ArticleFrontiers in plant science2014
Polyphenol oxidase as a biochemical seed defense mechanism.
Article in Frontiers in plant science, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 75 citations in OpenAlex.
- Getting by With a Little Help From Fungal Friends: Seed-Associated Endophytes Contribute to Seed Defense Against Fungal Pathogens in Keystone Tropical Trees.Ecology and evolution · 2026Article
- Widely targeted metabolomics reveals organ-specific metabolite accumulation and functional differentiation of leaves, pulp and seeds in wild jujube (Ziziphus jujuba var. spinosa).BMC plant biology · 2026Article
- Birth and death evolution of polyphenol oxidase (PPO) gene family in Oryza species.Botanical studies · 2026Article
- Rethinking polyphenol oxidases in wheat: beyond the "low-PPO is always better" paradigm.Frontiers in genetics · 2026Review
- Antimicrobial Peptides as Part of the Arsenal of Constitutive and Inducible Seed Defences in Tomato Seed Exudates Against Pathogens.Molecular plant pathology · 2025Article
- Biochemical Analysis of Recombinant Pea Seed Coat-Specific Polyphenol Oxidase (Journal of agricultural and food chemistry · 2025Article
- Gene Expression and Enzyme Kinetics of Polyphenol Oxidases in Strawberry and Their Possible Involvement in Enzymatic Browning Reactions in Strawberry Nectar.Foods (Basel, Switzerland) · 2025Article
- Identification and Analysis ofPlants (Basel, Switzerland) · 2024Article
- Multi-target genome editing reduces polyphenol oxidase activity in wheat (Frontiers in plant science · 2023Article
- Morphological-anatomical and chemical features of Copernicia alba fruits and seeds, a palm from Brazilian Pantanal.PloS one · 2023Article
- Measurements of Antibacterial Activity of Seed Crude Extracts in Cultivated Rice and Wild Oryza Species.Rice (New York, N.Y.) · 2022Article
- A metacommunity ecology approach to understanding microbial community assembly in developing plant seeds.Frontiers in microbiology · 2022Review
- Article
- Molecular mapping and characterization of QBp.caas-3BL for black point resistance in wheat (Triticum aestivum L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Article
- The immunity of Meiwa kumquat against Xanthomonas citri is associated with a known susceptibility gene induced by a transcription activator-like effector.PLoS pathogens · 2020Article
- Detection ofSensors (Basel, Switzerland) · 2020Article
- Laccase Properties, Physiological Functions, and Evolution.International journal of molecular sciences · 2020Review
- Article
- Chronic Sublethal Aluminum Exposure andFrontiers in microbiology · 2020Article
- The Dead Can Nurture: Novel Insights into the Function of Dead Organs Enclosing Embryos.International journal of molecular sciences · 2018Review
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Seed dormancy and resistance to decay are fundamental survival strategies, which allow a population of seeds to germinate over long periods of time. Seeds have physical, chemical, and biological defense mechanisms that protect their food reserves from decay-inducing organisms and herbivores. Here, we hypothesize that seeds also possess enzyme-based biochemical defenses, based on induction of the plant defense enzyme, polyphenol oxidase (PPO), when wild oat (Avena fatua L.) caryopses and seeds were challenged with seed-decaying Fusarium fungi. These studies suggest that dormant seeds are capable of mounting a defense response to pathogens. The pathogen-induced PPO activity from wild oat was attributed to a soluble isoform of the enzyme that appeared to result, at least in part, from proteolytic activation of a latent PPO isoform. PPO activity was also induced in wild oat hulls (lemma and palea), non-living tissues that cover and protect the caryopsis. These results are consistent with the hypothesis that seeds possess inducible enzyme-based biochemical defenses arrayed on the exterior of seeds and these defenses represent a fundamental mechanism of seed survival and longevity in the soil. Enzyme-based biochemical defenses may have broader implications since they may apply to other defense enzymes as well as to a diversity of plant species and ecosystems.
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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.