Abstract
The effects of potassium on sucrose and glucose content,sugar metabolism related enzyme activity and the expression of related genes in maize root infected with Fusarium graminearum were studied under sand-culture experiment.The results showed that under K stress,pathogen infection led to significant decrease of sucrose and glucose contents.The sucrose content declined more quickly than that of glucose.With the process of infection,the ratio of glucose to sucrose increased in no potassium applied treatment;8 days after infection,the ratio was 10 times higher in K deficient roots than in K adequate roots.Besides,after inoculation,the activity of sucrose phosphate synthase(SPS) and sucrose synthase(SS) were increased as well as the gene expression of sps and ss in potassium treated maize root.In K-treatment,sps gene expression increased in 6 days after inoculation,and no change of ss expression was observed in K-stressed root.This study demonstrated that K could enhance maize resistance to stalk rot by regulating sugar metabolism related enzyme,consequently,maintain the optimal sugar metabolism in infected position,and enhance the resistance to stalk rot.
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Claims 9
Claim · model-written summary
Pathogen infection significantly decreased sucrose and glucose contents in maize roots under K stress.
- Treatment
- pathogen infectione1
- Interactor
- Fusarium graminearum
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=60)
Fusarium graminearume2pathogen - Outcome
- sucrose and glucose contentse1
- Direction
- decreasee1
- Qualifier
- under K stresse1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=500)
Verbatim
e2“maize root infected with Fusarium graminearum”
e1“under K stress,pathogen infection led to significant decrease of sucrose and glucose contents”
Claim · model-written summary
With infection, the glucose-to-sucrose ratio increased in maize roots not given potassium.
- Treatment
- no potassium appliede3
- Outcome
- ratio of glucose to sucrosee3
- Direction
- increasede3
- Qualifier
- With the process of infectione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e3“With the process of infection,the ratio of glucose to sucrose increased in no potassium applied treatment”
Claim · model-written summary
Eight days after infection, the glucose-to-sucrose ratio was 10 times higher in K-deficient maize roots than in K-adequate roots.
- Treatment
- K deficiente4
- Outcome
- ratioe4
- Direction
- highere4
- Value
- 10 timese4
- Qualifier
- 8 days after infectione4
- Comparator
- K adequate rootse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e4“8 days after infection,the ratio was 10 times higher in K deficient roots than in K adequate roots”
Claim · model-written summary
Sucrose phosphate synthase and sucrose synthase activities increased after inoculation in potassium-treated maize roots.
- Organ / stage
- roote2
- Treatment
- inoculatione5
- Outcome
- the activity of sucrose phosphate synthase(SPS) and sucrose synthase(SS)e5
- Direction
- increasede5
- Qualifier
- in potassium treatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e5“after inoculation,the activity of sucrose phosphate synthase(SPS) and sucrose synthase(SS) were increased as well as the gene expression of sps and ss in potassium treated maize root”
Claim · model-written summary
Gene expression of sps and ss increased after inoculation in potassium-treated maize roots.
- Organ / stage
- roote2
- Treatment
- inoculatione5
- Gene
- sps and sse5
- Outcome
- gene expressione5
- Direction
- increasede5
- Qualifier
- in potassium treatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e5“after inoculation,the activity of sucrose phosphate synthase(SPS) and sucrose synthase(SS) were increased as well as the gene expression of sps and ss in potassium treated maize root”
Claim · model-written summary
sps gene expression increased in K-treated maize roots 6 days after inoculation.
- Treatment
- K-treatmente6
- Gene
- spse6
- Outcome
- gene expressione6
- Direction
- increasede6
- Qualifier
- 6 days after inoculatione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e6“In K-treatment, sps gene expression increased in 6 days after inoculation”
Claim · model-written summary
ss gene expression did not change in K-stressed maize roots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e7“no change of ss expression was observed in K-stressed root”
Claim · model-written summary
Potassium may enhance maize resistance to stalk rot.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“maize root infected with Fusarium graminearum”
e7“This study demonstrated that K could enhance maize resistance to stalk rot”
Claim · model-written summary
Potassium may enhance maize stalk rot resistance by regulating sugar metabolism related enzymes.
- Treatment
- Ke7
- Outcome
- resistance to stalk rote7
- Qualifier
- by regulating sugar metabolism related enzymee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“K could enhance maize resistance to stalk rot by regulating sugar metabolism related enzyme”
The same questions in other papers
potassium · disease · Zea mays (maize)Positive and negative results
13 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
12 papers more in this group
See all 16 papers →infection · Fusarium graminearum · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- negative
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.