Abstract
Mitigating climate change requires the identification of tree species that can tolerate water stress with fewer negative impacts on plant productivity. Therefore, the study aimed to evaluate the water stress tolerance of young saplings of C. erectus and M. alba under three soil water deficit treatments (control, CK, 90% field capacity, FC, medium stress MS, 60% FC and high stress, HS, 30% FC) under controlled conditions. Results showed that leaf and stem dry weight decreased significantly in both species under MS and HS. However, root dry weight and root/shoot ratio increased, and total dry weight remained similar to CK under MS in C. erectus saplings. Stomatal conductance, CO2 assimilation rate decreased, and intrinsic water use efficiency increased significantly in both species under MS and HS treatments. The concentration of hydrogen peroxide, superoxide radical, malondialdehyde and electrolyte leakage increased in both the species under soil water deficit but was highest in M. alba. The concentration of antioxidative enzymes like superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase also increased in both species under MS and HS but was highest in C. erectus. Therefore, results suggest that C. erectus saplings depicted a better tolerance to MS due to an effective antioxidative enzyme system.
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Claims 10
Claim · model-written summary
Leaf and stem dry weight decreased significantly in both species under medium and high stress.
- Taxon
- C. erectus and M. alba
Morus alba
Conocarpus erectuse1 - Treatment
- MS and HSe0
- Outcome
- leaf and stem dry weighte0
- Direction
- decreasede0
- Comparator
- control, CKe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf and stem dry weight decreased significantly in both species under MS and HS”
e1“C. erectus and M. alba under three soil water deficit treatments (control, CK, 90% field capacity, FC, medium stress MS, 60% FC and high stress, HS, 30% FC)”
Claim · model-written summary
Root dry weight and root/shoot ratio increased under medium stress in C. erectus.
- Taxon
- C. erectusConocarpus erectuse1
- Treatment
- MSe1
- Outcome
- root dry weight and root/shoot ratioe0
- Direction
- increasede0
- Comparator
- control, CKe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root dry weight and root/shoot ratio increased”
e1“under MS in C. erectus saplings”
e2“control, CK”
Claim · model-written summary
Total dry weight of C. erectus remained similar to control under medium stress.
- Taxon
- C. erectusConocarpus erectuse0
- Treatment
- MSe0
- Outcome
- total dry weighte0
- Direction
- remained similare0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total dry weight remained similar to CK under MS in C. erectus saplings”
Claim · model-written summary
Stomatal conductance and CO2 assimilation decreased significantly in both species under medium and high stress.
- Taxon
- C. erectus and M. albaMorus albaConocarpus erectuse1
- Treatment
- MS and HS treatmentse0
- Outcome
- Stomatal conductance, CO2 assimilation ratee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal conductance, CO2 assimilation rate decreased, and intrinsic water use efficiency increased significantly in both species under MS and HS treatments”
e1“C. erectus and M. alba”
Claim · model-written summary
Intrinsic water use efficiency increased significantly in both species under medium and high stress.
- Taxon
- C. erectus and M. albaMorus albaConocarpus erectuse1
- Treatment
- MS and HS treatmentse0
- Outcome
- intrinsic water use efficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intrinsic water use efficiency increased significantly in both species under MS and HS treatments”
e1“C. erectus and M. alba”
Claim · model-written summary
Hydrogen peroxide, superoxide radical, and malondialdehyde concentrations increased in both species under water deficit, with the highest levels in M. alba.
- Taxon
- C. erectus and M. albaMorus albaConocarpus erectuse1
- Treatment
- soil water deficite0
- Outcome
- concentration of hydrogen peroxide, superoxide radical, malondialdehydee0
- Direction
- increasede0
- Qualifier
- highest in M. albae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of hydrogen peroxide, superoxide radical, malondialdehyde and electrolyte leakage increased in both the species under soil water deficit but was highest in M. alba”
e1“C. erectus and M. alba”
Claim · model-written summary
Electrolyte leakage increased under water deficit in both species and was highest in M. alba.
- Taxon
- C. erectus and M. albaMorus albaConocarpus erectuse1
- Treatment
- soil water deficite0
- Outcome
- electrolyte leakagee0
- Direction
- increasede0
- Qualifier
- highest in M. albae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of hydrogen peroxide, superoxide radical, malondialdehyde and electrolyte leakage increased in both the species under soil water deficit but was highest in M. alba”
e1“C. erectus and M. alba”
Claim · model-written summary
Superoxide dismutase, peroxidase, and catalase increased in both species under medium and high stress and were highest in C. erectus.
- Taxon
- C. erectus and M. albaMorus albaConocarpus erectuse1
- Treatment
- MS and HSe0
- Outcome
- superoxide dismutase, peroxidase, catalasee0
- Direction
- increasede0
- Qualifier
- highest in C. erectuse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase also increased in both species under MS and HS but was highest in C. erectus”
e1“C. erectus and M. alba”
Claim · model-written summary
Ascorbate peroxidase increased in both species under medium and high stress and was highest in C. erectus.
- Taxon
- C. erectus and M. albaMorus albaConocarpus erectuse1
- Treatment
- MS and HSe0
- Outcome
- ascorbate peroxidasee0
- Direction
- increasede0
- Qualifier
- highest in C. erectuse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbate peroxidase also increased in both species under MS and HS but was highest in C. erectus”
e1“C. erectus and M. alba”
Claim · model-written summary
C. erectus saplings showed better tolerance to medium stress, attributed to an effective antioxidative enzyme system.
- Taxon
- C. erectusConocarpus erectuse0
- Outcome
- better tolerance to MSe0
- Qualifier
- effective antioxidative enzyme systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“C. erectus saplings depicted a better tolerance to MS due to an effective antioxidative enzyme system”