Abstract
In order to better understand the physiological and biochemical responses relating to direct seeding establishment in soybeans, the plant growth rate and antioxidative defense responses of seedlings in seven Indonesian soybean genotypes (Anjasmoro, Detam-1, Detam-2, Dieng, Grobogan, Tanggamus, and Willis) at different submergence periods (4, and 8 days) were examined. Twelve-day old seedlings were hydroponically grown in limited oxygen conditions. The results showed that the chlorophyll content in soybean seedlings was reduced beginning as early as 4 d under submerged condition, except for Detam-1, Detam-2, and Grobogan genotypes. The dry weight and protein concentration of seedlings were significantly higher at control condition (0 d) than those in submerged condition. The activities of superoxide dismutase (SOD) increased linearly until 8 d submerged for all genotypes. On the other hand, our results showed that catalase (CAT) and ascorbate peroxidase (APX) activities did not work together, meaning that CAT is activated and APX deactivated, or vice versa, in response to submergence conditions, except for Grobogan and Tanggamus genotypes which had an effect on both CAT and APX activities. Submergence stress led to a significant increase in glutathione reductase (GR) together with APX activity for Detam-2 and Dieng genotypes at 8 d submerged.
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Claims 7
Claim · model-written summary
Submergence reduced seedling chlorophyll content by day 4 except in Detam-1, Detam-2, and Grobogan.
- Taxon
- soybean
Glycine maxe0 - Organ / stage
- seedlingse0
- Treatment
- submerged conditione0
- Outcome
- chlorophyll contente0
- Direction
- reducede0
- Qualifier
- except for Detam-1, Detam-2, and Grobogan genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the chlorophyll content in soybean seedlings was reduced beginning as early as 4 d under submerged condition, except for Detam-1, Detam-2, and Grobogan genotypes”
Claim · model-written summary
Seedling dry weight was higher under control than submerged conditions.
- Treatment
- submerged conditione0
- Outcome
- dry weighte0
- Direction
- highere0
- Comparator
- control condition (0 d)e0
Not reportedTaxon
Verbatim
e0“The dry weight and protein concentration of seedlings were significantly higher at control condition (0 d) than those in submerged condition”
Claim · model-written summary
Seedling protein concentration was higher under control than submerged conditions.
- Taxon
- soybeanGlycine maxt0
- Treatment
- submerged conditione0
- Outcome
- protein concentratione0
- Direction
- highere0
- Comparator
- control condition (0 d)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry weight and protein concentration of seedlings were significantly higher at control condition (0 d) than those in submerged condition”
t0“soybean”
Claim · model-written summary
Superoxide dismutase activity increased linearly to eight days of submergence across all genotypes.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 8 d submergede0
- Gene
- superoxide dismutase (SOD)e0
- Outcome
- activities of superoxide dismutase (SOD)e0
- Direction
- increased linearlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of superoxide dismutase (SOD) increased linearly until 8 d submerged for all genotypes”
t0“soybean”
Claim · model-written summary
Catalase and ascorbate peroxidase activities responded in opposite directions to submergence, apart from Grobogan and Tanggamus.
- Taxon
- soybeanGlycine maxt0
- Treatment
- submergence conditionse0
- Outcome
- CAT is activated and APX deactivated, or vice versae0
- Qualifier
- except for Grobogan and Tanggamus genotypese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAT is activated and APX deactivated, or vice versa, in response to submergence conditions, except for Grobogan and Tanggamus genotypes which had an effect on both CAT and APX activities”
t0“soybean”
Claim · model-written summary
At eight days of submergence, glutathione reductase activity increased significantly in Detam-2 and Dieng.
- Taxon
- soybeanGlycine maxt0
- Material
- Detam-2 and Dieng genotypese0
- Treatment
- Submergence stresse0
- Outcome
- glutathione reductase (GR)e0
- Direction
- increasee0
- Qualifier
- at 8 d submergede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Submergence stress led to a significant increase in glutathione reductase (GR) together with APX activity for Detam-2 and Dieng genotypes at 8 d submerged”
t0“soybean”
Claim · model-written summary
At eight days of submergence, ascorbate peroxidase activity increased significantly in Detam-2 and Dieng.
- Taxon
- soybeanGlycine maxt0
- Material
- Detam-2 and Dieng genotypese0
- Treatment
- Submergence stresse0
- Outcome
- APX activitye0
- Direction
- increasee0
- Qualifier
- at 8 d submergede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Submergence stress led to a significant increase in glutathione reductase (GR) together with APX activity for Detam-2 and Dieng genotypes at 8 d submerged”
t0“soybean”
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