ArticleBMC plant biology2017
The role of Tre6P and SnRK1 in maize early kernel development and events leading to stress-induced kernel abortion.
Article in BMC plant biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 70 citations in OpenAlex.
- Water Stress and Shade Elicit Similar Convergent Responses in Maize Kernel Development and Gene Expression During Early Post-Pollination.Plants (Basel, Switzerland) · 2026Article
- From development to yield: genetic and molecular regulation of agronomic traits in maize seeds.Frontiers in plant science · 2026Review
- Intercellular compartmentation of trehalose 6-phosphate metabolism in Setaria viridis leaves.Journal of experimental botany · 2025Article
- Integrative Transcriptomic and Phosphoproteomic Analysis Reveals Key Components of the SnRK1 Signaling Network in Rice.Plant direct · 2025Article
- Dual and spatially resolved drought responses in the Arabidopsis leaf mesophyll revealed by single-cell transcriptomics.The New phytologist · 2025Article
- Direct and indirect responses of the Arabidopsis transcriptome to an induced increase in trehalose 6-phosphate.Plant physiology · 2024Article
- Sugar sensing in C4 source leaves: a gap that needs to be filled.Journal of experimental botany · 2024Review
- Genome-Wide Identification and Expression Analysis of the Trehalose-6-phosphate Synthase and Trehalose-6-phosphate Phosphatase Gene Families in Rose (Plants (Basel, Switzerland) · 2023Article
- The Inferior Grain Filling Initiation Promotes the Source Strength of Rice Leaves.Rice (New York, N.Y.) · 2023Article
- TaTPP-7A positively feedback regulates grain filling and wheat grain yield through T6P-SnRK1 signalling pathway and sugar-ABA interaction.Plant biotechnology journal · 2023Article
- In vivo protein kinase activity of SnRK1 fluctuates in Arabidopsis rosettes during light-dark cycles.Plant physiology · 2023Article
- Comparative Metabolomics Profiling Reveals Key Metabolites and Associated Pathways Regulating Tuber Dormancy in White Yam (Metabolites · 2023Article
- Securing maize reproductive success under drought stress by harnessing COFrontiers in plant science · 2023Review
- Genome of Paspalum vaginatum and the role of trehalose mediated autophagy in increasing maize biomass.Nature communications · 2022Article
- Trehalose 6-Phosphate/SnRK1 Signaling Participates in Harvesting-Stimulated Rubber Production in the Hevea Tree.Plants (Basel, Switzerland) · 2022Article
- Integrated Transcriptome and Targeted Metabolite Analysis Reveal miRNA-mRNA Networks in Low-Light-Induced Lotus Flower Bud Abortion.International journal of molecular sciences · 2022Article
- Crop genetic diversity uncovers metabolites, elements, and gene networks predicted to be associated with high plant biomass yields in maize.PNAS nexus · 2022Article
- Sink Strength Promoting Remobilization of Non-Structural Carbohydrates by Activating Sugar Signaling in Rice Stem during Grain Filling.International journal of molecular sciences · 2022Article
- Increasing yield on dry fields: molecular pathways with growing potential.The Plant journal : for cell and molecular biology · 2022Review
- High light and temperature reduce photosynthetic efficiency through different mechanisms in the CCommunications biology · 2021Article
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Authors and funding
8 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDrought stress during flowering is a major contributor to yield loss in maize. Genetic and biotechnological improvement in yield sustainability requires an understanding of the mechanisms underpinning yield loss. Sucrose starvation has been proposed as the cause for kernel abortion; however, potential targets for genetic improvement have not been identified. Field and greenhouse drought studies with maize are expensive and it can be difficult to reproduce results; therefore, an in vitro kernel culture method is presented as a proxy for drought stress occurring at the time of flowering in maize (3 days after pollination). This method is used to focus on the effects of drought on kernel metabolism, and the role of trehalose 6-phosphate (Tre6P) and the sucrose non-fermenting-1-related kinase (SnRK1) as potential regulators of this response.
resultsA precipitous drop in Tre6P is observed during the first two hours after removing the kernels from the plant, and the resulting changes in transcript abundance are indicative of an activation of SnRK1, and an immediate shift from anabolism to catabolism. Once Tre6P levels are depleted to below 1 nmol∙g
conclusionsThe impact of kernel excision from the ear triggers a cascade of events starting with the precipitous drop in Tre6P levels. It is proposed that the removal of Tre6P suppression of SnRK1 activity results in transcription of putative SnRK1 target genes, and the metabolic transition from biosynthesis to catabolism. This highlights the importance of Tre6P in the metabolic response to starvation. We also present evidence that sugars can mediate the activation of SnRK1. The precipitous drop in Tre6P corresponds to a large increase in transcription of ZmTPPA.3, indicating that this specific enzyme may be responsible for the de-phosphorylation of Tre6P. The high levels of Tre6P in the immature embryo are likely important for preventing kernel abortion.
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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.