Abstract
Drought severely affects the growth and yield of soybean plants especially during the flowering period. To investigate the effect of 2-oxoglutarate (2OG) in combination with foliar nitrogen (N) at flowering stage on drought resistance and seed yield of soybean under drought stress. This experiment was conducted in 2021 and 2022 on drought-resistant variety (Hefeng 50) and drought-sensitive variety (Hefeng 43) soybean plants treated with foliar N (DS + N) and 2-oxoglutarate (DS + 2OG) at flowering stage under drought stress. The results showed that drought stress at flowering stage significantly increased leaf malonaldehyde (MDA) content and reduced soybean yield per plant. However, superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activities were significantly increased by foliar N treatment, and 2-oxoglutarate synergistically with foliar N treatment (DS + N + 2OG) was more beneficial to plant photosynthesis. 2-oxoglutarate significantly enhanced plant N content, glutamine synthetase (GS) and glutamate synthase (GOGAT) activity. Furthermore, 2-oxoglutarate increased the accumulation of proline and soluble sugars under drought stress. Under drought stress, soybean seed yield was increased by DS + N + 2OG treatment by 16.48-17.10% and 14.96-18.84% in 2021 and 2022, respectively. Thus, the combination of foliar N and 2-oxoglutarate better mitigated the adverse effects of drought stress and could better compensate for the yield loss of soybean under drought stress.
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Claims 9
Claim · model-written summary
Flowering-stage drought significantly increased leaf MDA content.
- Taxon
- soybean
Glycine maxt0 - Treatment
- drought stresse0
- Outcome
- leaf malonaldehyde (MDA) contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress at flowering stage significantly increased leaf malonaldehyde (MDA) content”
t0“soybean”
Claim · model-written summary
Flowering-stage drought reduced soybean yield per plant.
- Taxon
- soybeanGlycine maxe0
- Treatment
- drought stresse0
- Outcome
- soybean yield per plante0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress at flowering stage significantly increased leaf malonaldehyde (MDA) content and reduced soybean yield per plant”
Claim · model-written summary
Foliar nitrogen significantly increased SOD, POD and CAT activities.
- Taxon
- soybeanGlycine maxt0
- Treatment
- foliar N treatmente0
- Outcome
- superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) activities were significantly increased by foliar N treatment”
t0“soybean”
Claim · model-written summary
Combined 2-oxoglutarate and foliar nitrogen benefited soybean photosynthesis.
- Taxon
- soybeanGlycine maxt0
- Treatment
- DS + N + 2OGe0
- Outcome
- plant photosynthesise0
- Direction
- more beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-oxoglutarate synergistically with foliar N treatment (DS + N + 2OG) was more beneficial to plant photosynthesis”
t0“soybean”
Claim · model-written summary
2-oxoglutarate enhanced soybean nitrogen content.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 2-oxoglutaratee0
- Outcome
- plant N contente0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-oxoglutarate significantly enhanced plant N content”
t0“soybean”
Claim · model-written summary
2-oxoglutarate enhanced GS and GOGAT activity.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 2-oxoglutaratee0
- Outcome
- glutamine synthetase (GS) and glutamate synthase (GOGAT) activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-oxoglutarate significantly enhanced plant N content, glutamine synthetase (GS) and glutamate synthase (GOGAT) activity”
t0“soybean”
Claim · model-written summary
2-oxoglutarate increased proline and soluble sugar accumulation under drought.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 2-oxoglutaratee0
- Outcome
- accumulation of proline and soluble sugarse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-oxoglutarate increased the accumulation of proline and soluble sugars under drought stress.”
t0“soybean”
Claim · model-written summary
Combined treatment increased drought-stressed soybean seed yield by 16.48-17.10% in 2021.
- Taxon
- soybeanGlycine maxe0
- Treatment
- DS + N + 2OG treatmente0
- Outcome
- soybean seed yielde0
- Direction
- increasede0
- Value
- 16.48-17.10%e0
- Qualifier
- 2021e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under drought stress, soybean seed yield was increased by DS + N + 2OG treatment by 16.48-17.10% and 14.96-18.84% in 2021 and 2022, respectively.”
Claim · model-written summary
Combined treatment increased drought-stressed soybean seed yield by 14.96-18.84% in 2022.
- Taxon
- soybeanGlycine maxe0
- Treatment
- DS + N + 2OG treatmente0
- Outcome
- soybean seed yielde0
- Direction
- increasede0
- Value
- 14.96-18.84%e0
- Qualifier
- 2022e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under drought stress, soybean seed yield was increased by DS + N + 2OG treatment by 16.48-17.10% and 14.96-18.84% in 2021 and 2022, respectively.”
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