Evaluation of allelopathic activity of 178 Caucasian plant species

2016 ◽  
Vol 5 (1) ◽  
pp. 75 ◽  
Author(s):  
Hossein Mardani ◽  
Elena Kazantseva ◽  
Vladimir Onipchenko ◽  
Yoshiharu Fujii
Keyword(s):  
Plant Species ◽  
Industrial Applications ◽  
Test Plant ◽  
Radicle Growth ◽  
The Caucasus ◽  
Oxalis Acetosella ◽  
Caucasus Region ◽  
Allelopathic Activity ◽  
Plant Families ◽  
Convallaria Majalis

<p>Seeking for new plant species as the main resources of bioactive chemicals is one of the fundamental steps in biological production science. The main objective of this paper was to screen for the allelopathic activity of Caucasian plant species in order to select the strongest allelopathic species for future studies. Dried leaves of 178 plant species collected from the Teberda State Reserve in the Caucasus region were assayed by the Sandwich method for allelopathic activity, using <em>Lactuca sativa</em> (lettuce) as the test plant. To evaluate allelopathic activity, standard deviation (SD) and SD of variance (SDV) of radicle growth inhibition were calculated. The highest (100%) inhibition was observed for <em>Artemisia austriaca</em> Jacquin, followed by <em>Oxalis acetosella</em> L., <em>Convallaria majalis</em> L. and <em>Polygonatum odoratum</em> (Miller). Among plant families, members of the Fabaceae caused greatest inhibition of radicle growth. Plants classified as “poisonous” had the highest allelopathic activities, followed closely by those designated “medicinal”. Results of this study will guide the identification of novel phytotoxic chemicals useful in medicinal and/or industrial applications.</p>

Allelopathic activity of the Oxalis europea L. extracts on the growth of eight test plant species

2018 ◽  
Vol 19 (2) ◽  
pp. 304
Author(s):  
Farhana Zaman ◽  
Shafiqul Islam ◽  
Hisashi Kato-Noguchi
Keyword(s):  
Plant Species ◽  
Test Plant ◽  
Allelopathic Activity

Allelopathic activity of Mexican sunflower (Tithonia diversifolia) in soil

Weed Science ◽  
1998 ◽  
Vol 46 (4) ◽  
pp. 432-437 ◽  
Author(s):  
Suthep Tongma ◽  
Katsuichiro Kobayashi ◽  
Kenji Usui
Keyword(s):  
Root Growth ◽  
Plant Species ◽  
Water Extract ◽  
Inhibitory Effect ◽  
Rice Seedling ◽  
Test Plant ◽  
Active Components ◽  
Allelopathic Activity ◽  
Phytotoxic Activity ◽  
Shoot And Root Growth

Laboratory experiments were undertaken to investigate the allelopathic activity of Mexican sunflower in soil as well as to determine the effect of several soil factors on activity. There was a decrease in shoot and root growth of the test plant species when grown in soil previously planted with Mexican sunflower. However, seed germination was not affected. Soil-water separated from the same soil also inhibited shoot and root growth. A water extract from Mexican sunflower leaves applied to soil also reduced shoot and root growth, but the degree of inhibition varied among test plant species. Incorporation of dry Mexican sunflower leaves into soil at the rate of 1 and 2% (w/w) inhibited the growth of rice seedlings. The phytotoxic activity of incorporated leaf residue diminished 4 wk after treatment of soil. The inhibitory effect of a leaf water extract in nonautoclaved soil was less than in autoclaved soil and the phytotoxic effect to rice seedling grown in autoclaved soil was less than in autoclaved sand. It is suggested that the decrease in allelopathic activity of Mexican sunflower extract and its residue in soil is due to the action of soil microorganisms and the soil adsorption of the active components.

scholarly journals Evaluation of the Allelopathic Potential of Leaf Extracts from Dischidia imbricata (Blume) Steud. on the Seedling Growth of Six Test Plants

2019 ◽  
Vol 47 (4) ◽  
pp. 1019-1024
Author(s):  
Ramida KRUMSRI ◽  
Sutjaritpan BOONMEE ◽  
Hisashi KATO-NOGUCHI
Keyword(s):  
Root Growth ◽  
Plant Species ◽  
Seedling Growth ◽  
Shoot Growth ◽  
Phleum Pratense ◽  
Italian Ryegrass ◽  
Test Plant ◽  
Herbaceous Plant ◽  
Allelopathic Potential ◽  
Allelopathic Activity

Dischidia imbricata (Blume) Steud. is a herbaceous plant belonging to the Apocynaceae family. This plant has been reported to possess various pharmacological properties, however, there has been no report related to its allelopathic properties. Therefore, the aqueous methanol extracts of D. imbricata were examined for possible allelopathic activity against the seedling growth of dicotyledonous plants; lettuce (Lactuca sativa L.), cress (Lepidium sativum L.), and alfalfa (Medicago sativa L.), and monocotyledonous plants; barnyard grass (Echinochloa crus-galli (L.) P. Beauv.), Italian ryegrass (Lolium multiflorum Lam.), and timothy (Phleum pratense L.). D. imbricata extracts exhibited a significant inhibition on the seedling growth of all the test plant species at the concentration ≥ 0.01 g dry weight equivalent extract mL-1. The seedling growth of lettuce showed the highest inhibition with D. imbricata extracts followed by alfalfa and cress, whereas the least inhibition was found on the seedling growth of timothy. Concentrations required for 50% inhibition (I50 values) of all the test plant species were in the range of 0.003 to 0.067 g D.W. equivalent extract mL-1 for shoot growth, and 0.018 to 0.026 g D.W. equivalent extract mL-1 for root growth. In addition considering the I50 values, the root growth of the test plant species was more sensitive to D. imbricata extracts than their shoot growth, except cress seedling. These results indicated that D. imbricata may possess allelopathic activity and may contain allelopathic substances.   ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 4, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********

Pemanfaatan Tumbuhan Obat Tradisional oleh Etnis Sangihe di Kepulauan Sangihe Bagian Selatan, Sulawesi Utara (The Usage of Traditional Medicinal Plants by Sangihe Ethnic in the Southern Sangihe Islands, North Sulawesi)

2018 ◽  
Vol 8 (2) ◽  
pp. 45
Author(s):  
Chrisye Yustitia Pelokang ◽  
Roni Koneri ◽  
Deidy Katili
Keyword(s):  
Medicinal Plants ◽  
Traditional Medicine ◽  
Plant Species ◽  
Structured Interviews ◽  
Active Components ◽  
Plant Materials ◽  
Medical Practitioners ◽  
North Sulawesi ◽  
Traditional Medicinal Plants ◽  
Plant Families

Abstrak Tumbuhan obat merupakan tumbuhan yang menghasilkan satu atau lebih komponen aktif yang dipercaya oleh penduduk berkhasiat obat sehingga dimanfaatkan dalam pengobatan tradisional. Penelitian ini bertujuan untuk mengidentifikasi dan mengkaji spesies tumbuhan yang digunakan sebagai obat tradisional oleh Etnis Sangihe di Kepulauan Sangihe bagian Selatan, Sulawesi Utara. Pengambilan data dilakukan melalui wawancara terstruktur  yang diajukan kepada pengobat tradisional. Hasil penelitian menunjukkan adanya 38 spesies dari 25 famili tumbuhan yang dimanfaatkan sebagai tumbuhan obat oleh Etnis Sangihe bagian Selatan. Herba merupakan habitus tumbuhan yang banyak dimanfaatkan untuk bahan pengobatan. Bagian tumbuhan yang paling banyak digunakan sebagai obat yaitu daun. Cara pengolahan yang paling banyak digunakan adalah direbus. Jenis penyakit yang dapat diobati dengan tumbuhan obat sebanyak 22 jenis penyakit. Kata kunci: tumbuhan obat, obat tradisional, habitus, Kepulauan Sangihe Bagian Selatan Abstract             Medicinal plants are plants that produce one or more active components that are believed by local people as medicinal plants for traditional medicine practices. This study aimed to identify and to assess the plant species that used as traditional medicine by the Sangihe Ethnic in the Southern Sangihe Islands, North Sulawesi. Data collection was conducted by structured interviews to the indigenous medical practitioners. The results showed that 38 plant species from 25 plant families were used as medicinal plants by the Southern Sangihe Ethnic people. Herbs were plant habitus that were widely used for medicinal ingredients. The leaves were widely used as medicinal plant materials. Boiling was the most processing method for preparing medicinal herbs. There were 22 types of diseases that could be treated using medicinal plants. Keywords: medicinal plants, traditional medicine, habitus, Southern Sangihe Islands

scholarly journals Big hitting collectors make massive and disproportionate contribution to the discovery of plant species

2012 ◽  
Vol 279 (1736) ◽  
pp. 2269-2274 ◽  
Author(s):  
Daniel P. Bebber ◽  
Mark A. Carine ◽  
Gerrit Davidse ◽  
David J. Harris ◽  
Elspeth M. Haston ◽  
...  
Keyword(s):  
Plant Species ◽  
Biological Diversity ◽  
High Rate ◽  
Type Specimens ◽  
Fundamental Goal ◽  
The World ◽  
Plant Families ◽  
The Right ◽  
Geographical Locations

Discovering biological diversity is a fundamental goal—made urgent by the alarmingly high rate of extinction. We have compiled information from more than 100 000 type specimens to quantify the role of collectors in the discovery of plant diversity. Our results show that more than half of all type specimens were collected by less than 2 per cent of collectors. This highly skewed pattern has persisted through time. We demonstrate that a number of attributes are associated with prolific plant collectors: a long career with increasing productivity and experience in several countries and plant families. These results imply that funding a small number of expert plant collectors in the right geographical locations should be an important element in any effective strategy to find undiscovered plant species and complete the inventory of the world flora.

Genotype diversity of Bacillus anthracis strains isolated from the Caucasus region

2012 ◽  
Vol 27 (2) ◽  
pp. 74-78 ◽  
Author(s):  
E. I. Eremenko ◽  
A. G. Ryazanova ◽  
O. I. Tsygankova ◽  
E. A. Tsygankova ◽  
N. P. Buravtseva ◽  
...  
Keyword(s):  
Bacillus Anthracis ◽  
The Caucasus ◽  
Caucasus Region ◽  
Genotype Diversity
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