ArticlePloS one2017
Three-dimensional ultrastructural study of the anther of Silene latifolia infected with Microbotryum lychnidis-dioicae.
Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Convergence Analysis of Rust Fungi and Anther Smuts Reveals Their Common Molecular Adaptation to a Phytoparasitic Lifestyle.Frontiers in genetics · 2022Article
- How Do Smut Fungi Use Plant Signals to Spatiotemporally Orientate on andJournal of fungi (Basel, Switzerland) · 2021Review
- An asexual flower of Silene latifolia and Microbotryum lychnidis-dioicae promotes sex-organ development.PloS one · 2019Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
When Microbotryum lychnidis-dioicae infects a male Silene latifolia, M. lychnidis-dioicae smut spores develop in the pollen sac instead of pollen. In contrast, when M. lychnidis-dioicae infects a female S. latifolia, the female flowers become male-like, promoting stamen formation. However, it is unclear when and how M. lychnidis-dioicae invades the anther. It is important to investigate not only whether hyphae exist when the apical meristem tissue differentiates into flowers and anthers, but also whether hyphae exist when stamen filaments form. We used Grocott's methenamine silver stain and lectin stain, which stain chitin in the fungal cell wall, to search for M. lychnidis-dioicae in flower tissues. A few M. lychnidis-dioicae hyphae were observed intercellularly in the center of the connective of vascular bundles at the early anther developmental stage. Subsequently, large numbers of deeply stained M. lychnidis-dioicae hyphae were observed intercellularly in the cells surrounding the pollen sac, as well as in the center of the pollen sac. Hyphae stained with lectin were observed intercellularly in all of the stamen filaments at flower development stages. Hyphae were observed in the peduncle connecting the flower and stem. It is thought that M. lychnidis-dioicae invaded the anther via the stamen filament over a long period. Additionally, in total, 163 sections of connective were obtained, and the cell structure of each anther was colored and subjected to three-dimensional reconstruction. The M. lychnidis-dioicae hyphae observed in the connective were mainly old hyphae with large vacuoles or dead hyphae (S1 Fig). These hyphae branched out, towards the pollen sac, while growing between the cells. We also observed that the host cells that collapsed near the hyphae had thick cell walls and teliospores. Cell wall collapse and cell degeneration were observed only around hyphae with thick cell walls.
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