Zenodo Update 2025: New Dataset Versions for IAPT and Mediterranean Chromosome Series

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The ChromoDB project is pleased to announce a significant update to its global cytogenetic infrastructure. As of January 2026, the master database has reached a total of 46,319 validated records, representing a substantial expansion from the previous 41,025 entries. This growth reflects the integration of exhaustive chromosomal data published through December 2025.

While the comprehensive master database—accessible via the search portal—now includes enhanced taxonomic indexing (including preliminary data for recently described taxa and synchronization with global authorities), the project has prioritized the public release of two specialized datasets in Version 2.0 through the Zenodo repository.

Update of the IAPT/IOPB Chromosome Data Series (v2.0)

This dataset remains the core repository for chromosomal counts published within the official series of the International Association for Plant Taxonomy (IAPT). The new version incorporates all records up to the end of 2025, ensuring that researchers have a stable, citable, and open-access source for this historically significant collection of cytogenetic data.

Update of the Mediterranean Chromosome Number Reports (v2.0)

The dataset dedicated to the Flora Mediterranea series has been updated and structurally optimized. Key highlights of this version include:

  • Expanded Coverage: The dataset now comprises 2,322 individual chromosome counts and 222 bibliographic references, covering the monographic series until December 2025.

  • Structural Standardization: To align with the global ChromoDB schema, the bibliographic metadata has been consolidated. The separate fields for volume, issue, and pages have been merged into a single volume_pages attribute (e.g., “31: 250-265”).

  • Geographic Refinement: Geographic information has been standardized at the country level. In this version, the country field serves as the primary geographic identifier, while the specific locality field has been deprecated to ensure better interoperability with large-scale biodiversity datasets.

Data Accessibility and Citability

The Version 2.0 releases on Zenodo provide the scientific community with permanent Digital Object Identifiers (DOIs), facilitating the correct citation of these specific data subsets in taxonomic and evolutionary research. For advanced queries and access to the complete corpus of 46,319 records, researchers are invited to utilize the ChromoDB search portal.

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