Abstract
The combined effects of Rhodobacter sphaeroides solutions (0,15%) and cadmium ion (0,0.5,5,10 and 20 mg·L-1) on several physiological-biochemical indexes of the wheat seedlings leaves were investigated using water culture experiment. The results showed that under cadmium stress, the contents of malonyldialdehyde(MDA)and proline in leaves of wheat seedlings increased, but the activities of superoxide dismutase(SOD)and catalase(CAT)in the wheat seedling leaves decreased with the culture time and the cadmium concentrations increasing. Added Rhodobacter sphaeroides in solutions, the contents of MDA and proline in leaves of wheat seedlings decreased by 2.8%~20.5% and 0.6%~15.2%, and the activities of SOD and CAT increased by 1.6%~59.4% and 1.8%~12.4%, respectively. Low concentration of cadmium (0.5 mg·L-1) promoted the compositions of chlorophyll a, chlorophyll b, carotenoid and total chlorophyll at 5th day, but inhibited them at 11th day. High concentrations of cadmium (0.5 mg·L-1) inhibited the compositions of phytochrome, and this inhibition effect strengthened with the culture time and the cadmium concentrations increasing. The contents of phytochrome in leaves of wheat seedlings with Rhodobacter sphaeroide increased by 1.4%~24.4%, 0.7%~15.4%, 2.4%~13.6% and 1.2%~20.1%, respectively. The results suggested that Rhodobacter sphaeroides could enhance the activities of antioxidant enzyme, reduce the contents of MDA and proline, relieve the lipid peroxidation and increase the contents of phytochrome in wheat leaves under cadmium stress, thus mitigate the damage of cadmium intimidation to wheat seedlings.
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Claims 9
Claim · model-written summary
Cadmium stress increased leaf MDA and proline over culture time and concentration.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- cadmium stresse1
- Outcome
- malonyldialdehyde(MDA)and prolinee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of malonyldialdehyde(MDA)and proline in leaves of wheat seedlings increased”
e1“under cadmium stress, the contents of malonyldialdehyde(MDA)and proline in leaves of wheat seedlings increased, but the activities of superoxide dismutase(SOD)and catalase(CAT)in the wheat seedling leaves decreased”
Claim · model-written summary
Cadmium stress decreased leaf SOD and CAT activities over time and concentration.
- Taxon
- wheatTriticum aestivume0
- Treatment
- cadmium stresse1
- Outcome
- activities of superoxide dismutase(SOD)and catalase(CAT)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of superoxide dismutase(SOD)and catalase(CAT)in the wheat seedling leaves decreased”
e1“under cadmium stress, the contents of malonyldialdehyde(MDA)and proline in leaves of wheat seedlings increased, but the activities of superoxide dismutase(SOD)and catalase(CAT)in the wheat seedling leaves decreased”
Claim · model-written summary
Rhodobacter addition decreased MDA by 2.8%~20.5%.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Rhodobacter sphaeroidest0
- Interactor
- Rhodobacter sphaeroides
Cereibacter sphaeroidest0othere1 - Outcome
- MDAe0
- Direction
- decreasede0
- Value
- 2.8%~20.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of MDA and proline in leaves of wheat seedlings decreased by 2.8%~20.5% and 0.6%~15.2%”
e1“the contents of MDA and proline in leaves of wheat seedlings decreased by 2.8%~20.5% and 0.6%~15.2%”
t0“Rhodobacter sphaeroides on Some Physiological-Biochemical Indexes of Wheat Seedlings”
Claim · model-written summary
Rhodobacter addition decreased proline by 0.6%~15.2%.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Rhodobacter sphaeroidest0
- Interactor
- Rhodobacter sphaeroidesCereibacter sphaeroidest0othere1
- Outcome
- prolinee0
- Direction
- decreasede0
- Value
- 0.6%~15.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of MDA and proline in leaves of wheat seedlings decreased by 2.8%~20.5% and 0.6%~15.2%”
e1“the contents of MDA and proline in leaves of wheat seedlings decreased by 2.8%~20.5% and 0.6%~15.2%”
t0“Rhodobacter sphaeroides on Some Physiological-Biochemical Indexes of Wheat Seedlings”
Claim · model-written summary
Rhodobacter addition increased SOD activity by 1.6%~59.4%.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Rhodobacter sphaeroidest0
- Interactor
- Rhodobacter sphaeroidesCereibacter sphaeroidest0othere0
- Outcome
- SODe0
- Direction
- increasede0
- Value
- 1.6%~59.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of SOD and CAT increased by 1.6%~59.4% and 1.8%~12.4%”
t0“Rhodobacter sphaeroides on Some Physiological-Biochemical Indexes of Wheat Seedlings”
Claim · model-written summary
Rhodobacter addition increased CAT activity by 1.8%~12.4%.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Rhodobacter sphaeroidest0
- Interactor
- Rhodobacter sphaeroidesCereibacter sphaeroidest0othere0
- Outcome
- CATe0
- Direction
- increasede0
- Value
- 1.8%~12.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of SOD and CAT increased by 1.6%~59.4% and 1.8%~12.4%”
t0“Rhodobacter sphaeroides on Some Physiological-Biochemical Indexes of Wheat Seedlings”
Claim · model-written summary
Low cadmium promoted chlorophyll a, chlorophyll b and carotenoid composition on day 5.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- 5th daye0
- Treatment
- cadmium (0.5 mg·L-1)e0
- Outcome
- chlorophyll a, chlorophyll b, carotenoide0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low concentration of cadmium (0.5 mg·L-1) promoted the compositions of chlorophyll a, chlorophyll b, carotenoid and total chlorophyll at 5th day”
t0“Wheat”
Claim · model-written summary
Low cadmium inhibited these pigments on day 11.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- 11th daye0
- Treatment
- cadmiume1
- Outcome
- chlorophyll a, chlorophyll b, carotenoid and total chlorophylle1
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but inhibited them at 11th day”
e1“Low concentration of cadmium (0.5 mg·L-1) promoted the compositions of chlorophyll a, chlorophyll b, carotenoid and total chlorophyll at 5th day, but inhibited them at 11th day.”
t0“Wheat”
Claim · model-written summary
Higher cadmium inhibited phytochrome composition increasingly over time and concentration.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- cadmium (0.5 mg·L-1)e0
- Outcome
- phytochromee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High concentrations of cadmium (0.5 mg·L-1) inhibited the compositions of phytochrome, and this inhibition effect strengthened with the culture time and the cadmium concentrations increasing.”
t0“Wheat”
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