. http://dx.doi.org/10.1071/fp04118.

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The genus Aristida (Poaceae), is composed of species that have Kranz anatomy and C4 photosynthesis. Kranz anatomy typically consists of two photosynthetic cell types: a layer of mesophyll cells where atmospheric CO2 is fixed into C4 acids, and an internal, chlorenchymatous vascular bundle sheath to which C4 acids are transferred and then decarboxylated to donate CO2 to the C3 cycle. The anatomy of Aristida species is unusual as it has three distinct layers of chlorenchyma cells surrounding the vascular tissue: an inner bundle sheath, an outer bundle sheath and the mesophyll cells. In this stud

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19

Santika, Yessi, Eka Fatmawati Tihurua, and Teguh Triono. "COMPARATIVE LEAVES ANATOMY OF PANDANUS, FREYCINETIA AND SARARANGA (PANDANACEAE) AND THEIR DIAGNOSTIC VALUE." REINWARDTIA 14, no. 1 (2014): 163. http://dx.doi.org/10.14203/reinwardtia.v14i1.412.

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Study in leaves anatomy of twenty nine samples of the species classified under Pandanus, Freycinetia and Sararanga of Pandanaceae had been undertaken to unravel generic relationship among of these taxa with a view to provide a set of diagnostic characters for taxonomic identification. The fourth genus of Pandanaceae, Benstonea is not included in this analysis since there are no representative samples. Four anatomical diagnostic characters had been identified at the generic level such as present and absent of papillae, stomatal arrangement types, present and absent of bundle sheath extension an

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20

Sima, SN, AK Roy, and N. Joarder. "Erect culm internodal anatomy and properties of sun ecotype of Imperata cylindrica (L.) P. Beauv." Bangladesh Journal of Botany 44, no. 1 (2015): 67–72. http://dx.doi.org/10.3329/bjb.v44i1.22725.

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Internodal anatomy of Imperata cylindrica (L.) P. Beauv. was described in this paper. Culm internodes were completely encircled by leaf sheath. Peripheral vascular bundles were many in number and small in size. Central bundles were large in size and a few in number. Large bundles were of various sizes and vascular tissues well developed. Each vascular bundle had strong mass of sclerenchyma tissue arching over the phloem in the form of phloem hood. Small bundles were poorly developed in respect of vascular tissue. A small percentage of vascular bundle consisted of phloem tissue only fundamental

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Md., Mahabubur Rahman, Shermin Khatun Mst., Shahriar Ahmed Sonet Md., Kaniz Fatema Mst., Siddika Ayesha, and Sharmin Sultana Rubaiyat. "NADP-ME Subtype C4 Grass Saccharum spontaneum L.: An Anatomical Study." EBAUB Journal 4 (January 1, 2022): 1–8. https://doi.org/10.5281/zenodo.6492990.

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Leaf blade of <em>Saccharum spontaneum</em> L. was scrutinized microscopically in the present study. Surface features and internal structures in leaf blades from plants grown in natural terrain were examined in peelings and transverse sections after staining with 1% aqueous solution of safranin. Different types of cell diagram were measured from the photographs. In both abaxial and adxial surfaces of the leaf blade, stomata, cork cells, micro hairs, long and short cells with sinuous wall were recognized. Epidermal cells (15.13µm) were found compactly arranged with oval shaped cells. Meso

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22

MARTINS, SHIRLEY, and VERA L. SCATENA. "Developmental anatomy of Cyperus laxus (non-Nranz) and Fimbristylis dichotoma (Kranz) (Cyperaceae, Poales) and tissue continuity." Anais da Academia Brasileira de Ciências 85, no. 2 (2013): 605–14. http://dx.doi.org/10.1590/s0001-37652013005000032.

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The Cyperaceae species are present in different ecosystems and constitute the herbaceous extract. Of the approximately 5,500 species of the family; a third has Kranz anatomy, representing an important characteristic of the taxonomy and phylogeny of the group. In Cyperus laxus L. (non-Kranz) and Fimbristylis dichotoma Vahl (Kranz), development begins with germination that is marked by the emergence of the coleoptiles, followed by the primary root, which is ephemeral. The rhizome originates from the mesocotyl and it promotes the vascular connection between the roots, leaves and scapes. The conti

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23

Dengler, Nancy G., Ronald E. Dengler, and Douglas J. Grenville. "Comparison of photosynthetic carbon reduction (Kranz) cells having different ontogenetic origins in the C4 NADP – malic enzyme grass Arundinella hirta." Canadian Journal of Botany 68, no. 6 (1990): 1222–32. http://dx.doi.org/10.1139/b90-154.

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The C4 grass Arundinella hirta is characterized by unusual leaf blade anatomy: photosynthetic carbon reduction takes place both within the chlorenchymatous bundle sheath cells of the longitudinal veins and within longitudinal strands of "distinctive cells" that form part of the leaf mesophyll and are often completely isolated from vascular tissue. Although they are equivalent physiologically, these two cell types have different ontogenetic origins: bundle sheath cells are delimited from procambium early in leaf development, whereas distinctive cells differentiate from ground meristem at a late

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24

Carelli, Maria Luiza Carvalho, Rachel Benetti Queiroz-Voltan, Joel Irineu Fahl, and Paulo César Ocheuze Trivelin. "Leaf anatomy and carbon isotope composition in Coffea species related to photosynthetic pathway." Brazilian Journal of Plant Physiology 15, no. 1 (2003): 19–24. http://dx.doi.org/10.1590/s1677-04202003000100003.

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Possible presence of vascular bundle sheath cells and its relation to photosynthetic pathway, leaf anatomy and carbon isotope composition (delta13C) were examined in six species of genus Coffea: C. arabica (cvs. Catuaí Vermelho, Mundo Novo, Bourbon Vermelho and Icatu Amarelo), C. canephora (cvs. Apoatã and Guarini), C. liberica, C. dewevrei, C. salvatrix and C. stenophylla. In all genotypes, the vascular bundle was surrounded by a layer of cells with numerous chloroplasts in a centrifugal position. Visually no differences could be seen between the spongy parenchyma cells and the bundle sheath

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25

Guan, Xin, Haining Yin, Bowen Chen, Yan Zhu, Xueshen Liu, and Jinguo Lin. "The effect of microstructure on mechanical properties of Phyllostachys pubescens." BioResources 15, no. 1 (2020): 1430–44. http://dx.doi.org/10.15376/biores.15.1.1430-1444.

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To reveal the effects of vascular bundle and sheath-node tissues on mechanical strength, moso bamboo (Phyllostachys pubescens) was investigated via compression, bending, and tension tests. Quantitative analysis was applied on vascular bundle and sheath-node tissues using a mosaicking technique and Image-Pro Plus 6.0 software. Based on the analysis of internode and node specimens, it was found that 1) there was a significant difference between the tissues proportion and mechanical strength. A high tissues proportion resulted in a high compression strength, tension strength, and modulus of ruptu

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Nambudiri, EMV, and William D. Tidwell. "Palmoxylon hebbertii, from the Lower Oligocene Goldens Ranch Formation of central Utah, U.S.A., with an analysis of some characteristics previously used in the classification of Palmoxylon." Canadian Journal of Botany 76, no. 3 (1998): 517–29. http://dx.doi.org/10.1139/b98-014.

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The new species, Palmoxylon hebbertii, described here was collected from the Lower Oligocene Goldens Ranch Formation southwest of Nephi, Utah, U.S.A. In cross section, the collateral vascular bundles are generally reniform in shape with a well-developed fibrous bundle sheath and a median sinus that is very shallow or absent. They are bivascular and, in the subdermal zone, surrounded by radiating parenchyma. The phloem is well differentiated into protophloem and metaphloem elements with oblique sieve plates. The metaxylem and protoxylem vessel elements show a gradual change in the morphology of

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27

Bredenkamp, C. L., and A. E. Van Wyk. "Leaf anatomy of the genus Passerina (Thymelaeaceae): taxonomic and ecological significance." Bothalia 31, no. 1 (2001): 53–70. http://dx.doi.org/10.4102/abc.v31i1.507.

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A comparative anatomical study was made of the genus Passerina comprising 20 species and four subspecies, most of which are endemic to southern Africa. It showed that anatomical variation is useful in species recognition and classification. Anatomical characters typical of Thymelaeaceae and displayed in Passerina include isobilateral leaves, a papillate cuticular membrane, mucilaginous epidermal cell walls, a parenchymatous bundle sheath and extraxylary sclerenchyma fibres. Vascular bundles of the leaf lack intraxylary phloem. Characters common to Passerina are inverse-dorsiventral and epis- t

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Boag, S., A. Agostino, RT Furbank, and MD Hatch. "Effects of External Mg2+ and Ph on the Photosynthetic Activities and Stromal pH of Intact Chloroplasts Isolated From C4 Plants." Functional Plant Biology 16, no. 5 (1989): 379. http://dx.doi.org/10.1071/pp9890379.

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Exogenous Mg2+ inhibited PGA- and OAA-dependent photosynthetic O2 evolution by isolated mesophyll chloroplasts from Zea mays and also HCO3--dependent O2 evolution by chloroplasts from Panicum miliaceum bundle sheath cells. Inhibition of 50-75% was observed with 3-5 mM Mg2+; this varied to some extent with pH but was not reversed by K+ . Inhibition of HCO3-- and PGA-dependent O2 evolution by the divalent cation ionophore A23187 was reversed by adding Mg2+ . Notably, HCO3-- dependent O2 evolution by isolated bundle sheath cells from P. miliaceum was not inhibited by [Mg2+] up to 20 mM. Addition

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Sailaja, MV, and VSR Das. "Modulation of the Cytochrome b6/f Complex and Photosystem I Under Growth-Limiting Light in Amaranthus hypochondriacus, an NAD-ME C4 Plant." Functional Plant Biology 23, no. 3 (1996): 305. http://dx.doi.org/10.1071/pp9960305.

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Highly characteristic responses of thylakoid membranes were observed in function and composition when fully developed plants of Amaranthus hypochondriacus L. grown under light sufficient (2000 μmol m-2 s-1) conditions were transferred to light limited conditions (650 μmol m-2 s-1 and 200 μmol m-2 s-1). The whole-chain, photosystem I and photosystem II electron transport rates were depressed in both bundle sheath and mesophyll thylakoids with remarkable differences between them in variation of rates under limiting light. The reduction in PSI electron transport in the mesophyll could be attribut

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30

Cui, Xin, Huifang Cen, Cong Guan, Danyang Tian, Huayue Liu, and Yunwei Zhang. "Photosynthesis capacity diversified by leaf structural and physiological regulation between upland and lowland switchgrass in different growth stages." Functional Plant Biology 47, no. 1 (2020): 38. http://dx.doi.org/10.1071/fp19086.

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Understanding and enhancing switchgrass (Panicum virgatum L.) photosynthesis will help to improve yield and quality for bio-industrial applications on cellulosic biofuel production. In the present study, leaf anatomical traits and physiological characteristics related to photosynthetic capacity of both lowland and upland switchgrass were recorded from four varieties across the vegetative, elongation and reproductive growth stages. Compared with the upland varieties, the lowland switchgrass showed 37–59, 22–64 and 27–73% higher performance on height, stem and leaf over all three growth stages.

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Arora, Sunita, and Manju Saini. "ANATOMICAL STUDIES ON CORBICHONIA DECUMBENS (FORSSK.) EXELL, AN IMPORTANT MEDICINAL HERB FROM RAJASTHAN." Journal of Drug Delivery and Therapeutics 8, no. 5-s (2018): 228–31. http://dx.doi.org/10.22270/jddt.v8i5-s.1963.

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Corbichonia decumbens (Forssk.) Exell, commonly known as pater-chatti, is an annual or short lived perennial herb found in rocky habitats. It is used to cure kidney stone and gonorrhoea. The main objective of this study was to examine the anatomical characters of whole plant of C. decumbens for identification. The transverse sections of root, stem, leaf and flower have been examined and analysed. Photomicrographs were prepared with Sony HD (1920x1080/50i) digital camera. The microscopical studies revealed several interesting features viz., the presence of anomocytic stomata on both the surface

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Yamaji, Naoki, Gen Sakurai, Namiki Mitani-Ueno, and Jian Feng Ma. "Orchestration of three transporters and distinct vascular structures in node for intervascular transfer of silicon in rice." Proceedings of the National Academy of Sciences 112, no. 36 (2015): 11401–6. http://dx.doi.org/10.1073/pnas.1508987112.

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Requirement of mineral elements in different plant tissues is not often consistent with their transpiration rate; therefore, plants have developed systems for preferential distribution of mineral elements to the developing tissues with low transpiration. Here we took silicon (Si) as an example and revealed an efficient system for preferential distribution of Si in the node of rice (Oryza sativa). Rice is able to accumulate more than 10% Si of the dry weight in the husk, which is required for protecting the grains from water loss and pathogen infection. However, it has been unknown for a long t

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Cribb, Lizzie, Lisa N. Hall, and Jane A. Langdale. "Four Mutant Alleles Elucidate the Role of the G2 Protein in the Development of C4 and C3 Photosynthesizing Maize Tissues." Genetics 159, no. 2 (2001): 787–97. http://dx.doi.org/10.1093/genetics/159.2.787.

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Abstract Maize leaf blades differentiate dimorphic photosynthetic cell types, the bundle sheath and mesophyll, between which the reactions of C4 photosynthesis are partitioned. Leaf-like organs of maize such as husk leaves, however, develop a C3 pattern of differentiation whereby ribulose bisphosphate carboxylase (RuBPCase) accumulates in all photosynthetic cell types. The Golden2 (G2) gene has previously been shown to play a role in bundle sheath cell differentiation in C4 leaf blades and to play a less well-defined role in C3 maize tissues. To further analyze G2 gene function in maize, four

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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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Amada, Shigeyasu. "Hierarchical Functionally Gradient Structures of Bamboo, Barley, and Corn." MRS Bulletin 20, no. 1 (1995): 35–36. http://dx.doi.org/10.1557/s0883769400048909.

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Bamboo and certain other plants have excellent characteristics based on functionally gradient structures. Figure 1 shows a cross section of bamboo, corn, and barley culms. The collection of solid dots in bamboo is called the bundle sheath, which acts as fibers for the plant. These bundle sheaths are shown in the magnified photograph of corn and barley. These two plants are made of composite materials reinforced by fibers of the bundle sheath; the fiber strength is about 10 times that of the matrix. Furthermore, the fiber distribution is dense in the outer region and sparse in the inner region.

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Singh, Pallavi, and Gregory Reeves. "Constructing the bundle sheath towards enhanced photosynthesis." Journal of Experimental Botany 71, no. 4 (2020): 1206–9. http://dx.doi.org/10.1093/jxb/erz537.

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This article comments on: van Rooijen R, Schulze S, Petzsch P, Westhoff P. 2020. Targeted misexpression of NAC052, acting in H3K4 demethylation, alters leaf morphological and anatomical traits in Arabidopsis thaliana. Journal of Experimental Botany 71, 1434–1448.

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Kuo, John, and Joan G. Stewart. "Leaf anatomy and ultrastructure of the North American marine angiosperm Phyllospadix (Zosteraceae)." Canadian Journal of Botany 73, no. 6 (1995): 827–42. http://dx.doi.org/10.1139/b95-091.

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The leaf anatomy and ultrastructure of the North American Phyllospadix species P. serrulatus Rupt. ex Aschers., P. scouleri Hook, and P. torreyi Watson are described. The unique anatomical and ultrastructural features of these species are compared with those of other seagrasses and their possible functional significance is discussed. All three species have ultrastructures similar to those in other members of the family Zosteracae. Subcuticular cavities, wall ingrowths, and numerous mitochondria and chloroplasts with well-developed grana are present in the blade epidermal cells and the adaxial

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BOZDAĞ, Bahattin. "An Anatomical and Caryological Investigation On Monotypic Pallenis spinosa (L.) Cass. in Turkey." Afyon Kocatepe University Journal of Sciences and Engineering 23, no. 4 (2023): 820–27. http://dx.doi.org/10.35414/akufemubid.1269577.

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Pallenis spinosa (L.) Cass., which has an annual and herbacous life form, is represented by a single species (monotypic) in Turkey. There are 1-2 rows of epidermis cells in the root cross section of the taxon. Between the epidermis and the central cylinder is the cortex, which consists of parenchymatic cells. Root has a radial vasculer bundle. The cross-section of the stem has a round shape with single row and regular lined of cortex cell over the vascular bundle as a starch sheath. The sclerenchyma cells is cover the top of floem cells in the collateral vascular bundle. The leaves is a bifaci

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Johnson, Jennifer E., Christopher B. Field, and Joseph A. Berry. "The limiting factors and regulatory processes that control the environmental responses of C3, C3–C4 intermediate, and C4 photosynthesis." Oecologia 197, no. 4 (2021): 841–66. http://dx.doi.org/10.1007/s00442-021-05062-y.

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AbstractHere, we describe a model of C3, C3–C4 intermediate, and C4 photosynthesis that is designed to facilitate quantitative analysis of physiological measurements. The model relates the factors limiting electron transport and carbon metabolism, the regulatory processes that coordinate these metabolic domains, and the responses to light, carbon dioxide, and temperature. It has three unique features. First, mechanistic expressions describe how the cytochrome b6f complex controls electron transport in mesophyll and bundle sheath chloroplasts. Second, the coupling between the mesophyll and bund

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Agostino, A., HW Heldt, and MD Hatch. "Mitochondrial Respiration in Relation to Photosynthetic C4 Acid Decarboxylation in C4 Species." Functional Plant Biology 23, no. 1 (1996): 1. http://dx.doi.org/10.1071/pp9960001.

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Certain respiratory features of bundle sheath cells isolated from the C4 species Urochloa panicoides (phosphoenolpyruvate carboxykinase (PCK)-type)), Panicum miliaceum (NAD malic enzyme (NAD-ME)-type) and Zea mays (NADP malic enzyme (NADP-ME)-type) were examined in relation to the requirements of the C4 acid decarboxylation step of C4 photosynthesis. Cells from both PCK-type and NAD-ME-type species showed high rates of malate-dependent respiration; with ADP or uncoupler the rates were in the range 2-3 μatom O min-1 mg-1 chlorophyll, about 5-10-times the rates with other respiratory substrates.

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Ray, M. Madeleine, Gar W. Rothwell, and Ruth A. Stockey. "Anatomically Preserved Early Cretaceous Bennettitalean Leaves: Nilssoniopteris corrugata n. sp. from Vancouver Island, Canada." Journal of Paleontology 88, no. 5 (2014): 1085–93. http://dx.doi.org/10.1017/s002233600005767x.

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Early Cretaceous fossilized leaves assignable to the extinct seed plant order Bennettitales occur within an exceptionally diverse Early Cretaceous (Valanginian) flora of anatomically preserved plant fossils at Apple Bay on Vancouver Island, British Columbia, Canada. One of the bennettitalean leaf types has an entire margin, with laminae that are attached near the adaxial surface of the midvein. Leaves are 10–15 mm wide with an adaxial surface that shows distinct corrugations, and a midrib that is exposed adaxially. The vascular system of the midrib consists of a crescent-shaped ring of collate

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SILVA, MARCOS JOSÉ DA, and IGOR SOARES DOS SANTOS. "Erythroxylum confertifolium, a new species from Chapada dos Veadeiros National Park, Goiás, Brazil, unveiled by morphology and leaf anatomy." Phytotaxa 600, no. 2 (2023): 55–72. http://dx.doi.org/10.11646/phytotaxa.600.2.1.

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Erythroxylum confertifolium, a new species from the Chapada dos Veadeiros National Park, Goiás, Brazil, is described and illustrate here. It differs from E. campestre and E. parvistipulatum, its most similar congeners, by a set of morphological (e.g. branching appearance of the stem, leaf shape and consistency, numbers of setules of stipules and cataphylls, aspect of the pedicel, size of flower parts and fruits, and aspect of auricles of petals and styles), and leaf anatomical characters (e.g. number of main and accessory vascular bundles and their appearance on the petiole and midrib, aspect

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Bosabalidis, A. "Idioblastic mucilage cells in Teucrium polium leaf. Anatomy and histochemistry." Modern Phytomorphology 5 (April 1, 2014): 49–52. https://doi.org/10.5281/zenodo.161003.

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In the mesophyll of Teucrium polium L. leaves, isolated or grouped idioblastic secretory cells occur in contact with the distal (adaxial) vessel elements of the vascular bundles. They appear to originate from one or more bundle sheath cells and their intracellular space is entirely occupied by the secretory material. The latter has a glycoproteinaceous constitution (mucilage), as histochemical tests showed. Idioblastic cells, therefore, correspond to typical mucilage cells. Mucilage seems to play a crucial role in the adaptation of the plant to unfavourable environmental conditions.

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Lynch, D. J., F. A. McInerney, L. L. R. Kouwenberg, and M. A. Gonzalez-Meler. "Plasticity in bundle sheath extensions of heterobaric leaves." American Journal of Botany 99, no. 7 (2012): 1197–206. http://dx.doi.org/10.3732/ajb.1100525.

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Valle, Estela M., and Hans W. Heldt. "Alanine Synthesis by Bundle Sheath Cells of Maize." Plant Physiology 95, no. 3 (1991): 839–45. http://dx.doi.org/10.1104/pp.95.3.839.

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Roth, Ronelle, Lisa N. Hall, Thomas P. Brutnell, and Jane A. Langdale. "bundle sheath defective2, a Mutation That Disrupts the Coordinated Development of Bundle Sheath and Mesophyll Cells in the Maize Leaf." Plant Cell 8, no. 5 (1996): 915. http://dx.doi.org/10.2307/3870292.

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Hudson, GS, RE Dengler, PW Hattersley, and G. Dengler. "Cell-Specific Expression of Rubisco Small Subunit and Rubisco Activase Genes in C3 and C4 Species of Atriplex." Functional Plant Biology 19, no. 1 (1992): 89. http://dx.doi.org/10.1071/pp9920089.

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In situ hybridisation techniques have been used to determine the distribution of mRNAs for ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco: EC 4.1.1.39) and Rubisco activase in leaves of Atriplex patula L. (C3) and A. rosea L. (C4). In A. patula, mRNA for Rubisco small subunit (encoded by the rbcS gene family) was found to accumulate in the mesophyll and bundle sheath, while in A. rosea it accumulated in the bundle sheath only, as shown previously for the C4 monocot Zea mays L. The spatial distribution of rca transcripts for Rubisco activase paralleled that for the rbcS transcripts in

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Borghi, Gian Luca, Stéphanie Arrivault, Manuela Günther, et al. "Metabolic profiles in C3, C3–C4 intermediate, C4-like, and C4 species in the genus Flaveria." Journal of Experimental Botany 73, no. 5 (2021): 1581–601. http://dx.doi.org/10.1093/jxb/erab540.

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Abstract C4 photosynthesis concentrates CO2 around Rubisco in the bundle sheath, favouring carboxylation over oxygenation and decreasing photorespiration. This complex trait evolved independently in &gt;60 angiosperm lineages. Its evolution can be investigated in genera such as Flaveria (Asteraceae) that contain species representing intermediate stages between C3 and C4 photosynthesis. Previous studies have indicated that the first major change in metabolism probably involved relocation of glycine decarboxylase and photorespiratory CO2 release to the bundle sheath and establishment of inte

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Elfman, Beverly, M. A. Maun, and W. G. Hopkins. "Population biology of Ammophila breviligulata and Calamovilfa longifolia on Lake Huron sand dunes. II. Ultrastructure of organelles and photosynthetic properties." Canadian Journal of Botany 64, no. 9 (1986): 2151–59. http://dx.doi.org/10.1139/b86-284.

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Organellar ultrastructure and photosynthetic properties of two grasses, Calamovilfa longifolia (Hook) Scribn. and Ammophila breviligulata Fern., growing on Lake Huron sand dunes were compared. Thylakoids of C. longifolia contained a relatively greater complement of the photosystem I (PSI) – chlorophyll a – protein complex, whereas thylakoids from A. breviligulata had a relatively greater complement of light-harvesting chlorophyll a + b complex. The chlorophyll a/b ratios of the mesophyll chloroplast thykaloids reflected the content of chlorophyll–protein complexes present in the membranes. Dig

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Rajput, Kishore Shankarsinh, and Vidya Shivram Patil. "Structure and development of cortical bundles in Couroupita guianensis Aubl. (Lecythidaceae)." Anales de Biología, no. 38 (June 27, 2016): 95–102. http://dx.doi.org/10.6018/analesbio.38.10.

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El desarrollo de haces corticales, en ramas y pedúnculos de Couroupita guianensis (Lecythidaceae), comienza cerca del meristemo apical concomitante con los haces vasculares normales. Cada haz cortical llega a estar rodeado por una vaina de fibras que, a menudo, mostraba la presencia de una capa gelatinosa (fibras G). A medida que avanza el crecimiento, cada haz se puede dividir en dos o tres haces. Algunos de los haces son mayores y muestran elementos vasculares bien diferenciados debido a su asociación con frutos en desarrollo, mientras que los más pequeños, con pocos vasos, pueden ser trazas

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