Abstract
Climate change scenarios increase the frequency of combined episodes of drought, heat and high UV radiation, particularly in the Mediterranean region where dryland farming of olive (Olea europaea L.) orchards remains a common practice. Nonirrigated olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments. Interestingly, the DH+UV-B treatment produced higher photosynthetic pigment contents than drought-stressed plants. Concerning oxidative status, the DH+UV-B treatment induced similar lipid peroxidation levels and only cell membrane permeability was higher than in drought-stressed plants. On other hand, drought-stressed plants showed higher levels of anthocyanins and proline. Our data suggest that plants grown under dryland conditions modulated some tolerance mechanisms that may prevent cumulative damages by other stressors. Moreover, drought-stressed and DH+UV-B plants were able to recover their physiological performance in a similar way. These data represent an important contribution to understanding how dryland -grown olive plants will cope with climate change.
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Claims 8
Claim · model-written summary
Drought reduced relative water content compared with irrigation.
- Taxon
- olive
Olea europaeae0 - Treatment
- drought treatmente0
- Outcome
- relative water contente0
- Direction
- lowere0
- Comparator
- irrigated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content”
Claim · model-written summary
Combined shock did not further aggravate the lower water content.
- Taxon
- oliveOlea europaeae0
- Treatment
- DH+UV-B shocke0
- Outcome
- relative water contente0
- Direction
- not aggravatede0
- Comparator
- drought treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied”
Claim · model-written summary
Effective quantum yield of PSII was similar between drought and combined shock.
- Taxon
- oliveOlea europaeae0
- Treatment
- DH+UV-B treatmentse0
- Outcome
- effective quantum yield of PSIIe0
- Direction
- similare0
- Comparator
- drought-stressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments”
Claim · model-written summary
Combined shock gave higher photosynthetic pigment contents than drought alone.
- Taxon
- oliveOlea europaeae0
- Treatment
- DH+UV-B treatmente0
- Outcome
- photosynthetic pigment contentse0
- Direction
- highere0
- Comparator
- drought-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments. Interestingly, the DH+UV-B treatment produced higher photosynthetic pigment contents than drought-stressed plants”
Claim · model-written summary
Combined shock yielded similar lipid peroxidation to drought alone.
- Taxon
- oliveOlea europaeae0
- Treatment
- DH+UV-B treatmente0
- Outcome
- lipid peroxidation levelse0
- Direction
- similare0
- Comparator
- drought-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments. Interestingly, the DH+UV-B treatment produced higher photosynthetic pigment contents than drought-stressed plants. Concerning oxidative status, the DH+UV-B treatment induced similar lipid peroxidation levels”
Claim · model-written summary
Combined shock raised cell membrane permeability relative to drought alone.
- Taxon
- oliveOlea europaeae0
- Treatment
- DH+UV-B treatmente0
- Outcome
- cell membrane permeabilitye0
- Direction
- highere0
- Comparator
- drought-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments. Interestingly, the DH+UV-B treatment produced higher photosynthetic pigment contents than drought-stressed plants. Concerning oxidative status, the DH+UV-B treatment induced similar lipid peroxidation levels and only cell membrane permeability was higher than in drought-stressed plants”
Claim · model-written summary
Drought alone gave higher anthocyanin and proline levels than combined shock.
- Taxon
- oliveOlea europaeae0
- Treatment
- drought-stressed plantse0
- Outcome
- levels of anthocyanins and prolinee0
- Direction
- highere0
- Comparator
- DH+UV-B treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments. Interestingly, the DH+UV-B treatment produced higher photosynthetic pigment contents than drought-stressed plants. Concerning oxidative status, the DH+UV-B treatment induced similar lipid peroxidation levels and only cell membrane permeability was higher than in drought-stressed plants. On other hand, drought-stressed plants showed higher levels of anthocyanins and proline”
Claim · model-written summary
Drought and combined shock plants recovered physiological performance similarly.
- Taxon
- oliveOlea europaeae0
- Treatment
- DH+UV-Be0
- Outcome
- physiological performancee0
- Direction
- similare0
- Qualifier
- recovere0
- Comparator
- drought-stressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“olive plants (drought treatment) were subjected to an episode of heat plus UV-B radiation shock (DH+UV-B treatment) for 2 days. After the treatments, plants were allowed to grow under irrigated conditions (recovery). Compared with irrigated plants, drought treatment induced lower relative water content but this status was not aggravated when DH+UV-B shock was applied. Additionally, the effective quantum yield of PSII was similar in the drought-stressed and DH+UV-B treatments. Interestingly, the DH+UV-B treatment produced higher photosynthetic pigment contents than drought-stressed plants. Concerning oxidative status, the DH+UV-B treatment induced similar lipid peroxidation levels and only cell membrane permeability was higher than in drought-stressed plants. On other hand, drought-stressed plants showed higher levels of anthocyanins and proline. Our data suggest that plants grown under dryland conditions modulated some tolerance mechanisms that may prevent cumulative damages by other stressors. Moreover, drought-stressed and DH+UV-B plants were able to recover their physiological performance in a similar way”
The same questions in other papers
uv · physiology: photosynthesis · Olea europaea (common olive)Positive and negative results
2 in the opposite direction
- no effect
- negative
drought · physiology: water · Olea europaea (common olive)Positive and negative results
15 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
14 papers more in this group
See all 18 papers →uv · physiology: oxidative · Olea europaea (common olive)Results agree
1 paper in the same direction as this paper
- 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.