Abstract
Using two Brazilian nitrogen fixing sugarcane varieties(B1 and B8) were employed as the test materials,a barrel gravel culture was conducted to study the effects of molybdenum on nitrogenase activity of nitrogen-fixing bacteria of sugarcane under greenhouse condition.Four Mo concentrations were adapted: 0 mg/L,0.01 mg/L,0.02 mg/L,and 0.04 mg/L.The experimental results showed that, under nitrogenous conditions,low Mo promoted nitrogenase activity of nitrogenfixing bacteria in roots,while high Mo increased that in stems of both two sugarcane varieties,and leaves of the variety B1.Under non-nitrogenous conditions, however,all Mo treatments increased the activities of nitrogenase of nitrogen fixing bacteria in leaves and stems of B1,but decreased that in leaves,stems and roots of B8 as well as that in roots of B1 compared with the control.There was a negative correlation between the nitrogenase activities of nitrogen fixing bacteria in root and that in leaf and stem.All the results indicated that Brazilian sugarcane also had a nitrogen-fixing capacity in Guangxi,Mo was propitious to regulate nitrogenase activity of nitrogen-fixing bacteria in sugarcane under nitrogenous conditions,and promoted nitrogen fixing;while under non nitrogenous conditions,it was unpropitious to regulate the nitrogen activity and inhibited nitrogen fixation of nitrogen-fixing bacteria.
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Claims 8
Claim · model-written summary
Low Mo promoted root bacterial nitrogenase under nitrogenous conditions.
- Taxon
- sugarcanet0
- Organ / stage
- rootse0
- Treatment
- molybdenumt0
- Outcome
- nitrogenase activity of nitrogenfixing bacteriae0
- Direction
- promotede0
- Qualifier
- under nitrogenous conditionse0
Not reportedMaterialComparator
Verbatim
e0“under nitrogenous conditions,low Mo promoted nitrogenase activity of nitrogenfixing bacteria in roots”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
High Mo increased stem bacterial nitrogenase under nitrogenous conditions.
- Taxon
- sugarcanet0
- Organ / stage
- stemse0
- Treatment
- molybdenumt0
- Outcome
- nitrogenase activityt0
- Direction
- increasede0
- Qualifier
- both two sugarcane varietiese0
Not reportedMaterialComparator
Verbatim
e0“high Mo increased that in stems of both two sugarcane varieties”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
High Mo increased leaf bacterial nitrogenase in B1.
- Taxon
- sugarcanet0
- Material
- B1e0
- Organ / stage
- leavese0
- Treatment
- molybdenumt0
- Outcome
- nitrogenase activityt0
- Direction
- increasede0
- Qualifier
- variety B1e0
Not reportedComparator
Verbatim
e0“high Mo increased that in stems of both two sugarcane varieties,and leaves of the variety B1”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
Mo increased B1 leaf and stem bacterial nitrogenase without nitrogen.
- Taxon
- sugarcanet0
- Material
- B1e0
- Organ / stage
- leaves and stemse0
- Treatment
- Mo treatmentse0
- Outcome
- activities of nitrogenase of nitrogen fixing bacteriae0
- Direction
- increasede0
- Qualifier
- B1e0
Not reportedComparator
Verbatim
e0“all Mo treatments increased the activities of nitrogenase of nitrogen fixing bacteria in leaves and stems of B1”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
Mo decreased B8 bacterial nitrogenase in leaves, stems and roots without nitrogen.
Verbatim
e0“decreased that in leaves,stems and roots of B8 as well as that in roots of B1 compared with the control”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
Mo decreased B1 root bacterial nitrogenase without nitrogen.
Verbatim
e0“decreased that in leaves,stems and roots of B8 as well as that in roots of B1 compared with the control”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
Root bacterial nitrogenase activity was negatively correlated with leaf and stem activity.
Verbatim
e0“There was a negative correlation between the nitrogenase activities of nitrogen fixing bacteria in root and that in leaf and stem”
t0“molybdenum on nitrogenase activity of nitrogen-fixing bacteria in sugarcane”
Claim · model-written summary
Brazilian sugarcane showed nitrogen-fixing capacity in Guangxi.
Verbatim
e0“Brazilian sugarcane also had a nitrogen-fixing capacity in Guangxi”
The same questions in other papers
molybdenum atom · physiology: enzyme activity · Saccharum officinarum (sugarcane)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
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.