Cytokinin-like activity of N,N′-diphenylureas. N,N′-bis-(2,3-methylenedioxyphenyl)urea and N,N′-bis-(3,4-methylenedioxyphenyl)urea enhance adventitious root formation in apple rootstock M26 (Malus pumila Mill.)

Ricci, Ada; Carra, Angela; Torelli, Anna; Maggiali, C. A.; Morini, Giuseppina; Branca, C.

doi:10.1016/s0168-9452(01)00359-4

Cited by 33 publications

(28 citation statements)

References 19 publications

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“…rootstock M26 were maintained as previously described (Ricci et al 2001b) with minor modifications. The cuttings deprived of apices were propagated in tubes on a micropropagation (MP) medium (MS salts, Murashige and Skoog 1962, plus 0.4 mg/l thiamine HCl, 0.5 mg/l nicotinic acid, 0.5 mg/l pyridoxine HCl, 100 mg/l myo-inositol, 10 g/l sucrose, 20 g/l sorbitol, 0.65% Phyto Agar (Duchefa), 5.8 pH).…”

Section: Apple Stem Slice Testmentioning

confidence: 99%

“…These compounds enhance the formation of adventitious roots when supplemented alone to apple rootstock M26 microcuttings, but they do not show any auxin-like activity (Ricci et al 2001b). Roots emerge directly from the cut surface without any callus formation and all the rooted microcuttings survive when transferred to greenhouse conditions (Ricci A., personal communication).…”

Section: Introductionmentioning

confidence: 99%

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Diheteroarylurea derivatives as adventitious rooting adjuvants in mung bean shoots and M26 apple rootstock

et al. 2006

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The present research investigates the biological profile of eight symmetrical diheteroarylureas and phenylheteroarylureas, testing their hypothetical cytokinin-like activity and rooting activity. Cytokinin-like activity was assayed by the betacyanin (so-called amaranthin) accumulation test and by the tomato regeneration test. The rooting activity was assessed using the mung bean rooting test, the apple stem slice test and the rooting of apple microcuttings. Three compounds, 1,3-di(pyrazin-2-yl)urea (3a), 1,3-di(benzo[d] oxazol-5-yl)urea (3b) and 1,3-di(benzo[d]oxazol-6-yl)urea (3c), enhanced adventitious root formation in apple stem slice test, but only 3b and 3c were active in the mung bean rooting test. Compound 3b, that showed the best rooting activity, was also able to enhance the adventitious root formation in apple microcuttings. None of the compounds showed cytokinin-like activity.

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Section: Apple Stem Slice Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diheteroarylurea derivatives as adventitious rooting adjuvants in mung bean shoots and M26 apple rootstock

et al. 2006

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“…Some elite varieties of woody species, like apple, eucalypt, and pine, are difficult to root and therefore cannot be exploited as a commercial product. Because of commercial interest, several studies on apple (Ricci et al, 2001;Naija et al, 2008;Smolka et al, 2009), eucalypt (Fett-Neto et al, 2001Schwambach et al, 2005) and loblolly pine (Greenwood et al, 2001;Rasmussen and Hunt, 2010) have been conducted. However, the number of molecular studies of the rooting process in these species is very limited and most studies have focussed on techniques that promote adventitious rooting.…”

Section: Commercial Importancementioning

confidence: 99%

“…Similarly, CKs are mainly inhibiting AR formation (Geiss et al, 2009;Ramı´rez-Carvajal et al, 2009) but have a promoting effect on the early induction phase. Low concentration of CK have been shown to enhance rooting of apple microcuttings more likely by stimulating cell division (De Klerk et al, 2001) and CK-like activity of N,N'-diphenylureas enhance AR formation in apple rootstock M26 (Ricci et al, 2001). GA's inhibitory effects on AR formation have been shown in poplar (Busov et al, 2006) own but had a synergistic effect together with ethylene to promote ARs, and ABA acted as a competitive inhibitor of GA activity.…”

Section: The Role Of Auxin and Other Plant Hormonesmentioning

confidence: 99%

Adventitious Roots

Bellini

2014

Encyclopedia of Life Sciences

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The root system of a plant is composed of the primary, lateral and adventitious roots (ARs). Lateral roots always develop from roots, whereas ARs form from stem or leaf‐derived cells. AR formation is part of the normal development of the plant and occurs naturally, like in most monocotyledonous for which they constitute the main root system or in many dicotyledonous species that propagate vegetatively. Adventitious rooting is an essential step for vegetative propagation of economically important horticultural and woody species as it allows clonal propagation and rapid fixation of superior genotypes prior to their introduction into production or breeding programmes. Development of ARs is a complex process that is affected by multiple endogenous and environmental factors, including phytohormones; light; nutritional status; associated stress responses, such as wounding; and genetic characteristics. Key Concepts: ARs are the main root system for monocots. ARs are an adaptative response to environmental changes. ARs are required for vegetative propagation of plants. ARs arise from any organ of the plant but the root. ARs originate from different cell types depending on the organ or the species. ARs can be induced by ECMs or Agrobacterium rhizogenes . ARdevelopment is controlled by environmental factors. Adventitious rooting is an age‐dependant process. Auxin cross talks with other hormones to control adventitious rooting. Adventitious rooting is a complex quantitative genetic trait.

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“…Urea and its derivatives are versatile organic compounds present in a number of naturally occurring compounds and are associated with a wide range of therapeutic and pharmaceutical applications as HIV-1 protease inhibitors 1 , Raf kinase inhibitors 2 , peptidomimetics 3 , cytokinin analogous 4 , anti-melanoma agents 5 , inhibitors of Murine receptor A and Murine receptor B 6 , antihyperglycaemic agents 7 , antagonists of human vanilloid VR 1 receptors 8 , anti tuberculosis agents 9 , potent inhibitors of influenza virus neuraminidase 10 and diuretics 11 . Several urea derivatives are used as plant growth regulators, herbicides, pesticides, corrosion inhibitors, antioxidant, dyes for cellulose fibers, antidiabetic and tranquillizing drugs [12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

ZrOCl2.8H2O: An Efficient Catalyst for the Synthesis of N,N?-Disubstituted Ureas from Biuret Under Solvent Free Conditions

2017

Chem Sci Trans

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A green and facile synthesis of N,N'-disubstituted urea from biuret and different amines have been developed using ZrOCl 2 .8H 2 O as catalyst in the absence of solvent under microwave irradiations. The remarkable features of this protocol are higher yield in shorter reaction time, use of non-toxic and readily available catalyst, clement and environment affable reaction conditions and simple work up procedures.

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Cytokinin-like activity of N,N′-diphenylureas. N,N′-bis-(2,3-methylenedioxyphenyl)urea and N,N′-bis-(3,4-methylenedioxyphenyl)urea enhance adventitious root formation in apple rootstock M26 (Malus pumila Mill.)

Cited by 33 publications

References 19 publications

Diheteroarylurea derivatives as adventitious rooting adjuvants in mung bean shoots and M26 apple rootstock

Diheteroarylurea derivatives as adventitious rooting adjuvants in mung bean shoots and M26 apple rootstock

Adventitious Roots

ZrOCl2.8H2O: An Efficient Catalyst for the Synthesis of N,N?-Disubstituted Ureas from Biuret Under Solvent Free Conditions

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