ArticleAnnals of botany2011
Spatial and temporal profiles of cytokinin biosynthesis and accumulation in developing caryopses of maize.
Article in Annals of botany, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 42 citations in OpenAlex.
- How meristems shape plant architecture in cereals-Cereal Stem Cell Systems (CSCS) Consortium.The Plant cell · 2025Review
- Integrative Transcriptome and Metabolome Analysis Identifies Potential Pathways Associated with Cadmium Tolerance in Two Maize Inbred Lines.Plants (Basel, Switzerland) · 2025Article
- Cytokinin Translocation to, and Biosynthesis and Metabolism within, Cereal and Legume Seeds: Looking Back to Inform the Future.Metabolites · 2023Review
- Dissection of Developmental Programs and Regulatory Modules Directing Endosperm Transfer Cell and Aleurone Identity in the Syncytial Endosperm of Barley.Plants (Basel, Switzerland) · 2023Article
- Novel insights into maize (Zea mays) development and organogenesis for agricultural optimization.Planta · 2023Review
- Developing Genetic Engineering Techniques for Control of Seed Size and Yield.International journal of molecular sciences · 2022Review
- Molecular mechanisms of maize endosperm transfer cell development.Plant cell reports · 2022Review
- Convergence and Divergence of Sugar and Cytokinin Signaling in Plant Development.International journal of molecular sciences · 2021Review
- Cytokinin dehydrogenase: a genetic target for yield improvement in wheat.Plant biotechnology journal · 2020Review
- Characterization of phytohormone and transcriptome reprogramming profiles during maize early kernel development.BMC plant biology · 2019Article
- A rapid approach to investigate spatiotemporal distribution of phytohormones in rice.Plant methods · 2016Article
- Article
- Current perspectives on the hormonal control of seed development in Arabidopsis and maize: a focus on auxin.Frontiers in plant science · 2014Review
- Comprehensive hormone profiling of the developing seeds of four grain legumes.Plant cell reports · 2013Article
- Integration of epigenetic and genetic controls of seed size by cytokinin in Arabidopsis.Proceedings of the National Academy of Sciences of the United States of America · 2013Article
- Roles and regulation of cytokinins in tomato fruit development.Journal of experimental botany · 2012Article
- The plant cell cycle.Annals of botany · 2011Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsCytokinins are a major group of plant hormones and are associated with various developmental processes. Developing caryopses of maize have high levels of cytokinins, but little is known about their spatial and temporal distribution. The localization and quantification of cytokinins was investigated in maize (Zea mays) caryopsis from 0 to 28 d after pollination together with the expression and localization of isopentenyltransferase ZmIPT1 involved in cytokinin biosynthesis and ZmCNGT, the gene putatively involved in N9-glucosylation.
methodsBiochemical, cellular and molecular approaches resolved the overall cytokinin profiles, and several gene expression assays were used for two critical genes to assess cytokinin cell-specific biosynthesis and conversion to the biologically inactive form. Cytokinins were immunolocalized for the first time in maize caryopses. KEY
resultsDuring the period 0-28 d after pollination (DAP): (1) large quantities of cytokinins were detected in the maternal pedicel region relative to the filial tissues during the early stages after fertilization; (2) unpollinated ovules did not accumulate cytokinins; (3) the maternal nucellar region showed little or no cytokinin signal; (4) the highest cytokinin concentrations in filial endosperm and embryo were detected at 12 DAP, predominantly zeatin riboside and zeatin-9-glucoside, respectively; and (5) a strong cytokinin immuno-signal was detected in specific cell types in the pedicel, endosperm and embryo.
conclusionsThe cytokinins of developing maize caryopsis may originate from both local syntheses as well as by transport. High levels of fertilization-dependent cytokinins in the pedicel suggest filial control on metabolism in the maternal tissue; they may also trigger developmental programmed cell death in the pedicel.
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