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פותח על ידי קלירמאש פתרונות בע"מ -
Strontium as a tracer for calcium: uptake, transport and partitioning within tomato plants
Year:
2021
Source of publication :
Plant and Soil
Authors :
אראל, רן
;
.
Volume :
466
Co-Authors:
  • Petar Jovanović, 
  • Shimon Rachmilevitch, 
  • Noam Roitman & 
  • Ran Erel
Facilitators :
From page:
303
To page:
316
(
Total pages:
14
)
Abstract:

Purpose
Calcium (Ca2+) is a major structural plant nutrient whose low mobility in the phloem causes deleterious nutritional disorders in non-transpiring organs. Since strontium (Sr2+) and Ca2+ share many chemical properties, Sr2+ is frequently used as a tracer to study Ca2+ cycles in ecosystems. However, the level of agreement between Sr2+ and Ca2+ distribution pattern in plants is debatable, and several studies have reported toxic effects of Sr2+. Therefore, we investigated Sr2+ and Ca2+ uptake rates and distribution pattern to determine how reliably Sr2+ can be used as a tracer of Ca2+ in tomato plants (Solanum lycopersicum L.).
 

Methods
We conducted six independent experiments of various duration: from a few hours to several weeks, in hydroponic and perlite substrate. We treated plants with either Ca2+ or Sr2+ at equivalent concentrations and monitored their accumulation in shoot and fruits.


Results
Under short-term exposure (hours), Ca2+ and Sr2+ uptake and distribution within the plant were comparable, while the long-term exposure (days and weeks) to 4 mM Sr2+ reduced transpiration and biomass accumulation. The toxic effect of Sr2+ was more prominent when growth conditions were favourable. Nonetheless, Sr2+ accumulated similarly to Ca2+ in shoot and fruit. Surprisingly, Sr2+ deposition in tomato fruit cell walls prevented blossom end rot (BER) to the same degree as Ca2+.


Conclusion
Sr2+ can credibly be used as a tracer of Ca2+ uptake and allocation in the short-term, making Sr2+ a powerful tool to study the factors governing Ca2+ allocation to plant organs, primarily fruit Ca2+ delivery.

Note:
Related Files :
blossom end rot
calcium
Strontium
tomato
Tracer
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/s11104-021-05024-6
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
56417
Last updated date:
02/03/2022 17:27
Creation date:
04/10/2021 13:29
Scientific Publication
Strontium as a tracer for calcium: uptake, transport and partitioning within tomato plants
466
  • Petar Jovanović, 
  • Shimon Rachmilevitch, 
  • Noam Roitman & 
  • Ran Erel
Strontium as a tracer for calcium: uptake, transport and partitioning within tomato plants

Purpose
Calcium (Ca2+) is a major structural plant nutrient whose low mobility in the phloem causes deleterious nutritional disorders in non-transpiring organs. Since strontium (Sr2+) and Ca2+ share many chemical properties, Sr2+ is frequently used as a tracer to study Ca2+ cycles in ecosystems. However, the level of agreement between Sr2+ and Ca2+ distribution pattern in plants is debatable, and several studies have reported toxic effects of Sr2+. Therefore, we investigated Sr2+ and Ca2+ uptake rates and distribution pattern to determine how reliably Sr2+ can be used as a tracer of Ca2+ in tomato plants (Solanum lycopersicum L.).
 

Methods
We conducted six independent experiments of various duration: from a few hours to several weeks, in hydroponic and perlite substrate. We treated plants with either Ca2+ or Sr2+ at equivalent concentrations and monitored their accumulation in shoot and fruits.


Results
Under short-term exposure (hours), Ca2+ and Sr2+ uptake and distribution within the plant were comparable, while the long-term exposure (days and weeks) to 4 mM Sr2+ reduced transpiration and biomass accumulation. The toxic effect of Sr2+ was more prominent when growth conditions were favourable. Nonetheless, Sr2+ accumulated similarly to Ca2+ in shoot and fruit. Surprisingly, Sr2+ deposition in tomato fruit cell walls prevented blossom end rot (BER) to the same degree as Ca2+.


Conclusion
Sr2+ can credibly be used as a tracer of Ca2+ uptake and allocation in the short-term, making Sr2+ a powerful tool to study the factors governing Ca2+ allocation to plant organs, primarily fruit Ca2+ delivery.

Scientific Publication
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