Results 61 to 70 of about 47,150 (283)

The Development of Polyamines throughout Brassica rapa over its Lifecycle [PDF]

, 2014
Polyamines are naturally produced chemicals in plants involved in growth, development and stress response. The primary objective of my study is to create a profile of changes in the entire life of the plant, in every organ at all stages of development ...
Larsen, Jon, Minocha, Subhash C, Sullivan, Matthew Ryan   +2 more
core   +1 more source

Extended conformation of putrescine occurring on a center of symmetry in its 1:2 complex with malonic acid [PDF]

, 1997
The 1,4-butane diammonium (putrescine) crystalizes with propanedioic acid (malonic monoanions in space group Pcab (1,4-butane diammonium hydrogen propanedioate, C4H14N22+.2C(3)H(3)O(4)(-)).
Babu, A.M., Murthy, M.R.N., Weakley, T.J.R.   +2 more
core   +1 more source

The Application of Carbon Dots in Crops for Sustainable Agriculture

ChemistryEurope, EarlyView.
Carbon dots serve as versatile nanoagents across the crop life cycle. They promote plant growth and photosynthesis, enhance resilience to biotic and abiotic stresses, aid in postharvest preservation, and enable sensitive detection of contaminants.
Xue Li, Lei Jin, Gurpreet Singh Selopal, Federico Rosei, Jinhua Li   +4 more
wiley   +1 more source

Control of pili synthesis and putrescine homeostasis in Escherichia coli

eLife
Polyamines are biologically ubiquitous cations that bind to nucleic acids, ribosomes, and phospholipids and, thereby, modulate numerous processes, including surface motility in Escherichia coli.
Iti Mehta, Jacob B Hogins, Sydney R Hall, Gabrielle Vragel, Sankalya Ambagaspitiye, Philippe E Zimmern, Larry Reitzer   +6 more
doaj   +1 more source

The Promotive Effect of Putrescine on Growth, Biochemical Constituents, and Yield of Wheat (Triticum aestivum L.) Plants under Water Stress

Agriculture, 2023
Drought stress is a significant environmental variable affecting wheat growth and development. Plant stress tolerance is intimately related to growth regulators of plants as polyamines.
Hebat-Allah A. Hussein, Shifaa O. Alshammari, Marwa E. Abd El-Sadek, Sahar K. M. Kenawy, Ali A. Badawy   +4 more
doaj   +1 more source

Dye modification of nanofibrous silicon oxide membranes for colorimetric HCl and NH3 sensing [PDF]

, 2016
Colorimetric sensors for monitoring and visual reporting of acidic environments both in water and air are highly valuable in various fields, such as safety and technical textiles.
Breyne, Bet, Cousins, Gabriella, De Buysser, Klaartje, De Clerck, Karen, Geltmeyer, Jozefien, Hoogenboom, Richard, Lava, Kathleen, Steyaert, Iline, Vancoillie, Gertjan   +8 more
core   +1 more source

Induced‐Fit Recognition by a Calixarene–Pyrene Conjugate for Single‐ and Dual‐Wavelength Fluorescence Sensing in Water

Chemistry – A European Journal, EarlyView.
A sulfonatocalix[4]arene–pyrene conjugate functions as a fluorescence chemosensor for the optical detection of biorelevant analytes in water. Its photoinduced electron transfer (PET) response is triggered by an induced‐fit recognition mechanism. Noncovalent assembly with an additional dye affords dual‐color ratiometric signaling via competitive PET ...
Joana N. Martins, Márcia Pessêgo, Luis Garcia‐Rio, João Carlos Lima, Nuno Basílio   +4 more
wiley   +1 more source

Effects of electrostatic screening on the conformation of single DNA molecules confined in a nanochannel

, 2008
Single T4-DNA molecules were confined in rectangular-shaped channels with a depth of 300 nm and a width in the range 150-300 nm casted in a poly(dimethylsiloxane) nanofluidic chip.
Ce Zhang, de Gennes P.-G., Fang Zhang, Grosberg A. Y., Jeroen A. van Kan, Johan R. C. van der Maarel, van der Maarel J. R. C., Yamakawa H.   +7 more
core   +1 more source

Metabolite-dependent regulation of gene expression in trypanosoma brucei [PDF]

, 2013
Mechanisms regulating gene expression in trypanosomatid protozoa differ significantly from those in other eukaryotes. Transcription of the genome appears to be more or less constitutive with the polyadenylation and trans-splicing of large polycistronic ...
Archer, Batey, Besteiro, Birkholtz, Breaker, Carter, Clayton, Coustou, De Gaudenzi, Ebikeme, Fairlamb, Hendriks, Jacob, Jensen, Kabani, Lamour, Mangold, Martinez-Calvillo, Nguyen, Perez-Leal, Persson, Phillips, Stuart, Veitch, Vincent, Ward, Willert, Willert, Willert, Wirtz, Wurst, Wurst, Xiao, Xiao, Zhang   +34 more
core   +1 more source

Putrescine Uptake in Saintpaulia Petals [PDF]

Plant Physiology, 1985
Putrescine uptake and the kinetics of this uptake were studied in petals of Saintpaulia ionantha Wendl. Uptake experiments of [(3)H] or [(14)C] putrescine were done on single petals at room temperature at various pH values. The results show that putrescine uptake occurs against a concentration gradient at low external putrescine concentration (0.5-100 ...
N, Bagni, R, Pistocchi
openaire   +2 more sources