Abstract
We performed a field experiment using the maize hybrids DengHai605 (DH605) and ZhengDan958 (ZD958) to study nitrogen uptake and translocation, key enzyme activities of nitrogen metabolism in response to waterlogging at the third leaf stage (V3), the sixth leaf stage (V6), and the 10th day after the tasseling stage (10VT). Results showed that N accumulation amount was significantly reduced after waterlogging, most greatly in the V3 waterlogging treatment (V3-W), with decreases of 41 and 37% in DH605 and ZD958, respectively. N accumulation in each organ and N allocation proportions in grains decreased significantly after waterlogging, whereas N allocation proportions increased in stem and leaf. The reduction in stem and leaf N accumulation after waterlogging was mainly caused by a decrease in dry matter accumulation, and a reduction in N translocation from stems and leaves to grains after waterlogging. Additionally, waterlogging decreased the activity of key N metabolism enzymes (nitrate reductase, glutamine, glutamate synthase, and glutamate dehydrogenase), and the most significant reduction in V3-W with a decrease of 59, 46, 35, and 26% for DH605, and 60, 53, 31, and 25 for ZD958, respectively. Waterlogging disrupted N metabolism, hindered N absorption and transportation, and decreased maize yield.
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Claims 12
Claim · model-written summary
Waterlogging significantly reduced N accumulation, most strongly at the V3 stage.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e1“N accumulation amount was significantly reduced after waterlogging, most greatly in the V3 waterlogging treatment (V3-W), with decreases of 41 and 37% in DH605 and ZD958, respectively”
Claim · model-written summary
Waterlogging at V3 decreased N accumulation by 41 and 37% in DH605 and ZD958.
- Material
- DH605 and ZD958e1
- Treatment
- V3-We1
- Outcome
- N accumulatione1
- Direction
- decreasese1
- Value
- 41 and 37%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e1“N accumulation amount was significantly reduced after waterlogging, most greatly in the V3 waterlogging treatment (V3-W), with decreases of 41 and 37% in DH605 and ZD958, respectively”
Claim · model-written summary
Waterlogging decreased N accumulation in each organ and N allocation to grains.
- Organ / stage
- grainse2
- Treatment
- waterlogginge2
- Outcome
- N accumulation in each organ and N allocation proportions in grainse2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e2“N accumulation in each organ and N allocation proportions in grains decreased significantly after waterlogging, whereas N allocation proportions increased in stem and leaf”
Claim · model-written summary
Waterlogging increased the N allocation proportion in stem and leaf.
- Organ / stage
- stem and leafe2
- Treatment
- waterlogginge2
- Outcome
- N allocation proportionse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e2“N accumulation in each organ and N allocation proportions in grains decreased significantly after waterlogging, whereas N allocation proportions increased in stem and leaf”
Claim · model-written summary
The reduction in stem and leaf N accumulation under waterlogging is attributed mainly to lower dry matter accumulation.
- Treatment
- waterlogginge3
- Outcome
- reduction in stem and leaf N accumulatione3
- Qualifier
- a decrease in dry matter accumulatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e3“The reduction in stem and leaf N accumulation after waterlogging was mainly caused by a decrease in dry matter accumulation”
Claim · model-written summary
Waterlogging reduced N translocation from stems and leaves to grains.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e4“a reduction in N translocation from stems and leaves to grains after waterlogging”
Claim · model-written summary
Waterlogging decreased the activity of key N metabolism enzymes.
- Treatment
- waterlogginge5
- Gene
- nitrate reductase, glutamine, glutamate synthase, and glutamate dehydrogenasee5
- Outcome
- activity of key N metabolism enzymese5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e5“waterlogging decreased the activity of key N metabolism enzymes (nitrate reductase, glutamine, glutamate synthase, and glutamate dehydrogenase), and the most significant reduction in V3-W with a decrease of 59, 46, 35, and 26% for DH605, and 60, 53, 31, and 25 for ZD958, respectively”
Claim · model-written summary
Under V3 waterlogging the N metabolism enzyme activity decrease was 59, 46, 35 and 26% in DH605.
- Material
- DH605e5
- Treatment
- V3-We5
- Outcome
- activity of key N metabolism enzymese5
- Direction
- decreasee5
- Value
- 59, 46, 35, and 26%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e5“waterlogging decreased the activity of key N metabolism enzymes (nitrate reductase, glutamine, glutamate synthase, and glutamate dehydrogenase), and the most significant reduction in V3-W with a decrease of 59, 46, 35, and 26% for DH605, and 60, 53, 31, and 25 for ZD958, respectively”
Claim · model-written summary
Under V3 waterlogging the N metabolism enzyme activity decrease was 60, 53, 31 and 25% in ZD958.
- Material
- ZD958e5
- Treatment
- V3-We5
- Outcome
- activity of key N metabolism enzymese5
- Direction
- decreasee5
- Value
- 60, 53, 31, and 25e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e5“waterlogging decreased the activity of key N metabolism enzymes (nitrate reductase, glutamine, glutamate synthase, and glutamate dehydrogenase), and the most significant reduction in V3-W with a decrease of 59, 46, 35, and 26% for DH605, and 60, 53, 31, and 25 for ZD958, respectively”
Claim · model-written summary
Waterlogging disrupted N metabolism in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e6“Waterlogging disrupted N metabolism, hindered N absorption and transportation, and decreased maize yield”
Claim · model-written summary
Waterlogging hindered N absorption and transportation in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e6“Waterlogging disrupted N metabolism, hindered N absorption and transportation, and decreased maize yield”
Claim · model-written summary
Waterlogging decreased maize yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“of Maize to Waterlogging”
e6“Waterlogging disrupted N metabolism, hindered N absorption and transportation, and decreased maize yield”
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