Systematic significance of anatomy and trichome morphology in. Rearrange individual pages or entire files in the desired order. The types of glandular trichomes, their ontogeny and pattern of distribution on the vegetative and reproductive organs of leonotis leonurus at different stages of development, are studied by light and scanning electron microscopy. Mar 27, 2012 e scanning electron microscopy sem image of a floret from tanacetum parthenium showing files of glandular trichomes. Plant secretory trichomes have a unique capacity for chemical synthesis and secretion and have been described as biofactories for the production of natural products. In plants, the patterned assignment of alternative cell fates lies at the heart of many developmental processes. Detail of transversal section throughout the peltate trichome with the ruptured cuticle b. Teucrium heterophyllum, a species originally described from madeira and also distributed in the ca. Pdf leaf trichomes morphology of hyptis suaveolens l. Pdf trichomes, essential oils and in vitro propagation. The capitate and peltate glandular trichomes of lavandula pinnata l. Anatomical and morphological properties of trichomes in four.
Morphology, anatomy and trichome properties of lamium truncatum boiss. The distribution and types of glandular trichomes and essential oil chemistry of thymus quinquecostatus were studied. Evolution of trichome types and its systematic significance in the genus phlomoides lamioideaelamiaceae. Peltate trichomes, consisting of a basal cell, a stalk cell and a 12. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil, mentha, rosemary, sage, savory, marjoram, oregano, hyssop, thyme, lavender, and perilla. Merge pdf files combine pdfs in the order you want with the easiest pdf merger available.
Plant glandular trichomes as targets for breeding or. Using a combination of light stereo and compound and scaning electron microscopy, this study investigates the distribution and morphology of foliar trichomes of orthosiphon labiatus lamiaceae. Number of eggs laid on genotypes jayawijaya, bromo, iac100, iac805962 and mlg 3036 was 310 eggsplant less than that on wilis. Micromorphology and histochemistry of leaf trichomes of. Plectranthus laxiflorus family lamiaceae, is an important medicinal plant, distributed east of the southern continental escarpment from humansdorp in the eastern cape province of south africa. Recover content and data from corrupt files with ease.
Nonglandular trichomes in lamiaceae and verbenaceae. Many plant of this genus which have whorls of small blue flowers are called by the common name bluecurls. The trichomes pubescences that often cover the plant body are the result of divisions of epidermal cells. Progress on trichome development regulated by phytohormone. Pdf trichome morphology and its significance in the. This study aims to investigate the morphology and ultrastructure characters of pollen grains and trichomes in order to evaluate their systematic value of these characters in specific and intraspecific separation of the saudi arabian plectranthus species.
Share your knowledge share your word file share your pdf file share your ppt file. The lamiaceae plant family is one of the largest families among the dicotyledons, many species belonging to the family being highly aromatic, due to the. By comparing the resulting large datasets across family members, the project will clarify how such chemical processes evolved in lamiaceae and in plants in general. The capitate and peltate glandular trichomes of lavandula. Trichomes are epidermal protuberances located on aerial parts of plant, that protect plant from excess transpiration, high temperature, radiation, ultraviolet uv light, and herbivore attack wagner et al.
Labiatae, tulsi, coleus, spearmint, aromatic created date. Trichomes, essential oils and in vitro propagation of lavandula pedunculata lamiaceae. South china botanical garden, chinese academy of sciences, guangzhou, 510650, china and graduate school of chinese academy of sciences, beijing, 39, china. Peltate trichomes in abaxial and adaxial epidermis in the embedded leaf section of nepeta rtanjensis a. The foliar trichomes of plectranthus laxiflorus benth. Trichomes diversity in the tropical flora of pakistan. Laymeeayseeeye or labiatae are a family of flowering plants commonly known as the mint or deadnettle or sage family. A trichome is initiated as a protuberance from an epidermal cell. The aim of this study was to identify the types of glandular trichomes that occur on the vegetative and reproductive organs of o. Different kinds of branched trichomes were observed in most species of p. Glandular trichomes and essential oil composition of. Lamiaceae amalia rusydi1, 4, noraini talip1, jalifah latip2, ruzi abdul rahman1, and idris sharif3 1school of environmental and natural resource sciences, faculty of science and technology, universiti kebangsaan malaysia, 43600 bangi, selangor, malaysia. The large lamiaceae formerly labiatae is found worldwide, with great diversity in california, mexico, and the mediterranean region the plants live in a wide variety of habitats, although many.
Lamiaceae diversification, evolution, and historical. This species is an aromatic plant which has economic importance due to its essential oil which is widely used as raw material for the perfume industry. To key genera in the lamiaceae, youll need to see how the stamens relate to the upper lip, count the number of stamens, look at details of the sepals, and more this survey starts with the allimportant genus salvia sage, which has 800 species worldwide. Micromorphological investigation of the types, dimensions and distribution of characteristic trichomes in leaves and stems in teucrium l. The terms emergences or prickles refer to outgrowths that involve more than the epidermis. The distribution and morphology of leaf trichomes of p.
I need a trait term for appressed because we have a genetic gene that influences trichome formation so that the individual hairs grow at a more acut. Department of biology masters distance learning program. Pdf morphology, anatomy and trichome properties of. Pod damage on wilis variety was approximately 80%, while on. To identify the genotype with the highest concentration of pds, uticosa plants originating from the eastern and western parts of crete greece, namely kavoussi and vrysses, respectively, or from a commercial source france, were grown in the greenhouse and analysed by hplc with both pda detector. Micromorphology and histochemistry of leaf trichomes of salvia aegyptiaca lamiaceae we performed a comprehensive study of trichomes considering the medicinal importance of the essential oils produced in glandular trichomes of salvia aegyptiaca l. Globular and multicellular base with a small and round glandular cell in the trichome tip.
The origanum lamiaceae genus is an annual, perennial and shrubby herb that is predominantly distributed around the mediterranean, eurosiberian, and iransiberian regions. Trichomes on plants are epidermal outgrowths of various kinds. In figure 2b, the spread of nonglandular trichomes and glandular trichomes is also present. Flora of the carolinas, virginia, and georgia, working draft of 17 march 2004 lamiaceae 390 lamiaceae or labiatae mint family a family of about 250 genera and 6700 species, herbs, shrubs, vines, and trees, cosmopolitan. Morphology, structure, and ontogeny of trichomes of the. Ii similar to trichome i but nonglandular and shorter 0.
These include ajugoideae, lamioideae, nepetoideae, prostantheroideae, scutellarioideae, and symphorematoideae. Lamium lamiaceae, lamioideae is a widespread and taxonomically complex genus. Morphology and histochemistry of the glandular trichomes. Type description i thin glandular trichomes consisting of 610 cells and 23 mm long. Members of the family are best known for their opposite leaves. Nonglandular trichomes in lamiaceae and verbenaceae species. Voucher specimens of phlomis olivieri used in this study no. Leaves opposite, rarely whorled or alternate, simple to pinnately dissected or compound, without stipules.
Trichome micromorphology of the east asiatic genus chelonopsis lamiaceae and its systematic implications chunlei xianga, zhaohui donga,b, hua penga,n, zhenwen liua a key laboratory of biodiversity and biogeography, kunming institute of botany, chinese academy of sciences, 2 lanhei road, heilongtan, kunming 650204, yunnan, pr china b graduate school of chinese academy of. May 28, 2015 chemical analysis of genotypes, leaf developmental stages, and organs of salvia fruticosa. Characterization and ontogeny of the glandular trichomes. The mint genome project integrates genomic, metabolite, phylogenetic, and functional datasets to investigate the evolution of the monoterpene and iridoid biosynthetic pathways in. In addition, statistical analysis for the taxa under. Long nonglandular trichomes and peltate trichomes in abaxial leaf surface c and longstalked capitate trichome d. Trichoma definition of trichoma by medical dictionary. Lamiaceae pogostemon cablin is also known as patchouli or nilam. Surabhi chandra, associate professor in the department of. An investigation of the anatomy, palynology and trichome. The glandular trichomes are termed peltate or capitate, depending on the structure of the secretory head werker 1993.
Hedge herbs, sometimes subshrubs or shrubs, annual or perennial, usually aromatic. E scanning electron microscopy sem image of a floret from tanacetum parthenium showing files of glandular trichomes. The lamiaceae labiatae is one of the most diverse and widespread plant families in terms of ethnomedicine and its medicinal value is based on the volatile oils concentration 1. Morphology of trichomes in pogostemon cablin benth. Therefore, the unique data in trichome are a resource to the trichome biology and plant defense research communities and are also expected to be a valuable resource for the annotationreannotation of model plant genomes, especially for the model legume m. The protuberance elongates, and if it develops into a multicellular structure. The specific epithet is derived from the latin word laetus pleasant, an allusion to the appearance of this plant. About the classification report about the classification download. This character doesnt always hold up with the woody species of the family. Moreover, variation in trichome characters appears to have particular value, not only for the classification at sectional or subsectional rank, but also for delimitation. Heterogenous secreted material was temporarily stored in the subcuticular space in mature peltate trichomes and released by rupture of the cuticle. However, due to transit disruptions in some geographies, deliveries may be delayed.
Upload a corrupt or damaged pdf and we will try to fix it. Click on names to expand them, and on p for plants profiles. Ten different types of trichomes were observed, and the most frequent one is attenuate, while uniseriate types with 17. The glandular trichomes were sessile, short stalked or long stalked. Lamiaceae with two new subspecies of the canary islands abstract gaisberg, m. Medicinally potential plants of labiatae lamiaceae family. Furthermore, only a very limited amount of plant trichome genomics information. Trichomes develop out of young epidermis cells, reducing air circulation on the leaf.
Plant natural products are useful for many different applications, including medicines, flavors and fragrances, and industrial uses. Trichomes of 32 species of the genus phlomoides representing its various natural groups were examined using scanning electron sem and light microscopy lm. Trichome micromorphology of the east asiatic genus. Two morphologically distinct types of glandular trichomes peltate and capitate are described. A critical systematic revision of 7 species of plectranthus lamiaceae in saudi arabia was conducted by means of numerical analyses based on. The glandular trichomes are distributed on the surface of stem, leaf, rachis, calyx and corolla, except petiole, pistil and stamen. Family lamiaceae definition of family lamiaceae by the free. Trichome micromorphology of iranian stachys lamiaceae with emphasis on its systematic implication.
Uvadare digital academic repository transcription factors. Trichomes varied among different species of this genus but were identical among different populations of a certain species, and therefore provide valuable characteristics in delimitation of sections and species. Pdf medicinal plants of the family lamiaceae as functional. Trichomes are widely distributed on surfaces of different organs in the grape genus vitis and are of taxonomic utility. To change the order of your pdfs, drag and drop the files as you want. An investigation of the anatomy, palynology and trichome types of phlomis olivieri lamiaceae 61 table 1. Distribution of peltate glandular trichomes on developing. Trichome s may be either unicellular or multicellular and are either glandular, consisting of a stalk terminating in a glandular head, or nonglandular, consisting of elongated tapering structures.
Three morphologically distinct types of glandular trichomes are described. Historically, species of the family lamiaceae have enjoyed a rich tradition of use for flavouring, food preservation, and medicinal purposes, due to both their curative and their preventive. It was shown that new peltate glands continue to form until leaf expansion. Leaves opposite, rarely whorled or alternate, simple to pinnately dissected or. Trichomes, epidermal cell features, and seed coat sculpturing of 12 lotus taxa from egypt were studied using scanning electron microscopy. Phlomideae article pdf available in flora morphology distribution functional ecology of. Towards elucidating carnosic acid biosynthesis in lamiaceae. Lamiaceae family are covered by nonglandular trichomes and glandular trichomes or secretory trichomes. A comparative anatomical study of the root, stem, leaf and petioles in 33 taxa assigned to this genus is carried out in order to address generic delimitation, subgeneric classification and species delimitation. The morphological specifications play a substantial role in classification and breeding programs of various plant taxa. In the current study, some macro and micromorphological features of salvia nemorosa, salvia syriaca, salvia frigida and salvia virgata three accessions, were investigated using scanning electron microscopy and image analysis program. Morphology, anatomy and trichome properties of lamium. Salvias are among the few genera with only 2 stamens, and the upper anther is usually.
Lamiaceae with two new subspecies of the canary islands. Glandular trichome with 4celled head, surface view. Jun, 20 these are all of the botanical terms i could find for describing how trichomes grow. Lamiaceae is native to south america and in traditional medicine has been used due to its analgesic, antiin. Generally, trichomes are divided into two subcategories, glandular and nonglandular wagner et al. In the present study, leaf trichome densities and also type were investigated in six populations of the species, because the effective substances of this species exist in essential oil of glandular trichomes. Analysis of trichome morphology and density in salvia. Pdf morphology of trichomes in pogostemon cablin benth. Nepetoideae is the largest group in lamiaceae, and it includes 3700 species or approximately half the total species diversity in the family. Two important aspects of plant natural products research are the identification of compounds in their source plants, and the characterization of the processes involved in their biosynthesis. Macro and micromorphological characters, including seed and pollen shape,size, coat sculpture, trichome structure, were studied. Understanding how neighboring cells in a developing tissue adopt distinct fates, therefore, presents a key challenge in plant development. Lamiaceae and their systematic implications ferhat celep, ahmet kahraman, zeynep atalay, musa dogan middle east technical university, department of biological sciences, 06531 ankara, turkey corresponding author.
Glandular trichome, particularly abundant on lower leaf surface, with 12 celled stalk and 4celled head, lateral view. Most lamiaceae species have glandular trichomes that emerge from the epidermal surface of their leaves, stems and reproductive structures. The anatomy, morphology and trichome distribution on the aerial parts of lamium truncatum boiss. Sweet aromatic smell due to essential oils present in sessile glandular hairs. Trichome description according to luckwill 20 and revised by channarayappa et al. Trichome morphology and its significance in the systematics of phlomoides lamiaceae. Classification for kingdom plantae down to family lamiaceae. Glandular trichomes secrete various types of compounds. Hubungan kerapatan trikoma dengan intensitas serangan. Pdf analysis of trichome morphology and density in. Two main types of trichomes in vitis are documented. Different species of lamiaceae have different types, distribution, morphology, and density of glandular trichomes, which can be important taxonomic characters schnepf 1968, elgazzar and watson 1970, heinrich et al.
Pdf the foliar trichomes of orthosiphon labiatus n. Trichome micromorphology in teucrium lamiaceae species. Lamiaceae glandular trichomes were studied in order to prepare for work on calcium distribution in normal and heat stressed plants. Epidermal cells of the lower leaf surface over main 7. Lamiaceae in saudi arabia based on morphological, palynological, andmicromorphological characters of trichomes. Moreover, variation in trichome characters appears to have particular value, not only for the. The branched, nonglandular jtype trichomes can be found int. To explore the morphology, structure and ontogeny of vitis trichomes, we investigated the diversity and distribution of trichomes in 34 species of vitis. Family lamiaceae, an introduction the family is distributed worldwide.
Aug 04, 2009 plant secretory trichomes have a unique capacity for chemical synthesis and secretion and have been described as biofactories for the production of natural products. Ctype trichomes, which are not considered in table 1, are branched. A biology professors research was highlighted by the university of nebraska kearney news this fall. However, until recently, most trichome specific metabolic pathways and genes involved in various trichome developmental stages have remained unknown. There are currently seven major groups, or subfamilies, recognized in the lamiaceae. Micromorphology of trichomes of thymus malyi lamiaceae.