Abstract
【Objective】 The physiological responses of grape roots under CdCl2 treatment were investigated for exploring the difference of endurance to CdCl2 stress among cultivars of grape.【Method】 The experiment was carried out with the cutting seedlings of nine grape cultivars under 0.5 mmol.L-1CdCl2 stress via hydroponics.The changes in the activity of root,the activity of H+-ATPase in plasma membrane(PM) and the malondialdehyde(MDA) content of roots after CdCl2 treatment were studied.【Result】 The results showed that the root activities of the nine cultivars under normal circumstances was in the order as below: Muscat HamburgKyohoGuibaoAutumn RoyalQtilia SeedlessZanaRed GlobeZexiangTamina.After being treated in 0.5 mmol?L-1 CdCl2 for 16 hours,the root activity of all the cultivars decreased and the decrease range according to the order from high to low as follow: KyohoAutumn RoyalMuscat HamburgGuibaoRed GlobeZanaTaminaZexiangQtilia Seedless.The activity of PM H+-ATPase in root of all the cultivars decreased and the root MDA content increased after treatment of CdCl2.Among the nine grape cultivars,Kyoho presented the greatest decrease in the activity of PM H+-ATPase and the greatest increase in its MDA content,while Qtilia Seedless presented the greatest increase in its MDA content.【Conclusion】 The sensitivity and endurance of grape roots to the CdCl2 stress were different significantly among different cultivars.The root activity and PM H+-ATPase activity of Kyoho was the most sensitive to cadmium and Kyoho was the most affected by cadmium stress among the nine cultivars,while the root activity of Qtilia Seedless has better endurance to the CdCl2 stress than that of other cultivars and was the least sensitive to CdCl2 treatment.
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Claims 9
Claim · model-written summary
Untreated grape cultivar root activity followed the stated rank order.
Verbatim
e0“root activities of the nine cultivars under normal circumstances was in the order as below: Muscat HamburgKyohoGuibaoAutumn RoyalQtilia SeedlessZanaRed GlobeZexiangTamina”
t0“grape”
Claim · model-written summary
CdCl2 decreased root activity in all nine cultivars.
Not reportedComparator
Verbatim
e0“root activity of all the cultivars decreased”
t0“grape roots under CdCl2 stress.”
Claim · model-written summary
CdCl2 decreased root plasma membrane H+-ATPase activity in all cultivars.
- Taxon
- grapet0
- Treatment
- CdCl2e0
- Gene
- PM H+-ATPasee0
- Outcome
- activity of PM H+-ATPase in roote0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“The activity of PM H+-ATPase in root of all the cultivars decreased and the root MDA content increased after treatment of CdCl2”
t0“grape”
Claim · model-written summary
CdCl2 increased root MDA content in all cultivars.
Not reportedComparator
Verbatim
e0“The activity of PM H+-ATPase in root of all the cultivars decreased and the root MDA content increased after treatment of CdCl2”
t0“grape”
Claim · model-written summary
Kyoho had the greatest fall in H+-ATPase activity.
Verbatim
e0“Kyoho presented the greatest decrease in the activity of PM H+-ATPase”
t0“grape”
Claim · model-written summary
Kyoho had the greatest MDA increase according to one result statement.
Verbatim
e0“Kyoho presented the greatest decrease in the activity of PM H+-ATPase and the greatest increase in its MDA content”
t0“grape”
Claim · model-written summary
Qtilia Seedless also was described as showing the greatest MDA increase.
Verbatim
e0“Qtilia Seedless presented the greatest increase in its MDA content”
t0“grape”
Claim · model-written summary
Kyoho was most sensitive to cadmium stress.
Verbatim
e0“Kyoho was the most affected by cadmium stress among the nine cultivars”
t0“grape”
Claim · model-written summary
Qtilia Seedless root activity had the best CdCl2 endurance.
Verbatim
e0“root activity of Qtilia Seedless has better endurance to the CdCl2 stress than that of other cultivars”
t0“grape”
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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.