Antonio Rodrigues da Cunha Neto¹, Alexandra dos Santos Ambrósio¹, Arlinda de Jesus Rodrigues Resende¹, Breno Régis Santos¹, Michele Carla Nadal^2,*

Phyton-International Journal of Experimental Botany, Vol.94, No.3, pp. 539-560, 2025, DOI:10.32604/phyton.2025.061776 - 31 March 2025

Abstract Cytokinins are plant hormones that are essential for plant growth and development and are involved in a variety of processes. They are synthesized by the modification of adenine with an isoprenoid chain, resulting in cytokinins such as isopentenyladenine and zeatin. The levels of these hormones are regulated by conjugation, degradation and oxidation processes that modulate their activity. Cytokinins are perceived by cells through specific receptors that, when activated, trigger signaling cascades responsible for regulating the expression of genes critical for development. In addition, cytokinins interact with other hormones, such as auxins, to coordinate plant growth… More >

Abraham Lamboro^1,*, Xiao Han¹, Songnan Yang¹, Xueying Li¹, Dan Yao², Baixing Song¹, Jun Zhang^1,*

Phyton-International Journal of Experimental Botany, Vol.91, No.12, pp. 2619-2631, 2022, DOI:10.32604/phyton.2022.021404 - 29 August 2022

Abstract Efficient in vitro plantlet regeneration is an important step to successfully transform genes for the improvement of agronomic traits. A combination of 6-benzylaminopurine (BAP) and thidiazuron (TDZ) plant growth regulators was applied to evaluate shoot regeneration capacity whereas α-naphthalene acetic acid (NAA) combination with 6-benzylaminopurine (BAP), and 2, 4-dichlorophenoxyacetic acid (2, 4-D) with 6-benzylaminopurine were tested to optimize root induction for two peanut cultivars. The result showed combination (BAP with TDZ) was found to be effective in promoting shoot. The highest shoot regeneration frequency (93%) was obtained on a medium supplemented with 4 mg/L BAP and 0.5 mg/L… More >

MEI LAN^#, JINGFENG HU^#, HONGLI YANG, LIQIN ZHANG, XUEZHONG XU, JIANGMING HE^*

BIOCELL, Vol.44, No.4, pp. 751-767, 2020, DOI:10.32604/biocell.2020.012954 - 24 December 2020

Abstract Clubroot of Chinese cabbage (Brassica rapa L. ssp. pekinensis), caused by the obligate parasite Plasmodiophora brassicae, accounts for serious yield losses. The aim of our study was to explore the phytohormone levels and metabolome changes in the roots of resistant and susceptible B. rapa genotypes at a late stage of infection, i.e., 28 days post-infection. Both genotypes showed decreased auxin levels after P. brassicae infection except for indole-3-acetic acid. Overall, the susceptible genotype had higher auxin and cytokinin levels after infection, with the exception of trans-zeatin and 3- indolebutyric acid as compared to the resistant genotype. Jasmonic acid levels declined… More >

Ramírez H¹, JC Sánchez-Canseco¹, VM Zamora-Villa², JH Rancaño-Arrioja³

Phyton-International Journal of Experimental Botany, Vol.86, pp. 282-289, 2017, DOI:10.32604/phyton.2017.86.282

Abstract It is well established that the climatic change is altering yield in fruit trees. This adversity reflects, among others, extreme temperature modifications in northern Mexico. This effect modifies negatively the physiology of apple trees (Malus domestica Borkh.), originating excessive shoot growth and a decrease in flower bud formation. In this study, Prohexadione-Ca (P-Ca), 6-benzyl amino purine (BAP) and N6-furfuryladenine (kinetin) were evaluated on shoot and reproductive growth in Golden Delicious apple trees in Arteaga Coah., Mexico. A completely randomized design with 12 treatments was used. These were: Control, Prohexadione calcium (Ca-P) at doses of 150, 300… More >

Boschi CL, M Palazuelos, E Gandolfo

Phyton-International Journal of Experimental Botany, Vol.83, pp. 341-346, 2014, DOI:10.32604/phyton.2014.83.341

Abstract Ginkgo biloba seed germination has hormonal inhibitors. Because of this, it has to be stratified in cold (4 °C) for 9 weeks before planting. This study evaluated other management by dipping prior to the sowing of seeds in solutions of 6-benzylaminopurine (BA) to obviate those nine-week waiting period and thus increase seedling growth period during the first year of cultivation. Dose experiments were performed combining BA and cold days. Treatments were two solutions with BA (2.5 ppm and 5 ppm), four periods of cold stratification (25, 31, 38 and 49 days) and two growth conditions:(a) in… More >

Lagoutte¹ S, M Divo de Sesar², F V ilella³

Phyton-International Journal of Experimental Botany, Vol.78, pp. 31-36, 2009, DOI:10.32604/phyton.2009.78.031

Abstract Annual floral plant crops are produced in cells or pots of various sizes. Varying container size alters the volume which plant roots can explore, which in turn affect plant growth. This work assesed the effect of the initial container size on growth of Petunia x híbrida cv Dream Mix, supplemented with cytokinins after potting. Seedlings obtained in trays of 90 or 288 cells, were transplanted to 1l pots. They were then supplemented with 6-bencyladenine (BA). The assay consisted of 4 treatments: two container sizes by two BA conditions (with and without). Cell size conditioned growth above… More >

C. Luna, P. Sansberro*, L. Mroginski, J. Tarragó

BIOCELL, Vol.27, No.2, pp. 205-212, 2003, DOI:10.32604/biocell.2003.27.205

Abstract Micropropagation of Ilex dumosa var. dumosa R. (“yerba señorita”) from nodal segments containing one axillary bud was investigated. Shoot regeneration from explants of six-year-old plants was readily achieved in ¹/₄ strength Murashige and Skoog medium (¹/₄ MS) plus 30 gr·L^-1 sucrose and supplemented with 4.4 µM BA. Further multiplication and elongation of the regenerated shoots were obtained by subculture in a fresh medium of similar composition with 1.5 gr·L^-1 sucrose. Rooting induction from shoots were achieved in two steps: 1) 7 days in ¹/₄ MS (30 gr·L^-1 sucrose, 0.25 % Phytagel^®) with 7.3 µM IBA and 2) 21 days in More >