Abstract
China virus is a species of the widespread geminiviruses. The infection of Nicotiana benthamiana by Tomato yellow leaf curl China virus (TYLCCNV) causes a reduction in photosynthetic activity, which is part of the viral symptoms. C1 is a viral factor encoded by the betasatellite DNA (DNA) accompanying TYLCCNV. It is a major viral pathogenicity factor of TYLCCNV. To elucidate the effect of C1 on plants' photosynthesis, we measured the relative chlorophyll (Chl) content and Chl fluorescence in TY-LCCNV-infected and C1 transgenic N. benthamiana plants. The results showed that Chl content is reduced in TYLCCNV A-infected, TYLCCNV A plus DNA (TYLCCNV A + )-infected and C1 transgenic plants. Further, changes in Chl fluorescence parameters, such as electron transport rate, F v /F m , NPQ, and qP, revealed that photosynthetic efficiency is compromised in the aforementioned N. benthamiana plants. The presense of C1 aggravated the decrease of Chl content and photosynthetic efficiency during viral infection. Additionally, the real-time quantitative PCR analysis of oxygen evolving complex genes in photosystem II, such as PsbO, PsbP, PsbQ, and PsbR, showed a significant reduction of the relative expression of these genes at the late stage of TYLCCNV A + infection and at the vegetative stage of C1 transgenic N. benthamiana plants. In summary, this study revealed the pathogenicity of TYLCCNV in photosynthesis and disclosed the effect of C1 in exacerbating the damage in photosynthesis efficiency by TYLCCNV infection.
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Claims 7
Claim · model-written summary
Chl content is reduced in N. benthamiana infected with TYLCCNV A
- Taxon
- Nicotiana benthamiana
Nicotiana benthamianae1 - Treatment
- TYLCCNV A-infectede2
- Interactor
- Tomato yellow leaf curl China virusTomato yellow leaf curl China viruse1pathogen
- Outcome
- Chl contente2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The infection of Nicotiana benthamiana by Tomato yellow leaf curl China virus (TYLCCNV) causes a reduction in photosynthetic activity”
e2“The results showed that Chl content is reduced in TYLCCNV A-infected, TYLCCNV A plus DNA (TYLCCNV A + )-infected and C1 transgenic plants”
Claim · model-written summary
Chl content is reduced in N. benthamiana infected with TYLCCNV A plus DNA beta satellite
- Taxon
- Nicotiana benthamianaNicotiana benthamianae1
- Treatment
- TYLCCNV A plus DNA (TYLCCNV A + )-infectede2
- Interactor
- Tomato yellow leaf curl China virusTomato yellow leaf curl China viruse1pathogen
- Outcome
- Chl contente2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The infection of Nicotiana benthamiana by Tomato yellow leaf curl China virus (TYLCCNV) causes a reduction in photosynthetic activity”
e2“The results showed that Chl content is reduced in TYLCCNV A-infected, TYLCCNV A plus DNA (TYLCCNV A + )-infected and C1 transgenic plants”
Claim · model-written summary
Chl content is reduced in C1 transgenic N. benthamiana plants
- Taxon
- Nicotiana benthamianaNicotiana benthamianae1
- Treatment
- C1 transgenic plantse2
- Gene
- C1e2
- Outcome
- Chl contente2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The infection of Nicotiana benthamiana by Tomato yellow leaf curl China virus (TYLCCNV) causes a reduction in photosynthetic activity”
e2“The results showed that Chl content is reduced in TYLCCNV A-infected, TYLCCNV A plus DNA (TYLCCNV A + )-infected and C1 transgenic plants”
Claim · model-written summary
Photosynthetic efficiency is compromised in N. benthamiana plants infected with TYLCCNV A, TYLCCNV A plus DNA beta satellite, or carrying C1
- Taxon
- N. benthamianaNicotiana benthamianae3
- Treatment
- TYLCCNV A-infected, TYLCCNV A plus DNA (TYLCCNV A + )-infected and C1 transgenic plantse2
- Outcome
- photosynthetic efficiencye3
- Direction
- compromisede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The results showed that Chl content is reduced in TYLCCNV A-infected, TYLCCNV A plus DNA (TYLCCNV A + )-infected and C1 transgenic plants”
e3“photosynthetic efficiency is compromised in the aforementioned N. benthamiana plants”
Claim · model-written summary
The presence of C1 aggravates the decrease of Chl content and photosynthetic efficiency during viral infection
- Taxon
- N. benthamianaNicotiana benthamianae3
- Treatment
- presense of C1e4
- Gene
- C1e4
- Outcome
- decrease of Chl content and photosynthetic efficiencye4
- Direction
- aggravatede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“photosynthetic efficiency is compromised in the aforementioned N. benthamiana plants”
e4“The presense of C1 aggravated the decrease of Chl content and photosynthetic efficiency during viral infection”
Claim · model-written summary
PsbO, PsbP, PsbQ and PsbR relative expression is significantly reduced at the late stage of TYLCCNV A plus infection
- Taxon
- N. benthamianaNicotiana benthamianae3
- Organ / stage
- late stagee6
- Treatment
- TYLCCNV A + infectione6
- Gene
- PsbO, PsbP, PsbQ, and PsbRe5
- Outcome
- relative expression of these genese6
- Direction
- reductione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“photosynthetic efficiency is compromised in the aforementioned N. benthamiana plants”
e5“the real-time quantitative PCR analysis of oxygen evolving complex genes in photosystem II, such as PsbO, PsbP, PsbQ, and PsbR”
e6“showed a significant reduction of the relative expression of these genes at the late stage of TYLCCNV A + infection”
Claim · model-written summary
PsbO, PsbP, PsbQ and PsbR relative expression is significantly reduced in C1 transgenic N. benthamiana plants at the vegetative stage
- Taxon
- N. benthamianaNicotiana benthamianae7
- Organ / stage
- vegetative stagee7
- Treatment
- C1 transgenice7
- Gene
- PsbO, PsbP, PsbQ, and PsbRe5
- Outcome
- relative expression of these genese6
- Direction
- reductione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the real-time quantitative PCR analysis of oxygen evolving complex genes in photosystem II, such as PsbO, PsbP, PsbQ, and PsbR”
e6“showed a significant reduction of the relative expression of these genes at the late stage of TYLCCNV A + infection”
e7“and at the vegetative stage of C1 transgenic N. benthamiana plants”
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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.