ArticlePlanta2019
Expression of a novel PSK-encoding gene from soybean improves seed growth and yield in transgenic plants.
Article in Planta, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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Who cites it
24 citing papers in PubMed, 36 citations in OpenAlex.
- Comparative Transcriptomic Analysis Provides Insights into PSK-α-Mediated Regulation of Diosgenin Biosynthesis inMolecules (Basel, Switzerland) · 2026Article
- Plant-parasitic nematodes produce functional mimics of plant PSK peptides to facilitate parasitism.bioRxiv : the preprint server for biology · 2026Article
- Genome-Wide Identification ofInternational journal of molecular sciences · 2026Article
- Identification of candidate loci regulating seed-associated traits in soybean using genome-wide association study and image-based high-throughput phenotyping.Frontiers in plant science · 2026Article
- The miR172a-ERF416/413 module regulates soybean seed traits.Journal of integrative plant biology · 2025Article
- Betulinic Acid Delays Turnip Mosaic Virus Infection by Activating the Phytosulfokine Signalling Pathway in Nicotiana benthamiana.Molecular plant pathology · 2025Article
- Genome-Wide Identification and Expression Analysis of Phytosulfokine Peptide Hormone Genes inInternational journal of molecular sciences · 2025Article
- Peptide hormones in plants.Molecular horticulture · 2025Review
- Small Peptides: Orchestrators of Plant Growth and Developmental Processes.International journal of molecular sciences · 2024Review
- Sulfated peptides and their receptors: Key regulators of plant development and stress adaptation.Plant communications · 2024Review
- A DNA demethylase reduces seed size by decreasing the DNA methylation of AT-rich transposable elements in soybean.Communications biology · 2024Article
- Understanding the Molecular Regulatory Networks of Seed Size in Soybean.International journal of molecular sciences · 2024Review
- Effects of drought and salt stress on the root phenotype of wheat seedlings and underlying gene expression analysis.Frontiers in plant science · 2024Article
- Phytosulfokine alpha enhances regeneration of transformed and untransformed protoplasts ofFrontiers in plant science · 2024Article
- Sulfated peptides: key players in plant development, growth, and stress responses.Frontiers in plant science · 2024Review
- The Research Process of PSK Biosynthesis, Signaling Transduction, and Potential Applications inPlants (Basel, Switzerland) · 2023Review
- Article
- Major genetic locus with pleiotropism determined seed-related traits in cultivated and wild soybeans.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- Article
- Phytosulfokine peptides, their receptors, and functions.Frontiers in plant science · 2023Review
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
MAIN
conclusionExpression of GmPSKγ1 , a novel PSK-encoding gene from soybean, increases seed size and yield in transgenic plants by promoting cell expansion. Phytosulfokine-α (PSK-α), a sulfated pentapeptide hormone with the sequence YIYTQ, plays important roles in many aspects of plant growth and development. In this study, we identified a pair of putative precursor genes in soybean, GmPSKγ1 and -2, encoding a PSK-like peptide: PSK-γ. Similar to PSK-α in amino acid composition, the sequence of PSK-γ is YVYTQ, and the tyrosines undergo sulfonylation. Treatment of Arabidopsis seedlings with synthetic sulfated PSK-γ significantly enhanced root elongation, indicating that PSK-γ might be a functional analog of PSK-α. Expression pattern analysis revealed that the two GmPSKγ genes, especially GmPSKγ1, are primarily expressed in developing soybean seeds. Heterologous expression of GmPSKγ1 under the control of a seed-specific promoter markedly increased seed size and weight in Arabidopsis, and this promoting effect of PSK-γ on seed growth was further confirmed in transgenic tobacco constitutively expressing GmPSKγ1. Cytological analysis of transgenic Arabidopsis seeds revealed that PSK-γ promotes seed growth by inducing embryo cell expansion. In addition, expression analysis of downstream candidate genes suggested that PSK-γ signaling might regulate cell wall loosening to promote cell expansion in Arabidopsis seeds. Overall, our results shed light on the mechanism by which PSK-γ promotes seed growth, paving the way for the use of this new peptide for biotechnological improvement of crop seed/grain size and yield.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.