Abstract
This study explored the physiological and molecular mechanisms of yield increase in maize under stable soil water content (SW) conditions. Results of the study showed that under SW conditions, corn yield increased by 38.72 and 44.09% in 2019 and 2020, respectively. Further, it was found that dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively. However, the results showed that both the activity of antioxidant enzymes and content of osmotic adjustment substances decreased in maize under SW conditions. When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient. Transcriptome profiles of maize leaves under the two conditions (SW and DW) were also analyzed and compared. It was found that 11 genes were highly up-regulated in the photosynthesis pathway. These genes included photosystem II protein V (PsbE), photosystem II protein VI (PsbF), photosystem II protein D1 (PsbA), photosystem II protein D2 (PsbD) and ATP synthase CF1 beta subunit (atpB). Further, it was found that four genes were up-regulated in the oxidative phosphorylation pathway., These were ATP synthase CF1 epsilon subunit (atpE), ATP synthase CF1 beta subunit (atpB), NADH dehydrogenase subunit 4L (ndhE) and NADH dehydrogenase subunit 6 (ndhG). In conclusion, the physiological mechanism of stable soil water content (SW) to increase corn yield may be the enhancement of photosynthetic capacity and energy metabolism.
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Claims 12
Claim · model-written summary
Under stable soil water, maize yield increased by 38.72% in 2019 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- corn yielde1
- Direction
- increasede1
- Value
- 38.72e1
- Qualifier
- 2019e1
- Comparator
- dry and wet alternation (DW) conditionse3
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“under SW conditions, corn yield increased by 38.72 and 44.09% in 2019 and 2020, respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, maize yield increased by 44.09% in 2020 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- corn yielde1
- Direction
- increasede1
- Value
- 44.09%e1
- Qualifier
- 2020e1
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“under SW conditions, corn yield increased by 38.72 and 44.09% in 2019 and 2020, respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, dry matter accumulation increased by 31.24% in 2019 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- dry matter accumulatione2
- Direction
- increasede2
- Value
- 31.24e2
- Qualifier
- 2019e2
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, dry matter accumulation increased by 25.67% in 2020 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- dry matter accumulatione2
- Direction
- increasede2
- Value
- 25.67%e2
- Qualifier
- 2020e2
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, economic coefficient increased by 5.45% in 2019 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- economic coefficiente2
- Direction
- increasede2
- Value
- 5.45e2
- Qualifier
- 2019e2
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, economic coefficient increased by 15.38% in 2020 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- economic coefficiente2
- Direction
- increasede2
- Value
- 15.38%e2
- Qualifier
- 2020e2
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, photosynthetic rate increased by 29.60% in 2019 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- photosynthetic ratee2
- Direction
- increasede2
- Value
- 29.60e2
- Qualifier
- 2019e2
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, photosynthetic rate increased by 31.83% in 2020 compared with dry and wet alternation.
- Treatment
- SWe3
- Outcome
- photosynthetic ratee2
- Direction
- increasede2
- Value
- 31.83%e2
- Qualifier
- 2020e2
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“dry matter accumulation, economic coefficient and photosynthetic rate also increased by 31.24 and 25.67%, 5.45 and 15.38% as well as 29.60 and 31.83% in 2019 and 2020 respectively”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, antioxidant enzyme activity and osmotic adjustment substance content decreased in maize.
- Treatment
- SW conditionse4
- Outcome
- activity of antioxidant enzymes and content of osmotic adjustment substancese4
- Direction
- decreasede4
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the results showed that both the activity of antioxidant enzymes and content of osmotic adjustment substances decreased in maize under SW conditions”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, 11 genes were highly up-regulated in the photosynthesis pathway of maize leaves compared with dry and wet alternation.
- Treatment
- SWe3
- Gene
- photosystem II protein V (PsbE), photosystem II protein VI (PsbF), photosystem II protein D1 (PsbA), photosystem II protein D2 (PsbD) and ATP synthase CF1 beta subunit (atpB)e6
- Outcome
- photosynthesis pathwaye5
- Direction
- highly up-regulatede5
- Value
- 11 genese5
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“11 genes were highly up-regulated in the photosynthesis pathway”
e6“These genes included photosystem II protein V (PsbE), photosystem II protein VI (PsbF), photosystem II protein D1 (PsbA), photosystem II protein D2 (PsbD) and ATP synthase CF1 beta subunit (atpB)”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
Under stable soil water, four genes were up-regulated in the oxidative phosphorylation pathway of maize leaves compared with dry and wet alternation.
- Treatment
- SWe3
- Gene
- ATP synthase CF1 epsilon subunit (atpE), ATP synthase CF1 beta subunit (atpB), NADH dehydrogenase subunit 4L (ndhE) and NADH dehydrogenase subunit 6 (ndhG)e0
- Outcome
- oxidative phosphorylation pathwaye7
- Direction
- up-regulatede7
- Value
- four genese7
- Comparator
- dry and wet alternation (DW) conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“four genes were up-regulated in the oxidative phosphorylation pathway”
e0“These were ATP synthase CF1 epsilon subunit (atpE), ATP synthase CF1 beta subunit (atpB), NADH dehydrogenase subunit 4L (ndhE) and NADH dehydrogenase subunit 6 (ndhG)”
e3“When compared with soil moisture content of dry and wet alternation (DW) conditions, SW could not only significantly promote growth and yield of maize but also increase the economic coefficient”
Claim · model-written summary
The physiological mechanism of stable soil water content to increase corn yield may be enhanced photosynthetic capacity and energy metabolism.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- stable soil water content (SW)e0
- Outcome
- corn yielde0
- Qualifier
- enhancement of photosynthetic capacity and energy metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the physiological mechanism of stable soil water content (SW) to increase corn yield may be the enhancement of photosynthetic capacity and energy metabolism”
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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.