scholarly journals The tissue structure of the vegetative organs of strawberry (Fragaria moschata Duch®)

2000 ◽  
Vol 6 (1) ◽  
Author(s):  
J. Papp ◽  
I. Lenkefi ◽  
M. Gara ◽  
P. Gracza
Keyword(s):  
Tissue Structure ◽  
Vascular Bundles ◽  
Root Structure ◽  
Lower Epidermis ◽  
Palisade Parenchyma ◽  
Vegetative Organs ◽  
Ring Shape ◽  
Central Bundle ◽  
Upper Third

The tissue structure of the vegetative organs of strawberry (root, rhizome, stolon, leaf) is discussed in this paper. The authors stated that the root structure described by Muromcev (1969) and Naumann-Seip (1989) develops further from the primary structure. It grows secondarily and the transport tissue becomes continuous having ring shape. In the primary cortex of the rhizome periderm like tissue differentiates, but according to the examinations up to now, it does not take over the role of the exodermis. The exodermis is phloboran filled primary cortex tissue with 3-4 cell rows under the rhizodermis. The development of the transport tissue of the petiole is also a new recognition. In the lower third of the petiole the transport tissue consists of 3 collaterally compound vascular bundles. In the middle third there are 5 bundles because of the separation of the central bundle and in the upper third of the petiole 7 bundles can be observed because of the ramification of the outside bundles. Therefore attention must be taken also in the case of other plants at making sections. There might be confusions in the results of the examinations if the number of bundles increases in the petiole. The tissue structure might vary depending on the origin of the tissue segment. The palisade parenchyma of the leaf blade has two layers and it is wider than the spongy parenchyma. Among the 5-6-angular cells of the upper epidermis do not develop stomata while in the lower epidermis there are a fairly lot of them.

HISTOLOGY OF ANOMALOUS GROWTH AND ADVENTITIOUS ROOTS ASSOCIATED WITH MAINSTEM GIRDLING BY THREECORNERED ALFALFA HOPPER, SPISSISTILUS FESTINUS (SAY) (HOMOPTERA: MEMBRACIDAE) ON SOYBEAN1

1988 ◽  
Vol 23 (4) ◽  
pp. 333-341 ◽  
Author(s):  
M. P. Johnson ◽  
A. J. Mueller ◽  
W. M. Harris ◽  
K. S. Kim
Keyword(s):  
Glycine Max ◽  
Adventitious Roots ◽  
Tissue Structure ◽  
Vascular Bundles ◽  
Root Structure ◽  
Secondary Phloem ◽  
Parenchyma Cells ◽  
Glycine Max L ◽  
Spissistilus Festinus ◽  
Anomalous Growth

Cell and tissue structure of undamaged soybean, Glycine max (L.) Merrill, stems were compared with those from the swollen area immediately above (< 1 cm) threecornered alfalfa hopper, Spissistilus festinus (Say), girdles. Examination of epoxy - resin embedded transverse sections from the swollen stems revealed growth that differed significantly from the normal dicot structure. The anomalous growth consisted of vascular bundles scattered in the secondary phloem surrounded by parenchyma cells. Examination of Paraplast® embedded transverse and longitudinal sections of adventitious root - like growths arising from or above the swollen hypocotyl area revealed normal root structure.

scholarly journals Macro and microscopic characters of the aerial vegetative organs of Carqueja: Baccharis usterii Heering

2010 ◽  
Vol 53 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Jane Manfron Budel ◽  
Márcia do Rocio Duarte
Keyword(s):  
Quality Control ◽  
Glandular Trichomes ◽  
Vascular Bundles ◽  
Spongy Parenchyma ◽  
Palisade Parenchyma ◽  
Electron Microscopic ◽  
Vegetative Organs ◽  
Scanning Electron Microscopic ◽  
Scanning Electron ◽  
Secretory Ducts

This work aimed to study the macro and microscopic characters of the aerial vegetative organs of Baccharis usterii for quality control purposes. The plant was prepared for light and scanning electron microscopic analyses. The stem consisted of three-winged cladodes with small leaves. In the caulinar axis, these was a uniseriate epidermis, chlorenchyma alternating with angular collenchyma, perivascular fibre caps adjoining the phloem which was outside the xylem, and parenchymatic pith. The wings and the leaves were alike, presenting a uniseriate epidermis, palisade parenchyma next to the both sides of the epidermis and spongy parenchyma traversed by minor collateral vascular bundles in the central region. In the leaf midrib, a single collateral vascular bundle was embedded in the ground parenchyma. Secretory ducts and glandular trichomes occured in the stem and leaf.

scholarly journals The New Era of Three-Dimensional Histoarchitecture of the Human Endometrium

2021 ◽  
Vol 11 (8) ◽  
pp. 713
Author(s):  
Manako Yamaguchi ◽  
Kosuke Yoshihara ◽  
Nozomi Yachida ◽  
Kazuaki Suda ◽  
Ryo Tamura ◽  
...  
Keyword(s):  
3D Imaging ◽  
Relevant Literature ◽  
3D Structure ◽  
Three Dimensional ◽  
Human Endometrium ◽  
Tissue Structure ◽  
New Era ◽  
Whole Mount ◽  
Uterine Glands

The histology of the endometrium has traditionally been established by observation of two-dimensional (2D) pathological sections. However, because human endometrial glands exhibit coiling and branching morphology, it is extremely difficult to obtain an entire image of the glands by 2D observation. In recent years, the development of three-dimensional (3D) reconstruction of serial pathological sections by computer and whole-mount imaging technology using tissue clearing methods with high-resolution fluorescence microscopy has enabled us to observe the 3D histoarchitecture of tissues. As a result, 3D imaging has revealed that human endometrial glands form a plexus network in the basalis, similar to the rhizome of grass, whereas mouse uterine glands are single branched tubular glands. This review summarizes the relevant literature on the 3D structure of mouse and human endometrium and discusses the significance of the rhizome structure in the human endometrium and the expected role of understanding the 3D tissue structure in future applications to systems biology.

scholarly journals Struktur Anatomi dan Uji Histokimia Terpenoid dan Fenol Dua Varietas Sirih Hijau (Piper betle L.)

BIOSCIENTIAE ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 1
Author(s):  
Gusti Puspa Dewi ◽  
Evi Mintowati Kuntorini ◽  
Eny Dwi Pujawati
Keyword(s):  
Copper Acetate ◽  
Anatomical Structure ◽  
Secretory Cells ◽  
Cell Diameter ◽  
Piper Betle ◽  
Vascular Bundles ◽  
Palisade Parenchyma ◽  
Betel Leaf ◽  
Epidermal Tissue ◽  
Pith Parenchyma

This study aims to determine the anatomical structure and histochemical test of terpenoid and phenol compounds in two varieties of green betel plants (Piper betle). Making leaves anatomical structure preparations using the fresh method, testing terpenoid compounds with 5% copper acetate, testing phenol with ferric trichloride 10% and some grains of sodium carbonate. The observations of the anatomical structure of green betel leaf varieties 1 and varieties 2 have similarities consisting of the upper epidermis, upper hypodermis, palisade parenchyma, parenchymal sponges, vascular bundles (xylem and phloem), sclerenchyma, cholenchyma, lower epidermis, lower hypodermis, secretory cells, trichoma, stoma and calcium oxalate crystals, and in varieties 2 look more trichomes. The anatomical structure of the variety 1 betel stem and varieties 2 are arranged from the outside in the direction of the epidermal tissue, colenchymal tissue, cortical bundles, sclerenchyma, cortex, medullary and peripheral vascular files, pith, the central part of the stem is a secretory gland. Phenol in betel vine varieties 1 and varieties 2 is positive in the secretion cell part which is spread in the parenchymal tissue of the mother's leaf bone and lamina, whereas in the stem is spread around the cortex and pith parenchyma. Positive secretion cells contain phenol not as much as secretory cells containing terpenoids. Based on quantitative observations the size of oil cell density and secretion cell diameter, the essential oils contained in the cell secretions in the leaves of variety 1 are more than varieties 2 while in the varieties 2, there are more varieties 1.

Corynebacterium oortii. [Descriptions of Fungi and Bacteria].

1973 ◽  
Author(s):  
J. F. Bradbury
Keyword(s):  
Geographical Distribution ◽  
Storage Period ◽  
Vascular Bundles ◽  
Lower Epidermis ◽  
Tulipa Gesneriana ◽  
White Spots ◽  
Leaf Infection ◽  
Tulip Bulbs ◽  
Short Time ◽  
White Scale

Abstract A description is provided for Corynebacterium oortii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Tulipa gesneriana, the garden tulip. DISEASE: 'Geel-pok' (yellow pustule) of tulip bulbs and 'hels vuur' (hell-fire) of the leaves. Primary infection occurs on leaves, which show silver grey spots after a short time. These become up to about 5 mm diam. with brittle, easily cracked epidermis and disorganised-looking parenchyma within. Plants may also show leaves with areas in which the upper and lower epidermis is badly cracked, giving a characteristic rough look to the leaves. These plants show yellowish stem interiors that run down to the young growing bulbs. On bulbs the outermost white scale develops many tiny white spots which turn yellow and by the end of the storage period are yellow areas with raised tissue and ruptured outer skin. In section many vascular bundles are yellow. Less severely affected bulbs develop into stunted plants with leaves showing silvery streaks along veins. GEOGRAPHICAL DISTRIBUTION: Netherlands, England. TRANSMISSION: By planting out of infected bulbs, which may produce infected plants and in turn more infected bulbs; also from plant to plant in the field by leaf infection. The latter presumably in windy and wet conditions.

Postfire Regeneration of a Mediterranean Heathland in Southern Spain

1996 ◽  
Vol 6 (4) ◽  
pp. 191 ◽  
Author(s):  
F Ojeda ◽  
T Maranon ◽  
J Arroyo
Keyword(s):  
Woody Species ◽  
Soil Surface ◽  
Calluna Vulgaris ◽  
Community Diversity ◽  
Southern Spain ◽  
Strait Of Gibraltar ◽  
Vegetative Organs ◽  
Wild Fire ◽  
Postfire Regeneration

Fire is a recurrent disturbance in the vegetation of Mediterranean climate regions. Most of the woody species (16 out of 19) in a Mediterranean heathland community, in the Strait of Gibraltar region of southern Spain, sprouted from subterranean vegetative organs after a wild-fire. Dominant sprouters were the prostrated oak Quercus lusitanica, three gorses, Genista tridens, G. tridentata and Stauracanthus boivinii, and a heath, Erica scoparia. About 100 seedlings m-2 of 14 woody species were censused in the first three years after fire. The highest density of seedlings was recorded for heather (Calluna vulgaris), a rockrose (Cistus populifolius subsp. major) and a gorse (Genista triacanthos). Woody vegetation covered up to 85% of the soil surface in the third year after fire. At this stager the community was co-dominated by the sprouters Quercus lusitanica (21%), Genista tridentata (21%) and Stauracanthus boivinii (20%), and the seeder Cistus populifolius subsp. major (20%). A total of 52 herbaceous species, many of them (35) perennials, was recorded, showing a temporal change in species composition. The role of fire influencing community diversity and the consequences for the conservation of heathlands in the Strait of Gibraltar region, are discussed.

scholarly journals Reactive oxygen species as important regulators of cell division

2020 ◽  
Author(s):  
Weiliang Qi ◽  
Li Ma ◽  
Fei Wang ◽  
Ping Wang ◽  
Junyan Wu ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Cell Wall ◽  
Cell Division ◽  
Cold Stress ◽  
Reactive Oxygen ◽  
Vascular Bundles ◽  
Oxygen Species ◽  
Root Primordia ◽  
Lateral Root Primordia

AbstractCurrently, the role of reactive oxygen species (ROS) in plant growth is a topic of interest. In this study, we discuss the role of ROS in cell division. We analyzed ROS’ impact on the stiffness of plant cell walls and whether ROS play an important role in Brassica napus’ ability to adapt to cold stress. Cultivated sterile seedlings and calli of cold-tolerant cultivar 16NTS309 were subjected to cold stress at 25°C and 4°C, respectively. Under normal conditions, O2.− mainly accumulated in the leaf edges, shoot apical meristem, leaf primordia, root tips, lateral root primordia, calli of meristematic nodular tissues, cambia, vascular bundles and root primordia, which are characterized by high division rates. After exposure to cold stress, the malondialdehyde and ROS (O2.−) contents in roots, stems and leaves of cultivar 16NTS309 were significantly higher than under non-cold conditions (P < 0.05). ROS (O2.−) were not only distributed in these zones, but also in other cells, at higher levels than under normal conditions. A strong ROS-based staining appeared in the cell wall. The results support a dual role for apoplastic ROS, in which they have direct effects on the stiffness of the cell wall, because ROS cleave cell-wall, and act as wall loosening agents, thereby either promoting or restricting cellular division. This promotes the appearance of new shoots and a strong root system, allowing plants to adapt to cold stress.

scholarly journals Cardiac Imaging in Arrhythmias

2019 ◽  
Vol 71 (1) ◽  
pp. 5-8
Author(s):  
Sergiu Batâr ◽  
Florina Batâr ◽  
Victor Costache ◽  
Ioan Manțiu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cardiac Arrhythmias ◽  
Gold Standard ◽  
Pulmonary Veins ◽  
Tissue Structure ◽  
Resonance Imaging ◽  
Common Indication ◽  
Standard Measurement

Abstract Cardiac arrhythmias occur frequently in valvular patients. In valvular patients the role of echocardiography is essential, due to prognostic variations. A common indication of CT coronarography is the evaluation of the coronary arteries, with the highlighting of the light coronary plaques, but also accurately measures the dimensions of the left atrium and the anatomy of the pulmonary veins. In the last years cardiac MRI (magnetic resonance imaging) has been used in the clinic and research media to establish the gold standard measurement for the volumes of heart cavities, their function and tissue structure. All these three methods are essential for the evaluation and treatment of the cardiac patient with important arrhythmia.

scholarly journals Role of Vascular Bundles in Ripening of Rice Kernel in Relation to the Locations on Panicle

1970 ◽  
Vol 39 (3) ◽  
pp. 301-309 ◽  
Author(s):  
Fateh Muhammad CHAUDHRY ◽  
Kazuo NAGATO
Keyword(s):  
Vascular Bundles

scholarly journals Suppression of Ethylene Responses Through Application of 1-Methylcyclopropene: A Powerful Tool for Elucidating Ripening and Senescence Mechanisms in Climacteric and Nonclimacteric Fruits and Vegetables

HortScience ◽  
2008 ◽  
Vol 43 (1) ◽  
pp. 106-111 ◽  
Author(s):  
Donald J. Huber
Keyword(s):  
Growth Regulator ◽  
Fruits And Vegetables ◽  
Higher Plants ◽  
Direct Control ◽  
Vegetative Organs ◽  
Molecular Approaches ◽  
Ethylene Action ◽  
And Storage ◽  
Subsequent Introduction

The discovery of 1-methylcyclopropene (1-MCP) as an inhibitor of ethylene action has provided yet another effective tool for understanding the role of this hormone in the development of higher plants. In the nearly 12 years since the description of the effects of this growth regulator on ethylene action, the subsequent introduction of stable formulations has resulted in an explosive increase in 1-MCP-targeted research, particularly, although not exclusively, in the discipline of postharvest science. The vicinal relationship between 1-MCP and postharvest biology is understandable in view of the established roles of ethylene, both beneficial and detrimental, in the handling and storage behaviors of a vast majority of harvested fruit and vegetative organs. The use of 1-MCP is proving to be supplemental to molecular approaches for identifying and understanding the spectrum of senescence and ripening processes under the direct control of ethylene perception. Climacteric fruits have served as the predominant target for investigations of 1-MCP, and the responses of these fruits have confirmed that the antagonist operates in opposition to ethylene. Studies of nonclimacteric fruits challenged with 1-MCP and other ethylene action inhibitors have identified both ethylene-dependent and ethylene-independent ripening processes and have posed interesting questions regarding the canonical distinctions between climacteric and nonclimacteric fruits.

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