ArticleJournal of experimental botany2009
Salt stress-induced cell death in the unicellular green alga Micrasterias denticulata.
Article in Journal of experimental botany, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers.
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93 citing papers in PubMed, 260 citations in OpenAlex.
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- Promoting effects of NaCl and KCl stresses on astaxanthin yield inFood chemistry: X · 2025Article
- Multi-Omic Advances in Olive Tree (Biology · 2025Review
- Dynamic molecular regulation of salt stress responses in maize (Frontiers in plant science · 2025Article
- Evolutionary conservation and metabolic significance of autophagy in algae.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024Review
- Salt Tolerance in Sugar Beet: From Impact Analysis to Adaptive Mechanisms and Future Research.Plants (Basel, Switzerland) · 2024Review
- Recent progress in practical applications of a potential carotenoid astaxanthin in aquaculture industry: a review.Fish physiology and biochemistry · 2024Review
- Salt-Induced Early Changes in Photosynthesis Activity Caused by Root-to-Shoot Signaling in Potato.International journal of molecular sciences · 2024Article
- Autophagy in protists and their hosts: When, how and why?Autophagy reports · 2023Article
- Changes in the morphology and cell ultrastructure of a microalgal community exposed to a commercial glyphosate formulation and a toxigenic cyanobacterium.Frontiers in microbiology · 2023Article
- The cell biology of charophytes: Exploring the past and models for the future.Plant physiology · 2022Article
- Saline-alkali stress tolerance is enhanced by MhPR1 in Malus halliana leaves as shown by transcriptomic analyses.Planta · 2022Article
- Phytoplankton Composition and Their Related Factors in Five Different Lakes in China: Implications for Lake Management.International journal of environmental research and public health · 2022Article
- A Novel Algicidal Bacterium,Microbiology spectrum · 2022Article
- Role of Autophagy inPlants (Basel, Switzerland) · 2022Article
- Determination of Caspase-Like Activities in Roots by the Use of Fluorogenic Substrates.Methods in molecular biology (Clifton, N.J.) · 2022Article
- Effect of short-term combined alkaline stress on antioxidant metabolism, photosynthesis, and leaf-air temperature difference in sorghum.Photosynthetica · 2022Article
- Winter survival of the unicellular green alga Micrasterias denticulata: insights from field monitoring and simulation experiments.Protoplasma · 2021Article
- The effects of osmotic stress on the cell wall-plasma membrane domains of the unicellular streptophyte, Penium margaritaceum.Protoplasma · 2021Article
33 more citing papers are in PubMed but not listed here.
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5 authors at 2 institutions in 1 country.
Funding
Abstract
Programmed cell death (PCD) is a key element in normal plant growth and development which may also be induced by various abiotic and biotic stress factors including salt stress. In the present study, morphological, biochemical, and physiological responses of the theoretically immortal unicellular freshwater green alga Micrasterias denticulata were examined after salt (200 mM NaCl or 200 mM KCl) and osmotic stress induced by iso-osmotic sorbitol. KCl caused morphological changes such as cytoplasmic vacuolization, extreme deformation of mitochondria, and ultrastructural changes of Golgi and ER. However, prolonged salt stress (24 h) led to the degradation of organelles by autophagy, a special form of PCD, both in NaCl- and KCl-treated cells. This was indicated by the enclosure of organelles by ER-derived double membranes. DNA of NaCl- and KCl-stressed cells but not of sorbitol-treated cells showed a ladder-like pattern on agarose gel, which means that the ionic rather than the osmotic component of salt stress leads to the activation of the responsible endonuclease. DNA laddering during salt stress could be abrogated by addition of Zn(2+). Neither cytochrome c release from mitochondria nor increase in caspase-3-like activity occurred after salt stress. Reactive oxygen species could be detected within 5 min after the onset of salt and osmotic stress. Respiration, photosynthetic activity, and pigment composition indicated an active metabolism which supports programmed rather than necrotic cell death in Micrasterias after salt stress.
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