1-Naphthylacetic acid slow release polymeric formulations: auxin type effect in tobacco leaf segments is affected by structure and hydrolysis

doi:10.1007/BF00024177

Paper

DOI: 10.1007/BF00024177

1-Naphthylacetic acid slow release polymeric formulations: auxin type effect in tobacco leaf segments is affected by structure and hydrolysis

Published Sep 1, 1995 · A. Tsatsakis, K. N. Paritsis, M. Shtilman

Plant Growth Regulation

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Abstract

New slow release formulations (SRF) of 1-naphthylacetic acid (NAA) were synthesised and the expression of their auxin-like activity was examined by studying their effect in inducing callus formation and organogenesis in leaf segments of tobacco. The SRF were water-soluble copolymers of acrylamide containing side-linkages with NAA, the latter being released during hydrolysis (cleavage of chemical bond). Callus formation was assessed by fresh weight measurements and that of organogenesis, morphologically A shift of the effective (optimal) concentrations to higher values was noticed when increasing the polymer molecular weight or the content of NAA in the polymeric formulations. The relationship between polymer structure, hydrolysis rate and the biological effect was obvious.

Study Snapshot

Slow release formulations of 1-naphthylacetic acid (NAA) can induce callus formation and organogenesis in tobacco leaf segments, with optimal concentrations shifting to higher values when increasing polymer molecular weight or NAA content.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

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References

DOI: 10.1021/MA00046A038

Hydrophobically-modified poly(N-isopropylacrylamides) in water: probing of the microdomain composition by nonradiative energy transfer

The copolymers form polymeric micellar structures in water, with interpolymeric micelles present and their microdomain composition determined by nonradiative energy transfer.

1992·84citations·H. Ringsdorf et al.·Macromolecules

Macromolecules

DOI: 10.1021/MA00009A042

Water-soluble copolymers. 36. Photophysical investigations of water-soluble copolymers of 2-(1-naphthylacetamido)ethylacrylamide

Hydrophobic interactions among naphthyl chromophores cause intramolecular "hypercoil" formation at high pH, leading to increased excimer emission relative to monomer emission.

1991·18citations·C. McCormick et al.·Macromolecules

Macromolecules

DOI: 10.1016/0168-3659(88)90001-6

Controlled activity polymers. VI: Acrylamide copolymers with structopendent naphthylacetic acid and indoleacetic acid esters: Synthesis and characterization

Acrylamide copolymers with structopendent naphthylacetic acid and indoleacetic acid esters show random copolymerization behavior and can be used for controlled activity polymers.

1988·16citations·C. McCormick et al.·Journal of Controlled Release

Journal of Controlled Release

DOI: 10.1016/0168-3659(88)90002-8

Controlled activity polymers. VII: Acrylamide copolymers with structopendent naphthylacetic acid and indoleacetic acid esters: Release behavior

Increasing the mean sequence lengths of hydrophilic sections in acrylamide copolymers with plant growth regulator esters leads to higher rates of hydrolytic release.

1988·19citations·C. McCormick et al.·Journal of Controlled Release

Journal of Controlled Release

DOI: 10.1007/978-3-642-68204-9

Plant Growth Regulators: Agricultural Uses

Plant growth regulators can enhance crop growth, resistance to insects and diseases, and adapt to environmental stress, improving plant composition, metabolism, and yield.

1981·511citations·L. G. Nickell

DOI: 10.1002/APMC.1978.050660101

Über die copolymerisation von acrylamid mit vinylestern der 2,4-dichlorphenoxyessigsäure und 2,4-dichlorphenoxybuttersäure

Copolymers with prolonged growth regulating activity for agriculture were successfully prepared by copolymerizing acrylamide with vinyl esters of 2,4-dichlorophenoxy acetic acid and 2,4-dichlorophenoxy butyric acid.

1978·5citations·M. Georgieva et al.·Angewandte Makromolekulare Chemie

Angewandte Makromolekulare Chemie

DOI: 10.1038/237349A0

Sexual Selections by Variations in Fitness at Breeding Time

Sexual selection involves males with traits that improve their chances of mating and females with preferences for certain male characteristics, leading to rapid evolution of both male and female traits.

1972·41citations·P. O'donald·Nature

Nature

Citations

DOI: 10.1016/j.carbpol.2013.06.046

A facile one-pot synthesis of a fluorescent agarose-O-naphthylacetyl adduct with slow release properties.

This study presents a facile one-pot synthesis of NA-agarose, a fluorescent polymer with potential utility as a sustained release plant growth regulator and sensory application.

2013·12citations·Stalin Kondaveeti et al.·Carbohydrate polymers

Carbohydrate polymers

DOI: 10.1002/APP.38656

1‐naphthylacetic‐acid‐functionalized polyacrylate‐coated urea with dual controlled‐release properties

The developed dual controlled-release formulation can effectively release urea and NAA from coated fertilizers, providing a long-lasting, controlled-release solution for agricultural applications.

2013·15citations·Xiaoyun Qiu et al.·Journal of Applied Polymer Science

Journal of Applied Polymer Science

DOI: 10.1016/J.CARBPOL.2012.01.076

Synthesis, characterization and slow release properties of O-naphthylacetyl chitosan

NA-chitosan has a slow release of 1-naphthylacetic acid, with a release period of 55 days at pH 12.0, 60°C.

2012·49citations·Shuming Tao et al.·Carbohydrate Polymers

Carbohydrate Polymers

DOI: 10.1007/s00604-011-0732-y

Chitosan microspheres for controlled delivery of auxins as agrochemicals

Chitosan microspheres effectively encapsulate and release two auxins, naphthalene-1-acetic acid and indole-3-acetic acid, into plants through a super Case-II transport scheme.

2012·28citations·Ling Fan et al.·Microchimica Acta

Microchimica Acta

DOI: 10.1016/J.SCIENTA.2010.11.015

Micropropagation of dahlia in static liquid medium using slow-release tools of medium ingredients

Dahlia shoot growth in vitro is significantly faster in liquid medium using slow-release tools, with extra ingredients added during the subculture cycle for optimal results.

2011·23citations·G. Klerk et al.·Scientia Horticulturae

Scientia Horticulturae

DOI: 10.1002/JCCS.200700109

Synthesis and Characterization of Poly(Biphenyl‐2‐yl p‐Styrenesulphonate) as Profungicide in Controlled Release Technique

Poly(Biphenyl-2-yl p-Styrenesulphonate) is a new fungicide controlled release formulation with release rates strongly dependent on medium pH and temperature.

2007·1citation·A. Khazaei et al.·Journal of The Chinese Chemical Society

Journal of The Chinese Chemical Society

DOI: 10.1007/s00344-006-0002-0

Correlation between Plant Growth Regulator Release Rate and Bioactivity for the Series of Newly Synthesized Phytoactive Polymers

Phytoactive polymers' bioactivity depends on their hydrolytic release rate, which is influenced by molecular weight, side group structure, and 2,4-D residue content, and can either stimulate or inhibit plant growth.

2006·4citations·M. Shtilman et al.·Journal of Plant Growth Regulation

Journal of Plant Growth Regulation

DOI:

Micropropagation of Alstroemeria in liquid medium using slow release of medium components

Alstroemeria rhizomes thrive in liquid medium with slow-release tools, and using 6-benzylaminopurine (BAP) stimulates lateral rhizome growth.

2010·4citations·G. Klerk et al.·Propagation of Ornamental Plants

Propagation of Ornamental Plants