Abstract
Abstract— Involvement of phytochrome in the regulation of nitrate reductase (NR) and nitrite reductase (NIR) activities in excised, etiolated leaves of Zea mays (L.) variety ‘Ganga‐5’ is demonstrated using low energy and high irradiance responses of phytochrome action. Photoreversibility by far‐red light of red light stimulated increases in NR and NIR activities was lost by 2 h. Red light given to the leaves, when induction by NO ‐ 3 , was saturated, further increased both enzyme activities. Even if red light was given 4–8 h before NO ‐ 3 , it still increased both NR and NIR activities.
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Claims 3
Claim · model-written summary
Far-red photoreversibility of red-light stimulation of both reductase activities was lost by two hours.
- Outcome
- Photoreversibility by far‐red light of red light stimulated increases in NR and NIR activitiese0
- Value
- 2 he0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photoreversibility by far‐red light of red light stimulated increases in NR and NIR activities was lost by 2 h.”
e1“leaves of Zea mays (L.) variety ‘Ganga‐5’”
Claim · model-written summary
Red light further increased both reductase activities after nitrate induction was saturated.
- Treatment
- Red lighte0
- Outcome
- both enzyme activitiese0
- Direction
- increasede0
- Qualifier
- when induction by NO ‐ 3 , was saturatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red light given to the leaves, when induction by NO ‐ 3 , was saturated, further increased both enzyme activities.”
e1“leaves of Zea mays (L.) variety ‘Ganga‐5’”
Claim · model-written summary
Red light given four to eight hours before nitrate increased both reductase activities.
- Treatment
- red lighte0
- Outcome
- both NR and NIR activitiese0
- Direction
- increasede0
- Qualifier
- 4–8 h before NO ‐ 3e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even if red light was given 4–8 h before NO ‐ 3 , it still increased both NR and NIR activities.”
e1“leaves of Zea mays (L.) variety ‘Ganga‐5’”
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See all 19 papers →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.