Abstract
Abstract To investigate the effects of drought and recovery on the transcript level of OePIP2.1 (a PIP2 aquaporin gene) in twigs, 2‐year‐old olive trees were subjected to a drought/rewatering treatment (the irrigation was suspended for a period of 4 weeks and restored for the following 4 weeks). Twig water potential, twig hydraulic resistance and incidence of embolisation in the twig were measured in parallel with gene expression under both drought stress and the following recovery. During drought, a decrease in twig water potential, an increase in twig hydraulic resistance and an increase in the extent of xylem vessel embolisation was observed in parallel with a decrease of aquaporin gene expression. Opposite trends were recorded during rewetting. A speculation on a possible contribution of OePIP2.1 aquaporin to modulate shoot embolism during drought and recovery is proposed.
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Claims 5
Claim · model-written summary
Drought decreased twig water potential.
- Taxon
- Olea europaea
Olea europaeat0 - Treatment
- droughte0
- Outcome
- twig water potentiale0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During drought, a decrease in twig water potential”
t0“Olea europaea”
Claim · model-written summary
Drought increased twig hydraulic resistance.
- Taxon
- Olea europaeaOlea europaeat0
- Treatment
- droughte0
- Outcome
- twig hydraulic resistancee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During drought, a decrease in twig water potential, an increase in twig hydraulic resistance”
t0“Olea europaea”
Claim · model-written summary
Drought increased xylem vessel embolisation.
- Taxon
- Olea europaeaOlea europaeat0
- Treatment
- droughte0
- Outcome
- extent of xylem vessel embolisatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During drought, a decrease in twig water potential, an increase in twig hydraulic resistance and an increase in the extent of xylem vessel embolisation”
t0“Olea europaea”
Claim · model-written summary
Drought reduced aquaporin gene expression.
- Taxon
- Olea europaeaOlea europaeat0
- Treatment
- droughtt0
- Gene
- OePIP2.1t0
- Outcome
- aquaporin gene expressione0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decrease of aquaporin gene expression”
t0“Expression of OePIP2.1 aquaporin gene and water relations of Olea europaea twigs during drought stress and recovery”
Claim · model-written summary
Rewatering reversed the drought trends in water potential, hydraulic resistance, embolisation and gene expression.
- Taxon
- Olea europaeaOlea europaeat0
- Treatment
- rewettinge0
- Outcome
- Opposite trendse0
- Direction
- Oppositee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Opposite trends were recorded during rewetting”
t0“Olea europaea”
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