Diverse large lepidopteran pollinators promote the naturalisation of Crinum asiaticum in invaded and disturbed habitats, despite apparent floral specialisation

2021 ◽  
Vol 307 (2) ◽  
Author(s):  
Yang Huang ◽  
Lan-Ying Liu ◽  
Chang-Qiu Liu ◽  
Qing-Biao Lu ◽  
Qiang-Bang Gong ◽  
...  
Keyword(s):  
Disturbed Habitats ◽  
Crinum Asiaticum

scholarly journals Antibacterial, Antioxidant and Cytotoxic Properties of Crinum asiaticum Bulb Extract

2012 ◽  
Vol 28 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Md Atiar Rahman ◽  
Rumana Sharmin ◽  
Md Nazim Uddin ◽  
Md Sohel Rana ◽  
Nazim Uddin Ahmed
Keyword(s):  
Radical Scavenging ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Scavenging Effect ◽  
Ic50 Value ◽  
Radical Scavenging Effect ◽  
Dpph Scavenging ◽  
Crinum Asiaticum

Antibacterial effect of Crinum asiaticum bulb extract (1mg/disc) was tested on four Gram- positive and six Gram-negative bacteria by disc diffusion method using kanamycin (30 ìg/disc) as standard antibiotic disc. The bulb extract (250-1000mg/disc) showed significant zone of inhibition against all Gram-positive and Gram-negative bacteria ranging from 12-14 mm in diameter. Antioxidant potential of the same extract was evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging method. The extract showed remarkable free radical scavenging effect (95.96%) providing the IC50 value of 5.62 for the bulb extract and 5.46 for ascorbic acid (standard antioxidant) at the concentration of 1000 ìg/ml. The bulb extract was found to be (LC50 value 94.06 ?g/ml) in Brine-Shrimp lethality test. DOI: http://dx.doi.org/10.3329/bjm.v28i1.11801 Bangladesh J Microbiol, Volume 28, Number 1, June 2011, pp 1-5

scholarly journals The alien flora of Sudan and South Sudan: taxonomic and biogeographical composition

2021 ◽  
Author(s):  
Ali Omer ◽  
Maha Kordofani ◽  
Haytham H. Gibreel ◽  
Petr Pyšek ◽  
Mark van Kleunen
Keyword(s):  
Alien Species ◽  
South Sudan ◽  
Plant Invasions ◽  
Life Forms ◽  
Alien Plants ◽  
African Countries ◽  
Alien Flora ◽  
Result Show ◽  
Perennial Herbs ◽  
Disturbed Habitats

AbstractStudies on plant invasions depend on local and regional checklists of the alien flora. However, global overview studies have shown that some regions, including many African countries, remain understudied in this regard. To contribute to filling this gap, here we present the first checklist of alien plants of Sudan and South Sudan (the Sudans). We analysed the taxonomic and geographical composition of the species on this list. Our result show that of the 113 alien species in Sudans (99 in Sudan and 59 in South Sudan), 92 (81.4%) are naturalized and 21 (18.6%) are just casual aliens. The number of naturalized species represent 2.2% of the total flora of the Sudans (4096). The alien species belong to 44 families and 85 genera, and many of them are native to Southern America and Northern America (85.8%). Annual and perennial herbs are the prevailing life forms in the alien flora of the Sudans (68.1%), and, among the casual species, perennial herbs are underrepresented whereas woody tree species are over-represented. Alien plants of the Sudans are mostly used for medicinal and environmental purposes globally. The naturalized plants predominantly occur in man-made disturbed habitats, such as agricultural and ruderal habitats. This first overview of the alien flora of the Sudans should stimulate further research and recording of the alien flora to better understand the drivers and consequences of alien plants in the Sudans.

ChemInform Abstract: Cytotoxic Alkaloids and a Flavan from the Bulbs of Crinum asiaticum var. japonicum.

ChemInform ◽  
2010 ◽  
Vol 33 (7) ◽  
pp. no-no
Author(s):  
Byung Sun Min ◽  
Jiang Jing Gao ◽  
Norio Nakamura ◽  
Young Ho Kim ◽  
Masao Hattori
Keyword(s):  
Crinum Asiaticum

Molecular cloning and characterization of a mannose-binding lectin gene from Crinum asiaticum

2003 ◽  
Vol 160 (8) ◽  
pp. 913-920 ◽  
Author(s):  
Yourong Chai ◽  
Yongzhen Pang ◽  
Zhihua Liao ◽  
L.e.i. Zhang ◽  
Xiaofen Sun ◽  
...  
Keyword(s):  
Molecular Cloning ◽  
Mannose Binding Lectin ◽  
Lectin Gene ◽  
Mannose Binding ◽  
Crinum Asiaticum ◽  
Binding Lectin

Biological invasions: are they dependent on disturbance?

1997 ◽  
Vol 5 (2) ◽  
pp. 131-144 ◽  
Author(s):  
J D Lozon ◽  
H J MacIsaac
Keyword(s):  
Exotic Species ◽  
Human Activities ◽  
Water Discharge ◽  
A Priori ◽  
Terrestrial Ecosystems ◽  
Field Studies ◽  
Soil Disturbance ◽  
Exotic Animals ◽  
Introduced Plants ◽  
Disturbed Habitats

We utilize literature surveys to examine the relationship between establishment of exotic species and human or natural disturbances of ecosystems. Of the 133 papers published in 10 ecological journals between 1993 and 1995, 63 reported on field studies involving 299 and 103 successful, nonredundant plant and animal introductions, respectively. Invasions of terrestrial ecosystems dominated (>>97%) the surveyed literature. Disturbance was associated with establishment of exotic species in 56% of these studies, though its importance differed among papers describing plants (68%) and animals (28%). Plants species (86%) were significantly more dependent on disturbance for establishment than were animals (12%). However, animals and plants that were dependent on disturbance for establishment were almost equally dependent (58 versus 68%) on it for range expansion. In a second survey, 402 plant and 103 animal taxa were identified that explicitly linked establishment of exotic species to disturbance. Human activities were attributed with establishment of species in 97 and 57% of these cases, respectively. Common mechanisms associated with establishment of exotic animals included ballast water discharge, intentional releases, and residential development. Establishment of exotic plants was associated with animal activities (e.g., grazing, seed introduction), soil disturbance, forestry, fire, agriculture, and human activities. In contrast to invasions theory, our survey indicates that the association between establishment and spread of exotic species and disturbance ought not be assumed a priori. Some animals repeatedly invade new habitats once geographic barriers are circumvented, indicating that communities may be more receptive to exotic species than previously acknowledged. By contrast, introduced plants established most often in disturbed habitats.

Contrasting effects of fire on populations of two small rodent species in fragments of Atlantic Forest in Brazil

2004 ◽  
Vol 20 (2) ◽  
pp. 225-228 ◽  
Author(s):  
Marcos de Souza Lima Figueiredo ◽  
Fernando Antonio dos Santos Fernandez
Keyword(s):  
Atlantic Forest ◽  
Feedback System ◽  
Rodent Species ◽  
Primary Forest ◽  
Small Rodent ◽  
Forest Species ◽  
The Core ◽  
Higher Temperature ◽  
Disturbed Habitats

Habitat fragmentation causes a sharp increase in the forested area affected by edge effects (Murcia 1995). Compared with the core of the forest, edges present higher litterfall rates, air and soil humidity reduction, higher temperature and increased wind incidence (Bierregaard et al. 1992, Didham & Lawton 1999, Laurance et al. 1998, Matlack 1993). These features of edges may increase the probability of fire occurrence, especially if the surrounding vegetation is composed of grasses (D'Antonio & Vitousek 1992, Freifelder et al. 1998). After a fire, the damaged edge will grow substantial amounts of herbaceous vegetation, extending the inflammable area into the forest, and thereby creating a positive feedback system of fire susceptibility and intensity (Cochrane & Schulze 1999, Cochrane et al. 1999). Fires may affect the structure and composition of the vegetation (Cochrane & Schulze 1999, Didham & Lawton 1999, Sanaiotti & Magnusson 1995), favouring, in the long-term, the dominance of the community by species characteristic of disturbed habitats and making the habitat unsuitable to primary forest species (Malcolm 1994, Possingham et al. 1994). Unfortunately, there are few studies on the effects of fires on neotropical small-mammal populations (Borchert & Hansen 1983, Ojeda 1989, Vieira & Marinho-Filho 1998). The objective of this study was to analyse the influence of a fire on populations of two rodent species, Akodon cursor (Winge) and Oecomys concolor (Wagner) in two fragments of Atlantic Forest in Brazil.

Roughing It: A Mantellid Poison Frog Shows Greater Alkaloid Diversity in Some Disturbed Habitats#

2010 ◽  
Vol 73 (3) ◽  
pp. 322-330 ◽  
Author(s):  
Nirina R. Andriamaharavo ◽  
H. Martin Garraffo ◽  
Ralph A. Saporito ◽  
John W. Daly ◽  
Christian R. Razafindrabe ◽  
...  
Keyword(s):  
Poison Frog ◽  
Disturbed Habitats

scholarly journals Efek Antiinflamasi Ekstrak Daun Bakung (Crynum Asiaticum L.) Pada Tikus Jantan Setelah Diinduksi Karagenan

2018 ◽  
Vol 13 (1) ◽  
pp. 42-48
Author(s):  
Helda Mirani ◽  
Sonlimar Mangunsong
Keyword(s):  
Crinum Asiaticum

Inflamasi merupakan respons protektif terhadap peradangan yang berhubungan  dengan peningkatan CRP. Telah dilakukan penelitian uji efek antiinflamasi ekstrak daun bakung (Crinum asiaticum L.) pada tikus putih jantan (Rattus novergicus) yang diinduksi karagenan. Penelitian ini bertujuan untuk mengevaluasi dosis ekstrak daun bakung yang menunjukan efek antiinflamasi serta mengevaluasi peningkatan kadar C-Reaktif Protein (CRP). Penelitian ini menggunakan metode eksperimental dengan hewan percobaan tikus putih jantan sebanyak 24 ekor dan dibagi menjadi 6 kelompok yaitu kelompok normal, kelompok negatif (hanya diinduksi karagenan), kelompok positif (diberi Na diklofenak), kelompok dosis I (40 mg/200 g BB), kelompok dosis II (80 mg/200 g BB), dan kelompok dosis III (160 mg/200 g BB).Hasil pengukuran kadar CRP kelompok normal (negatif), kelompok yang diinduksi karagenan (positif), kelompok yang diberi Na diklofenak (negatif), kelompok dosis I (negatif), kelompok dosis II (negatif), dan kelompok dosis III (negatif). Hasil penelitian kemudian dianalisis dengan Kruskal-Wallis menunjukan pengaruh pemberian ekstrak daun bakung yang sama secara signifikan terhadap efek antiinflamasi dan penurunan kadar CRP pada serum darah tikus putih jantan. Ekstrak daun bakung (Crinum asiaticum L.) mempunyai efek antiinflamasi dan mampu menurunkan kadar CRP pada tikus putih jantan setelah diinduksi karagenan.

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