Abstract
Using rain proof installations, a systematic study was conducted to determine the effects of water stress on protective enzyme activities and lipid peroxidation. The results showed that, under water stress, activities of superoxide dismutase(SOD), catalase(CAT), and peoxidase(POD) in leaves and roots increased sharply at prophase and metaphase such as male tetrad stage, while declined at the evening growth stages such as milky stage. Different responses of maize to water stress under field conditions were found at different growing stages. At the stage of male tetrad and the pre-tasselling, the mechanism of response to drought is active, while at the stage of filling and milking is forbearing negatively. The protective enzyme activities in roots are lower than that in leaves, but the sensitive degree of these enzymes to water stress is different. SOD activities are less sensitive under drought stress compared with other protective enzymes. The content of malondialdehyde (MDA) is increased under stronger water stress, and the content of MDA in roots is lower than that in leaves. The soluble protein in roots and leaves is decreased under water stress. The protective enzyme activities and lipid peroxidation in roots are positively related to that in leaf, showing significant difference for most of correlation coefficients.
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Claims 10
Claim · model-written summary
Water stress sharply increased SOD, CAT and POD activities in maize leaves and roots at early and middle stages.
- Organ / stage
- leaves and rootse0
- Treatment
- water stresse0
- Outcome
- activities of superoxide dismutase(SOD), catalase(CAT), and peoxidase(POD)e0
- Direction
- increased sharplye0
- Qualifier
- at prophase and metaphase such as male tetrad stagee0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under water stress, activities of superoxide dismutase(SOD), catalase(CAT), and peoxidase(POD) in leaves and roots increased sharply at prophase and metaphase such as male tetrad stage”
t0“summer maize”
Claim · model-written summary
Maize protective enzyme activities declined at late growth stages under water stress.
- Organ / stage
- leaves and rootse0
- Treatment
- water stresse0
- Outcome
- activities of superoxide dismutase(SOD), catalase(CAT), and peoxidase(POD)e0
- Direction
- declinede0
- Qualifier
- evening growth stages such as milky stagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under water stress, activities of superoxide dismutase(SOD), catalase(CAT), and peoxidase(POD) in leaves and roots increased sharply at prophase and metaphase such as male tetrad stage, while declined at the evening growth stages such as milky stage.”
t0“summer maize”
Claim · model-written summary
Maize drought response was active at male tetrad and pre-tasselling stages.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the stage of male tetrad and the pre-tasselling, the mechanism of response to drought is active”
t0“summer maize”
Claim · model-written summary
Maize drought response at filling and milking stages was interpreted as passive endurance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while at the stage of filling and milking is forbearing negatively.”
t0“summer maize”
Claim · model-written summary
Maize root protective enzyme activities were lower than leaf activities.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protective enzyme activities in roots are lower than that in leaves”
t0“summer maize”
Claim · model-written summary
SOD activity was less sensitive to drought than other maize protective enzymes.
- Treatment
- drought stresse0
- Gene
- SODe0
- Outcome
- SOD activitiese0
- Direction
- less sensitivee0
- Comparator
- other protective enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD activities are less sensitive under drought stress compared with other protective enzymes.”
t0“summer maize”
Claim · model-written summary
Stronger water stress increased maize malondialdehyde content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of malondialdehyde (MDA) is increased under stronger water stress”
t0“summer maize”
Claim · model-written summary
Maize MDA content was lower in roots than leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of MDA in roots is lower than that in leaves.”
t0“summer maize”
Claim · model-written summary
Water stress decreased soluble protein in maize roots and leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soluble protein in roots and leaves is decreased under water stress.”
t0“summer maize”
Claim · model-written summary
Maize root protective enzyme activities and lipid peroxidation were positively related to those in leaves, with most correlation coefficients significant.
- Organ / stage
- rootse0
- Outcome
- protective enzyme activities and lipid peroxidatione0
- Qualifier
- most of correlation coefficientse0
- Comparator
- leafe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protective enzyme activities and lipid peroxidation in roots are positively related to that in leaf, showing significant difference for most of correlation coefficients.”
t0“summer maize”
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See all 96 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.