Abstract
Night-time stomatal opening in C(3) plants may result in significant water loss when no carbon gain is possible. The objective of this study was to determine if endogenous patterns of night-time stomatal opening, as reflected in leaf conductance, in Vicia faba are affected by photosynthetic conditions the previous day. Reducing photosynthesis with low light or low CO(2) resulted in reduced night-time stomatal opening the following night, irrespective of the effects on daytime stomatal conductance. Likewise, increasing photosynthesis with enriched CO(2) levels resulted in increased night-time stomatal opening the following night. Reduced night-time stomatal opening was not the result of an inability to regulate stomatal aperture as leaves with reduced night-time stomatal opening were capable of greater night-time opening when exposed to low CO(2). After acclimating plants to long or short days, it was found that night-time leaf conductance was greater in plants acclimated to short days, and associated with greater leaf starch and nitrate accumulation, both of which may affect night-time guard cell osmotic potential. Direct measurement of guard cell contents during endogenous night-time stomatal opening will help identify the mechanism of the effect of daytime photosynthesis on subsequent night-time stomatal regulation.
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Claims 7
Claim · model-written summary
Low light reduced following-night stomatal opening.
- Taxon
- Vicia faba
Vicia fabat0 - Treatment
- low lighte0
- Outcome
- night-time stomatal openinge0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reducing photosynthesis with low light or low CO(2) resulted in reduced night-time stomatal opening the following night”
t0“Vicia faba”
Claim · model-written summary
Low CO(2) reduced following-night stomatal opening.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- low CO(2)e0
- Outcome
- night-time stomatal openinge0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reducing photosynthesis with low light or low CO(2) resulted in reduced night-time stomatal opening the following night”
t0“Vicia faba”
Claim · model-written summary
Enriched CO(2) increased following-night stomatal opening.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- enriched CO(2) levelse0
- Outcome
- night-time stomatal openinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing photosynthesis with enriched CO(2) levels resulted in increased night-time stomatal opening the following night”
t0“Vicia faba”
Claim · model-written summary
Leaves with reduced night-time opening could open more under low CO(2).
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- low CO(2)e0
- Outcome
- night-time openinge0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves with reduced night-time stomatal opening were capable of greater night-time opening when exposed to low CO(2)”
t0“Vicia faba”
Claim · model-written summary
Short-day acclimation produced greater night-time leaf conductance than long-day acclimation.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- short dayse0
- Outcome
- night-time leaf conductancee0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“night-time leaf conductance was greater in plants acclimated to short days, and associated with greater leaf starch and nitrate accumulation”
t0“Vicia faba”
Claim · model-written summary
Short-day acclimation was associated with greater leaf starch accumulation.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- short dayse0
- Outcome
- leaf starche0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants acclimated to short days, and associated with greater leaf starch and nitrate accumulation”
t0“Vicia faba”
Claim · model-written summary
Short-day acclimation was associated with greater leaf nitrate accumulation.
- Taxon
- Vicia fabaVicia fabat0
- Treatment
- short dayse0
- Outcome
- nitrate accumulatione0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants acclimated to short days, and associated with greater leaf starch and nitrate accumulation”
t0“Vicia faba”
The same questions in other papers
co2 · physiology: gas exchange · Vicia faba (faba bean)Positive and negative results
2 in the opposite direction
- no effect
- negative
light · physiology: gas exchange · Vicia faba (faba bean)Positive and negative results
4 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.