Abstract
The photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination with the predominance of red light (RL) or far red light (FRL) and infected with the fungus Fusarium oxisporum sp. (F.ox.) was studied. The predominance of RL or FRL contributed to an increase in the content of chlorophyll and carotenoids per dry leaf weight compared to the plants grown under white light (WL). In the infected plants grown under WL and RL regimes, an increase in the total content of chlorophyll and carotenoids was observed relative to healthy plants, and a decrease in the same parameters for FRL was noted. In healthy cucumber leaves grown under RL and FRL regimes, an increase in the activity of photosystem (PS)1 and PS2 in comparison with WL was observed. Infection of cucumber plants grown under WL did not cause any changes in the functional parameters of PS2 against the background of a slight reduction in PS1 complexes. Under RL and FRL regimes, a decrease in the photochemical activity of PS 1 and PS 2 in infected leaves was noted. The activity of ascorbate peroxidase - one of antioxidant enzymes in chloroplasts decreased in healthy cucumber leaves under RL and FRL compared to WL and increased in infected leaves compared to the healthy ones under all light regimes, especially strongly under RL. The results obtained demonstrate different response mechanisms for cucumber chloroplasts to the infection with a fungal pathogen, depending on the light conditions of growing.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Red or far-red light predominance increased chlorophyll and carotenoid content per dry leaf weight compared with white light.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- predominance of RL or FRLe1
- Outcome
- content of chlorophyll and carotenoidse1
- Direction
- increasee1
- Qualifier
- per dry leaf weighte1
- Comparator
- white light (WL)e1
- Setting
- LED illuminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination”
e1“The predominance of RL or FRL contributed to an increase in the content of chlorophyll and carotenoids per dry leaf weight compared to the plants grown under white light (WL)”
Claim · model-written summary
Infected plants under white and red light had increased total chlorophyll and carotenoid content relative to healthy plants.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- infectede2
- Interactor
- Fusarium oxisporum sp.e3pathogen
- Outcome
- total content of chlorophyll and carotenoidse2
- Direction
- increasee2
- Comparator
- healthy plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination”
e2“In the infected plants grown under WL and RL regimes, an increase in the total content of chlorophyll and carotenoids was observed relative to healthy plants”
e3“infected with the fungus Fusarium oxisporum sp. (F.ox.)”
Claim · model-written summary
Infected plants under far-red light had decreased total chlorophyll and carotenoid content.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- infectede2
- Interactor
- Fusarium oxisporum sp.e3pathogen
- Outcome
- total content of chlorophyll and carotenoidse2
- Direction
- decreasee4
- Qualifier
- for FRLe4
- Comparator
- healthy plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination”
e2“In the infected plants grown under WL and RL regimes, an increase in the total content of chlorophyll and carotenoids was observed relative to healthy plants”
e3“infected with the fungus Fusarium oxisporum sp. (F.ox.)”
e4“a decrease in the same parameters for FRL was noted”
Claim · model-written summary
Infection of cucumber grown under white light did not change the functional parameters of photosystem II.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Infectione5
- Outcome
- functional parameters of PS2e5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination”
e5“Infection of cucumber plants grown under WL did not cause any changes in the functional parameters of PS2”
Claim · model-written summary
Infection of cucumber grown under white light slightly reduced photosystem I complexes.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Infectione5
- Outcome
- PS1 complexese6
- Direction
- reductione6
- Qualifier
- slighte6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination”
e5“Infection of cucumber plants grown under WL did not cause any changes in the functional parameters of PS2”
e6“against the background of a slight reduction in PS1 complexes”
Claim · model-written summary
In healthy cucumber under red and far-red light, photosystem I and II activity increased compared with white light.
- Taxon
- cucumberCucumis sativuse7
- Treatment
- RL and FRL regimese7
- Outcome
- activity of photosystem (PS)1 and PS2e7
- Direction
- increasee7
- Comparator
- WLe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“In healthy cucumber leaves grown under RL and FRL regimes, an increase in the activity of photosystem (PS)1 and PS2 in comparison with WL was observed”
Claim · model-written summary
Infected leaves under red and far-red light had decreased photochemical activity of PS1 and PS2.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- infected leavese6
- Interactor
- Fusarium oxisporum sp.e3pathogen
- Outcome
- photochemical activity of PS 1 and PS 2e6
- Direction
- decreasee6
- Setting
- RL and FRL regimese6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthetic activity of 28-day-old cucumber plants of the Kustovy variety formed under LED illumination”
e3“infected with the fungus Fusarium oxisporum sp. (F.ox.)”
e6“Under RL and FRL regimes, a decrease in the photochemical activity of PS 1 and PS 2 in infected leaves was noted”
Claim · model-written summary
Ascorbate peroxidase activity in healthy cucumber chloroplasts decreased under red and far-red light compared with white light.
- Taxon
- cucumberCucumis sativuse4
- Organ / stage
- chloroplastse4
- Treatment
- RL and FRLe4
- Gene
- ascorbate peroxidasee4
- Outcome
- activity of ascorbate peroxidasee4
- Direction
- decreasede4
- Comparator
- WLe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The activity of ascorbate peroxidase - one of antioxidant enzymes in chloroplasts decreased in healthy cucumber leaves under RL and FRL compared to WL”
Claim · model-written summary
Ascorbate peroxidase activity increased in infected cucumber leaves compared with healthy leaves under all light regimes, especially under red light.
- Taxon
- cucumberCucumis sativuse4
- Treatment
- infectede5
- Gene
- ascorbate peroxidasee4
- Outcome
- activity of ascorbate peroxidasee4
- Direction
- increasede5
- Qualifier
- especially strongly under RLe5
- Comparator
- healthy onese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The activity of ascorbate peroxidase - one of antioxidant enzymes in chloroplasts decreased in healthy cucumber leaves under RL and FRL compared to WL”
e5“increased in infected leaves compared to the healthy ones under all light regimes, especially strongly under RL”
The same questions in other papers
infection · physiology: pigments · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
infection · physiology: photosynthesis · Cucumis sativus (cucumber)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
3 papers more in this group
See all 7 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.