Abstract
Ascorbate-glutathione cycle is an important pathway for plants to scavenge reactive oxygen species (ROS) under environmental stress conditions. The objective of this study was to investigate the effects of the endophytic fungus Serendipita indica on biomass, chlorophyll concent, ROS levels, antioxidant enzyme activities, and ascorbate-glutathione cycle in white clover under ample water and water stress conditions. The results showed that 46 days of soil water stress distinctly promoted root colonization by S. indica . Under water stress, S. indica inoculation significantly promoted shoot and root biomass, total chlorophyll content, and activities of superoxide dismutases (SOD; e.g., Fe-SOD and Cu/Zn-SOD) and peroxidase in roots, coupled with a decrease in malondialdehyde content in roots. In the ascorbate-glutathione cycle of roots, S. indica also significantly increased the activity of ascorbate peroxidase and glutathione reductase activities in water-stressed white clover, along with the increase in reduced ascorbic acid and reduced/oxidized glutathione contents, thus accelerating the ascorbate-glutathione cycle in inoculated plants to scavenge more ROS (e.g., hydrogen peroxide). As a result, S. indica enhanced the tolerance of white clover in response to water stress by enhancing antioxidant enzyme activities and accelerating the ascorbate-glutathione cycle.
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Claims 8
Claim · model-written summary
Water stress for 46 days promoted S. indica root colonization in white clover.
- Taxon
- white clover
Trifolium repenst0 - Treatment
- 46 days of soil water stresse0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- root colonization by S. indicae0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“46 days of soil water stress distinctly promoted root colonization by S. indica”
t0“white clover”
Claim · model-written summary
Under water stress, S. indica inoculation significantly promoted white clover shoot and root biomass.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- S. indica inoculatione0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- shoot and root biomasse0
- Direction
- promotede0
- Qualifier
- Under water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under water stress, S. indica inoculation significantly promoted shoot and root biomass”
t0“white clover”
Claim · model-written summary
Under water stress, S. indica inoculation significantly promoted white clover total chlorophyll content.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- S. indica inoculatione0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- total chlorophyll contente0
- Direction
- promotede0
- Qualifier
- Under water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under water stress, S. indica inoculation significantly promoted shoot and root biomass, total chlorophyll content”
t0“white clover”
Claim · model-written summary
Under water stress, S. indica inoculation significantly promoted root superoxide dismutase and peroxidase activities.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- S. indica inoculatione0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- activities of superoxide dismutases (SOD; e.g., Fe-SOD and Cu/Zn-SOD) and peroxidase in rootse0
- Direction
- promotede0
- Qualifier
- Under water stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under water stress, S. indica inoculation significantly promoted shoot and root biomass, total chlorophyll content, and activities of superoxide dismutases (SOD; e.g., Fe-SOD and Cu/Zn-SOD) and peroxidase in roots”
t0“white clover”
Claim · model-written summary
Under water stress, S. indica inoculation decreased malondialdehyde content in roots.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- S. indica inoculatione0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- malondialdehyde content in rootse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. indica inoculation significantly promoted shoot and root biomass, total chlorophyll content, and activities of superoxide dismutases (SOD; e.g., Fe-SOD and Cu/Zn-SOD) and peroxidase in roots, coupled with a decrease in malondialdehyde content in roots”
t0“white clover”
Claim · model-written summary
S. indica increased root ascorbate peroxidase and glutathione reductase activities in water-stressed white clover.
- Taxon
- white cloverTrifolium repense0
- Treatment
- S. indicae0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- activity of ascorbate peroxidase and glutathione reductase activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. indica also significantly increased the activity of ascorbate peroxidase and glutathione reductase activities in water-stressed white clover”
Claim · model-written summary
S. indica increased reduced ascorbic acid and reduced/oxidized glutathione contents in water-stressed white clover roots.
- Taxon
- white cloverTrifolium repense0
- Treatment
- S. indicae0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- reduced ascorbic acid and reduced/oxidized glutathione contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. indica also significantly increased the activity of ascorbate peroxidase and glutathione reductase activities in water-stressed white clover, along with the increase in reduced ascorbic acid and reduced/oxidized glutathione contents”
Claim · model-written summary
The authors attribute enhanced white clover water-stress tolerance to antioxidant enzyme activity and accelerated ascorbate-glutathione cycling under S. indica inoculation.
- Taxon
- white cloverTrifolium repense0
- Interactor
- S. indicaSerendipita indicae0symbiont
- Outcome
- tolerance of white clover in response to water stresse0
- Qualifier
- enhancing antioxidant enzyme activities and accelerating the ascorbate-glutathione cyclee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“S. indica enhanced the tolerance of white clover in response to water stress by enhancing antioxidant enzyme activities and accelerating the ascorbate-glutathione cycle”
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See all 5 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.