Interactions between hormonal and developmental signalling in the prevention of side-shoots in rose (<i>Rosa hybrida</i>L.)

Musembi, Nicodemus Ndawa; Adeya, Nicolas; Murigi, Winnie Wanjiku

doi:10.1080/14620316.2012.11512888

Cited by 3 publications

(3 citation statements)

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“…Cut flower senescence is genetically programmed and mediated via hormonal and developmental signaling therefore, vase life of cut flowers would probably be prolonged by reversing the detrimental effects of the senescence-signaling hormones (Musembi et al, 2013) and/or interupting the developmental memory (Musembi et al, 2012). Natural leaf senescence is influenced by various external (e.g.…”

Section: Introductionmentioning

confidence: 99%

Gibberellin and polyamines in plant growth, development, and postharvest senescence of ornamental plants – a review

Amorim¹,

Medeiros²,

Oliveira³

et al. 2017

Amaz. Jour. of Plant Resear.

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The polyamines, putrescine, spermidine and spermine, are low-molecular weight substances, synthesized in eucariot cells from their immediate precursor, ornithine. The polyamines are found in fruits and vegetables, foods of animal origin and fermented food products. As plant growth regulators, are believed to be involved in several physiological processes. Gibberellins are plant hormones that regulate growth and influence various developmental processes and are derived via the ent-gibberellane skeleton. Gibberellins are synthesized by the terpenoid pathway in plastids and then modified in the endoplasmic reticulum and cytosol until they reach their biologically-active form. Here, we show the importance gibberellin and polyamines functions in plant growth, development, and postharvest senescence of various ornamental plants. Studies initiated on the application of the polyamines and gibberellins in ornamental plants should improve our knowledge in the future.

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Section: Introductionmentioning

confidence: 99%

Gibberellin and polyamines in plant growth, development, and postharvest senescence of ornamental plants – a review

Amorim¹,

Medeiros²,

Oliveira³

et al. 2017

Amaz. Jour. of Plant Resear.

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“…The obtained salts were solids with melting points ranging from 96 to 136 °C. The exception was the salt with the l-tryptophanate anion (5), which was a high-viscosity liquid at 25 °C. This observation allowed us to classify 1, 4, and 5 as ionic liquids (ILs).…”

Section: Synthesismentioning

confidence: 99%

“…The longevity of the leaves of many species is unsatisfactory; hence, it is necessary to carry out additional post-harvest treatments, which are designed to extend their life after cutting. Ageing is closely associated with the action of growth regulators that accelerate (ethylene, abscisic acid) or delay (cytokinins, gibberellins) this process [3][4][5][6][7][8]. In the case of leaves, compounds from the cytokinin and gibberellin groups play a special role as they inhibit the degradation of proteins and chlorophyll, which directly contributes to delaying the ageing processes [9,10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of bio-based quaternary ammonium salts with gibberellate or l-tryptophanate anion

et al. 2020

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Numerous biologically active acids can be transformed into an ionic form in a facile way and combined with appropriate quaternary ammonium cation to improve their application properties or biological activity. This study describes the synthesis of new quaternary ammonium salts with anions of gibberellic acid, a common plant growth regulator from the gibberellin group, or l-tryptophan, an important precursor of auxin biosynthesis. The surface-active tetrapentylammonium ion and natural substances such as acetylcholine, choline, and quinine were the sources of cations. Novel salts of gibberellic acid and l-tryptophan were obtained with high yields exceeding 97% as a result of the metathesis reaction or the neutralization of quaternary ammonium hydroxides. Phase transition temperatures, thermal and chemical stability, and solubility in solvents with different polarities were determined for all obtained salts. On the basis of studies regarding the influence of synthesized salts on the post-harvest longevity and quality of leaves of Convallaria majalis, it was established that the biological activity of the natural plant regulators in most cases was maintained. Therefore, it can be concluded that the conversion of the active substance into the form of a quaternary ammonium salt results in obtaining novel forms of plant growth regulators with favourable physicochemical properties while maintaining the efficacy of the biological active ingredients. Graphic abstract

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The Vase Life of the Leaves of Selected Perennial Species after the Application of Growth Regulators

2022

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The aim of the study was to assess the post-harvest life of the leaves of Hemerocallis × hybrida ‘Agata’, Limonium latifolium, and Heuchera hybrida ‘Chocolate Ruffles’ after the application of growth regulators from the group of gibberellins (GAs) and cytokinins (CKs), ionic liquids (2-hydroxyethyl)dimethylethylammonium gibberellinate [Chol][Gib] and acetylcholine gibberellinate [Gib][Ach]), as well as quaternary ammonium salts with the gibberellinate anion (1-ethyl quinine gibberellinate [Q-C2][Gib]) and 1-dodecyl acetylcholine gibberellinate [Q-C12][Gib]). The leaves were conditioned for 4 h in aqueous solutions of benzyladenine (BA), meta-methoxytopolin (MemT) and its riboside (MemTR), gibberellic acid (GA3), [Q-C2][Gib], [Gib][Ach], [Chol][Gib], and [Q-C12][Gib] at concentrations of 50 and 100 mg·dm−3. Conditioning of Hemerocallis × hybrida ‘Agata’ with MemT and [Chol][Gib] at both concentrations, [Q-C2][Gib] (100 mg·dm−3) and [Gib][Ach] (50 mg·dm−3), extended the vase life of the leaves by 7–9 days. The application of [Gib][Ach] (50 and 100 mg·dm−3) and [Q-C12][Gib] (100 mg·dm−3) resulted in the longest vase life of the leaves of Limonium latifolium. Conditioning of the leaves of Heuchera hybrida ‘Chocolate Ruffles’ with BA, MemT, and MemTR (50 and 100 mg·dm−3) extended their vase life by 9.5–51.3 days. BA at a concentration of 100 mg·dm−3 was the most effective. MemT (50 mg·dm−3), MemTR (100 mg·dm−3), [Q-C2][Gib] (100 mg·dm−3), [Gib][Ach] (100 mg·dm−3), and [Chol][Gib] (50 mg·dm−3) inhibited the degradation of proteins in the leaves of Hemerocallis × hybrida ‘Agata’; [Chol][Gib] (50 and 100 mg·dm−3)—in the leaves of Limonium latifolium; all the conditioners except for BA—in the leaves of Heuchera hybrida ‘Chocolate Ruffles’. GA3, MemTR, [Gib][Ach], [Q-C12][Gib] at both concentrations, [Q-C2][Gib], and [Chol][Gib] (50 mg·dm−3) inhibited the degradation of chlorophyll in the leaves of Hemerocallis × hybrida ‘Agata’. All conditioners except for [Gib][Ach] and [Q-C12][Gib] inhibited chlorophyll degradation in the leaves of Limonium latifolium. All conditioners except for MemT and MemTR (50 mg·dm−3) inhibited chlorophyll degradation in the leaves of Heuchera hybrida ‘Chocolate Ruffles’. [Chol][Gib] (50 mg·dm−3) was the most effective.

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Interactions between hormonal and developmental signalling in the prevention of side-shoots in rose (Rosa hybridaL.)

Cited by 3 publications

References 0 publications

Gibberellin and polyamines in plant growth, development, and postharvest senescence of ornamental plants – a review

Gibberellin and polyamines in plant growth, development, and postharvest senescence of ornamental plants – a review

Synthesis and characterization of bio-based quaternary ammonium salts with gibberellate or l-tryptophanate anion

The Vase Life of the Leaves of Selected Perennial Species after the Application of Growth Regulators

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