ArticlePlant physiology2005
Spatial and temporal distribution of polyamine levels and polyamine anabolism in different organs/tissues of the tobacco plant. Correlations with age, cell division/expansion, and differentiation.
Article in Plant physiology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
45 citing papers in PubMed, 155 citations in OpenAlex.
- Synergistic application of taurine and spermidine enhances wheat tolerance to neodymium stress through redox homeostasis, metabolic adjustment, and nutrient regulation.Plant signaling & behavior · 2026Article
- Integrated metabolome and transcriptome analyses reveal the metabolic regulation of Anoectochilus roxburghii (Wall.) Lindl. in response to light quality.Analytical and bioanalytical chemistry · 2025Article
- Polyamines Interaction with Gaseous Signaling Molecules for Resilience Against Drought and Heat Stress in Plants.Plants (Basel, Switzerland) · 2025Review
- Transcriptome analysis provides insights into the molecular mechanism of GhSAMDCScientific reports · 2022Article
- Understanding the roles of osmolytes for acclimatizing plants to changing environment: a review of potential mechanism.Plant signaling & behavior · 2021Review
- Ectopic expression of GhSAMDCScientific reports · 2020Article
- Effects of Exogenous Putrescine on Delaying Senescence of Cut Foliage ofFrontiers in plant science · 2020Article
- Genetically Modified Heat Shock Protein90s and Polyamine Oxidases inPlants (Basel, Switzerland) · 2019Article
- The Interplay among Polyamines and Nitrogen in Plant Stress Responses.Plants (Basel, Switzerland) · 2019Review
- Polyamine Catabolism in Plants: A Universal Process With Diverse Functions.Frontiers in plant science · 2019Review
- Increasing Polyamine Contents Enhances the Stress ToleranceFrontiers in plant science · 2019Article
- Polyamines delay leaf maturation in low-alkaloid tobacco varieties.Plant direct · 2018Article
- Inheritance patterns in metabolism and growth in diallel crosses of Arabidopsis thaliana from a single growth habitat.Heredity · 2018Article
- Polyamines: Bio-Molecules with Diverse Functions in Plant and Human Health and Disease.Frontiers in chemistry · 2018Review
- Polyamines in the life of Arabidopsis: profiling the expression of S-adenosylmethionine decarboxylase (SAMDC) gene family during its life cycle.BMC plant biology · 2017Article
- Impact of heavy metal lead stress on polyamine levels in Halomonas BVR 1 isolated from an industry effluent.Scientific reports · 2017Article
- Nitrogen Addition Exacerbates the Negative Effects of Low Temperature Stress on Carbon and Nitrogen Metabolism in Moss.Frontiers in plant science · 2017Article
- An NADPH-Oxidase/Polyamine Oxidase Feedback Loop Controls Oxidative Burst Under Salinity.Plant physiology · 2016Article
- A NAC Transcription Factor Represses Putrescine Biosynthesis and Affects Drought Tolerance.Plant physiology · 2016Article
- Grain Filling Characteristics and Their Relations with Endogenous Hormones in Large- and Small-Grain Mutants of Rice.PloS one · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Polyamine (PA) titers and biosynthesis follow a basipetal decrease along the tobacco (Nicotiana tabacum) plant axis, and they also correlate negatively with cell size. On the contrary, the titers of arginine (Arg), ornithine (Orn), and arginase activity increase with age. The free (soluble)/total-PA ratios gradually increase basipetally, but the soluble conjugated decrease, with spermidine (Spd) mainly to determine these changes. The shoot apical meristems are the main site of Spd and spermine biosynthesis, and the hypogeous tissues synthesize mostly putrescine (Put). High and low Spd syntheses are correlated with cell division and expansion, respectively. Put biosynthetic pathways are differently regulated in hyper- and hypogeous tobacco tissues: Only Arg decarboxylase is responsible for Put synthesis in old hypergeous vascular tissues, whereas, in hypogeous tissues, arginase-catalyzed Orn produces Put via Orn decarboxylase. Furthermore, Orn decarboxylase expression coincides with early cell divisions in marginal sectors of the lamina, and Spd synthase strongly correlates with later cell divisions in the vascular regions. This detailed spatial and temporal profile of the free, soluble-conjugated, and insoluble-conjugated fractions of Put, Spd, and spermine in nearly all tobacco plant organs and the profile of enzymes of PA biosynthesis at the transcript, protein, and specific activity levels, along with the endogenous concentrations of the precursor amino acids Arg and Orn, offer new insight for further understanding the physiological role(s) of PAs. The results are discussed in the light of age dependence, cell division/expansion, differentiation, phytohormone gradients, senescence, and sink-source relationships.
Indexed as
Identifiers
What OpenQuestion holds
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.