Abstract
Three-year-old seedlings of two Tunisian provenances of cork oak (Quercus suber L.) differing in climatic conditions at their geographical origin were subjected to increasing light intensities. Gaâfour was the provenance from the driest site and Feija from the wettest site. Low-light adapted seedlings from both provenances were exposed to two light treatments: full sunlight (HL) and low light (LL, 15% sunlight) for 40 days. The CO2-response curve of leaf net photosynthesis (An-Ci curve) established under saturated photon flux density was used to compare photosynthetic parameters between leaves subjected to continuous low light (LL leaves) and leaves transferred from low to high light (HL leaves). Transfer from low to high light significantly increased net photosynthesis (An) and dark respiration (Rd) in Gaâfour provenance but not in Feija. After transfer to high irradiance, specific leaf area (SLA) did not change in either provenance. This suggested that the increase in photosynthetic capacity on a leaf area basis in HL leaves of Gaâfour provenance was not due to increased leaf thickness. Only the seedlings from the Gaâfour provenance were able to acclimate to high light by increasing Vcmax and Jmax.
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Claims 7
Claim · model-written summary
High-light transfer increased net photosynthesis in Gaâfour but not Feija.
- Taxon
- cork oak
Quercus subere1 - Material
- Gaâfoure0
- Treatment
- Transfer from low to high lighte0
- Outcome
- net photosynthesis (An)e0
- Direction
- increasede0
- Comparator
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transfer from low to high light significantly increased net photosynthesis (An) and dark respiration (Rd) in Gaâfour provenance but not in Feija”
e1“cork oak (Quercus suber L.)”
Claim · model-written summary
High-light transfer increased dark respiration in Gaâfour but not Feija.
- Taxon
- cork oakQuercus subere1
- Material
- Gaâfoure0
- Treatment
- Transfer from low to high lighte0
- Outcome
- dark respiration (Rd)e0
- Direction
- increasede0
- Comparator
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transfer from low to high light significantly increased net photosynthesis (An) and dark respiration (Rd) in Gaâfour provenance but not in Feija”
e1“cork oak (Quercus suber L.)”
Claim · model-written summary
High-light transfer did not increase net photosynthesis or respiration in Feija.
- Taxon
- cork oakQuercus subere1
- Material
- Feijae0
- Treatment
- Transfer from low to high lighte0
- Outcome
- net photosynthesis (An) and dark respiration (Rd)e0
- Direction
- no_changeinferrede0
- Comparator
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transfer from low to high light significantly increased net photosynthesis (An) and dark respiration (Rd) in Gaâfour provenance but not in Feija”
e1“cork oak (Quercus suber L.)”
Claim · model-written summary
Specific leaf area did not change in either provenance after high-light transfer.
- Taxon
- cork oakQuercus subere1
- Treatment
- transfer to high irradiancee0
- Outcome
- specific leaf area (SLA)e0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After transfer to high irradiance, specific leaf area (SLA) did not change in either provenance”
e1“cork oak (Quercus suber L.)”
Claim · model-written summary
In Gaâfour, increased photosynthetic capacity was interpreted as unrelated to increased leaf thickness.
- Taxon
- cork oakQuercus subere1
- Material
- Gaâfoure0
- Outcome
- photosynthetic capacity on a leaf area basise0
- Qualifier
- not due to increased leaf thicknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in photosynthetic capacity on a leaf area basis in HL leaves of Gaâfour provenance was not due to increased leaf thickness”
e1“cork oak (Quercus suber L.)”
Claim · model-written summary
Gaâfour seedlings acclimated to high light by increasing Vcmax.
- Taxon
- cork oakQuercus subere1
- Material
- Gaâfoure0
- Treatment
- high lighte0
- Outcome
- Vcmaxe0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only the seedlings from the Gaâfour provenance were able to acclimate to high light by increasing Vcmax and Jmax”
e1“cork oak (Quercus suber L.)”
Claim · model-written summary
Gaâfour seedlings acclimated to high light by increasing Jmax.
- Taxon
- cork oakQuercus subere1
- Material
- Gaâfoure0
- Treatment
- high lighte0
- Outcome
- Jmaxe0
- Direction
- increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only the seedlings from the Gaâfour provenance were able to acclimate to high light by increasing Vcmax and Jmax”
e1“cork oak (Quercus suber L.)”
The same questions in other papers
light · growth · Quercus suber (cork oak)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
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.