Abstract
In vitro culturing can generate plants with a distorted morphology. Some distortions affect the plant’s survival after transfer to an ex vitro environment, while others can affect the aesthetic value. Therefore, exogenous hormones are often applied in in vitro cultures to modulate plant architecture. In this study, it was hypothesised that regulatory effects of UV-B radiation on plant morphology can be exploited under in vitro conditions, and that UV exposure will result in sturdier, less elongated plants with more branches and smaller leaves, mediated by changes in plant hormones. Plants were grown in tissue-culture containers and exposed to ~0.22 W m−2 UV-B for 8 days. Subsequently, plants were transferred to soil and monitored for a further 7 days. Results show that UV induced a marked change in architecture with a significant increase in axillary branches, and reductions in leaf area, plant height and root weight. These changes were associated with significant alterations in concentrations of hormones, including IAA, GA7, GA3 and iP–9–G. Changes in hormone concentrations suggest a regulatory, rather than a stress response to UV-B. Therefore, it is proposed that the application of UV in in vitro culture can be an innovative approach to manipulate plant architecture.
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Claims 8
Claim · model-written summary
UV increased axillary branches in in vitro Mentha spicata.
- Taxon
- Mentha spicata
Mentha spicatat0 - Treatment
- UVe0
- Outcome
- axillary branchese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“UV induced a marked change in architecture with a significant increase in axillary branches, and reductions in leaf area, plant height and root weight”
Claim · model-written summary
UV reduced leaf area in in vitro Mentha spicata.
- Taxon
- Mentha spicataMentha spicatat0
- Treatment
- UVe0
- Outcome
- leaf areae0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“UV induced a marked change in architecture with a significant increase in axillary branches, and reductions in leaf area, plant height and root weight”
Claim · model-written summary
UV reduced plant height in in vitro Mentha spicata.
- Taxon
- Mentha spicataMentha spicatat0
- Treatment
- UVe0
- Outcome
- plant heighte0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“UV induced a marked change in architecture with a significant increase in axillary branches, and reductions in leaf area, plant height and root weight”
Claim · model-written summary
UV reduced root weight in in vitro Mentha spicata.
- Taxon
- Mentha spicataMentha spicatat0
- Treatment
- UVe0
- Outcome
- root weighte0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“UV induced a marked change in architecture with a significant increase in axillary branches, and reductions in leaf area, plant height and root weight”
Claim · model-written summary
UV exposure significantly altered concentrations of IAA, GA7 and GA3 in Mentha spicata.
- Taxon
- Mentha spicataMentha spicatat0
- Outcome
- concentrations of hormones, including IAA, GA7, GA3e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“These changes were associated with significant alterations in concentrations of hormones, including IAA, GA7, GA3 and iP–9–G”
Claim · model-written summary
UV exposure significantly altered iP–9–G concentration in Mentha spicata.
- Taxon
- Mentha spicataMentha spicatat0
- Outcome
- iP–9–Ge0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“These changes were associated with significant alterations in concentrations of hormones, including IAA, GA7, GA3 and iP–9–G”
Claim · model-written summary
The hormone changes suggest a regulatory response to UV-B.
- Taxon
- Mentha spicataMentha spicatat0
- Outcome
- regulatory, rather than a stress responsee0
- Qualifier
- Changes in hormone concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“Changes in hormone concentrations suggest a regulatory, rather than a stress response to UV-B”
Claim · model-written summary
The authors propose UV application in vitro to manipulate Mentha spicata architecture.
- Taxon
- Mentha spicataMentha spicatat0
- Treatment
- UVe0
- Outcome
- application of UV in in vitro culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Mentha spicata (L.)”
e0“the application of UV in in vitro culture can be an innovative approach to manipulate plant architecture”
The same questions in other papers
uv · growth · Mentha spicata (spearmint)Positive and negative results
1 in the opposite direction
- no effect
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.