Seed physiology: Storage compounds, sunthesis and mobilization

1990 ◽  
Vol 79 (2) ◽  
pp. A12-A17
Keyword(s):  
Storage Compounds ◽  
Seed Physiology

scholarly journals A quantitative evaluation of computational methods to accelerate the study of alloxazine-derived electroactive compounds for energy storage

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Qi Zhang ◽  
Abhishek Khetan ◽  
Süleyman Er
Keyword(s):  
Energy Storage ◽  
Density Functional ◽  
Tight Binding ◽  
Computational Cost ◽  
Redox Potentials ◽  
Storage Compounds ◽  
Computational Screening ◽  
Chemical Descriptor ◽  
Lowest Unoccupied Molecular Orbital ◽  
Semi Empirical

AbstractAlloxazines are a promising class of organic electroactive compounds for application in aqueous redox flow batteries (ARFBs), whose redox properties need to be tuned further for higher performance. High-throughput computational screening (HTCS) enables rational and time-efficient study of energy storage compounds. We compared the performance of computational chemistry methods, including the force field based molecular mechanics, semi-empirical quantum mechanics, density functional tight binding, and density functional theory, on the basis of their accuracy and computational cost in predicting the redox potentials of alloxazines. Various energy-based descriptors, including the redox reaction energies and the frontier orbital energies of the reactant and product molecules, were considered. We found that the lowest unoccupied molecular orbital (LUMO) energy of the reactant molecules is the best performing chemical descriptor for alloxazines, which is in contrast to other classes of energy storage compounds, such as quinones that we reported earlier. Notably, we present a flexible in silico approach to accelerate both the singly and the HTCS studies, therewithal considering the level of accuracy versus measured electrochemical data, which is readily applicable for the discovery of alloxazine-derived organic compounds for energy storage in ARFBs.

Lipid storage compounds in raw activated sludge microorganisms for biofuels and oleochemicals production

RSC Advances ◽  
2012 ◽  
Vol 2 (5) ◽  
pp. 2015 ◽  
Author(s):  
Emmanuel D. Revellame ◽  
Rafael Hernandez ◽  
William French ◽  
William E. Holmes ◽  
Tracy J. Benson ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Lipid Storage ◽  
Storage Compounds

scholarly journals The National Tree Seed Centre Celebrates 40 Years

2007 ◽  
Vol 83 (5) ◽  
pp. 719-722
Author(s):  
J D Simpson ◽  
B S.P. Wang
Keyword(s):  
Seed Storage ◽  
Ex Situ ◽  
Future Research ◽  
Gene Conservation ◽  
Forest Land ◽  
Seed Physiology ◽  
Technology Research Group ◽  
Insect Attack ◽  
Tree Seed

The National Tree Seed Centre has been providing seed of known origin and quality for research for 40 years. Seed is also stored for long-term gene conservation purposes to provide a source of germplasm for future research and restoration. This is particularly important for species facing such threats as insect attack, disease, climate change, or conversion of forest land to non-forest uses. The Centre's inventory focuses on native tree and shrub species, striving to store samples from throughout their ranges. Over 26 000 seed samples have been sent to researchers in 65 countries, 70% of these samples being distributed within Canada. Seed research has always been a component of the Seed Centre's program. One notable accomplishment is the development of the Petawawa Germination Box. The Seed Centre participates in and contributes to activities of the Association of Official Seed Analysts, the International Seed Testing Association, and the IUFRO Seed Physiology and Technology Research Group. Key words: collection, dormancy, ex situ gene conservation, germination, research, seed, storage

A comparative study of C-allocation to seed storage compounds among genotypes of Indian mustard under N fertilization

2019 ◽  
Vol 25 (1) ◽  
pp. 120-130
Author(s):  
Ibandalin Mawlong ◽  
M. S. Sujith Kumar ◽  
Basant Kandpal ◽  
Om Prakash Premi ◽  
Bishal Gurung
Keyword(s):  
Comparative Study ◽  
Indian Mustard ◽  
Seed Storage ◽  
N Fertilization ◽  
Storage Compounds

scholarly journals Biological and economic values of Dipterocarpaceae, the main timber forest product of Indonesia

2021 ◽  
Vol 2 (2) ◽  
pp. 104-112
Author(s):  
Wahyu Widiyono
Keyword(s):  
Economic Value ◽  
The Philippines ◽  
Peninsular Malaysia ◽  
Forest Product ◽  
Seedling Ecology ◽  
Seed Physiology ◽  
Conservation Of Genetic Resources ◽  
Domestic Use ◽  
Root Symbiosis ◽  
Seed Handling

Dipterocarpaceae is known as a very important tree family both biologically and economically.  Its distribution around the world covers the areas of Peninsular Malaysia, the Philippines, Sumatra, Kalimantan, Java, Sulawesi, Maluku to Papua.  Dipterocarpaceae family has a high economic value, such as producing wood, balsam, resin, charcoal, fat, fruit, bark, essential oil, and camphor. Its products have very important roles for domestic use and export needs. As  representatives of Dipterocarpaceae, the economic value of Shorea Roxb. ex Gaertner f, Dipterocarpus Gaertner f, and Dryobalanops Gaertner f will be discussed. Considering the very important role of Dipterocarpaceae, both biologically and economically, it is necessary to handle it sustainably, through the following actions such as conservation of genetic resources, seed physiology, seed handling, seedling ecology, root symbiosis and nutrition, pest and disease, management of natural forest, and plantation, and also non-timber forest product from Dipterocarpaceae. Dipterocarpaceae dikenal sebagai famili pohon yang sangat penting baik secara biologis maupun ekonomis. Penyebarannya di seluruh dunia meliputi wilayah Semenanjung Malaysia, Filipina, Sumatera, Kalimantan, Jawa, Sulawesi, Maluku hingga Papua. Famili Dipterocarpaceae memiliki nilai ekonomi yang tinggi, seperti menghasilkan kayu, balsam, damar, arang, lemak, buah, kulit kayu, minyak atsiri, dan kapur barus. Produk-produknya memiliki peran yang sangat penting untuk kebutuhan domestik dan ekspor. Sebagai perwakilan Dipterocarpace, nilai ekonomi Shorea Roxb. ex Gaertner f, Dipterocarpus Gaertner f, dan Dryobalanops Gaertner f akan dibahas. Mengingat peranan Dipterocarpaceae yang sangat penting, baik secara biologis maupun ekonomis, maka perlu dilakukan penanganan secara berkelanjutan, melalui tindakan-tindakan seperti konservasi sumber daya genetik, fisiologi benih, penanganan benih, ekologi semai, simbiosis dan nutrisi akar, hama dan penyakit, pengelolaan hutan alam, dan perkebunan, serta hasil hutan bukan kayu dari Dipterocarpaceae.  

scholarly journals The signalling role of ROS in the regulation of seed germination and dormancy

2019 ◽  
Vol 476 (20) ◽  
pp. 3019-3032 ◽  
Author(s):  
Christophe Bailly
Keyword(s):  
Seed Germination ◽  
Oxygen Species ◽  
Direct Oxidation ◽  
Cellular Events ◽  
Seed Physiology ◽  
Spatiotemporal Regulation ◽  
Wide Range ◽  
Living Organisms ◽  
Hormone Signalling

Abstract Reactive oxygen species (ROS) are versatile compounds which can have toxic or signalling effects in a wide range living organisms, including seeds. They have been reported to play a pivotal role in the regulation of seed germination and dormancy but their mechanisms of action are still far from being fully understood. In this review, we sum-up the major findings that have been carried out this last decade in this field of research and which altogether shed a new light on the signalling roles of ROS in seed physiology. ROS participate in dormancy release during seed dry storage through the direct oxidation of a subset of biomolecules. During seed imbibition, the controlled generation of ROS is involved in the perception and transduction of environmental conditions that control germination. When these conditions are permissive for germination, ROS levels are maintained at a level which triggers cellular events associated with germination, such as hormone signalling. Here we propose that the spatiotemporal regulation of ROS production acts in concert with hormone signalling to regulate the cellular events involved in cell expansion associated with germination.

Polymerases for Biosynthesis of Storage Compounds

2010 ◽  
pp. 247-276
Author(s):  
Anna Bröker ◽  
Alexander Steinbüchel
Keyword(s):  
Storage Compounds
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