ArticleBMC plant biology2011
Whole-organ analysis of calcium behaviour in the developing pistil of olive (Olea europaea L.) as a tool for the determination of key events in sexual plant reproduction.
Article in BMC plant biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 11 citations in OpenAlex.
- Extracellular calcium modulates pollen tube growth and guidance inbioRxiv : the preprint server for biology · 2026Article
- X-ray Microanalysis of Elemental Composition ofPlants (Basel, Switzerland) · 2024Article
- Distribution of exchangeable CaScientific reports · 2024Article
- SWATH-MS based quantitive proteomics reveal regulatory metabolism and networks of androdioecy breeding system in Osmanthus fragrans.BMC plant biology · 2021Article
- A comparative study on Ca content and distribution in two Gesneriaceae species reveals distinctive mechanisms to cope with high rhizospheric soluble calcium.Frontiers in plant science · 2014Article
- The plant stigma exudate: a biochemically active extracellular environment for pollen germination?Plant signaling & behavior · 2014Article
- Identification of genes specifically or preferentially expressed in maize silk reveals similarity and diversity in transcript abundance of different dry stigmas.BMC genomics · 2012Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe pistil is a place where multiple interactions between cells of different types, origin, and function occur. Ca(2+) is one of the key signal molecules in plants and animals. Despite the numerous studies on Ca(2+) signalling during pollen-pistil interactions, which constitute one of the main topics of plant physiology, studies on Ca(2+) dynamics in the pistil during flower formation are scarce. The purpose of this study was to analyze the contents and in situ localization of Ca(2+) at the whole-organ level in the pistil of olive during the whole course of flower development.
resultsThe obtained results showed significant changes in Ca(2+) levels and distribution during olive pistil development. In the flower buds, the lowest levels of detectable Ca(2+) were observed. As flower development proceeded, the Ca(2+) amount in the pistil successively increased and reached the highest levels just after anther dehiscence. When the anthers and petals fell down a dramatic but not complete drop in calcium contents occurred in all pistil parts. In situ Ca(2+) localization showed a gradual accumulation on the stigma, and further expansion toward the style and the ovary after anther dehiscence. At the post-anthesis phase, the Ca(2+) signal on the stigmatic surface decreased, but in the ovary a specific accumulation of calcium was observed only in one of the four ovules. Ultrastructural localization confirmed the presence of Ca(2+) in the intracellular matrix and in the exudate secreted by stigmatic papillae.
conclusionsThis is the first report to analyze calcium in the olive pistil during its development. According to our results in situ calcium localization by Fluo-3 AM injection is an effective tool to follow the pistil maturity degree and the spatial organization of calcium-dependent events of sexual reproduction occurring in developing pistil of angiosperms. The progressive increase of the Ca(2+) pool during olive pistil development shown by us reflects the degree of pistil maturity. Ca(2+) distribution at flower anthesis reflects the spatio-functional relationship of calcium with pollen-stigma interaction, progamic phase, fertilization and stigma senescence.
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