scholarly journals Design of Chitosan Sterilization Agents by a Structure Combination Strategy and Their Potential Application in Crop Protection

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3250
Author(s):  
Weixiang Liu ◽  
Yukun Qin ◽  
Pengcheng Li
Keyword(s):  
Biological Activity ◽  
Potential Application ◽  
Crop Protection ◽  
Renewable Resource ◽  
Hydroxyl Groups ◽  
Combination Strategy ◽  
Chitosan Derivatives ◽  
Novel Structure ◽  
Activity Structure ◽  
Good Biocompatibility

Chitosan is the only cationic polysaccharide in nature. It is a type of renewable resource and is abundant. It has good biocompatibility, biodegradability and biological activity. The amino and hydroxyl groups in its molecules can be modified, which enables chitosan to contain a variety of functional groups, giving it a variety of properties. In recent years, researchers have used different strategies to synthesize a variety of chitosan derivatives with novel structure and unique activity. Structure combination is one of the main strategies. Therefore, we will evaluate the synthesis and agricultural antimicrobial applications of the active chitosan derivatives structure combinations, which have not been well-summarized. In addition, the advantages, challenges and developmental prospects of agricultural antimicrobial chitosan derivatives will be discussed.

Synthesis and Biological Activity of Embelin and its Derivatives: An Overview

2020 ◽  
Vol 20 (5) ◽  
pp. 396-407 ◽  
Author(s):  
Zhaojun Sheng ◽  
Siyuan Ge ◽  
Min Gao ◽  
Rongchao Jian ◽  
Xiaole Chen ◽  
...  
Keyword(s):  
Biological Activity ◽  
Biological Effects ◽  
New Drugs ◽  
Hydroxyl Groups ◽  
Carbonyl Groups ◽  
Cellular Mechanisms ◽  
Embelia Ribes ◽  
Naturally Occurring ◽  
Ic50 Value ◽  
Apoptosis Protein

Embelin is a naturally occurring para-benzoquinone isolated from Embelia ribes (Burm. f.) of the Myrsinaceae family, and contains two carbonyl groups, a methine group and two hydroxyl groups. With embelin as the lead compound, more than one hundred derivatives have been reported. Embelin is well known for its ability to antagonize the X-linked inhibitor of apoptosis protein (XIAP) with an IC50 value of 4.1 μM. The potential of embelin and its derivatives in the treatment of various cancers has been extensively studied. In addition, these compounds display a variety of other biological effects: antimicrobial, antioxidant, analgesic, anti-inflammatory, anxiolytic and antifertility activity. This paper reviews the recent progress in the synthesis and biological activity of embelin and its derivatives. Their cellular mechanisms of action and prospects in the research and development of new drugs are also discussed.

Marine polysaccharides: green and recyclable resources as wound dressings

2021 ◽  
Author(s):  
Xiaodong Jing ◽  
Yanzhen Sun ◽  
Xiaoli Ma ◽  
Hao Hu
Keyword(s):  
Renewable Resource ◽  
Wound Dressings ◽  
Environmental Friendliness ◽  
Good Biocompatibility ◽  
Recyclable Resources ◽  
Absolute Advantage

As a green and renewable resource, marine polysaccharides have inherent nontoxicity, good biocompatibility, biodegradability, and environmental friendliness. Compared to land-based polysaccharides, marine polysaccharides occupy an absolute advantage in the process...

scholarly journals Bacterium-Mediated RNA Interference: Potential Application in Plant Protection

Plants ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 572 ◽  
Author(s):  
Simon Goodfellow ◽  
Daai Zhang ◽  
Ming-Bo Wang ◽  
Ren Zhang
Keyword(s):  
Rna Interference ◽  
Potential Application ◽  
Plant Protection ◽  
Crop Protection ◽  
Environmentally Friendly ◽  
Agricultural Pests ◽  
Promising Tool ◽  
Current State ◽  
Potential Applications

RNAi has emerged as a promising tool for targeting agricultural pests and pathogens and could provide an environmentally friendly alternative to traditional means of control. However, the deployment of this technology is still limited by a lack of suitable exogenous- or externally applied delivery mechanisms. Numerous means of overcoming this limitation are being explored. One such method, bacterium-mediated RNA interference, or bmRNAi, has been explored in other systems and shows great potential for application to agriculture. Here, we review the current state of bmRNAi, examine the technical limitations and possible improvements, and discuss its potential applications in crop protection.

Synthesis and Biological Activity of Fullerenols with Various Contents of Hydroxyl Groups

2013 ◽  
Vol 47 (2) ◽  
pp. 87-91 ◽  
Author(s):  
M. Yu. Eropkin ◽  
E. Yu. Melenevskaya ◽  
K. V. Nasonova ◽  
T. S. Bryazzhikova ◽  
E. M. Eropkina ◽  
...  
Keyword(s):  
Biological Activity ◽  
Hydroxyl Groups

scholarly journals Epimeric Mixtures of Brassinosteroid Analogs: Synthesis, Plant Growth, and Germination Effects in Tomato (Lycopersicum esculentum Mill.)

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 808
Author(s):  
Nitza Soto ◽  
César González ◽  
Marco Mellado ◽  
Andrés F. Olea ◽  
Yamilet Coll ◽  
...  
Keyword(s):  
Biological Activity ◽  
Plant Growth ◽  
Potential Application ◽  
Growth And Development ◽  
Side Chains ◽  
Lycopersicum Esculentum ◽  
Good Level ◽  
Hyodeoxycholic Acid ◽  
Pure Compounds

Brassinosteroids (BRs) play an important role in the growth and development of plants. Herein, we describe the synthesis of epimeric mixtures of BR analogs with 24-norcholane type side chains, S/R configuration at C22 and A/B ring cis-type fusion. All epimeric mixtures were synthetized from hyodeoxycholic acid. The biological activity of mixtures was evaluated by using rice lamina inclination test and germination of tomato (Lycopersicum esculentum) seeds. The results show that these epimeric mixtures exhibit similar bioactivity to brassinolide in both bioassays. Thus, our results corroborate that the A/B junction has almost no effect on bioactivity and open the possibility of using epimeric mixtures instead of pure compounds. In this approach, the synthesized BR analogs maintain a good level of bioactivity, whereas the synthesis is shorter, cheaper and with higher yields. All these factors make this alternative very interesting for potential application.

scholarly journals Bioactivity Study of the C60-L-Threonine Derivative for Potential Application in Agriculture

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Gayane G. Panova ◽  
Evgeny B. Serebryakov ◽  
Konstantin N. Semenov ◽  
Nikolay A. Charykov ◽  
Olga S. Shemchuk ◽  
...  
Keyword(s):  
Biological Activity ◽  
Plant Growth ◽  
Ultraviolet Radiation ◽  
Potential Application ◽  
Antioxidant Properties ◽  
Photosynthetic Apparatus ◽  
Stress Factors ◽  
Biological Study ◽  
Nonspecific Resistance ◽  
Pesticide Load

The present paper reports data on the biological activity of nanocompositions based on a C60-L-threonine (C60-Thr) derivative. These nanocompositions promote the nonspecific resistance of plants to the action of stress factors (ultraviolet radiation, pesticides, and phytopathogens). Additionally, we determined the perspectives of the C60-Thr adduct application in the cultivation of plants due to the decrease of the pesticide load on the environment. The biological study of C60-Thr revealed the plant growth-stimulating ability due to its influence on the photosynthetic apparatus activity and antioxidant properties.

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