ArticleBMC plant biology2025
Genotype-dependent induction of embryogenic callus and programmed cell death in Korean pine.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 2 papers.
What it found
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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.
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Who cites it
2 citing papers in PubMed.
- Induction and Marker Selection of Embryogenic-like Callus from the Hypocotyl ofPlants (Basel, Switzerland) · 2026Article
- Correction: Genotype-dependent induction of embryogenic callus and programmed cell death in Korean pine.BMC plant biology · 2025Article
Corrections and comments
- Erratum issued
Authors and funding
7 authors.
Funding
Abstract
backgroundThe strong genotype dependence of embryogenic callus (EC) induction limits the high-frequency regeneration of Korean pine (Pinus koraiensis) via somatic embryogenesis (SE).
methodsWe examined the morphological and histocytological features of various callus types using external morphology, microstructure, and ultrastructure analyses. To assess their embryogenic potential, we conducted somatic embryogenesis (SE) experiments. Additionally, we investigated programmed cell death (PCD) events associated with genotype-dependent embryogenic callus (EC) formation in Korean pine by performing TUNEL assays, detecting caspase-3 and vacuolar processing enzyme (VPE) activity, and measuring H
resultsObvious cell death was observed in the cell ultrastructure of LEC and NEC induced by recalcitrant genotypes. In LEC cells, we found typical characteristics of autolytic PCD, such as vacuole fusion, vacuolation of cells, invagination and rupture of the plasma membrane, few cytoplasm and organelles. In the NEC, degrading nucleus, withered cytoplasm and invagination and rupture of the plasma membrane were detected in early stage, but vacuole fusion was not observed. In addition, we observed DNA fragmentation into small fragments in LEC and NEC. Significant changes in the activities of caspase-3 and VPE, reactive oxygen species (ROS) levels, especially for H
conclusionPCD was present in NEC and LEC cells in recalcitrant genotypes of Korean pine, which may be responsible for the loss or reduction of embryonic capacity of induced Korean pine callus. Our novel findings on PCD help elucidate the underlying causes of the difficulty in inducing EC from recalcitrant genotypes of Korean pine from a novel perspective.
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