ArticleProceedings of the National Academy of Sciences of the United States of America1993
Calsequestrinlike calcium-binding protein is expressed in calcium-accumulating cells of Pistia stratiotes.
Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 35 citations in OpenAlex.
- Circular cell clusters and calcium oxalate crystals: critical players in Solanaceae anther dehiscence.Planta · 2025Review
- Calsequestrin: a well-known but curious protein in skeletal muscle.Experimental & molecular medicine · 2020Review
- Alarm Photosynthesis: Calcium Oxalate Crystals as an Internal CO2 Source in Plants.Plant physiology · 2016Article
- Development of secretory cells and crystal cells in Eichhornia crassipes ramet shoot apex.Protoplasma · 2011Article
- Calcium channels are involved in calcium oxalate crystal formation in specialized cells of Pistia stratiotes L.Annals of botany · 2004Article
- Isolation of a crystal matrix protein associated with calcium oxalate precipitation in vacuoles of specialized cells.Plant physiology · 2003Article
- The calcium-binding activity of a vacuole-associated, dehydrin-like protein is regulated by phosphorylation.Plant physiology · 2002Article
- Different myrosinase and idioblast distribution in Arabidopsis and Brassica napus.Plant physiology · 2001Article
- Isolation of Medicago truncatula mutants defective in calcium oxalate crystal formation.Plant physiology · 2000Article
- Cell-mediated crystallization of calcium oxalate in plantsThe Plant cell · 1999Article
- Evidence that spinach leaves express calreticulin but not calsequestrin.Plant physiology · 1995Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To contend with high calcium (Ca) levels in the environment, many plant species contain crystal idioblasts, specialized cells which accumulate large amounts of Ca as oxalate crystals. The biochemical processes involved in the accumulation of Ca in crystal idioblasts are unknown, as these cells constitute only a minor proportion of the total plant tissue. To address how crystal idioblasts buffer cytosolic Ca during crystal formation, we purified these cells from water lettuce and assessed their biochemistry. We show here that crystal idioblast cells contain three Ca-binding proteins not detectable in mesophyll cells. One of the Ca-binding proteins shares antigenicity with rabbit calsequestrin, a high-capacity low-affinity Ca-binding protein, and is encoded by related nucleotide sequences. Immunocytochemical localization studies further demonstrate that a calsequestrinlike protein is present primarily in crystal idioblasts and is preferentially localized in the endoplasmic reticulum, an organelle enriched in Ca as evidenced by vital staining. We thus conclude that crystal idioblasts possess a buffering system involving calsequestrinlike proteins, a process that likely plays an essential role in the bulk control of Ca in plant cells.
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