Abstract
Pisum sativum cv. Guido grown under controlled environment conditions was exposed to either low or high UV-B radiation (2·2 or 9·9 kJ m–2 d–1 plant-weighted UV-B, respectively). Low or high UV-B was maintained throughout growth (LL and HH treatments, respectively) or plants were transferred between treatments when 22 d old (giving LH and HL treatments). High UV-B significantly reduced plant dry weight and significantly altered plant morphology. The growth and morphology of plants transferred from low to high UV-B were little affected, when compared with those of LL plants. By contrast, plants moved from high to low UV-B showed marked increases in growth when compared with HH plants. This contrast between HL and LH appeared to be related to the effect of UV-B on plant development. Exposure to high UV-B throughout development consistently reduced leaf areas. In fully expanded leaves there was no significant UV-B effect on cell area and reduced leaf area could be attributed to reduced cell number, suggesting effects on leaf primordia. Further reductions in the leaf area of younger leaves were the result of the slower development rate of plants grown at high UV-B, which also resulted in significant reductions in leaf number.
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Claims 9
Claim · model-written summary
High UV-B reduced pea dry weight.
- Taxon
- pea (Pisum sativum L.)
Lathyrus oleraceust0 - Treatment
- High UV-Be0
- Outcome
- plant dry weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High UV-B significantly reduced plant dry weight and significantly altered plant morphology”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
High UV-B altered pea morphology.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Treatment
- High UV-Be0
- Outcome
- plant morphologye0
- Direction
- alterede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High UV-B significantly reduced plant dry weight and significantly altered plant morphology”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
Transfer from low to high UV-B had little effect on growth and morphology relative to LL plants.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Treatment
- transferred from low to high UV-Be0
- Outcome
- growth and morphologye0
- Direction
- little affectede0
- Comparator
- LL plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth and morphology of plants transferred from low to high UV-B were little affected, when compared with those of LL plants”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
Transfer from high to low UV-B increased growth relative to HH plants.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Treatment
- moved from high to low UV-Be0
- Outcome
- growthe0
- Direction
- marked increasese0
- Comparator
- HH plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants moved from high to low UV-B showed marked increases in growth when compared with HH plants”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
High UV-B throughout development reduced leaf area.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Treatment
- high UV-B throughout developmente0
- Outcome
- leaf arease0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure to high UV-B throughout development consistently reduced leaf areas”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
UV-B had no significant effect on cell area in fully expanded leaves.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Organ / stage
- fully expanded leavese0
- Treatment
- UV-Be0
- Outcome
- cell areae0
- Direction
- no significant UV-B effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In fully expanded leaves there was no significant UV-B effect on cell area”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
Reduced leaf area was attributed to fewer cells.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Outcome
- reduced leaf areae0
- Qualifier
- reduced cell numbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced leaf area could be attributed to reduced cell number, suggesting effects on leaf primordia”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
High UV-B slowed development of younger leaves and further reduced their area.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Organ / stage
- younger leavese0
- Treatment
- high UV-Be0
- Outcome
- leaf areae0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further reductions in the leaf area of younger leaves were the result of the slower development rate of plants grown at high UV-B”
t0“pea (Pisum sativum L.)”
Claim · model-written summary
High UV-B reduced leaf number.
- Taxon
- pea (Pisum sativum L.)Lathyrus oleraceust0
- Treatment
- high UV-Be0
- Outcome
- leaf numbere0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“slower development rate of plants grown at high UV-B, which also resulted in significant reductions in leaf number”
t0“pea (Pisum sativum L.)”
The same questions in other papers
uv · growth · Lathyrus oleraceus (pea)Results differ
4 papers in the same direction as this paper · 21 in the opposite direction
- negative
- negative
- negative
22 papers more in this group
See all 26 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.