Gibberellins and seed germination

Urbanová, Terezie; Leubner‐Metzger, Gerhard

doi:10.1002/9781119210436.ch9

Cited by 50 publications

(42 citation statements)

References 116 publications

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“…Gibberellic acid (GA 3 ) is a natural plant regulator with multiple applications in agriculture and horticulture industry due to its positive impact on plant growth and development. Its positive effects have been demonstrated in multiple crops and ornamental plants by exhibiting enhanced seed germination [5,6], shortening the juvenile phase, leaf expansion and development, stem elongation [7,8], early flowering [9][10][11][12][13] and fruit development; their role in the promotion of flowering in plants was reported in several studies, including Arabidopsis thaliana (thale cress) [14], Brunonia australis R.Br. (blue pincushion or native cornflower) [15], Henckelia humboldtianus (Humboldt's Stone Flower) [16], and Iris nigricans Dinsm.…”

Section: Introductionmentioning

confidence: 99%

Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

et al. 2020

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Cyclamen species (swinebread spp.) are perennial herbaceous plants which belong to the Primulaceae family, widely used as medicinal or ornamental plants. Currently, gibberellic acid (GA3), an environmentally friendly bioregulator is widely used to enhance the productivity and phenotypic characteristics of multiple ornamental crops. A dual experiment was conducted to evaluate the influence of gibberellic acid (50, 100 or 150 mg/L), on germination earliness of seeds, along with growth and ornamental quality of selected Cyclamen species. Additionally, a greenhouse experiment with long and short sunlight photoperiod was conducted to evaluate its importance in the development of Cyclamen plants. Our results indicated that under short sunlight exposure, seeds germinated earlier than those kept in long sunlight photoperiod. Plants treated with foliar applications of GA3 exhibited higher plant height, leaf area, number of leaves, root length and tuber development. Significant differences were found in germination percentage (GP), mean germination time (MGT) and seedling vigor index (SVI), within different GA3 supplementation and greenhouse sunlight intensity (short and long days). In conclusion, our study suggests that seedling vigor and ornamental quality can be increased by GA3 application, an economic strategy for enhancing germination and growth of selected Cyclamen species.

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Section: Introductionmentioning

confidence: 99%

Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

et al. 2020

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“…Gibberellin (GA) is a type of phytohormone that is involved in many aspects of plant growth and development, including seed germination (Tyler et al 2004;Urbanova and Leubner-Metzger 2016), floral and fruit development (Cheng et al 2003;Serrani et al 2007), stem elongation, leaf growth (Sun 2010;Dayan et al 2012) and fertility (Plackett et al 2011;Kwon and Paek 2016). In GA signalling, the GA-responsive genes are activated after the removal of the repressor proteins from the DELLA family.…”

Section: Gibberellin Signallingmentioning

confidence: 99%

Diverse and dynamic roles of F-box proteins in plant biology

Hamid

Ahmad-Fauzi

Zainal

et al. 2020

Planta

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The SCF complex is a widely studied multi-subunit ring E3 ubiquitin ligase that tags targeted proteins with ubiquitin for protein degradation by the ubiquitin 26S-proteasome system (UPS). The UPS is an important system that generally keeps cellular events tightly regulated by purging misfolded or damaged proteins and selectively degrading important regulatory proteins. The specificity of this post-translational regulation is controlled by F-box proteins (FBPs) via selective recognition of a protein-protein interaction motif at the C-terminal domain. Hence, FBPs are pivotal proteins in determining the plant response in multiple scenarios. It is not surprising that the FBP family is one of the largest protein families in the plant kingdom. In this review, the roles of FBPs, specifically in plants, are compiled to provide insights into their involvement in secondary metabolites, plant stresses, phytohormone signalling, plant developmental processes and miRNA biogenesis. Keywords Ubiquitin 26S-proteasome system (UPS) • SCF complex • F-box protein (FBP) • Plant stresses • Phytohormone signalling • Secondary metabolites • Plant development • miRNA

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“…Gibberellins are able to accelerate the cellular metabolic pathways involved in respiration and protein biosynthesis. In addition, GA‐deficient embryos have a decreased rate of growth . Thus, GAs stimulate embryo growth in seeds, creating conditions similar to warm stratification .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, GA-deficient embryos have a decreased rate of growth. 13,14 Thus, GAs stimulate embryo growth in seeds, creating conditions similar to warm stratification. 15 Endogenous GAs play various physiological roles in growth, germination, and regulation of seed dormancy.…”

Section: Introductionmentioning

confidence: 99%

Integrated metabolomics signature for assessing the longevity of Panax ginseng seeds

et al. 2019

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BACKGROUND Panax ginseng seeds have strong dormancy and a prolonged germination period in comparison to other seeds; thus, it is a great challenge to propagate ginseng. Seed longevity is closely associated with germination rate and viability, so we assumed that if a seed loses its viability, specific metabolic alterations regarding plant growth factors might occur. In this study, we divided ginseng seeds into normal and accelerated‐aging groups. Both groups were treated with gibberellic acid, which is one of the most important plant‐growth regulators. Afterward, gas chromatography–mass spectrometry (GC–MS) was used to analyze the samples, to identify the metabolic alterations between the two groups. Results Forty‐four endogenous metabolites in normal and accelerated aging groups were putatively identified. To determine the differential significance of these metabolites, t‐tests and fold‐change analysis were conducted followed by principal component analysis and partial least‐squares discriminant analysis to determine the metabolites that showed distinct responses between the groups. Among the differentially expressed metabolites (P value < 0.05 and FDR < 0.1), nine metabolites were selected as potential biomarker candidates for the prediction of seed longevity. CONCLUSION Nine metabolites related to ginseng seed longevity were identified by comparing metabolomes. Our findings suggest that ginseng propagation can be facilitated by the regulation of these distinctive metabolic features of the seeds. © 2019 Society of Chemical Industry

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Gibberellins and seed germination

Cited by 50 publications

References 116 publications

Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

Gibberellic Acid Can Improve Seed Germination and Ornamental Quality of Selected Cyclamen Species Grown Under Short and Long Days

Diverse and dynamic roles of F-box proteins in plant biology

Integrated metabolomics signature for assessing the longevity of Panax ginseng seeds

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