ArticlePlant molecular biology2001
Organ specificity of a vacuolar Ca2+-binding protein RVCaB in radish and its expression under Ca2+-deficient conditions.
Article in Plant molecular biology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 17 citations in OpenAlex.
- Expression of developmentally regulated plasma membrane polypeptide (DREPP2) in rice root tip and interaction with Ca(2+)/CaM complex and microtubule.Protoplasma · 2015Article
- Plant organellar calcium signalling: an emerging field.Journal of experimental botany · 2012Review
- Comparative physiology of elemental distributions in plants.Annals of botany · 2010Review
- Molecular characterization of a cDNA encoding putative calcium binding protein, HvCaBP1, induced during kernel development in barley (Hordeum vulgare L.).Plant cell reports · 2003Article
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Authors and funding
2 authors at 1 institution in 1 country.
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Abstract
Radish vacuoles contain a new type of Ca2+-binding protein (RVCaB) with high capacity and low affinity for Ca2+. The protein is able to stimulate Ca2+ uptake into vacuoles, which is driven by Ca2+-ATPase and Ca2+/H+ antiporter. In the present study, we found that the level of RVCaB mRNA is high in seedling hypocotyls and mature taproots but low in young roots and mature leaves. The RVCaB protein was abundant in hypocotyls and taproots but absent in leaves. The levels of the transcript and protein of RVCaB in taproots were gradually increased during maturation. The level of RVCaB mRNA in seedling hypocotyls doubled within a few hours when the growth medium was changed from 10 mM CaCl2 to water, although the level was strongly suppressed in 100 mM CaCl2. This response of the RVCaB gene was specific to Ca2+ and did not occur with other ions including K+ and Mg2+. RVCaB functioning as a Ca2+-sequestering protein in taproot vacuoles to provide for the Ca2+ deficiency is discussed.
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