Abstract
Osmotic stress caused by drought and high salinity is the key factor limiting plant growth. However, its underlying molecular regulatory mechanism remains unclear. In this study, we found the stress-related gene Zm00001d019704 (ZmSRG7) based on transcriptome sequencing results previously obtained in the laboratory and determined its biological function in maize. We found that ZmSRG7 was significantly expressed in both roots and leaves under 10% PEG6000 or 150 mM NaCl. Subcellular localization showed that the gene was localized in the nucleus. The germination rate and root length of the ZmSRG7 overexpressing lines were significantly increased under drought or salt stress compared with the control. However, after drought stress, the survival rate and relative water content of maize were increased, while the water loss rate was slowed down. Under salt stress, the Na+ concentration and Na+: K+ ratio of maize was increased. In addition, the contents of antioxidant enzymes and proline in maize under drought or salt stress were higher than those in the control, while the contents of MDA, H2O2 and O2− were lower than those in the control. The results showed that the ZmSRG7 gene played its biological function by regulating the ROS signaling pathway. An interaction between ZmSRG7 and the Zmdhn1 protein was found using a yeast two-hybrid experiment. These results suggest that the ZmSRG7 gene can improve maize tolerance to drought or salt by regulating hydrogen peroxide homeostasis.
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Claims 11
Claim · model-written summary
ZmSRG7 was significantly expressed in roots and leaves under PEG6000 or NaCl.
- Organ / stage
- roots and leavese0
- Treatment
- 10% PEG6000 or 150 mM NaCle0
- Gene
- ZmSRG7e0
- Outcome
- expressede0
- Direction
- significantly expressede0
Not reportedTaxon
Verbatim
e0“ZmSRG7 was significantly expressed in both roots and leaves under 10% PEG6000 or 150 mM NaCl”
Claim · model-written summary
ZmSRG7 localized in the nucleus.
Zea maysNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the gene was localized in the nucleus”
t0“ZmSRG7”
t1“Maize (Zea mays L.)”
Claim · model-written summary
ZmSRG7 overexpression increased germination rate and root length under drought or salt stress.
- Material
- ZmSRG7 overexpressing linese0
- Treatment
- drought or salt stresse0
- Gene
- ZmSRG7e0
- Outcome
- germination rate and root lengthe0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The germination rate and root length of the ZmSRG7 overexpressing lines were significantly increased under drought or salt stress compared with the control”
t0“Maize (Zea mays L.)”
Claim · model-written summary
After drought stress, maize survival rate and relative water content increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after drought stress, the survival rate and relative water content of maize were increased”
Claim · model-written summary
After drought stress, maize water loss rate slowed.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while the water loss rate was slowed down”
t0“Maize (Zea mays L.)”
Claim · model-written summary
Under salt stress maize Na+ concentration and Na+: K+ ratio increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salt stress, the Na+ concentration and Na+: K+ ratio of maize was increased”
Claim · model-written summary
Under drought or salt stress, antioxidant enzymes and proline contents were higher than the control.
- Treatment
- drought or salt stresse0
- Gene
- antioxidant enzymese0
- Outcome
- contents of antioxidant enzymes and prolinee0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of antioxidant enzymes and proline in maize under drought or salt stress were higher than those in the control”
Claim · model-written summary
Under drought or salt stress, MDA, H2O2 and O2− contents were lower than the control.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of MDA, H2O2 and O2− were lower than those in the control”
t0“Maize (Zea mays L.)”
Claim · model-written summary
ZmSRG7 functioned by regulating ROS signaling.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ZmSRG7 gene played its biological function by regulating the ROS signaling pathway”
t0“Maize (Zea mays L.)”
Claim · model-written summary
ZmSRG7 interacted with Zmdhn1 protein in a yeast two-hybrid experiment.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An interaction between ZmSRG7 and the Zmdhn1 protein was found using a yeast two-hybrid experiment”
t0“Maize (Zea mays L.)”
Claim · model-written summary
The authors suggest ZmSRG7 improves maize drought or salt tolerance by regulating hydrogen peroxide homeostasis.
- Gene
- ZmSRG7e0
- Outcome
- tolerance to drought or salte0
- Qualifier
- regulating hydrogen peroxide homeostasise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ZmSRG7 gene can improve maize tolerance to drought or salt by regulating hydrogen peroxide homeostasis”
The same questions in other papers
salinity · physiology: antioxidant enzymes · Zea mays (maize)Results differ
18 papers in the same direction as this paper · 18 in the opposite direction
- negative
- negative
- no effect
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See all 37 papers →drought · physiology: antioxidant enzymes · Zea mays (maize)Results differ
31 papers in the same direction as this paper · 28 in the opposite direction
- negative
- negative
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See all 60 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.