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Janeczko, Anna; Filek, W.; Biesaga‐Kościelniak, J.; Marcińska, Izabela; Janeczko, Zbigniew

doi:10.1023/a:1022291718398

Cited by 39 publications

(16 citation statements)

References 16 publications

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“…Recent studies made on Arabidopsis thaliana mutants defective in genes involved in BRs signalling revealed the involvement of several components of BR-signalling pathway in the control of floral initiation and showed that the attenuation of BRs 0 signalling delays flowering in this plant species (Clouse 2008;Domagalska et al 2007;Turk et al 2005;Yu et al 2008). In our case, the application of 10 -8 -10 -14 M 24-epibrassinolide or the synthetic androstane analogue of castasterone in the earlier (V3/4) stages resulted in the delayed flowering and lower number of ears per plants, which agrees with the results of Janeczko et al (2003), who found that the application of 10 -8 or 10 -9 M 24-epibrassinolide (but not 10 -6 or 10 -7 M) to 18-days old seedlings of Arabidopsis reduced the number of plants in generative Table 6 The effect of 24-epibrassinolide (E) and synthetic androstane analogue of castasterone (A) on the number of fertile ears per plant, the ear length, the number of kernel rows and the average number of kernels per row in three maize genotypes (inbred lines 2023 and CE704, F1 hybrid 2023 9 CE704) Table 7 The effect of 24-epibrassinolide (E) and synthetic androstane analogue of castasterone (A) on the dry weight of whole ear, the dry weight of cob, the dry weight of 100 kernels and the shelling percentage in three maize genotypes (inbred lines 2023 and CE704, F1 hybrid 2023 9 CE704) Kęsy et al (2003) described the inhibition of flowering in Pharbitis nil seedlings that were treated with 10 -7 or 10 -6 M brassinolide or castasterone before or during flowering-inductive dark period. On the other hand, we observed a significant decrease in the length of period to anthesis and silking when maize plants were treated by foliar spray with BRs during V6/7 stages.…”

Section: Discussionsupporting

confidence: 91%

The effect of brassinosteroids on the morphology, development and yield of field-grown maize

et al. 2010

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The response of two field-grown inbred lines of maize (Zea mays L.) and their F1 hybrid to the application of 10 -8 -10 -14 M solutions of 24-epibrassinolide or synthetic androstane analogue of castasterone in V3/4 and V6/ 7 developmental stages was followed during the vegetative and early reproductive phases of plant development. Brassinosteroids (BRs) significantly affected (either positively or negatively, depending on the genotype and the developmental stage they were applied) the height of plants during the early weeks after their application, but not the final plant height nor the number of leaves. Spraying of plants with BRs in V3/4 developmental stage usually also increased the length of the 7th to 10th leaf, whereas the application in V6/7 developmental stage had the opposite effect. The beginning of the reproductive phase of plant development and the course of flowering was strongly influenced by the application of BRs. Treatment of plants in V3/4 stage delayed and treatment of plants in V6/7 stage advanced the dates of anthesis and silking, regardless of the type of BR used, its concentration or plant genotype. The influence of BRs on the development of the secondary ear was the least pronounced in the F1 hybrid; in both inbred lines it strongly depended on the concentrations of BRs used. Various yield parameters were also affected by treatment of plants with BRs, but this effect depended on the developmental stage during which the application of BRs occured, the plant genotype, the type of BR and its concentration.

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Section: Discussionsupporting

confidence: 91%

The effect of brassinosteroids on the morphology, development and yield of field-grown maize

et al. 2010

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“…By using this developmental criterion, it is found that bri1 and BR biosynthetic mutants det2, cpd and dwf4 are early flowering [70]. In addition, exogenous application of BR or the steroids, androstenedione and androsterone, cause late flowering in wild type Arabidopsis plants, suggesting that BR signaling pathway performs a repressive role in floral transition [70,71]. In Arabidopsis, transcription of the central floral repressor FLC and its three homologs, FLOWERING LOCUS M (FLM), MADS AFFECTING FLOWERING 4 (MAF4) and MAF5, are depressed in BR mutants and genetic studies demonstrate that BR antagonizes the autonomous pathway by constitutively activating FLC expression during vegetative growth [70].…”

Section: Role Of Br In Floral Transitionmentioning

confidence: 99%

Roles of Brassinosteroids in Plant Reproduction

2020

IJMS

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Brassinosteroids (BRs) are a group of steroid hormones, essentially important for plant development and growth. BR signaling functions to promote cell expansion and cell division, and plays a role in etiolation and reproduction. As the phytohormone originally identified in the pollen grains of Brassica napus, BR promotes the elongation of stigma. Recent studies have revealed that BR is also critical for floral transition, inflorescence stem architecture formation and other aspects of plant reproductive processes. In this review, we focus on the current understanding of BRs in plant reproduction, the spatial and temporal control of BR signaling, and the downstream molecular mechanisms in both the model plant Arabidopsis and crops. The crosstalk of BR with environmental factors and other hormones in reproduction will also be discussed.Int. J. Mol. Sci. 2020, 21, 872 2 of 16 BRI1 KINASE INHIBITOR 1 (BKI1) [14][15][16][17]. Then the kinase domains of BRI1 and BAK1 are transphosphorylated and the phosphorylated BKI1 can associate with the 14-3-3 family proteins to further amplify BR signaling [16,18]. Another two plasma membrane-anchored cytoplasmic kinases, BRASSINOSTEROID-SIGNALLING KINASE 1 (BSK1) and CONSTITUTIVE DIFFERENTIAL GROWTH 1 (CDG1) are also phosphorylated by activated BRI1 to inactivate the phosphatase BRI1-SUPPESSOR 1 (BSU1) [19][20][21]. BSU1 in turn dephosphorylates a conserved tyrosine residue of BRASSINOSTEROID INSENSITIVE 2 (BIN2), leading to the inactivation of this GSK3-like kinase [22]. The function of BIN2 is to phosphorylate and inactivate two homologous transcription factors, BRASSINAZOLE RESISTANT 1 (BZR1) and BR1-EMS-SUPPRESSSOR 1 (BES1) in the absence of BR [23][24][25]. The phosphorylation leads to the deactivation of these two transcription factors [26]. In high BR level, BSU1 inactivates BIN2 and unphosphorylated BZR1 and BES1 can initiate BR regulated gene activation and repression [23,27]. BZR1 and BES1 initiate BR responsive gene expression by recognizing and binding to the BR response DNA cis-element BR-Response Element (BRRE, CGTGC/TG) and E-box (CANNTG) [23,28]. Gain-of-function bzr1-1D and bes1-D contain a proline to leucine mutation in the protein degradation domain and therefore exhibit BR constitutive phenotypes [24,25,29]. However, the bzr1-1D and bes1-D are morphologically different, indicating the two proteins are involved in distinct BR functions. A number of transcription factors and histone modifiers are identified to interact with BZR1/BES1 for the control of various BR responses [28,[30][31][32][33]. BZR1 and BES1 belong to a six-member small family clade, consisting another four homologs, BES1/BZR1 homolog 1 to 4 (BEH1-4), which also act as downstream transcription factors in BR signaling pathway [28].BR regulates a broad range of plant growth and development, including hypocotyl elongation, root development, skotomorphogenesis, vascular differentiation, floral transition, anther development, and pollen grain maturation. In this review, we will focus on the functions ...

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“…For instance, shoot and root growth of the common model plant Arabidopsis thaliana [29] and of sunflower [39] were demonstrated to be influenced by PRG in a dose-dependent manner. The acceleration of flowering was observed in A. thaliana and wheat exposed to micromolar concentrations of PRG [40,41]. The involvement of PRG in reproduction processes in plants has been further indicated by the PRG stimulation of tube growth of mature tobacco pollen [42], and by increasing levels of endogenous PRG during the germination of kiwifruit pollen [43].…”

Section: Progesteronementioning

confidence: 99%

Plants are Capable of Synthesizing Animal Steroid Hormones

Tarkowská

2019

Molecules

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As a result of the findings of scientists working on the biosynthesis and metabolism of steroids in the plant and animal kingdoms over the past five decades, it has become apparent that those compounds that naturally occur in animals can also be found as natural constituents of plants and vice versa, i.e., they have essentially the same fate in the majority of living organisms. This review summarizes the current state of knowledge on the occurrence of animal steroid hormones in the plant kingdom, particularly focusing on progesterone, testosterone, androstadienedione (boldione), androstenedione, and estrogens.

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Cited by 39 publications

References 16 publications

The effect of brassinosteroids on the morphology, development and yield of field-grown maize

The effect of brassinosteroids on the morphology, development and yield of field-grown maize

Roles of Brassinosteroids in Plant Reproduction

Plants are Capable of Synthesizing Animal Steroid Hormones

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