Microstructure of Glandular Trichomes on Leaf Surface of Sesame and Changes of Trichome Secretions under Drought Condition

2016 ◽  
Vol 42 (2) ◽  
pp. 278 ◽  
Author(s):  
Shi SU ◽  
Rui-Hang LI ◽  
Dan-Ying LANG ◽  
Ke ZHANG ◽  
Xiao-Hu HAO ◽  
...  
Keyword(s):  
Leaf Surface ◽  
Glandular Trichomes ◽  
Drought Condition

scholarly journals Antibiosis to Beet Armyworm (Spodoptera exigua) in Lycopersicon Accessions

HortScience ◽  
1993 ◽  
Vol 28 (9) ◽  
pp. 932-934 ◽  
Author(s):  
Sanford D. Eigenbrode ◽  
John T. Trumble
Keyword(s):  
Spodoptera Exigua ◽  
Leaf Surface ◽  
Glandular Trichomes ◽  
Beet Armyworm ◽  
Lycopersicon Hirsutum ◽  
Tomato Cultivar ◽  
Type Iv ◽  
Leaf Surfaces ◽  
Susceptible Tomato ◽  
Neonate Larvae

Four accessions of Lycopersicon hirsutum f. glabratum Mull. and eight accessions of L. hirsutum f. typicum Humb. & Bonpl. were evaluated for their resistance to the beet armyworm [Spodoptera exigua (Hübner)]. Survival of S. exigua neonate larvae for up to 96 hours on foliage of all these accessions differed significantly from their survival on a susceptible tomato cultivar. Spodoptera exigua survival did not differ significantly between the two forms of L. hirsutum. Antibiosis to S. exigua in L. hirsutum f. glabratum appears similar to the levels found to other Lepidoptera. Accessions of L. hirsutum f. typicum included the very susceptible PI 199381 and the two most resistant accessions, LA 2329 and LA 1777. Insect resistance had not been reported previously in four of the L. hirsutum f. typicum accessions. Spodoptera exigua survival was significantly negatively correlated with the density of type IV glandular trichomes on the leaf surfaces, calculated across all 12 accessions. This relationship did not occur within L. hirsutum f. glabratumor L. hirsutum f. typicum accessions, nor was it significant if PI 199381 was excluded from the analysis. Leaf-surface exudates of L. hirsutum f. glabratum accessions were dominated by the methylketones 2-undecanone and 2-tridecanone. Leaf-surface exudates of L. hirsutum f. typicum were dominated by three sesquiterpenes-zingiberene, δ elemene, and γ elemene. Resistance was not correlated with the amounts of these specific compounds within or across botanical form. Spodoptera exigua survival in L. hirsutum f. typicum (excluding PI 199381) correlated negatively with the total estimated amount of leaf-surface volatiles extracted. PI 199381 may be useful as a susceptible parent for intraspecific crosses to examine S. exigua resistance in L. hirsutum.

scholarly journals Trichomes of Satureja horvatii Silic (Lamiaceae): Micromorphology and histochemistry

2012 ◽  
Vol 64 (3) ◽  
pp. 995-1000 ◽  
Author(s):  
Marija Marin ◽  
Lia Ascensao ◽  
Branislava Lakusic
Keyword(s):  
Electron Microscopy ◽  
Leaf Surface ◽  
Glandular Trichomes ◽  
Secondary Compounds ◽  
Endemic Plant ◽  
Histochemical Analysis ◽  
Different Types ◽  
Histochemical Tests ◽  
Scanning Electron ◽  
Comprehensive Study

Considering the importance of Satureja horvatii Silic as an endemic plant, and due to the essential oils produced in its glandular trichomes, we have done a comprehensive study of the micromorphology and a histochemical analysis of the plant?s glandular trichomes. This investigation was carried out using light microscopy and scanning electron microscopy. Non-glandular unbranched and three types of glandular trichomes on the leaf surface - peltate, capitate and digitiform - were investigated. The results of histochemical tests showed a positive reaction to polysaccharides, proteins, pectins, lipids and to some secondary compounds such as terpenes, tannins and phenols in different types of glandular trichomes.

scholarly journals Micromorphology and anatomy of three Symphytum (Boraginaceae) taxa from Turkey

1970 ◽  
Vol 36 (2) ◽  
pp. 93-103 ◽  
Author(s):  
Oznur Ergen Akcin ◽  
Hilal Baki
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Key Words ◽  
Leaf Surface ◽  
Glandular Trichomes ◽  
Epidermal Cells ◽  
Lower Epidermis ◽  
Micromorphology And Anatomy ◽  
Scanning Electron

Symphytum asperum Lepechin, S. ibericum Steven and S. sylvaticum Boiss. were examined morphologically, micromorphologically and anatomically. Scanning electron microscopy was used to examine leaf surface and trichomes of these species. These species had bifacial and hypostomatous leaf types. Epidermal cells of leaves were usually polygonal or irregular in form. The pattern of anticlinical cells may vary in different species and between the upper and lower epidermis of the same species. Stomata are anisocytic and anomocytic in three species. Stomata index is 27.5 for S. sylvaticum, 24.65 for S. ibericum and 21.86 for S. asperum glandular trichomes are capitate in forms and more dense on the lower epidermis than upper epidermis. Eglandular trichomes are simple, short or long, unicellular or multicellular and thin or thick. Key words: Micromorphology, Anatomy, Symphytum DOI = 10.3329/bjb.v36i2.1496 Bangladesh J. Bot. 36(2): 93-103, 2007 (December)   

COMPARATIVE STUDY OF LEAF ANATOMY AND ESSENTIAL OILS OF THE HYBRID MENTHA X VILLOSO-NERVATA AND ITS PARENTAL SPECIES M. LONGIFOLIA AND M. SPICATA

1998 ◽  
Vol 46 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Nikos Gavalas ◽  
Artemios Bosabalidis M. ◽  
Stella Kokkini
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Leaf Surface ◽  
Parental Species ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Lower Leaf Surface ◽  
Palisade And Spongy Parenchyma ◽  
Derivatives Of

Leaves of the hybrid Mentha x villoso-nervata are covered with nonglandular trichomes of intermediate length between those of its parental taxa M. longifolia and M. spicata. Glandular trichomes producing essential oils are more numerous on the lower leaf surface than on the upper one in all three mints. Their number per mm2 is higher in M. spicata and it decreases in M. longifolia and M. x villoso-nervata. Stomata are also more numerous on the lower leaf surface of the three taxa, with M. longifolia predominating. The leaf lamina of M. x villoso-nervata is ca. 83% thicker than that of M. longifolia and ca. 9% thicker than that of M. spicata. The number of chloroplasts per mm2 of mesophyll section (leaf cross section) is higher in M. X villoso-nervata. In leaf paradermal sections, the sizes of the epidermal, palisade, and spongy parenchyma cells of M. X villoso-nervata have intermediate values between those of its parental species M. longifolia and M. spicata. M. x villoso-nervata leaves are the lowest in essential oil content. As concerns the essential oil composition, the hybrid resembles one parent, M. longifolia, in the derivatives of piperitenone and piperitone, and the other parent, M. spicata, in the high amount of limonene. It differs, however, from its parental species in that it contains a higher amount of germacrene D.

scholarly journals The structure and distribution of glandular trichomes on the stems and leaves of drug eyebright (Euphrasia stricta D. Wolff ex J. F. Lehm.)

2012 ◽  
Vol 63 (2) ◽  
pp. 13-23 ◽  
Author(s):  
Elżbieta Weryszko-Chmielewska ◽  
Anna Matysik-Woźniak ◽  
Dagmara Sadowska
Keyword(s):  
Plant Material ◽  
Leaf Surface ◽  
Glandular Trichomes ◽  
Biologically Active ◽  
Vascular Bundles ◽  
Abaxial Surface ◽  
Capitate Trichomes ◽  
Stems And Leaves ◽  
Glandular Structures ◽  
Active Substances

<i>Euphrasia stricta</i> is a medicinal plant being one of the ingredients of "Herba Euphrasiae". Many studies have been devoted to the identification of biologically active substances in the herb of eyebright, but much less research has been done on the constitution of glandular structures of this taxon. This paper relates to glandular trichomes located on the stems and leaves of <i>E. stricta</i>. The trichome structure was examined using light and scanning electron microscopy. It was shown that the stems of <i>E. stricta</i> were mainly covered by non-glandular trichomes, whereas glandular trichomes were rarely found on them. However, clusters of short capitate trichomes were found to occur in specific epidermal regions on both surfaces of the leaf blades and bracts. On the adaxial leaf surface, glandular trichomes grew only in the grooves above the vascular bundles, while on the abaxial surface in the depressions located in the expanded part of the teeth. The glandular hairs consisted of 1-2 cells of the stalk and a two-celled head. Trichomes with 3- or 4-celled heads were found sporadically. The glandular trichomes functioned non-synchronously, since they differed in head size and the colour of cell protoplasts. The presence of a light secretion was found on the surface and around the trichomes in both fresh and dry plant material.

scholarly journals Population variability in Thymus glabrescens Willd. from Serbia: Morphology, anatomy and essential oil composition

2008 ◽  
Vol 60 (3) ◽  
pp. 475-483 ◽  
Author(s):  
Zora Dajic-Stevanovic ◽  
I. Sostaric ◽  
P.D. Marin ◽  
D. Stojanovic ◽  
M. Ristic
Keyword(s):  
Essential Oil ◽  
Morphological Traits ◽  
Leaf Surface ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Indigenous Populations ◽  
Oil Composition ◽  
Stem Anatomy ◽  
Essential Oil Yield ◽  
Leaf Morphological Traits

In five indigenous populations of Thymus glabrescens Willd. collected in the region of Banat (Serbia), the variability on leaf morphological traits, leaf and stem anatomy, and composition of the essential oil was studied. The major component in the studied populations was either thymol or ?-terpinene. Distinct differentiation of populations with respect to chemical composition of essential oils might be related to spatial distribution of the studied populations. No correlations between morphology, anatomy, and essential oil yield and composition were determined. Both capitate and peltate glandular trichomes were found on calyces, whereas the latter were noticed on the abaxial and adaxial leaf surface.

scholarly journals Trichome morphology of Ajuga orientalis L. (Lamiaceae) from Turkey

2014 ◽  
Vol 43 (1) ◽  
pp. 91-95
Author(s):  
Ilkay Öztürk Çali ◽  
Arzu Cansaran ◽  
Cengiz Yildirim
Keyword(s):  
Leaf Surface ◽  
Glandular Trichomes ◽  
Reproductive Organs ◽  
Leaf Petiole ◽  
Trichome Morphology ◽  
Stem Leaf

Morphology and localization of the trichomes on vegetative and reproductive organs of Ajuga orientalis L. from Turkey were investigated. Peltate, capitate glandular and non-glandular trichomes were found on the stem, leaf, petiole, calyx and corolla surfaces of A. orientalis. Three sub-types of capitate glandular trichomes were found whereas two sub-types of non-glandular ones were stated on the several organs of A. orientalis. Glandular trichomes were mainly observed on calyx and corolla, but non-glandular ones were found on the stem, leaf surface and petiole. DOI: http://dx.doi.org/10.3329/bjb.v43i1.19754 Bangladesh J. Bot. 43(1): 91-95, 2014 (June)

Delayed induced responses of birch glandular trichomes and leaf surface lipophilic compounds to mechanical defoliation and simulated winter browsing

Oecologia ◽  
2005 ◽  
Vol 146 (3) ◽  
pp. 385-393 ◽  
Author(s):  
Elena Valkama ◽  
Julia Koricheva ◽  
Vladimir Ossipov ◽  
Svetlana Ossipova ◽  
Erkki Haukioja ◽  
...  
Keyword(s):  
Leaf Surface ◽  
Glandular Trichomes ◽  
Induced Responses ◽  
Lipophilic Compounds

Phytotoxicity of constituents of glandular trichomes and the leaf surface of camphorweed, Heterotheca subaxillaris

2009 ◽  
Vol 70 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Masanori Morimoto ◽  
Charles L. Cantrell ◽  
Lynn Libous-Bailey ◽  
Stephen O. Duke
Keyword(s):  
Leaf Surface ◽  
Glandular Trichomes ◽  
Heterotheca Subaxillaris

scholarly journals The effect of organic fertilizers on the leaf morphology and stomatal density of Pogostemon cablin Benth

2021 ◽  
Vol 21 (2) ◽  
pp. 52-56
Author(s):  
MEUTIA ZAHARA ◽  
SUWARNIATI SUWARNIATI ◽  
QURRATU AINI ◽  
MUSLIM MUSLIM
Keyword(s):  
Leaf Morphology ◽  
Leaf Surface ◽  
Stomatal Density ◽  
Glandular Trichomes ◽  
Leaf Length ◽  
Organic Fertilizers ◽  
Pogostemon Cablin ◽  
Significant Difference ◽  
Food And Beverage ◽  
Aceh Province

Pogostemon cablin Benth is one of the most important crops grown in Indonesia, especially in Aceh province. It is well known as Patchouli belongs to Lamiaceae family and shows a great demand for perfume, luxury products, food and beverage industry. This study conducted to determine the effect of organic fertilizers application on the leaf morphology and stomatal density on the Pogostemon cablin Benth. The seedlings were transplanted for three months on the soil mixed either with manure or compost. The results obtained that was no significant different in affecting the leaf morphology of Pogostemon cablin Benth. The treatment with manure application showed the highest leaf length (15.23 cm) and the highest leaf width (10.5 cm), the leaf color is green. While the stomatal density obtained the significant difference among the treatments, the highest stomatal density in both side of the leaf surface showed in the application of manure, 663.5 mm-2 for adaxial part and 486.38 mm-2 for abaxial part. Stomatal type is anisocytic and on the leaf surface was found glandular and non-glandular trichomes.

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