Abstract
The effect of water deficit caused by soil drought on the content of free proline as well as the degree of cell membrane damages in the leaves of three cultivated plant species having different farm usefulness and water requirements have been studied. The used pIants were: poinsettia (Euphorbia pulcherrima Willd., 'Regina' and 'Cortez') grown for decorative purposes, a green vegetable of broccoli (Brassica oleracea var. botrytis, subvar. cymosa, 'Colonel' and 'Marathon') and a cereal plant of barley (the wild form Hordeum spontaneumm and Hordeum vulgaree 'Maresi'). The examined species differed in the size of the experienced stress. the Iargest RWC reduction was found iii broccoli leaves, while somewhat smaller - in barley. In poinsettia leaves, the reduction of RWC level was not large or did not occur at all. The accumulation of free proline in the species under study was also variable. The largest amount of this amino acid tended to accumulate in broccoli leaves, whereas the increase of its level took place only at a strong dehydration of tissues. The increase of proline level was smaller in barley leaves than in broccoli, but that was found already at a smalI dehydration of tissues. In poinsettia leaves, a several f`old increase of proline level was found at the early stage of the stress. The level of that amino acid gradually increased at consecutive times and did not depend on tissue dehydration. Damage of cell membranes amounted to 8.5-9.5% in barley leaves, about 3% in brocolli and to 0-2.6% in poinsettia. The role of proline in prevention of leaf dehydration and in alleviation of dehydration effects in the studied species has been discussed.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
The largest relative water content reduction under water deficit was in broccoli leaves, somewhat smaller in barley.
- Taxon
- broccoli
Brassica oleracea var. italicae0 - Organ / stage
- leavese4
- Treatment
- water deficit caused by soil droughte2
- Outcome
- RWCe4
- Direction
- reductione4
- Comparator
- barleye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green vegetable of broccoli (Brassica oleracea var. botrytis, subvar. cymosa, 'Colonel' and 'Marathon')”
e2“water deficit caused by soil drought”
e4“the Iargest RWC reduction was found iii broccoli leaves, while somewhat smaller - in barley”
Claim · model-written summary
In poinsettia leaves under water deficit, the relative water content reduction was not large or did not occur at all.
- Taxon
- poinsettia
_04.jpg?width=60)
Euphorbia pulcherrimae1 - Organ / stage
- leavese5
- Treatment
- water deficit caused by soil droughte2
- Outcome
- reduction of RWC levele5
- Qualifier
- not large or did not occur at alle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_04.jpg?width=500)
Verbatim
e1“poinsettia (Euphorbia pulcherrima Willd., 'Regina' and 'Cortez') grown for decorative purposes”
e2“water deficit caused by soil drought”
e5“In poinsettia leaves, the reduction of RWC level was not large or did not occur at all”
Claim · model-written summary
Broccoli leaves tended to accumulate the largest amount of free proline under water deficit, with the increase only at strong dehydration.
- Taxon
- broccoliBrassica oleracea var. italicae6
- Treatment
- water deficit caused by soil droughte2
- Compound
- free prolinee7
- Outcome
- amount of this amino acide6
- Direction
- accumulatee6
- Qualifier
- only at a strong dehydration of tissuese6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a green vegetable of broccoli (Brassica oleracea var. botrytis, subvar. cymosa, 'Colonel' and 'Marathon')”
e2“water deficit caused by soil drought”
e6“The largest amount of this amino acid tended to accumulate in broccoli leaves, whereas the increase of its level took place only at a strong dehydration of tissues”
e7“The accumulation of free proline in the species under study was also variable”
Claim · model-written summary
The proline level increase in barley leaves was smaller than in broccoli and was found already at small dehydration.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree3 - Organ / stage
- leavese3
- Treatment
- water deficit caused by soil droughte2
- Outcome
- proline levele3
- Direction
- increasee3
- Qualifier
- found already at a smalI dehydration of tissuese3
- Comparator
- broccolie3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e2“water deficit caused by soil drought”
e3“The increase of proline level was smaller in barley leaves than in broccoli, but that was found already at a smalI dehydration of tissues”
Claim · model-written summary
Poinsettia leaves showed a several-fold increase of proline level at the early stage of stress.
- Taxon
- poinsettiaEuphorbia pulcherrimae3
- Organ / stage
- leavese3
- Treatment
- water deficit caused by soil droughte2
- Compound
- free prolinee7
- Outcome
- proline levele3
- Direction
- increasee3
- Value
- several f`olde3
- Qualifier
- at the early stage of the stresse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“water deficit caused by soil drought”
e7“The accumulation of free proline in the species under study was also variable”
e3“In poinsettia leaves, a several f`old increase of proline level was found at the early stage of the stress”
Claim · model-written summary
The proline level in poinsettia increased gradually over consecutive times, independent of tissue dehydration.
- Taxon
- poinsettiaEuphorbia pulcherrimae1
- Treatment
- water deficit caused by soil droughte2
- Outcome
- level of that amino acide3
- Direction
- gradually increasede3
- Qualifier
- did not depend on tissue dehydratione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“poinsettia (Euphorbia pulcherrima Willd., 'Regina' and 'Cortez') grown for decorative purposes”
e2“water deficit caused by soil drought”
e3“The level of that amino acid gradually increased at consecutive times and did not depend on tissue dehydration”
Claim · model-written summary
Cell membrane damage in barley leaves amounted to 8.5-9.5%.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- leavese0
- Outcome
- Damage of cell membranese0
- Value
- 8.5-9.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Damage of cell membranes amounted to 8.5-9.5% in barley leaves, about 3% in brocolli and to 0-2.6% in poinsettia”
Claim · model-written summary
Cell membrane damage in broccoli amounted to about 3%.
Verbatim
e0“Damage of cell membranes amounted to 8.5-9.5% in barley leaves, about 3% in brocolli and to 0-2.6% in poinsettia”
Claim · model-written summary
Cell membrane damage in poinsettia amounted to 0-2.6%.
- Taxon
- poinsettiaEuphorbia pulcherrimae0
- Outcome
- Damage of cell membranese0
- Value
- 0-2.6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Damage of cell membranes amounted to 8.5-9.5% in barley leaves, about 3% in brocolli and to 0-2.6% in poinsettia”
The same questions in other papers
drought · physiology: osmolytes · Hordeum vulgare (barley)Results differ
7 papers in the same direction as this paper · 3 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- negative
8 papers more in this group
See all 12 papers →drought · molecular: metabolites · Brassica oleracea (wild cabbage)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
drought · physiology: water · Brassica oleracea (wild cabbage)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
3 papers more in this group
See all 7 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.