scholarly journals Effects of Endophytic Fungus MF23 on Dendrobium nobile Lindl. in an artificial primary environment

2019 ◽  
Author(s):  
Xiaolin Xu ◽  
Qing Li ◽  
Gang Ding ◽  
Biao Li ◽  
Shunxing Guo
Keyword(s):  
Natural Environment ◽  
Endophytic Fungus ◽  
Agar Medium ◽  
Mycorrhizal Fungus ◽  
Dendrobium Nobile ◽  
Dendrobium Nobile Lindl ◽  
Post Modification ◽  
Special Meaning ◽  
Modification Enzyme

AbstractThe quality of Dendrobium nobile Lindl. is related to the endophytic fungus. It had reported that the mycorrhizal fungus MF23 helps to increase the content of dendrobine, but few studies had explained the mechanism of the phenomenon. In previous study, we verified the symbiotic mechanism of the mycorrhizal fungus MF23 with D. nobile on the agar medium. In this study, the research carried on the bark medium, nearly like the natural environment, which had special meaning because of its benefits for the widely application. As a result, it showed a significant effect especially in the later period of the cultivation, suggesting that mycorrhizal fungus MF23 had a promotion for D. nobile in the natural environment, which enabled the application of the technique in the experimental field. It also implied that post-modification enzyme genes might play an important role in stimulating biosynthesis of dendrobine.

scholarly journals Effects of the Endophytic Fungus MF23 on Dendrobium nobile Lindl. in an Artificial Primary Environment

ACS Omega ◽  
2021 ◽  
Author(s):  
Xingyue Chen ◽  
Qing Li ◽  
Xiaolin Xu ◽  
Gang Ding ◽  
Shunxing Guo ◽  
...  
Keyword(s):  
Endophytic Fungus ◽  
Dendrobium Nobile ◽  
Dendrobium Nobile Lindl

Moving to paradise for the children’s sake

2018 ◽  
Vol 15 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Mari Korpela
Keyword(s):  
Quality Of Life ◽  
Natural Environment ◽  
Moral Panic ◽  
Careful Attention ◽  
Lifestyle Choice ◽  
Transnational Mobility ◽  
Children’S Views

Increasing numbers of “Western” families spend several months a year in Goa, India, and the rest of the time in the parents’ passport countries or elsewhere. These “lifestyle migrants” are motivated by a search for “a better quality of life”, and the parents often claim that an important reason for their lifestyle choice is that it is better for the children to be in Goa, where they have enriching experiences and enjoy playing freely outdoors, in a natural environment. This article discusses parents’ and children’s views of this lifestyle. It argues that although the lifestyle sometimes causes moral panic among outsider adults who see regular transnational mobility as a sign of instability, a closer look reveals that there are various aspects of stability in the children’s lives. Paying careful attention to the parents’ and children’s own accounts, and the empirical realities of their lives, enables us to reach beyond normative judgements.

scholarly journals Cardioprotective effects of Ginsenoside compound-Mc1 and Dendrobium Nobile Lindl against myocardial infarction in an aged rat model: Involvement of TLR4/NF-κB signaling pathway

2021 ◽  
Vol 19 ◽  
pp. 205873922110005
Author(s):  
Yongle Sun ◽  
Jing Geng ◽  
Deyu Wang
Keyword(s):  
Myocardial Infarction ◽  
Combination Therapy ◽  
Infarct Size ◽  
Signaling Pathway ◽  
Left Ventricular ◽  
Male Rats ◽  
Dendrobium Nobile ◽  
Tnf Α ◽  
Cardioprotective Effects ◽  
Dendrobium Nobile Lindl

Aging is the crucial co-morbidity that prevents the full cardioprotection against myocardial ischemia/reperfusion (I/R) injury. Combination therapy as a promising strategy may overcome this clinical problem. This study aimed to investigate the cardioprotective effects of Ginsenoside compound-Mc1 (GMc1) and Dendrobium Nobile Lindl (DNL) in myocardial I/R injury and explore the involvement of the TLR4/NF-κB signaling pathway in aged rats. In vivo I/R injury and myocardial infarction was established by temporary coronary ligation in 22–24 months’ old Sprague Dawley male rats. GMc1 (10 mg/kg) and DNL (80 mg/kg) were administered intraperitoneally for 4 weeks and orally for 14 days, respectively, before I/R injury. Infarct size was measured through triphenyl-tetrazolium-chloride staining. ELISA assay was conducted to quantify the levels of cardiotroponin, and myocardial content of TNF-α and glutathione. Western blotting was employed to detect the expression of TLR4/MyD88/NF-κB proteins. GMc1 and DNL significantly reduced the infarct size to a similar extent ( p < 0.05) but their combined effect was greater than individual ones ( p < 0.01). Combination therapy significantly restored the left ventricular end-diastolic and developed pressures at the end of reperfusion as compared with the untreated group ( p < 0.01). Although the GMc1 and DNL reduced the levels of inflammatory cytokine TNF-α and increased the contents of antioxidant glutathione significantly, their individual effects on the reduction of protein expression of TLR4/MyD88/NF-κB pathway were not consistent. However, their combination could significantly reduce all parameters of this inflammatory pathway as compared to untreated I/R rats ( p < 0.001). Therefore, the combined treatment with GMc1 and DNL increased the potency of each intervention in protecting the aged hearts against I/R injury. Reduction in the activity of the TLR4/MyD88/NF-κB signaling pathway and subsequent modulation of the activity of inflammatory cytokines and endogenous antioxidants play an important role in this cardioprotection.

scholarly journals Dendrobium nobile Lindl. alkaloids alleviate Mn-induced neurotoxicity via PINK1/Parkin-mediated mitophagy in PC12 cells

2021 ◽  
Vol 26 ◽  
pp. 100877
Author(s):  
Xiaolong Fu ◽  
Shu Chen ◽  
Xueting Wang ◽  
Yanhua Shen ◽  
Ru Zeng ◽  
...  
Keyword(s):  
Pc12 Cells ◽  
Dendrobium Nobile ◽  
Dendrobium Nobile Lindl

Residential Environmental Preferences and Choice: Empirically Validating Preference Measures

1972 ◽  
Vol 4 (4) ◽  
pp. 445-458 ◽  
Author(s):  
M Menchik
Keyword(s):  
Natural Environment ◽  
Residential Choice ◽  
Lot Size ◽  
Environmental Preferences ◽  
Residential Preferences ◽  
Suburban Sprawl ◽  
Market Choice ◽  
Residential Characteristics ◽  
Spread Pattern

In order to evaluate demands for new forms of residential environments (such as cluster development rather than the spread pattern of suburban sprawl), it may be useful to deal with persons' residential preferences directly, rather than their market choice. The paper develops residential environmental preference variables from questionnaire survey data. The preferences may be considered as relative tradeoffs among the residence's accessibility, characteristics of the house and lot (for example, lot size), the quality of the natural environment, and characteristics of the non-natural environment (for example, population density). At the same time, comparable measures are devised of the characteristics of the persons' present residences—their residential choice. Principal results are that the preference and choice variables do seem useful; that preferences, thus defined, do express themselves to some extent through market choice; and that different persons do in fact prefer different residential characteristics. Preferences for different residential characteristics tend to be negatively associated, so that there are persons with strong preferences for the natural environment who are willing to sacrifice a large lot to live in a beautiful area.

How swachh (clean) is urban India today?

2021 ◽  
Author(s):  
Bhitush Lutra ◽  
◽  
Deepa Karthykeyan
Keyword(s):  
Quality Of Life ◽  
Drinking Water ◽  
Natural Environment ◽  
Public Utilities ◽  
Wide Spread ◽  
Negative Externalities ◽  
Public Supply ◽  
Urban India ◽  
Sachet Water

Where public supply has failed and made unsatisfactory progress in supplying drinking water, the private sector has readily stepped in to supply citizens with drinking water – most often to make big money. Much of the water bottling industry (i) provides a highly inelastic good, (ii) is immensely profitable and (iii) has significant negative externalities on public utilities, the natural environment and the quality of life in urban settings. The wide-spread introduction of a tax on the commercial water extraction and/or bottled or sachet water is ripe. The new mantra must not be “3Rs”, but “4Rs” – reduce, reuse, remunerate, recycle.

scholarly journals Comment on “The origin of methane in the East Siberian Arctic Shelf unraveled with triple isotope analysis” by Sapart et al. (2017)

2018 ◽  
Vol 15 (15) ◽  
pp. 4777-4779
Author(s):  
Katy J. Sparrow ◽  
John D. Kessler
Keyword(s):  
Natural Environment ◽  
Isotope Analysis ◽  
Critical Evaluation ◽  
Arctic Shelf ◽  
Anthropogenic Contamination ◽  
Sample Collection ◽  
Quality Of Data ◽  
Siberian Arctic ◽  
Systematic Methodology

Abstract. In this comment, we outline two major concerns regarding some of the key data presented in this paper. Both of these concerns are associated with the natural abundance radiocarbon-methane (14C-CH4) data. First, no systematic methodology is presented, nor previous peer-reviewed publication referenced, for how these samples were collected, prepared, and ultimately analyzed for 14C-CH4. Not only are these procedural details missing, but the critical evaluation of them using gaseous and aqueous blanks and standards was omitted although these details are essential for any reader to evaluate the quality of data and subsequent interpretations. Second, due to the lack of methodological details, the source of the sporadic anthropogenic contamination cannot be determined and thus it is premature for the authors to suggest it was in the natural environment prior to sample collection. As the natural 14C-CH4 data are necessary for the authors' stated scientific objectives of understanding the origin of methane in the East Siberian Arctic Shelf, our comment serves to highlight that the study's objectives have not been met.

scholarly journals The Conceptual vs Reality of Ecotourism Approaches and Strategies in Pangkor Island, Malaysia

2016 ◽  
Vol 10 (7) ◽  
pp. 66
Author(s):  
Seyedehelham Sadatiseyedmahalleh ◽  
Suraiyati Rahman ◽  
Badaruddin Mohamed
Keyword(s):  
Natural Environment ◽  
Tourism Development ◽  
Tourism Industry ◽  
Environmental Conservation ◽  
Environmental Practice ◽  
Protection Strategies ◽  
Planning Strategies ◽  
Ecosystem Planning ◽  
Management Approaches

<p>Small islands are seen as iconic destinations for ecotourism due to their rich natural biodiversity and spectacular surroundings. Malaysia has a substantial number of islands, numbering approximately 878 islands. Pangkor Island is a popular destination among domestic and international tourists alike. However, the tourism industry can be a double-edged sword. On one hand, tourism development can improve quality of life and economic prospects of local communities; and on the other hand, it may inflict to destruction on the island’s sensitive ecosystem. Natural environment is the core attraction for Pangkor Island. However, the extensive development undertaken to match the high intensity of tourist arrivals can lead to deleterious effect on the natural environment and diminish the overall quality of the tourists’ experience. This paper attempts to explore the dichotomy between ecotourism concept and tourism development in Pangkor by exploring protection strategies and ecotourism management approaches in relation to Pangkor Island. The findings described in this paper are based on an evaluation of the existing planning strategies concerning tourism development, environmental conservation, observation and interviews with visitors in Pangkor Island. Lack of environmental practice among tour operators has led to significant threat to the island’s ecosystem. Consequently, Pangkor Island require imperative attention in ensuring the sustainability of the ecosystem. Planning and development strategies for managing Pangkor and adjacent smaller islands need to be taken into consideration by acknowledging baseline conditions and present day realities.</p>

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