Abstract
In this paper we intended to find the effect of the complexation of heavy metals with various forms of sulfur on the content of chlorophyll pigments in dwarf beans (Phaseolus vulgaris var. Compressius ellipticus). The effect of two heavy metals, cadmium and respectively lead, in different concentrations, on the content of chlorophyll pigments in the leaves of beans plantlets, by extracting the pigments by the hot process. These were the variants: V 1 Cd 1mg/l, V 2 Cd 1mg/l + 100mg Cys, V 3 Cd 1mg/l + 100mgK 2 SO 4 , V 4 Cd 50mg/l, V 5 Cd 50mg/l+100mg Cys, V 6 Cd 50mg/l+100mgK 2 SO 4 , V 7 Pb 1mg/l, V 8 Pb 1mg/l+100mg Cys, V 9 Pb 1mg/l+100mg K 2 SO 4 , V 10 Pb 50mg/l, V 11 Pb 50mg/l+100mg Cys, V 12 Pb 50mg/l+100mg K 2 SO 4 , V 13 -control sample. Following the experimental research, we can state that the contents of chlorophyll pigments in leaves is negatively influenced by organic sulfur (cysteine) and positively influenced by inorganic sulfur (K 2 SO 4 ), towards inhibition and, respectively, stimulation. Cysteine inhibits with 7% at high concentration of Cd (50mg/l), and K 2 SO 4 stimulates with 1.2% at the same concentration of Cd. In case of Pb (1 mg/l), cysteine inhibits it with 5%, and inorganic sulfur with 1% less as the control. Inorganic sulfur in combination with high concentration of Pb stimulates the pigments production in leaves with 3% more than the control, and concentrated Cd inhibits it with 15%.
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Claims 8
Claim · model-written summary
Organic sulfur inhibited bean leaf chlorophyll pigments.
- Taxon
- beanst0
- Treatment
- organic sulfur (cysteine)e0
- Outcome
- contents of chlorophyll pigments in leavese0
- Direction
- negatively influencede0
Not reportedComparator
Verbatim
e0“the contents of chlorophyll pigments in leaves is negatively influenced by organic sulfur (cysteine)”
t0“Beans”
Claim · model-written summary
Inorganic sulfur stimulated bean leaf chlorophyll pigments.
- Taxon
- beanst0
- Treatment
- inorganic sulfur (K 2 SO 4 )e0
- Outcome
- chlorophyll pigmentst0
- Direction
- positively influencede0
Not reportedComparator
Verbatim
e0“positively influenced by inorganic sulfur (K 2 SO 4 ), towards inhibition and, respectively, stimulation”
t0“Chlorophyll Pigments in Beans”
Claim · model-written summary
Cysteine inhibited chlorophyll by 7% under 50mg/l Cd.
- Taxon
- beanst0
- Treatment
- Cysteinee0
- Outcome
- Chlorophyll Pigmentst0
- Direction
- inhibitse0
- Value
- 7%e0
- Qualifier
- high concentration of Cd (50mg/l)e0
Not reportedComparator
Verbatim
e0“Cysteine inhibits with 7% at high concentration of Cd (50mg/l)”
t0“Chlorophyll Pigments in Beans”
Claim · model-written summary
K 2 SO 4 stimulated chlorophyll by 1.2% under the same Cd concentration.
- Taxon
- beanst0
- Treatment
- K 2 SO 4e0
- Outcome
- Chlorophyll Pigmentst0
- Direction
- stimulatese0
- Value
- 1.2%e0
- Qualifier
- same concentration of Cde0
Not reportedComparator
Verbatim
e0“K 2 SO 4 stimulates with 1.2% at the same concentration of Cd”
t0“Chlorophyll Pigments in Beans”
Claim · model-written summary
Cysteine inhibited chlorophyll by 5% with 1 mg/l Pb.
- Taxon
- beanst0
- Treatment
- cysteinee0
- Outcome
- Chlorophyll Pigmentst0
- Direction
- inhibitse0
- Value
- 5%e0
- Qualifier
- Pb (1 mg/l)e0
Not reportedComparator
Verbatim
e0“In case of Pb (1 mg/l), cysteine inhibits it with 5%”
t0“Chlorophyll Pigments in Beans”
Claim · model-written summary
Inorganic sulfur yielded 1% less chlorophyll than control with 1 mg/l Pb.
Verbatim
e0“inorganic sulfur with 1% less as the control”
t0“Chlorophyll Pigments in Beans”
Claim · model-written summary
Inorganic sulfur with high Pb increased pigments by 3% versus control.
Verbatim
e0“Inorganic sulfur in combination with high concentration of Pb stimulates the pigments production in leaves with 3% more than the control”
t0“Beans”
Claim · model-written summary
Concentrated Cd inhibited pigments by 15%.
Not reportedComparator
Verbatim
e0“concentrated Cd inhibits it with 15%”
t0“Chlorophyll Pigments in Beans”
The same questions in other papers
cadmium atom · physiology: pigments · Phaseolus vulgaris (common bean)Results differ
6 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
4 papers more in this group
See all 8 papers →sulfur atom · physiology: pigments · Phaseolus vulgaris (common bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
lead atom · physiology: pigments · Phaseolus vulgaris (common bean)Positive and negative results
2 in the opposite direction
- negative
- negative
cysteine · physiology: pigments · Phaseolus vulgaris (common bean)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.