Daminozide Alters Anthocyanin Metabolism in Ray Florets of Bronze Chrysanthemum (Chrysanthemum morifolium Ramat.)

Roepke, Jonathon; Jean, Tyler; Perkel, Kayla Jane; Blom, Theo J.; Bozzo, Gale G.

doi:10.1007/s00344-012-9315-3

Cited by 13 publications

(12 citation statements)

References 20 publications

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“…Analogous results were also attained by Yoo et al (1999) and Roepke et al (2013) on chrysanthemums, Auda et al (2002) on Barleria cristata, Li (2013) on Achillea, Ismael et al (2013) on verbena and Pethybridge et al (2014) on Pyrethrum.…”

Section: -Chemical Compositionsupporting

confidence: 64%

“…naktongense treated with daminozide, Million et al (1999) on Begonia semperflorens, chrysanthemum, Petunia hybrida and Salvia splendens treated with either ancymidol or PP-333 and Roepke et al (2013) who noticed that flavons and flavonols were accumulated in ray florets of bronze chrysanthemum cv. "Pelee" following daminozide application at 5000 ppm.…”

Section: Introductionmentioning

confidence: 99%

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Chrysanthemum and Gaillardia as Stunted Winter Annuals I. Tricolor Chrysanthemum (Chrysanthemum Carinatum Schousb.)

Shahin

El-Deen

El-Sayed

2014

Scient. J. of Flowers and Ornament. Plants

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Chrysanthemum carinatum Schousb. is a tall annual herb with a thin, weak stems suffers from slanting, but it is used excessively in Egypt for beautifying of beds and borders. So, a study was conducted at Orman Botanical Garden, Giza, Egypt during 2012/2013/2014 seasons to reveal the effect of foliar spraying with either paclobutrazol (PP-333) at the rates of 0, 50 and 100 ppm or cycocel (CCC) at the rates of 0, 1000 and 2000 ppm, twice with 3 weeks interval on growth performance, flowering and quality of 75-days-old seedlings of Chrysanthemum carinatum grown in 15-cm-diameter plastic pots filled with about 1.5 kg of sand + clay mixture (1:1, v/v).The obtained results have shown that means of all vegetative and root growth parameters were significantly decreased as a result of spraying with either PP-333 or CCC at various levels of each. The low level of both did not reduce the size of plants to the optimum size, as they caused a reduction mostly ranged between 20-25% only. The high level of CCC (2000 ppm), however induced a great decrement in most growth criteria reached about 65% or more compared to control in the two seasons. So, the plants appear more compressing than required, and that was accompanied by crinkled and smaller leaves. On the other hand, the high level of PP-333 (100 ppm) gave the most suitable plant size going with the pot size without any disorders. Flowering was delayed and the other flowering characters were decreased by the low and high levels of the two used growth retardants with the different significance levels relative to control in both seasons, except for inflorescence diameter and its fresh and dry weights traits which were significantly increased in response to spraying with any concentration of PP-333. The shortest stalk length was scored by PP-333 at 100 ppm treatment and that was benefit in preventing head nutation in the dwarfed plants. The results also indicated that PP-333 at either level increased the leaf content of chlorophyll a and b, total soluble sugars, total indoles and total phenols, but decreased content of carotenoids. On the other side, CCC treatments decreased content of chlorophyll a and b, total soluble sugars and total indoles but raised content of carotenoids and total phenols. Accordingly, it is recommended to spray the foliar of 75-days-old seedlings of Chrysanthemum carinatum Schousb. cultivated in 15-cmdiameter plastic pots with PP-333 aqueous solution at the rate of 100 ppm, twice with 3 weeks interval to get a unique flowering-pot-plant suitable for commercial marketing.

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Section: -Chemical Compositionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Chrysanthemum and Gaillardia as Stunted Winter Annuals I. Tricolor Chrysanthemum (Chrysanthemum Carinatum Schousb.)

Shahin

El-Deen

El-Sayed

2014

Scient. J. of Flowers and Ornament. Plants

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“…In addition to anthocyanin content, this phenomenon was found to be directly related to the induction of 3-deoxyflavonoids synthesis ( Schmitzer et al, 2012 ). Furthermore, a study reported that the inhibition of anthocyanidin synthase resulted in red color loss in the ray florets of bronze chrysanthemum after daminozide application which was a well-known chemical inhibitor of the gibberellin biosynthesis ( Roepke et al, 2013 ). In addition, Weiss et al (1995) found that gibberellin produced in anthers was transported to petals to take effect, where it directly induced the expression of genes, including CHS , CHI , DFR and UF3GT .…”

Section: Chemical Factorsmentioning

confidence: 99%

Recent advances on the development and regulation of flower color in ornamental plants

2015

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Flower color is one of the most important features of ornamental plants. Its development and regulation are influenced by many internal and external factors. Therefore, understanding the mechanism of color development and its regulation provides an important theoretical basis and premise for the cultivation and improvement of new color varieties of ornamental plants. This paper outlines the functions of petal tissue structure, as well as the distribution and type of pigments, especially anthocyanins, in color development. The progress of research on flower color regulation with a focus on physical factors, chemical factors, and genetic engineering is introduced. The shortcomings of flower color research and the potential directions for future development are explored to provide a broad background for flower color improvements in ornamental plants.

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“…The amide group can be found in the structure of many efficient plant growth regulators, such as daminozide (Fig. (a)), and thus is a suitable linker . In addition, in order to increase the water solubility of the targeted compounds to facilitate the delivery to plants, the carboxyl at C6 was retained .…”

Section: Introductionmentioning

confidence: 99%

Improved synthetic route of exo‐16,17‐dihydro‐gibberellin A5‐13‐acetate and the bioactivity of its derivatives towards Arabidopsis thaliana

Tian

Liu

et al. 2019

Pest Management Science

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BACKGROUND: The use of exo-16,17-dihydro-gibberellin A5-13-acetate (DHGA 5 ) in agriculture has been limited by its low synthetic yield. This study was aimed at optimizing the synthetic route of DHGA 5 , designing and synthesizing new derivatives with strong plant growth inhibitory activities.RESULTS: Previous synthetic methods were replaced with a shorter, milder and faster reaction route with higher yield (76.3%) of DHGA 5 . Based on this novel route, a series of new derivatives were designed and synthesized using DHGA 5 as a lead compound and characterized and evaluated for biological activities in Arabidopsis thaliana. Among the 15 tested derivatives, compound 14j showed a lower medium inhibition concentration (IC 50 , 73 M) in Arabidopsis than that of DHGA 5 (91 M). Gibberellin deficient mutant assay further revealed that 14j had very different activities compared to DHGA 5 as it specifically inhibits gibberellin biosynthetic pathways. In addition, 14j does not influence the interaction between gibberellin receptors (GID1) and the master growth repressor (RGA) based on yeast two-hybrid assay. CONCLUSION: The optimized synthetic route provides a promising method for large-scale preparation of DHGA 5 . Our biological assays indicate that 14j likely acts on gibberellin signaling elements other than GID1. These results indicate that novel plant growth regulators can be developed. Synthesis of DHGA 5 (Compound 8)The optimized synthetic route of DHGA 5 (8) is shown in Fig. 3.Synthesis of (The intermediate 2 was prepared as described previously. 26 A mixture of GA 3 (10 g, 28.88 mmol), acetic anhydride (Ac 2 O) (20 mL) and 4-dimethylaminopyridine (DMAP) (36 mg, 0.28 mmol) in anhydrous pyridine (50 mL) was stirred at room temperature (rt) for Pest Manag Sci 2020; 76: 807-817

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Daminozide Alters Anthocyanin Metabolism in Ray Florets of Bronze Chrysanthemum (Chrysanthemum morifolium Ramat.)

Cited by 13 publications

References 20 publications

Chrysanthemum and Gaillardia as Stunted Winter Annuals I. Tricolor Chrysanthemum (Chrysanthemum Carinatum Schousb.)

Chrysanthemum and Gaillardia as Stunted Winter Annuals I. Tricolor Chrysanthemum (Chrysanthemum Carinatum Schousb.)

Recent advances on the development and regulation of flower color in ornamental plants

Improved synthetic route of exo‐16,17‐dihydro‐gibberellin A5‐13‐acetate and the bioactivity of its derivatives towards Arabidopsis thaliana

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