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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/ert364
|2 doi
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|a pubmed24n1342.xml
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|a (DE-627)NLM232553270
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|a (NLM)24220654
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|a DE-627
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|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Tonetto de Freitas, Sergio
|e verfasserin
|4 aut
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|a Calcium partitioning and allocation and blossom-end rot development in tomato plants in response to whole-plant and fruit-specific abscisic acid treatments
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 26.09.2014
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|a Date Revised 23.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The mechanisms regulating Ca(2+) partitioning and allocation in plants and fruit remain poorly understood. The objectives of this study were to determine Ca(2+) partitioning and allocation in tomato plants and fruit in response to whole-plant and fruit-specific abscisic acid (ABA) treatments, as well as to analyse the effect of changes in Ca(2+) partitioning and allocation on fruit susceptibility to the Ca(2+) deficiency disorder blossom-end rot (BER) under water stress conditions. Tomato plants of the cultivar Ace 55 (Vf) were grown in a greenhouse and exposed to low Ca(2+) conditions during fruit growth and development. Starting 1 day after pollination (DAP), the following treatments were initiated: (i) whole plants were sprayed weekly with deionized water (control) or (ii) with 500mg l(-1) ABA; or fruit on each plant were dipped weekly (iii) in deionized water (control) or (iv) in 500mg l(-1) ABA. At 15 DAP, BER was completely prevented by whole-plant or fruit-specific ABA treatments, whereas plants or fruit treated with water had 16-19% BER incidence. At 30 DAP, BER was prevented by the whole-plant ABA treatment, whereas fruit dipped in ABA had a 16% and water-treated plants or fruit had a 36-40% incidence of BER. The results showed that spraying the whole plant with ABA increases xylem sap flow and Ca(2+) movement into the fruit, resulting in higher fruit tissue and water-soluble apoplastic Ca(2+) concentrations that prevent BER development. Although fruit-specific ABA treatment had no effect on xylem sap flow rates or Ca(2+) movement into the fruit, it increased fruit tissue water-soluble apoplastic Ca(2+) concentrations and reduced fruit susceptibility to BER to a lesser extent
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|a Comparative Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a ABA
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|a apoplast
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|a blossom-end rot
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|a leakage
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|a membrane
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|a xylem sap.
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| 650 |
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|a Abscisic Acid
|2 NLM
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| 650 |
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|a 72S9A8J5GW
|2 NLM
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| 650 |
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|a Calcium
|2 NLM
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| 650 |
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|a SY7Q814VUP
|2 NLM
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| 700 |
1 |
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|a McElrone, Andrew J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shackel, Kenneth A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mitcham, Elizabeth J
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 65(2014), 1 vom: 13. Jan., Seite 235-47
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:65
|g year:2014
|g number:1
|g day:13
|g month:01
|g pages:235-47
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|u http://dx.doi.org/10.1093/jxb/ert364
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|d 65
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|h 235-47
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