Calcium ions decrease water-soaking in strawberries

Water soaking is a common disorder of field-grown strawberries (Fragaria × ananassa Duch.). It develops when ripe fruit is exposed to rain. Here we investigate the effects of Ca on water soaking. Fruit was incubated in solutions of various Ca salts and the extent of water soaking quantified using a...

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Main Authors: Grecia Hurtado, Moritz Knoche
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2022-01-01
Series:PLoS ONE
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9377631/?tool=EBI
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author Grecia Hurtado
Moritz Knoche
author_facet Grecia Hurtado
Moritz Knoche
author_sort Grecia Hurtado
collection DOAJ
description Water soaking is a common disorder of field-grown strawberries (Fragaria × ananassa Duch.). It develops when ripe fruit is exposed to rain. Here we investigate the effects of Ca on water soaking. Fruit was incubated in solutions of various Ca salts and the extent of water soaking quantified using a simple rating scheme. Exposure to CaCl2 (10 mM) decreased water soaking and anthocyanin leakage but had no effect on water uptake. The decrease in water soaking due to CaCl2 was not limited to a single cultivar but occurred in all cultivars examined. Incubating fruit in a chelating agent (EGTA) increased water soaking compared to the water control. Calcium salts of different acids varied in their effects on water soaking. Only CaCl2 reduced water soaking significantly. The chlorides of different cations, also varied in their effects on water soaking. Those of the monovalent cations had no effects on water soaking, while those of the divalent cations (CaCl2, BaCl2 and SrCl2) and of the trivalent cations (FeCl3 and AlCl3) were all effective in decreasing water soaking. Overall, CaCl2 decreased microcracking of the strawberry cuticle as compared to deionized water. Furthermore, CaCl2 also reduced the leakage of anthocyanins from flesh discs, irrespective of the osmotic potential of the incubation solution. Our results indicate that CaCl2 reduced water soaking by decreasing cuticular microcracking, by decreasing leakage of plasma membranes and, possibly, by increasing the crosslinking of cell wall constituents.
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spelling doaj.art-3a5241ac6aab406cbe14c585d288fc322022-12-22T02:52:20ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01178Calcium ions decrease water-soaking in strawberriesGrecia HurtadoMoritz KnocheWater soaking is a common disorder of field-grown strawberries (Fragaria × ananassa Duch.). It develops when ripe fruit is exposed to rain. Here we investigate the effects of Ca on water soaking. Fruit was incubated in solutions of various Ca salts and the extent of water soaking quantified using a simple rating scheme. Exposure to CaCl2 (10 mM) decreased water soaking and anthocyanin leakage but had no effect on water uptake. The decrease in water soaking due to CaCl2 was not limited to a single cultivar but occurred in all cultivars examined. Incubating fruit in a chelating agent (EGTA) increased water soaking compared to the water control. Calcium salts of different acids varied in their effects on water soaking. Only CaCl2 reduced water soaking significantly. The chlorides of different cations, also varied in their effects on water soaking. Those of the monovalent cations had no effects on water soaking, while those of the divalent cations (CaCl2, BaCl2 and SrCl2) and of the trivalent cations (FeCl3 and AlCl3) were all effective in decreasing water soaking. Overall, CaCl2 decreased microcracking of the strawberry cuticle as compared to deionized water. Furthermore, CaCl2 also reduced the leakage of anthocyanins from flesh discs, irrespective of the osmotic potential of the incubation solution. Our results indicate that CaCl2 reduced water soaking by decreasing cuticular microcracking, by decreasing leakage of plasma membranes and, possibly, by increasing the crosslinking of cell wall constituents.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9377631/?tool=EBI
spellingShingle Grecia Hurtado
Moritz Knoche
Calcium ions decrease water-soaking in strawberries
PLoS ONE
title Calcium ions decrease water-soaking in strawberries
title_full Calcium ions decrease water-soaking in strawberries
title_fullStr Calcium ions decrease water-soaking in strawberries
title_full_unstemmed Calcium ions decrease water-soaking in strawberries
title_short Calcium ions decrease water-soaking in strawberries
title_sort calcium ions decrease water soaking in strawberries
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9377631/?tool=EBI
work_keys_str_mv AT greciahurtado calciumionsdecreasewatersoakinginstrawberries
AT moritzknoche calciumionsdecreasewatersoakinginstrawberries