Abstract
Subcellular localization of dehydrins (dhn) in stem cell tissues of winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya) was studied by immunoelectron microscopy. It was found that cold hardening at 4°C for 7 days resulted in a duplication of the dhn quantity in the cells as compared with control conditions (22°C). The maximum increase of the dhn content was observed in rough endoplasmic reticulum, mitochondria, cell walls, and intercellular spaces (3.8-, 3.0- and 2.8-fold, respectively); minimum increase was found in chloroplasts (1.4-fold). In the membrane compartments (mitochondria, rough endoplasmic reticulum, chloroplasts) low-temperature stress caused an increase of dhn quantity not only near membranes but also in the intermembrane space. A significant accumulation of dhn (2.5-fold) in the nucleus under low- temperature was found. We conclude that cold hardening of the plant induces accumulation and translocation of dhn to the regions of inter- and intracellular compartments that most require protection during the low-temperature stress.
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Claims 6
Claim · model-written summary
Cold hardening at 4°C for 7 days duplicated the dehydrin quantity in wheat cells compared with control conditions at 22°C.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- cold hardening at 4°C for 7 dayse1
- Outcome
- dhn quantitye1
- Direction
- duplicatione1
- Comparator
- control conditions (22°C)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya)”
e1“cold hardening at 4°C for 7 days resulted in a duplication of the dhn quantity in the cells as compared with control conditions (22°C)”
Claim · model-written summary
Cold hardening gave the maximum increase in dhn content in rough endoplasmic reticulum, mitochondria, cell walls and intercellular spaces relative to controls.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- rough endoplasmic reticulum, mitochondria, cell walls, and intercellular spacese2
- Treatment
- cold hardeninge1
- Outcome
- dhn contente2
- Direction
- increasee2
- Qualifier
- 3.8-, 3.0- and 2.8-fold, respectivelye2
- Comparator
- control conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya)”
e1“cold hardening at 4°C for 7 days resulted in a duplication of the dhn quantity in the cells as compared with control conditions (22°C)”
e2“The maximum increase of the dhn content was observed in rough endoplasmic reticulum, mitochondria, cell walls, and intercellular spaces (3.8-, 3.0- and 2.8-fold, respectively); minimum increase was found in chloroplasts (1.4-fold)”
Claim · model-written summary
Cold hardening gave the minimum increase in dhn content in chloroplasts, 1.4-fold relative to controls.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- chloroplastse2
- Treatment
- cold hardeninge1
- Outcome
- dhn contente2
- Direction
- increasee2
- Value
- 1.4-folde2
- Comparator
- control conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya)”
e1“cold hardening at 4°C for 7 days resulted in a duplication of the dhn quantity in the cells as compared with control conditions (22°C)”
e2“The maximum increase of the dhn content was observed in rough endoplasmic reticulum, mitochondria, cell walls, and intercellular spaces (3.8-, 3.0- and 2.8-fold, respectively); minimum increase was found in chloroplasts (1.4-fold)”
Claim · model-written summary
Low-temperature stress caused a significant 2.5-fold accumulation of dhn in the nucleus of winter wheat seedlings.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- nucleuse3
- Treatment
- low- temperaturee3
- Outcome
- dhne3
- Direction
- accumulatione3
- Value
- 2.5-folde3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya)”
e3“A significant accumulation of dhn (2.5-fold) in the nucleus under low- temperature was found”
Claim · model-written summary
The authors conclude that cold hardening induces accumulation and translocation of dhn to inter- and intracellular compartments that most need protection during low-temperature stress.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- cold hardening of the plante4
- Outcome
- accumulation and translocation of dhne4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya)”
e4“We conclude that cold hardening of the plant induces accumulation and translocation of dhn to the regions of inter- and intracellular compartments that most require protection during the low-temperature stress”
Claim · model-written summary
Low-temperature stress caused an increase of dhn quantity in the intermembrane space, not only near membranes.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- intermembrane spacee5
- Treatment
- low-temperature stresse5
- Outcome
- dhn quantitye5
- Direction
- increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter wheat seedlings ( Triticulum aestivum L., cult. Irkutskaya ozimaya)”
e5“In the membrane compartments (mitochondria, rough endoplasmic reticulum, chloroplasts) low-temperature stress caused an increase of dhn quantity not only near membranes but also in the intermembrane space”
The same questions in other papers
in vitro · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
12 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
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See all 17 papers →cold · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
26 papers in the same direction as this paper · 24 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- no effect
- negative
49 papers more in this group
See all 53 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.