Plectranthus Amboinicus

Total Page:16

File Type:pdf, Size:1020Kb

Plectranthus Amboinicus AMERICAN JOURNAL OF PHYSIOLOGY, BIOCHEMISTRY AND PHARMACOLOGY, 2020 VOL 10, NO. 2, PAGE 55–62 10.5455/ajpbp.20190928091007 REVIEW ARTICLE Open Access Plectranthus amboinicus: A review on its pharmacological and pharmacognostical studies Punet Kumar1, Sangam2, Nitin Kumar3 1Department of Pharmaceutical Chemistry, Shri Gopichand College of Pharmacy, Bagpat 250609, India 2Department of Pharmaceutical Chemistry, Faculty of Oxford College of Pharmacy, Hapur 201001, India 3Department of Pharmacognosy, Faculty of Parmarth College of Pharmacy, Hapur 201001, India ABSTRACT ARTICLE HISTORY In this review, information regarding the phytochemistry, traditional uses, medicinal uses, Received September 28, 2019 side effects, and future perspectives of Plectranthus amboinicus are given. Plectranthus Accepted January 01, 2020 amboinicus has been used in herbal medicines for the treatment of various disorders Published March 16,2020 such as asthma, flu, eczema, and cardiovascular disorders. The plant possesses medic- KEYWORDS inal properties (such as antimicrobial activity, antifungal activity, anti-inflammatory activity, antidiabetic activity, anxiolytic activity, antineoplastic, analgesic, antimalarial, Plectranthus amboinicus; antibiofilm efficacy, diuretic, wound healing activity, skincare, respiratory disorders, and phytochemicals; antineoplastic activity; antiplatelet aggregation activity) due to the presence of various important constituents antifungal activity; or secondary metabolites such as flavonoids, glycosides, phenols, tannins, and steroids, antimicrobial activity; which have been identified through various spectroscopic methods. The different parts alcoholic extract of the plant have used to prepare medicines. Due to the presence of various important constituents, this plant can be used for medicines without side effects. Introduction Plectranthus amboinicus is a well-known plant it is easy to grow and can survive a considerable which belongs to the Lamiaceae family. It is found the rainforests of Indonesia and Malaysia, and as in almost all over India. It is a medicinal plant which The herb Coleus aromaticus belongs to the fam- has been used for treatment in folkloric medicines ilyneglect, Lamiaceae it is a popular(family houseLabiatae plant) and worldwide genus Coleus [2]. (syrup). It can also be used in other diseases such as - (now known as Plectranthus). It is a big juicy peren flu, bronchitis, and epilepsy. Photochemical study succulentnial aromatic herb herb with with very 30–90 unique cm heightsmelling and leaves thick, showsLamiaceae that it containsis a family flavonoids which containssuch as apigenin, approx- thatfleshy are leaves aromatic. and stem. This Thisplant is is a foundhighly inbranched, all over imatelyluteolin, 200and salvigeningenera and [1]. species in the 3200 with a history of treatment in diseases and use in food. taste and aroma; the leaves of this plant are ideal The botanical name of this herb Plectranthus India, and it is also cultivated in gardens due to amboinicus helps us to identify its taxonomic place. of the dishes and is also useful to cover bad odor amboinicus - for flavoring meat and fish, as it increases the taste In this case, refers to Ambon, a moun [3,4]. There is a considerable scope for research on throughouttainous, fertile the islandEast Indies located and in Africa the Maluku and was Islands even- itsDistribution applications in the food industry [5,6]. near Indonesia. From there, the plant propagated Plectranthus amboinicus is cultivated throughout who named this herb as “oregano de la Hoja Ancha.” Cubantually naturalized oregano can in stillLatin be America found growing by the Spanish, wild in India and in Malaysia. It is also found growing in Contact Punet Kumar [email protected] Assistantvarious Professor, Asian Department and American of Pharmaceutical countries, Chemistry, and it can Shri Gopichand College of Pharmacy, Bagpat 250609, India. © 2020 The Authors. This is an open access article under the terms of the Creative Commons Attribution NonCommercial ShareAlike 4.0 (https://creativecommons.org/licenses/by-nc-sa/4.0/). Punet Kumar, Sangam, Nitin Kumar Kannada: Hindi: Doddapatre, doddapatre soppu English: Patta ajavayin, Patharchur, IndianAmroda, mint pathercheer Bengali: AmalkuchiCountry borage, Indian borage, Malayalam: Gujarati: Marathi: Panikoorka Sanskrit: Ovapan Pan ova Figure 1. Plectranthus amboinicus plant. Marathi: Karpuravalli, Sugandhavalakam, Parnayavani also be grown in gardens. This plant is widely cul- Coleus aromaticusPathurchur is very [10] popular drug in India tivated and naturalized in the old and new world this herb is used in the treatment of ulcers. It is a - which is also called as oregano. In some countries, tropics. It is also known as Cuban oregano, SpanishColeus it is very common without widespread cultivation. amboinicusthyme, Orégano BrujoC. aromaticus (Puerto Rico), Indian bor kind of big juicy herb and has aromatic smell, and age, Mexican thyme, or Mexican mint (syn. of mint and also they are thick and juicy. Different Plant morphology Lour., Benth) [7,8]. kindsWhen crushedof phytochemicals or squeezed, are the present leaves givein differsmell- Herbs are perennial aged 3–10 years old and areent partsfound ofto the have plant an suchimportant as fruits, role flower in the stems,treat- highly fragrant. This plant can climb, or progress, mentleaves, of and diabetes. roots Coleus[10]. Few aromaticus nutrients is ableof this to lowerplant and can reach about 1-m height, and the leaves are - thethick, leaves simple, is broadly and light oval blade, or triangular a fat green shapes opposite (cut- betic agent and also helps in other problems caused arrangement of leaves (2.5–3 cm long). Shape of dueblood to glucose high sugar levels, levels so it such can beas usedit may as be an useful antidia in of the leaf are having crenate surfaces below which containting base numerous and apex glandularacute extensively) hairs to make[9]. Margins winter trunk: trunk has tomatoes (densely covered with terms of diabetic wound healing to heal faster, due soft short hairs). Flowers have a bell-shaped calyx to its ability to prevent, or it can decrease the risk of infectionPharmacological and complications Uses of P. amboinicus [11–13]. This herb has a traditional history. From many fourand thenarrow throat teeth. is smooth The corolla inside is withpale purplishtwo lips, andthe upper lip being ovate and thin, the lower lip having medicines. This plant is effective in wound healing years, this golden herb is very effective in folkloric five times longer than the calyx, with a short tube, impressive in this sense. The fatal toxic dose of this Classification inflated throat, and short lips [10]. particularwith very herbless wasside testedeffects, in solaboratory this herb mice is prettywhich Division: Magnoliophyta showed that the plant P. amboinicus is a herb which Kingdom: Plantae has no side effects or we can say that this amazing Clade: Angiosperms Class: Magnoliopsida Plectranthus amboinicus is a herb which is used Order: Lamiales inherb the have treatment no side of effects famous [14,15]. diseases such as cephal- Family: Lamiaceae - Genus: Plectranthus Species: Coleus aromaticus gia, otalgia, anorexia, dyspepsia bloating, colic, diar Synonyms: Coleus amboinicus Lour rhea, cholera, gums, seizures, asthma, cough, chronic cornerbronchitis, cracks kidney are treatedcalculi, vesiclewith this calculi, plant hiccough, in Jawa. Common names of Plectranthus amboinicus . [11] Plectranthusstrangury, hepatopathy, amboinicus fever,shows and anthelmintic malaria. Mouth activ- This plant is commonly known by different names ity which is already reported and it is cultivated at different places: widely because of this reason. To accommodate the 56 A J Physiol Biochem Pharmacol • 2020 • Vol 10 • Issue 2 A review on Plectranthus amboinicus research and analysis have been conducted which inside the body is also caused by metamorphism willincrease to prove in demand the antioxidant for herbal activity medicines, of P. constantamboin- processinflammation of tissue and arthritis. proteins. Autoantigen Agents that production prevent icus denaturation variables are worthwhile to develop - [16]. ornamentals.Members of Ayurvedic the genus practitionersColeus are very have import used as anti-inflammatory drugs. By doing a comparison- theant Coleusbecause varieties they provide in chronic food, cough medicine, and asthma and teinof reference denaturation. standard When drug compared and the withplant standard extract, we can find the concentration that inhibits the proP. amboinicus - includes calculus, gonorrhea, heart disease, fever, mationdrug, the at effectsdifferent were concentrations more effective. using Extracts egg albu of - piles, Dyspepsia. Since ancient times, the plant was- min. The acetaminophen were used to isstudy used the as aeffect standard of inflam drug. also widely studied for activities, such as previous alsobiochemical they are antimutagenic a good source and for cancer, the treatment these com of ponents are antigen toxic in characteristics, and Depending on the potency of extract, an inhibition preventsof proteins in vitrovaries. denaturation. After the study, Effects we are found due to that the Antimicrobial activity diseases [17]. presenceplant extract of polyphenolic shows anti-inflammatory content and may activity be due as to it The essential oil was isolated by hydrodistillation the synergistic activity of more than one compound of P.
Recommended publications
  • A Facile Approach for the Synthesis of Cobalt
    || Volume 5 || Issue 6 || June 2020 || ISO 3297:2007 Certified ISSN (Online) 2456-3293 A FACILE APPROACH FOR THE SYNTHESIS OF COBALT NANOPARTICLES FROM PLECTRANTHUS AMBOINICUS LEAF EXTRACT AND IT’S POTENTIAL IN BIOLOGICAL APPLICATIONS Amutha Malaichamy1 Sathya N.2 Assistant Professor of Chemistry V.V.Vanniaperumal College for women Virudhunagar, 626701India1 PG student of Chemistry V.V.Vanniaperumal College for women Virudhunagar, 626701 India2 [email protected]. [email protected] ------------------------------------------------------------------------------------------------------------ Abstract: Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. This research work has aimed at achieving the synthesis of metal nanoparticles by using the leaf extract of the Plectranthus amboinicus(Oma valli). Phytochemical screening of aqueous extract of the plant revealed the various bioactive compounds like Saponins, Polyuronides reducing compounds; alkaloids, flavonoids, terpenoids and glycosides. Leaf extracts of P.A. and various concentration of Cobalt chloride hexahydrate (0.02M, 0.04M, 0.06M, and 0.08M) were prepared. 25 mL of the Plectranthus amboinicus was added to each concentration of cobalt (II) chloride hexahydrate in 1:1 ratio. The mixture was then subjected to heating process which leads to the formation of nanoparticles in various extract concentrations. The nanoparticles formed were subjected to IR and UV studies. Antibacterial activity was carried out on well diffusion method for Pseudomonas and Streptococcus bacteria at different concentrations. Minimum inhibitory zone was found only in Pseudomonas at the concentrations 0.04M and 0.08M (at 50μL both shows zone of inhibition 0.8mm, but at 100μL 0.04M shows slightly higher inhibition of 1mm 0.9mm).
    [Show full text]
  • A New Species of Plectranthus (Lamiaceae) from Saudi Arabia
    Turkish Journal of Botany Turk J Bot (2016) 40: 506-513 http://journals.tubitak.gov.tr/botany/ © TÜBİTAK Research Article doi:10.3906/bot-1601-8 A new species of Plectranthus (Lamiaceae) from Saudi Arabia 1,2, Kadry ABDEL KHALIK * 1 Department of Biology, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia 2 Department of Botany, Faculty of Science, Sohag University, Sohag, Egypt Received: 06.01.2016 Accepted/Published Online: 19.03.2016 Final Version: 19.07.2016 Abstract: Plectranthus hijazensis Abdel Khalik (Lamiaceae) is described as a new species from Al-Baha Province in Saudi Arabia. Information given on the new species includes a taxonomic description and its affinity to Plectranthus asirensis L. A key to Plectranthus species of Saudi Arabia is provided, and the relationships of the species and the relevant morphological characters, particularly seed, pollen grains, trichomes, and anatomy of stem and leaf, are discussed. A distribution map of the new species and related species is provided. Key words: Plectranthus, Lamiaceae, new species, pollen, seed, anatomy 1. Introduction (KSU, K, and E) and also with collected specimens found Lamiaceae is a large family that spread widely and adapted in the relevant literature (Collenette, 1999; Chaudhary, to nearly all habitats and altitudes. The genus Plectranthus 2001). Based on the comparative morphological studies L. is one of the largest genera of Lamiaceae and belongs conducted by the author, specimens from Al-Baha to the subfamily Nepetoideae, tribe Ocimeae, and subtribe Province were found to represent a species new to science. Plectranthinae. Plectranthus comprises about 300 species A map is provided showing the distribution of Plectranthus distributed in both tropical and warm regions of the hijazensis Abdel Khalik and related species based on the Old World (Codd, 1985; Retief, 2000).
    [Show full text]
  • COLEUS 'FAIRWAY RUBY' Solenostemon Scutellarioides 'Fairway Ruby' Characteristics Culture Noteworthy Characteristics Problems Ga
    COLEUS 'FAIRWAY RUBY' Solenostemon scutellarioides 'Fairway Ruby' Characteristics Zone: 10 to 11 Soil: Moist, well-drained Height: 10 to 15 Inches Water: Medium Width: 12 Inches Maintenance: Low Bloom Time: Flowers not showy Flower: Insignificant Bloom Description: Blue to white Leaf: Colorful Sun: Part sun Tolerate: Shade Culture Winter hardy to USDA Zones 10-11. In other zones, grow as garden annuals or in pots that can be overwintered indoors or as houseplants. Outdoors, grow in moist, organically rich, loose soils in part shade. Soils must not be allowed to dry out. ‘Fairway Ruby’ coleus produces foliage with bright red center and wide off-white margin with green edging. Produces tiny blue or white flowers, 1/2" long anytime throughout year. Pinch out to maintain plant health, foliage color, and attractive, compact plants. Does not tolerate water logging. Water moderately when in growth and apply a balanced liquid fertilizer at alternate waterings. When in growth, apply a high nitrogen fertilizer every 2 weeks. Keep just moist. Plants grown in too much shade may become leggy. Noteworthy Characteristics Plectranthus scutellarioides, commonly known as coleus, is a tropical evergreen tender perennial that has been a popular foliage plant since at least Victorian times. It is native to Southeast Asia and Malaysia. It has been assiduously hybridized over the years into a very large number of vegetatively propagated and seed propagated strains with an almost infinite number of leaf color combinations including most colors of the spectrum except true blue. Cultivars range in size from dwarf 6” tall plants to large mounded 36” tall plants.
    [Show full text]
  • Plectranthus Amboinicus (Lour) Spreng
    Journal of Applied Pharmaceutical Science 01 (02); 2011: 75-81 © 2010 Medipoeia Pharmacognostical standardization and Received: 25-05-2011 Revised on: 30-03-2011 Accepted: 05-04-2011 toxicity profile of the methanolic leaf extract of Plectranthus amboinicus (Lour) Spreng Preeja G. Pillai, P. Suresh, Gayatri Aggarwal, Gaurav Doshi and Vidhi Bhatia ABSTRACT The present investigation was intended to evaluate the toxicity of the methanolic leaf extract of Preeja G. Pillai, Gayatri Aggarwal, a traditionally used plant Plectranthus amboinicus (Lour) Spreng. Plant material was analysed for Gaurav Doshi and Vidhi Bhatia various pharmacognostical parameters as per WHO guidelines procedure i.e., foreign matter, Department of Pharmacology microscopical sections, loss on drying, water and alcoholic extractive values, Total ash, acid VES College of Pharmacy, soluble ash, heavy metals, phytochemical analysis and toxicity studies. Acute & Sub acute Mumbai, India toxicity of the methanolic extract was evaluated in albino mice (Female) after ingestions of the extract during one day (Acute model) and during 28days (sub acute model).The studies on sub P. Suresh acute toxicity reveals that no mortalities or evidence of adverse effects have been observed in Department of Pharmaceutics Albino mice following acute oral administration at the highest dose of 2000mg/kg crude extracts GITAM Institute of Pharmacy of Plectranthus amboinicus (Lour) Spreng. Similarly, in sub-acute toxicity study methanolic Visakhapatnam, India extract 200,400 mg/kg body wt of Plectranthus amboinicus did not cause any changes in hematological and biochemical parameters. Studies on histopathological examination of vital organs showed normal architecture suggesting no morphological disturbances. Plectranthus amboinicus (Lour) Spreng can be considered as safe as it did not cause either any lethality or adverse changes in the general behavior in mice.
    [Show full text]
  • Plectranthus: a Genus Chosen for New Plant Development Through Tissue Culture and Somaclonal Variation©
    412 Combined Proceedings International Plant Propagators’ Society, Volume 57, 2007 Plectranthus: A Genus Chosen for New Plant Development Through Tissue Culture and Somaclonal Variation© Ockert Greyvenstein and Mark Bridgen Department of Horticulture, Cornell University, Ithaca, New York 14853 U.S.A. Email: [email protected] INTRODUCTION Plectranthus, an Old World genus, is a group of herbaceous plants belonging to the Lamiaceae family and consists of about 350 known species distributed throughout summer rainfall areas of Africa, Madagascar, India, Australia, and a few of the Pacific islands (Van Jaarsveld, 2006). Plectranthus are mostly soft, low-growing semi-succulent to succulent herbs or shrubs, some with unusually beautiful tubular flowers ranging in color from blue, violet, white, and pink (Brits et al., 2001). The name Plectranthus literally means spurflower (plectron = spur and anthos = flower) and refers to the spur at the base of the corolla tube ofPlectranthus fruitico- sus. This species was the first plant in this genus to be described (Codd, 1975). This name is confusing because only a couple of the species in the genus have this spur. Plectranthus is a very diverse group of plants with some of the species converging into other genera. DNA studies are needed to clarify some of the taxonomic confu- sion within this genus. Plectranthus has been referred to as a “horticulturally neglected” genus (Van Jaarsveld, 2006) and many species of the commercially grown Plectranthus have had very little or no improvement via plant breeding. A small number of the south- ern African Plectranthus has been known and grown in the U.S.A.
    [Show full text]
  • Infestation of Field Dodder (Cuscuta Campestris Yunck.)
    plants Article Infestation of Field Dodder (Cuscuta campestris Yunck.) Promotes Changes in Host Dry Weight and Essential Oil Production in Two Aromatic Plants, Peppermint and Chamomile Marija Sari´c-Krsmanovi´c 1,*, Ana Dragumilo 2, Jelena Gaji´cUmiljendi´c 1, Ljiljana Radivojevi´c 1, Ljiljana Šantri´c 1 and Rada Ðurovi´c-Pejˇcev 1 1 Institute of Pesticides and Environmental Protection, Banatska 31b, 11080 Belgrade, Serbia; [email protected] (J.G.U.); [email protected] (L.R.); [email protected] (L.Š.); [email protected] (R.Ð.-P.) 2 Institute for Medicinal Plant Research “Dr. Josif Panˇci´c”,Tadeuša Koš´cuška1, 11000 Belgrade, Serbia; [email protected] * Correspondence: [email protected]; Tel.: +38-111-3076-133 Received: 13 July 2020; Accepted: 23 September 2020; Published: 29 September 2020 Abstract: Peppermint (Mentha piperita L.) and chamomile (Chamomilla recutita (L.) Rausch.) are aromatic plants with considerable economic value. These plants and their essential oils are used in medicine, cosmetics, and the food industry. One of the main limiting factors in peppermint and chamomile commercial cultivation is weed competition since weeds are able to decrease both oil amount and biomass yield. The purpose of the present study was to determine the effect of parasitism by field dodder (Cuscuta campestris Yunck.) on peppermint and chamomile dry weight and their essential oil yield and composition. Essential oils from both noninfested and infested peppermint and chamomile plants were obtained by hydrodistillation and characterized chemically by gas chromatography (GC) coupled with mass spectrometry (MS). The amount of dry matter accumulated by peppermint and chamomile plants infested by field dodder was lower (25% and 63%, respectively) compared to noninfested plants.
    [Show full text]
  • (Lamiaceae): a New Species from South Western Ghats, India
    NEW SPECIES Vol. 21, Issue 68, 2020 NEW SPECIES ARTICLE ISSN 2319–5746 EISSN 2319–5754 Species Coleus anthonyi (Lamiaceae): a new species from South Western Ghats, India Jebin Joseph1, Jose Mathew2,, Kadakasseril V. George1 1Post Graduate and Research Department of Botany, St. Berchmans College, Changanassery, IN – 686101 Kottayam, Kerala, India 2Department of Botany, Sanatana Dharma College, Alappuzha, IN - 688003, Alappuzha, Kerala, India Corresponding author: Department of Botany, Sanatana Dharma College, Alappuzha, IN - 688003, Alappuzha, Kerala, India Email: [email protected] Article History Received: 05 October 2020 Accepted: 12 November 2020 Published: November 2020 Citation Jebin Joseph, Jose Mathew, Kadakasseril V George. Coleus anthonyi (Lamiaceae): a new species from South Western Ghats, India. Species, 2020, 21(68), 337-342 Publication License This work is licensed under a Creative Commons Attribution 4.0 International License. General Note Article is recommended to print as color digital version in recycled paper. ABSTRACT A new species of Coleus (Lamiaceae: Ocimeae: Plectranthinae), C. anthonyi, from the South Western Ghats region of India is described. Detailed taxonomic description, colour photographs, illustration, status and key to the allied species of the new taxon are provided. Keywords: New species, Coelus, Kerala, Western Ghats 1. INTRODUCTION 337 Coleus Loureiro is an old world tropical distributed genus having more than 450 species (Paton et al., 2018). Recent phylogenetical Page and nomenclature studies on Subtribe Plectranthinae has resulted in the generic delimitation and inclusion of Anisochilus Wallich ex © 2020 Discovery Publication. All Rights Reserved. www.discoveryjournals.org OPEN ACCESS NEW SPECIES ARTICLE Bentham to Coleus (Paton et al., 2018; 2019). This genus consists of annual or perennial herbs or shrubs and can be recognized by its 5 lobed calyx (1 upper, 4 lower) with pedicel attached asymmetrically to the base of calyx tube, opposite the posterior lip and usually, corolla with upper lip shorter than lower.
    [Show full text]
  • Antimicrobial Activity of Coleus Ambonicus Herbal Finish on Cotton Fabric DOI: 10.5604/01.3001.0010.2854
    Mariappan Gobalakrishnan*, Dhandapani Saravanan Antimicrobial Activity of Coleus ambonicus Herbal Finish on Cotton Fabric DOI: 10.5604/01.3001.0010.2854 Bannari Amman Institute of Technology, Abstract Sathyamangalam, Tamil Nadu, India-638401 An extract obtained from Coleus ambonicus was applied on cotton fabric by means of the * E-mail: [email protected] exhaust, micro encapsulation and nano encapsulation methods, and the antimicrobial activity of the finished fabric assessed quantitatively by the AATCC test method 100 against gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) microbes. The fi- nish applied on the the samples using all three methods exhibit a good bacterial reduction percentage. The finish applied on the samples using all three methods possesses a higher bacterial reduction percentage against gram positive microbes than gram negative, even after washing. The method of washing conforms to ISO method 3. The wash durability of the antimicrobial activity was assessed by the bacterial reduction percentage after washing. The wash durability of the samples using the direct exhaust method was very poor and it lost its antimicrobial activity after 10 wash cycles. The wash durability of the samples using the micro encapsulated method shows antimicrobial activity up to 10 wash cycles, dropping gradually to very low levels at 20 wash cycles. The wash durability of the samples using nano encapsulation shows good antimicrobial activity against both gram positive and gram negative microbes even after 30 washes. Key words: Coleus ambonicus, cotton, micro encapsulation, nano encapsulation, antimi- crobial activity, bacterial reduction %, FTIR spectrum, wash durability. release mechanism. The nano encapsula- Preparation of herbal Coleus tion method of finishing provides a high ambonicus extract surface area and extends the shelf-life of Collected Coleus ambonicus herbal the finish on cotton [11, 12].
    [Show full text]
  • Constitutive and Facultative Crassulacean Acid Metabolism (CAM) in Cuban Oregano, Coleus Amboinicus (Lamiaceae)
    CSIRO PUBLISHING Functional Plant Biology, 2021, 48, 647–654 https://doi.org/10.1071/FP20127 Constitutive and facultative crassulacean acid metabolism (CAM) in Cuban oregano, Coleus amboinicus (Lamiaceae) Klaus Winter A,C, Aurelio Virgo A, Milton GarciaA, Jorge ArandaA and Joseph A. M. Holtum A,B ASmithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Republic of Panama. BCollege of Science and Engineering, James Cook University, Townsville, Qld 4811, Australia. CCorresponding author. Email: [email protected] Abstract. Plants exhibiting the water-conserving crassulacean acid metabolism (CAM) photosynthetic pathway provide some of the most intriguing examples of photosynthetic diversity and plasticity. Here, a largely unnoticed facet of CAM-plant photosynthesis is highlighted: the co-occurrence of ontogenetically controlled constitutive and environmentally controlled facultative CAM in a species. Both forms of CAM are displayed in leaves of Coleus amboinicus Lour. (Lamiaceae), a semi-succulent perennial plant with oregano-like flavour that is native to southern and eastern Africa and naturalised elsewhere in the tropics. Under well-watered conditions, leaves assimilate CO2 predominantly by the C3 pathway. They also display low levels of CO2 uptake at night accompanied by small nocturnal increases in leaf tissue acidity. This indicates the presence of weakly expressed constitutive CAM. CAM expression is strongly enhanced in response to drought stress. The drought-enhanced component of CAM is reversible upon rewatering and thus considered to be facultative. In contrast to C. amboinicus, the thin-leaved closely related Coleus scutellarioides (L.) Benth. exhibits net CO2 fixation solely in the light via the C3 pathway, both under well- watered and drought conditions.
    [Show full text]
  • Evolution Along the Crassulacean Acid Metabolism Continuum
    Review CSIRO PUBLISHING www.publish.csiro.au/journals/fpb Functional Plant Biology, 2010, 37, 995–1010 Evolution along the crassulacean acid metabolism continuum Katia SilveraA, Kurt M. Neubig B, W. Mark Whitten B, Norris H. Williams B, Klaus Winter C and John C. Cushman A,D ADepartment of Biochemistry and Molecular Biology, MS200, University of Nevada, Reno, NV 89557-0200, USA. BFlorida Museum of Natural History, University of Florida, Gainesville, FL 32611-7800, USA. CSmithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Republic of Panama. DCorresponding author. Email: [email protected] This paper is part of an ongoing series: ‘The Evolution of Plant Functions’. Abstract. Crassulacean acid metabolism (CAM) is a specialised mode of photosynthesis that improves atmospheric CO2 assimilation in water-limited terrestrial and epiphytic habitats and in CO2-limited aquatic environments. In contrast with C3 and C4 plants, CAM plants take up CO2 from the atmosphere partially or predominantly at night. CAM is taxonomically widespread among vascular plants andis present inmanysucculent species that occupy semiarid regions, as well as intropical epiphytes and in some aquatic macrophytes. This water-conserving photosynthetic pathway has evolved multiple times and is found in close to 6% of vascular plant species from at least 35 families. Although many aspects of CAM molecular biology, biochemistry and ecophysiology are well understood, relatively little is known about the evolutionary origins of CAM. This review focuses on five main topics: (1) the permutations and plasticity of CAM, (2) the requirements for CAM evolution, (3) the drivers of CAM evolution, (4) the prevalence and taxonomic distribution of CAM among vascular plants with emphasis on the Orchidaceae and (5) the molecular underpinnings of CAM evolution including circadian clock regulation of gene expression.
    [Show full text]
  • Lamiales – Synoptical Classification Vers
    Lamiales – Synoptical classification vers. 2.6.2 (in prog.) Updated: 12 April, 2016 A Synoptical Classification of the Lamiales Version 2.6.2 (This is a working document) Compiled by Richard Olmstead With the help of: D. Albach, P. Beardsley, D. Bedigian, B. Bremer, P. Cantino, J. Chau, J. L. Clark, B. Drew, P. Garnock- Jones, S. Grose (Heydler), R. Harley, H.-D. Ihlenfeldt, B. Li, L. Lohmann, S. Mathews, L. McDade, K. Müller, E. Norman, N. O’Leary, B. Oxelman, J. Reveal, R. Scotland, J. Smith, D. Tank, E. Tripp, S. Wagstaff, E. Wallander, A. Weber, A. Wolfe, A. Wortley, N. Young, M. Zjhra, and many others [estimated 25 families, 1041 genera, and ca. 21,878 species in Lamiales] The goal of this project is to produce a working infraordinal classification of the Lamiales to genus with information on distribution and species richness. All recognized taxa will be clades; adherence to Linnaean ranks is optional. Synonymy is very incomplete (comprehensive synonymy is not a goal of the project, but could be incorporated). Although I anticipate producing a publishable version of this classification at a future date, my near- term goal is to produce a web-accessible version, which will be available to the public and which will be updated regularly through input from systematists familiar with taxa within the Lamiales. For further information on the project and to provide information for future versions, please contact R. Olmstead via email at [email protected], or by regular mail at: Department of Biology, Box 355325, University of Washington, Seattle WA 98195, USA.
    [Show full text]
  • Demonstration of Commonly Suggested Shade Annual Alternatives to Garden Impatiens
    Demonstration of Commonly Suggested Shade Annual Alternatives to Garden Impatiens Nora Catlin, Floriculture Specialist, Cornell Cooperative Extension of Suffolk County A trial was established at the Long Island Horticultural Re- Plants were planted into the field under a high tunnel fitted search & Extension Center in the summer of 2013 to demon- with 50% shade cloth from June 20-25. Three plants of a strate commonly suggested shade annual alternatives to cultivar were planted in a row on 12-in centers within the garden impatiens (Impatiens walleriana). The goal of this plot, with 24 inches between plots. Each plot was replicat- trial was to serve as a resource for growers, gardeners, and ed 3 times to account for varying soil conditions or pests. landscapers seeking substitute plants for garden impatiens, The majority of the plant material was in 3- to 4-inch con- which are threatened by impatiens downy mildew. A total tainers at planting, with a few exceptions: the Coleus plants of 43 cultivars of 16 species were grown in the demonstra- were in 4-packs, and Begonia ‘Encanto Orange’ and the two tion garden (Table 1). cultivars of Caladium were in 6-in containers. 2013 Annual Shade Plant Demonstration Trial at the Long Island Horticultural Research & Extension Center. Table 1. Plants and cultivars included in the 2013 Shade Annual Demonstration Trial. Plant Cultivar Plant Material a Ajuga (Ajuga reptans) ‘Burgundy Glow’ V Begonia (Begonia x benariensis) ‘BIG Red w/ Bronze Leaf’ S Begonia (Begonia x benariensis) ‘BIG Red w/ Green Leaf’
    [Show full text]