Role of Light and Medium Composition on Growth and Valepotriate Contents in Valeriana glechomifolia Whole Plant Liquid Cultures

2006 ◽  
Vol 86 (2) ◽  
pp. 211-218 ◽  
Author(s):  
Denise Russowski ◽  
Natasha Maurmann ◽  
Sandra Beatriz Rech ◽  
Arthur Germano Fett-Neto
Keyword(s):  
Medium Composition ◽  
Liquid Cultures ◽  
Whole Plant ◽  
Role Of Light

scholarly journals Assessing the Role of Light Absorption in Laser Lithotripsy by Isotopic Substitution of Kidney Stone Materials

2020 ◽  
Vol 6 (9) ◽  
pp. 5274-5280
Author(s):  
Sorout Shalini ◽  
Derek S. Frank ◽  
Ali H. Aldoukhi ◽  
Sami E. Majdalany ◽  
William W. Roberts ◽  
...  
Keyword(s):  
Light Absorption ◽  
Kidney Stone ◽  
Laser Lithotripsy ◽  
Isotopic Substitution ◽  
Stone Materials ◽  
Role Of Light

The role of calcium in the increase in flocculence of yeast growing in the presence of copper

1965 ◽  
Vol 162 (989) ◽  
pp. 555-566 ◽  
Keyword(s):  
Liquid Medium ◽  
Cell Cultures ◽  
Chloride Solution ◽  
Liquid Copper ◽  
Acquired Resistance ◽  
Calcium Chloride Solution ◽  
Copper Resistance ◽  
Liquid Cultures ◽  
Selection Of

Growth in the presence of inhibitory concentrations of copper enhances the tendency of yeast to flocculate. Many yeasts will not flocculate unless calcium is included in the growth medium and Guinness strain 522 used in the present work required a relatively large amount. Single cell cultures may undergo variation during subculture, resulting in the production of a large number of variants (Chester 1963). The cells of these variants differ considerably in their ability to adhere together. Flocculation variants of strain 522 differed among themselves in the amount of calcium necessary for flocculation, the most flocculent variants requiring least calcium. Washed cells of the more flocculent yeasts removed more calcium from a calcium chloride solution than did those with lesser powers of adhesion. In a copper medium con­taining calcium the more flocculent variants replaced the less flocculent. Calcium protected cells from copper and the more flocculent variants enjoyed most protection. All variants acquired resistance to copper during growth in the copper medium. Despite the selection of the more flocculent yeasts during growth in liquid medium, their copper resistance was less than that of the less flocculent yeasts. When calcium was added to the liquid copper medium, cultures developed less resistance. It is concluded that the less flocculent cells, having less protection by calcium, were exposed to what was effectively a greater concentration of copper and therefore became more resistant. This greater resistance did not enable these cells to compete with the flocculent cells in liquid cultures.

Role of light-induced scattering in the optical limitation of laser radiation on the basis of fullerene-containing media

2001 ◽  
Vol 90 (2) ◽  
pp. 292-301 ◽  
Author(s):  
I. M. Belousova ◽  
V. A. Grigor’ev ◽  
O. B. Danilov ◽  
A. G. Kalintsev ◽  
A. V. Kris’ko ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Optical Limitation ◽  
Role Of Light

scholarly journals l-Aspartate: An Essential Metabolite for Plant Growth and Stress Acclimation

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1887
Author(s):  
Mei Han ◽  
Can Zhang ◽  
Peter Suglo ◽  
Shuyue Sun ◽  
Mingyao Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Physiological Role ◽  
Tca Cycle ◽  
Extensive Study ◽  
Cell Compartments ◽  
Stress Acclimation ◽  
Whole Plant ◽  
Glycolysis Pathway ◽  
Acid Pathway

L-aspartate (Asp) serves as a central building block, in addition to being a constituent of proteins, for many metabolic processes in most organisms, such as biosynthesis of other amino acids, nucleotides, nicotinamide adenine dinucleotide (NAD), the tricarboxylic acid (TCA) cycle and glycolysis pathway intermediates, and hormones, which are vital for growth and defense. In animals and humans, lines of data have proved that Asp is indispensable for cell proliferation. However, in plants, despite the extensive study of the Asp family amino acid pathway, little attention has been paid to the function of Asp through the other numerous pathways. This review aims to elucidate the most important aspects of Asp in plants, from biosynthesis to catabolism and the role of Asp and its metabolic derivatives in response to changing environmental conditions. It considers the distribution of Asp in various cell compartments and the change of Asp level, and its significance in the whole plant under various stresses. Moreover, it provides evidence of the interconnection between Asp and phytohormones, which have prominent functions in plant growth, development, and defense. The updated information will help improve our understanding of the physiological role of Asp and Asp-borne metabolic fluxes, supporting the modular operation of these networks.

The role of light intensity in mediating ascorbic acid content during postharvest tomato ripening: A transcriptomic analysis

2021 ◽  
Vol 180 ◽  
pp. 111622
Author(s):  
Yating Zhang ◽  
Nikolaos Ntagkas ◽  
Dimitrios Fanourakis ◽  
Georgios Tsaniklidis ◽  
Jiantao Zhao ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Light Intensity ◽  
Acid Content ◽  
Ascorbic Acid Content ◽  
Transcriptomic Analysis ◽  
Role Of Light

The critical role of light in moderating microbial stress due to mixtures of engineered nanomaterials

2018 ◽  
Vol 5 (1) ◽  
pp. 96-102 ◽  
Author(s):  
Carolyn M. Wilke ◽  
Jean-François Gaillard ◽  
Kimberly A. Gray
Keyword(s):  
Critical Role ◽  
Engineered Nanomaterials ◽  
Metal Nanoparticle ◽  
Toxic Effects ◽  
Solar Irradiation ◽  
Localized Surface Plasmon ◽  
E Coli ◽  
Simulated Solar Irradiation ◽  
Role Of Light

Light influences chemical interactions of engineered nanomaterials and their toxic effects. Under simulated solar irradiation, we observed that binary mixtures of n-Ag, n-Au, or n-Pt with n-TiO2cause synergistic toxic effects inE. colidue to photochemical interactions governed by metal nanoparticle stability and localized surface plasmon resonance.

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