scholarly journals An assessment of the population status of the threatened medicinal plant Illicium griffithii Hook.f. & Thomson in West Kameng District of Arunachal Pradesh, India

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Tashi Dorjee Bapu ◽  
Gibji Nimasow

Illicium griffithii Hook.f. & Thomson, a medicinal plant of the family Schisandraceae, is an Endangered species listed by the IUCN.  A decline in population of this plant due to climate change as well as increasing human influences on the natural resources has been a matter of great concern among the researchers.  In order to estimate the existing population of this plant, a field-based study employing linear transect method was conducted in four phases, May–June 2017, May–June 2018, April–May 2019, October–November 2019 covering an area of 700km² (approx.) in West Kameng District of Arunachal Pradesh that lies within the Himalayan biodiversity hotspot.  The study recorded 3,044 live individuals of I. griffithii including 1,372 seedlings, 1,358 saplings, and only 314 mature trees.  Additionally, 126 dead trees were also recorded.  The study confirmed that the plant has a good regeneration rate but with a poor survival rate of saplings.  Besides, large-scale collection of its fruits for trade and anthropogenic disturbances in the study area appears to be the major threat to its existing population.  Therefore, proper training of the local people on large-scale cultivation of this plant together with awareness towards judicious harvesting of fruits from the wild may be the significant approach to conservation. 

2020 ◽  
Author(s):  
Daniela Porras–Flórez ◽  
Sofía Albesiano ◽  
Kendry Hernández–Herrera ◽  
Nubia Gómez–Velázco ◽  
Leopoldo Arrieta–Violet

AbstractTaxa of the family Cactaceae presents morphological and reproductive characteristics, which are used by rural communities in arid and semi-arid areas, for food, medicinal and ornamental purposes. The objectives were to identify the most used species and to relate the socioeconomic factors of the informants with their knowledge of the species. To this end, 262 semi-structured interviews were applied, with questions such as name, age, gender, educational level, source of employment, among others; eight categories of use were established: agro-ecological, agricultural, commercial, environmental service, food, medicinal, ornamental and technological; three indexes were calculated, relative importance, the value of use for each of the species and wealth of knowledge of the interviewees. Nine species are reported, from which eight are used as food and ornamental, standing out Opuntia ficus-indica for its diversity of uses, while Cylindropuntia tunicata does not report any utility. Variables such as age and residence time showed a significant relationship with the number of plants used by the interviewees. It is expected to contribute to the preservation of cacti, local knowledge and encourage large-scale cultivation since species such as Mammillaria columbiana, Melocactus andinus, and Melocactus curvispinus are being used in an unsustainable way, which could cause their local extinction.


2018 ◽  
pp. 235-245 ◽  
Author(s):  
Людмила (Lyudmila) Ивановна (Ivanovna) Тихомирова (Tikhomirova) ◽  
Наталья (Natal'ya) Григорьевна (Grigor'yevna) Базарнова (Bazarnova) ◽  
Татьяна (Tat'yana) Николаевна (Nikolayevna) Ильичева (Ilicheva) ◽  
Юрий (Yuriy) Цатурович (Tsaturovich) Мартиросян (Martirosian) ◽  
Ирина (Irina) Владимировна (Vladimirovna) Афанасенкова (Afanasenkova)

Methods of biotechnology allow to obtain high-quality medicinal plant raw materials in a short time, in large quantities without destroying natural reserves. Biotechnological approaches such as aeroponic technologies have the potential for large-scale cultivation of iris plants and production of secondary metabolites. Microclonal reproduction makes it possible to obtain a healthy planting material in the required amount, regardless of the time of year. The combination of these two technological approaches will allow to develop biotechnology of year-round production of medicinal plant raw materials of Siberian iris. The study determined the content of 6-benzylaminopurine on the stage actually micropropagation for the formation of the greatest number of adventitious shoots of optimal length. The required content of BAP in the nutrient medium for I. sibirica was 2.5–5.0 µM. The introduction of cytokinins in the nutrient medium together with auxins, L-glutamine and adenine sulfate 100 mg/l, as well as the alternation of low and high concentrations of cytokinin enhanced the regenerative effect of BAP. With year-round cultivation of regenerative plants in aeroponic conditions, the amount of biomass of plant raw materials I. sibirica for this method was about 31.2 kg / m2 of crude weight in one year. It is established that intact plants and regenerative plants I. sibirica, obtained on the basis of the developed biotechnology, had identical group composition of biologically active substances. It is revealed that the sum of flavonoids in the leaves of hydroponic iris plants exceeded the content in the leaves of intact plants by 3 times, and the content of essential oil in regenerate plants and hydroponic leaves of the Sterch variety but higher by 26% compared with the leaves of intact plants. Aqueous and alcoholic extracts of I. sibirica showed antiviral activity against herpes virus. With low toxicity, both intact plants and regenerative plants had a relatively high selectivity index.


1989 ◽  
pp. 105-108
Author(s):  
V. Oravec ◽  
I. Buben ◽  
P. Cernaj ◽  
M. Repcák ◽  
R. Honcariv

Author(s):  
Shailja Choudhary ◽  
Hemlata Kaurav ◽  
Gitika Chaudhary

Embelia ribes is commonly known as vaibidang or false black pepper is a significant medicinal plant that belongs to the family Myrsinaceae. The ancient Ayurveda physician, Sushruta described that the fruit of E. ribes plant possesses anthelmintic property and is used as a tonic along with the licorice root, which prevents aging and helps in strengthening the body. The fruit of the plant is used in various ayurvedic formulations where it is used as a carminative, anthelmintic, alterative and as stimulant. Due to the overexploitation of the plant, it is considered a threatened medicinal plant. Traditionally, the plant is used as an analgesic, antibacterial, antipyretic, antifertility and anthelmintic agent. Various parts of the plant like roots, berries and leaves of E. ribes plant are used in different herbal formulations. In Ayurveda, it is used to cure skin diseases, abdominal pains, flatulence, worms, mental disorders, tumors, bronchitis, jaundice, cardio disorders and is used as a brain tonic. Embelin is considered as the major chemical constituent isolated from the Embelia ribes plant. In this review, a brief view of the plant is briefly described related to its ayurvedic and folk uses. The reported pharmacological properties of the plant are also defined.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Raviraja Shetty G.

Embelia ribes Burm f. a medicinal woody climber belongs to the Myrsinaceae family. It is also commonly known as false black pepper or vidanga. E. ribes is one of the 32 medicinal plant species identified by the Medicinal Board, Govt. of India, New Delhi, as being important for large-scale cultivation because of its commercial use. It is an endangered medicinal plant valued for its digestive, thermogenic, carminative, depurative, anthelmintic and laxative property since time immemorial. It is also used in the treatment of tumours, asthma, bronchitis, diabetes, heart related problems, nerval disorders, cancerous tumors and liver disorders. E. ribes contain quinine derivative Embelin which has various pharmacological and medicinal properties. It helps to bring a medicinal plants revolution in our country good health and prosperity to people.


Author(s):  
Tu Bao Ngan ◽  
Nguyen Quang Hieu ◽  
Nguyen Tien Hiep ◽  
Phan Ke Long ◽  
Nguyen Trung Thanh

Michelia citrata is one of threatened species in Vietnam. It grows in subtropical evergreen broadleaved and coniferous forests at elevations higher than 1000m in Ha Giang province. In Cao Ta Tung forest, Quan Ba district, Ha Giang province, the distribution of 33 individuals of Michelia citrata is scattered with low regeneration rate and mature trees threatened by firewood and planting Cardamom. Keywords Magnoliaceae, Michelia citrata, Ha Giang, Vietnam References [1]. Malin Rivers, Emily Beech, Lydia Murphy and Sara Oldfield, The Red list of Magnoliaceae, revised and extended, BGCI, Richmond, UK, 2016.[2]. Vu Quang Nam, Taxonomic Revision of the Family Magnoliaceae from Vietnam, Thesis of Doctorate, Graduate University of The Chinese Academy of Sciences. Guangzhou, 2011.[3]. Từ Bảo Ngân, Nghiên cứu sự phân bố, sinh thái, sinh học và hiện trạng bảo tồn của loài Giổi chanh (Michelia citrata (Noot. & Chalermglin) Q. N. Vu & N. H. Xia) tại xã Tùng Vài, huyện Quản Bạ, tỉnh Hà Giang, Luận văn Thạc sĩ, Trường Đại học Khoa học Tự nhiên, ĐHQGHN, 2014.[4]. Chalermglin P. and H. P. Nooteboom, A new species of and a new combination in Magnolia (Magnoliaceae), Blumea, 52, 2007: 559-562.[5]. Nguyễn Quang Hiếu, Nguyễn Tiến Hiệp, Từ Bảo Ngân, Nguyễn Sinh Khang, Kết quả nghiên cứu bước đầu về thành phần loài thuộc họ Ngọc lan (Magnoliaceae Juss.) tại tỉnh Hà Giang và đánh giá tình trạng bảo tồn của chúng, Hội nghị Khoa học toàn quốc lần thứ sáu về Sinh thái và Tài nguyên sinh vật, Viện Sinh thái và Tài nguyên sinh vật, Hà Nội, 2015: 130-136.[6]. Vũ Quang Nam, Xia Nianhe, Bổ sung loài Michelia citrata (Noot. & Chalermglin) Q. N. Vu & N. H. Xia (họ Mộc lan - Magnoliaceae Juss.) cho hệ thực vật Việt Nam, Tạp chí sinh học, 33(4), 2011: 42-44.[7]. Nooteboom H. P. and P. Chalermglin, The Magnoliaceae of Thailand, Thai For. Bull. (Bot.). 37, 2009, 121.[8]. Nguyễn Nghĩa Thìn, Các phương pháp nghiên cứu thực vật, NXB Đại học Quốc gia Hà Nội, Hà Nội, 2007.[9]. UBND tỉnh Hà Giang, Báo cáo tổng hợp Quy hoạch bảo tồn Đa dạng sinh học tỉnh Hà Giang đến năm 2020, định hướng đến năm 2030” kèm theo QĐ số 1589/QĐ-UBND ngày 27/8/2015 của UBND tỉnh Hà Giang về việc Phê duyệt Quy hoạch bảo tồn Đa dạng sinh học tỉnh Hà Giang đến năm 2020, định hướng đến năm 2030, 2015.


1996 ◽  
Vol 5 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Chris Halpin ◽  
Barbara Herrmann ◽  
Margaret Whearty

The family described in this article provides an unusual opportunity to relate findings from genetic, histological, electrophysiological, psychophysical, and rehabilitative investigation. Although the total number evaluated is large (49), the known, living affected population is smaller (14), and these are spread from age 20 to age 59. As a result, the findings described above are those of a large-scale case study. Clearly, more data will be available through longitudinal study of the individuals documented in the course of this investigation but, given the slow nature of the progression in this disease, such studies will be undertaken after an interval of several years. The general picture presented to the audiologist who must rehabilitate these cases is that of a progressive cochlear degeneration that affects only thresholds at first, and then rapidly diminishes speech intelligibility. The expected result is that, after normal language development, the patient may accept hearing aids well, encouraged by the support of the family. Performance and satisfaction with the hearing aids is good, until the onset of the speech intelligibility loss, at which time the patient will encounter serious difficulties and may reject hearing aids as unhelpful. As the histological and electrophysiological results indicate, however, the eighth nerve remains viable, especially in the younger affected members, and success with cochlear implantation may be expected. Audiologic counseling efforts are aided by the presence of role models and support from the other affected members of the family. Speech-language pathology services were not considered important by the members of this family since their speech production developed normally and has remained very good. Self-correction of speech was supported by hearing aids and cochlear implants (Case 5’s speech production was documented in Perkell, Lane, Svirsky, & Webster, 1992). These patients received genetic counseling and, due to the high penetrance of the disease, exhibited serious concerns regarding future generations and the hope of a cure.


1969 ◽  
Vol 08 (01) ◽  
pp. 07-11 ◽  
Author(s):  
H. B. Newcombe

Methods are described for deriving personal and family histories of birth, marriage, procreation, ill health and death, for large populations, from existing civil registrations of vital events and the routine records of ill health. Computers have been used to group together and »link« the separately derived records pertaining to successive events in the lives of the same individuals and families, rapidly and on a large scale. Most of the records employed are already available as machine readable punchcards and magnetic tapes, for statistical and administrative purposes, and only minor modifications have been made to the manner in which these are produced.As applied to the population of the Canadian province of British Columbia (currently about 2 million people) these methods have already yielded substantial information on the risks of disease: a) in the population, b) in relation to various parental characteristics, and c) as correlated with previous occurrences in the family histories.


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