scholarly journals Adaptation and taxonomic value of leaf anatomical characteristics of selected Ipomoea L. species

2021 ◽  
Vol 42 (3(SI)) ◽  
pp. 872-878
Author(s):  
T. Noraini ◽  
◽  
A.J. Amirul-Aiman ◽  
A.R. Ruzi ◽  
H. Bunawan ◽  
...  
Keyword(s):  
Leaf Anatomy ◽  
Cell Walls ◽  
Glandular Trichome ◽  
Species Differentiation ◽  
Leaf Lamina ◽  
Abaxial Side ◽  
Leaf Venation ◽  
Anatomical Features ◽  
Anatomical Characteristics ◽  
Leaf Anatomical Characteristics

Aim: To investigate the taxonomic value of leaf anatomical characteristics and to determine the anatomical features that enabled the species to adapt to different environmental conditions. Methodology: Three methods were applied for leaf anatomy observation: sectioning using a sliding microtome, leaf clearing and epidermal peels. Results: The findings showed some common anatomical characteristics shared in all species studied, such as incomplete leaf venation, the presence of trichome and schlerenchyma cells, and the presence of mucilaginous idioblast cells in the petiole and midrib. Straight-to-sinuous anticlinal cell walls, amphistomatic leaves, and three types of stomata: parasitic, anomocytic and staurocytic were on the abaxial side of leaf lamina in this study. Peltate and capitate glandular trichome, as well as simple trichome, were all present in the petiole, midrib and lamina. However, peltate glandular trichome were only found in the root of I. triloba. Druses were observed in all species, except I. batatas. Interpretation: Leaf anatomical characteristics possess taxonomic value, especially in species differentiation and identification, that can be subsequently useful in explaining plant's adaptation to their environment.

scholarly journals Comparative Leaf Anatomy of Selected Medicinal Plants in Acanthaceae

2018 ◽  
Vol 17 (2) ◽  
Author(s):  
Che Nurul Aini Che Amri ◽  
Nur Shuhada Tajudin ◽  
Rozilawati Shahari ◽  
Fatin Munirah Azmi ◽  
Noraini Talip ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Cross Section ◽  
Leaf Anatomy ◽  
Peninsular Malaysia ◽  
Species Level ◽  
Vascular Bundles ◽  
Taxonomic Significance ◽  
Plant Identification ◽  
Anatomical Characteristics ◽  
Leaf Anatomical Characteristics

Comparative leaf anatomy study were conducted in three taxa of Acanthaceae from peninsular Malaysia. Three chosen taxa were Acanthus ebracreatus (Vahl), Andrographis paniculata (Burm.f.) Wall. ex Nees and Chroesthes longifolia (Wight) B. Hansen which is commonly used as traditional medicine especially in peninsular Malaysia. The main objective is to identify the leaf anatomical characteristics that can be used in plant identification and also for supportive data in plant classification. The procedures involved such as cross section using sliding microtome on the petiole, lamina, midribs and marginal, leaf clearing and observation under light microscope. Results have shown the similarities and variations in leaf anatomical characteristics. The anatomical characteristics observed include petiole and midrib outlines, patterns of petiole and midrib vascular bundles, presence of cystolith cells, presence of hypodermis layers in lamina and presence and types of trichomes. In conclusion, results showed that anatomical characteristics have taxonomic significance that can be used in classification especially at species level.

The histological basis of leaf dimorphism in Selaginella martensii

1980 ◽  
Vol 58 (11) ◽  
pp. 1225-1234 ◽  
Author(s):  
Nancy G. Dengler
Keyword(s):  
Leaf Anatomy ◽  
Cell Area ◽  
Palisade Layer ◽  
Abaxial Side ◽  
Abaxial Epidermis ◽  
Future Studies ◽  
Anatomical Features ◽  
Adaxial Epidermis ◽  
Significant Difference ◽  
Shoot System

The dorsiventral shoot system of Selaginella martensii is characterized by opposite pairs of dorsal and ventral leaves that are dimorphic in size and form. Some of the anatomical features associated with this dimorphism are related to the orientation of the shoot with regard to light, e.g., the abaxial epidermis of the small dorsal leaves and the adaxial epidermis of the large ventral leaves consist of conical cells of approximately the same size containing a single cup-shaped plastid. The shaded epidermal layers (abaxial in ventral and adaxial in dorsal leaves) consist of tabular cells with numerous small plastids; measurement of cell area in these layers shows a significant difference between leaf types. Other features of leaf anatomy do not show that same relationship to the direction of light: stomata are found on the morphologically abaxial side of the leaf regardless of orientation, as are the epidermal sclereids. The mesophyll is homogeneous and lacks a palisade layer. These quantitative observations extend earlier descriptions and provide a basis for future studies of development of these dimorphic leaf types.

scholarly journals Effect of stress on the leaf anatomy of sugarcane cultivars with different drought tolerance (Saccharum officinarum, Poaceae)

2020 ◽  
Vol 68 (4) ◽  
Author(s):  
Worasitikulya Taratima ◽  
Thapakorn Ritmaha ◽  
Nuntawoot Jongrungklang ◽  
Pitakpong Maneerattanarungroj ◽  
Narisa Kunpratum
Keyword(s):  
Drought Stress ◽  
Leaf Anatomy ◽  
Saccharum Officinarum ◽  
Stomatal Size ◽  
Anatomical Features ◽  
Anatomical Characteristics ◽  
Planting Methods ◽  
Drought Tolerant ◽  
Crop Cycle ◽  
Cuticle Thickness

ABSTRACT. Introduction: Drought is an important stress factor for sugarcane production in many areas of the world. Water proportion and moisture indices are applicable information for agronomic planning to forecast water excess or deficit during the crop cycle. Objective: Leaf anatomical features of two different sugarcane Saccharum ‘UT12’ (drought susceptible cultivar) and Saccharum ‘UT13’ (drought tolerant cultivar) were compared under early drought stress situation between 30 and 90 days after planting. Methods: Forty leaf anatomical features were investigated using peeling and free hand sectioning technique. Results: Some anatomical characteristics showed response to drought stress. Saccharum ‘UT12’ demonstrated higher sensitivity toward anatomical characteristics than Saccharum ‘UT13’. A total of 23 and 15 out of the 40 anatomical characteristics showed significance in Saccharum ‘UT12’ and Saccharum ‘UT13’, respectively. Some anatomical features such as cell wall and cuticle thickness, vascular bundle size, stomatal size and density can be used as important markers for drought stress assessment in sugarcane leaf. Conclusions: This is the first report describing comparative leaf anatomy of sugarcane Saccharum ‘UT12’ and Saccharum ‘UT13’ in Thailand under drought stress. Results will provide important information to improve adaptation mechanisms of tolerant sugarcane cultivars under initial drought stress situations.

scholarly journals The leaf anatomical features of some Rosa species in relation to their drought resistance

2016 ◽  
Vol 71 (1) ◽  
pp. 16-19 ◽  
Author(s):  
N. Nuzhyna ◽  
O. Tkachuk
Keyword(s):  
Drought Tolerance ◽  
Drought Resistance ◽  
Leaf Anatomy ◽  
Anatomical Structure ◽  
Anatomical Features ◽  
Rosa Species

The leaf anatomy of species of the genus Rosa: R. donetzica, R. kokanica, R. roxburhii, R. rugosa, R. spinosissima was studied. It was found that the plants R. donetzica and R. kokanica have very low drought tolerance by the anatomical structure. The plants of species R. rugosin and R. spinosissima have most xeromorphy features.

Leaf micromorphology of the Persicaria sect. Cephalophilon (Polygonaceae) and its systematic re-evaluation

Phytotaxa ◽  
2019 ◽  
Vol 391 (3) ◽  
pp. 167 ◽  
Author(s):  
MIN-JUNG KONG ◽  
SUK-PYO HONG
Keyword(s):  
Comparative Study ◽  
Cell Walls ◽  
Smooth Surface ◽  
Glandular Trichomes ◽  
Adaxial Side ◽  
Abaxial Side ◽  
Stomatal Size ◽  
Systematic Significance ◽  
Leaf Micromorphology ◽  
Anomocytic Stomata

A comparative study of the leaf microstructures of 19 taxa belonging to the Persicaria sect. Cephalophilon and related four Koenigia taxa was performed by LM and SEM to evaluate their systematic significance. Both amphistomatic and hypostomatic leaves were observed in the taxa studied. The stomatal size ranged from 17.04–41.96 × 13.41–37.30 μm, and stomata on the adaxial side were larger than those on the abaxial side in general. Anomocytic stomata occurred most commonly, but more than one type of stomata was observed on the same surface. Paracytic stomata was found in both Persicaria palmata and P. criopolitana. The epidermal cells usually have straight to sinuate anticlinal cell walls (ACW), and the ACW on the abaxial side of most taxa is much more undulated than that on the adaxial side. Cuticular striation was observed in most of the studied taxa, which was restricted to only the adaxial side. Two types of crystals were observed: druse and prismatic, and seven types of trichome were recognized: five types of non-glandular trichomes (stellate with smooth surface, multiseriate with either smooth or striated surface, and uniseriate with either smooth or papillose surface), and two types of glandular trichomes (peltate and long-stalked pilate). The leaf micromorphology in this study was categorized into five types based on the stomata, epidermis, crystal and trichome, as further systematic significance of the leaf epidermal characters within the P. sect. Cephalophilon are discussed. In addition, we propose a new taxonomic combination in the P. sect. Cephalophilon.

scholarly journals Adaptive leaf anatomical characteristics of Brachiaria ruziziensis genotypes (Poaceae) in different environments - doi: 10.4025/actascibiolsci.v35i4.18265

2013 ◽  
Vol 35 (4) ◽  
Author(s):  
Fabíola Carvalho Santos ◽  
Vânia Helena Techio ◽  
Aline Silva Freitas ◽  
Evaristo Mauro de Castro ◽  
Lisete Chamma Davide ◽  
...  
Keyword(s):  
Anatomical Characteristics ◽  
Brachiaria Ruziziensis ◽  
Leaf Anatomical Characteristics

scholarly journals Comparative anatomy of the absorption roots of terrestrial and epiphytic orchids

2008 ◽  
Vol 51 (1) ◽  
pp. 83-93 ◽  
Author(s):  
Ana Sílvia Franco Pinheiro Moreira ◽  
Rosy Mary dos Santos Isaias
Keyword(s):  
Cell Walls ◽  
Comparative Anatomy ◽  
Evolutionary Process ◽  
Minas Gerais ◽  
Point Of View ◽  
Endodermal Cell ◽  
Epiphytic Orchids ◽  
Anatomical Characteristics ◽  
Cell Layers ◽  
Casparian Strips

The present study compared roots of terrestrial and epiphytic Orchidaceae, analyzing the anatomical characteristics from an ecological point of view. The material was collected at three different sites in Minas Gerais / Brazil and was fixed in FAA. Transverse sections were obtained by freehand sections or from material previously embedded in Paraplast® or Historesin®. The prominent characteristics of the epiphytic group were: significant smaller perimeter, epidermis with 3 or more cell layers, U-thickened exodermal cell walls, O-thickened endodermal cell walls, and a low ratio between the caliber and the number of protoxylem arches. The terrestrial group presented simple or multiseriate epidermis, and exodermis and endodermis with typical Casparian strips. The anatomical characteristics should have evolved with several adaptations to distinct environments during evolutionary process.

scholarly journals Variation in leaf anatomical characteristics in chromosomal segment substitution lines of KDML105 carrying drought tolerant QTL segments

ScienceAsia ◽  
2018 ◽  
Vol 44 (3) ◽  
pp. 197 ◽  
Author(s):  
Charanya Kulya ◽  
Jonaliza L. Siangliw ◽  
Theerayut Toojinda ◽  
Watanachai Lontom ◽  
Wattana Pattanagul ◽  
...  
Keyword(s):  
Chromosomal Segment ◽  
Substitution Lines ◽  
Anatomical Characteristics ◽  
Drought Tolerant ◽  
Segment Substitution ◽  
Leaf Anatomical Characteristics

scholarly journals Macroscopic and Microscopic Modifications of Wood after Debarking of Trees in the South Cameroon

2021 ◽  
Vol 10 (1) ◽  
pp. 30
Author(s):  
Ghislain Kenguem Kinjouo ◽  
Marie Caroline Momo Solefack ◽  
Victor François Nguetsop
Keyword(s):  
Cell Walls ◽  
Digital Image Analysis ◽  
Management Practices ◽  
Callus Tissue ◽  
Conservation Strategies ◽  
Analysis Software ◽  
Fast Green ◽  
Anatomical Features ◽  
Lateral Extent

Wounding of trees by debarking has been reported to form a callus tissue. This work aims to investigate macroscopic and microscopic modifications of wood after the removal of barks in Alstonia boonei, Scorodophloeus zenkeri, and Garcinia lucida. Species that are not yet barking were wounded to conducting experimental debarking. The wound was rectangular with 30 cm vertically with a lateral extent of 10 cm. Every three months, there was a follow-up for fifteen months during which the macroscopic and microscopic phenomena were observed and recorded. Microsections of 15–20 μm thickness were taken on a piece of wood from the regenerated and intact wood, with a sledge microtome. Staining of cell walls was done with safranin and fast green to increase contrast in an anatomical slide. Analyzes of the variability of xylem anatomical features were done by semi-automatic measurements using the SpectrumSee digital image analysis software. The speed of recovery of the bark of these three species is 9.04 cm/year for A. boonei, 5.9 cm/year for S. zenkeri, and 3.85 cm/year for G. lucida. The recovery of A. boonei’s bark is the fastest, and it just takes 15 months to heal its wound. Densities of vessels were 8, 38, and 17 per mm², respectively, for the wood of A. boonei, S. zenkeri, and G. lucida before barking. These values increased for A. boonei (26) and G. lucida (20) except for S. zenkeri (25). In all species, the diameter of the vessels has decreased in the regenerated wood. Management practices that enhance the monitoring of sustainable harvesting levels of species and promote alternative plants for the same uses should be considered as part of conservation strategies.

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