Abstract
Background: Potato plants are usually subjected to numerous diseases caused by viruses. Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants and is mainly responsible for the majority of losses caused in potato production. Objective: The present study aims to evaluate the potential effect of carrageenan (virucide) which was extracted from red algae (Acanthophora specifira) in an induction of systemic acquired immunity for bio-control of PVY infection in potato plants. Methods: Potato tubers (Solanium tuberoisum cv. spounta) were obtained. The virus isolate was obtained and maintained on Datura metel plant. Specimens of the red alga Acanthophora specifira were collected from El Shoaiba coast, the eastern part of Saudi Arabia; Red Sea. The tested material carrageenan was extracted from the selected seaweeds species as antiviral agents. The infectious sap was prepared and inoculated on the primary and free potato leaves. The tested plants were sub-classified into 5 groups; 2 healthy groups (control group and virucidetreated group), 3 PVY infected plants groups (one without virucide, PVY infected plants either before or after virucide). Reduction in the disease severity was recorded and inhibition in PVY infectivity as a result of periodical treatment of foliar potato plants with virucide (carrageenan) was assessed in pre and post-treatment groups. Results: PVY infection resulted in significant decrease in shoot length, leave an area and fresh and dry weight of shoots. Improvement of morphological characters of periodically-treated foliar with virucide (carrageenan) was observed. Chlorophyll and carotenoids contents were increased in PVY infected foliar potato plants treated with virucide (carrageenan). Biochemical markers as indicators for systemic acquired resistance were detected via significantly increased total proteins, phenol compounds, free proline (PO), polyphenol oxidase (PPO) and superoxide dismatase (SOD) enzyme activities. As well as expressed proteins of induced potato plants were determined using sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). The results indicated that newly expressed proteins were produced and a difference in number and density of bands in foliar treatment plants with virucide (carrageenan) were compared with healthy ones. Conclusion: It has been suggested that the induction of systemic acquired resistance (SAR) was successfully achieved; it also protected potato plants against PVY infection.
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Claims 8
Claim · model-written summary
PVY infection decreased shoot length, leaf area, and fresh and dry shoot weight of potato plants.
- Taxon
- potato plants
Solanum tuberosume1 - Treatment
- PVY infectione2
- Interactor
- PVY
Potato virus Ye2pathogen - Outcome
- shoot length, leave an area and fresh and dry weight of shootse2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants”
e2“PVY infection resulted in significant decrease in shoot length, leave an area and fresh and dry weight of shoots”
Claim · model-written summary
Periodic foliar carrageenan treatment improved morphological characters of potato plants.
- Taxon
- potato plantsSolanum tuberosume1
- Treatment
- periodically-treated foliar with virucide (carrageenan)e2
- Outcome
- morphological characterse2
- Direction
- Improvemente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants”
e2“Improvement of morphological characters of periodically-treated foliar with virucide (carrageenan) was observed”
Claim · model-written summary
Chlorophyll and carotenoid contents increased in PVY-infected potato plants treated with carrageenan.
- Taxon
- potato plantsSolanum tuberosume3
- Treatment
- virucide (carrageenan)e3
- Interactor
- PVYPotato virus Ye3pathogen
- Outcome
- Chlorophyll and carotenoids contentse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Chlorophyll and carotenoids contents were increased in PVY infected foliar potato plants treated with virucide (carrageenan)”
Claim · model-written summary
Total proteins, phenol compounds and free proline increased significantly in the induced potato plants.
- Taxon
- potato plantsSolanum tuberosume1
- Outcome
- total proteins, phenol compounds, free prolinee4
- Direction
- significantly increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants”
e4“Biochemical markers as indicators for systemic acquired resistance were detected via significantly increased total proteins, phenol compounds, free proline (PO), polyphenol oxidase (PPO) and superoxide dismatase (SOD) enzyme activities”
Claim · model-written summary
Polyphenol oxidase and superoxide dismutase enzyme activities increased significantly in the induced potato plants.
- Taxon
- potato plantsSolanum tuberosume1
- Outcome
- polyphenol oxidase (PPO) and superoxide dismatase (SOD) enzyme activitiese4
- Direction
- significantly increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants”
e4“Biochemical markers as indicators for systemic acquired resistance were detected via significantly increased total proteins, phenol compounds, free proline (PO), polyphenol oxidase (PPO) and superoxide dismatase (SOD) enzyme activities”
Claim · model-written summary
Newly expressed proteins were produced in the induced potato plants.
- Taxon
- potato plantsSolanum tuberosume1
- Outcome
- newly expressed proteinse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants”
e5“newly expressed proteins were produced and a difference in number and density of bands in foliar treatment plants with virucide (carrageenan) were compared with healthy ones”
Claim · model-written summary
Protein band number and density differed in carrageenan-treated potato plants compared with healthy plants.
- Taxon
- potato plantsSolanum tuberosume1
- Treatment
- foliar treatment plants with virucide (carrageenan)e5
- Outcome
- number and density of bandse5
- Comparator
- healthy onese5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Potato virus Y belongs to a group of potyvirus that causes serious diseases to potato plants”
e5“newly expressed proteins were produced and a difference in number and density of bands in foliar treatment plants with virucide (carrageenan) were compared with healthy ones”
Claim · model-written summary
Induction of systemic acquired resistance by carrageenan was reported to protect potato plants against PVY infection.
- Taxon
- potato plantsSolanum tuberosume6
- Treatment
- induction of systemic acquired resistance (SAR)e6
- Interactor
- PVYPotato virus Ye6pathogen
- Outcome
- protected potato plants against PVY infectione6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“the induction of systemic acquired resistance (SAR) was successfully achieved; it also protected potato plants against PVY infection”
The same questions in other papers
carrageenan · Potato virus Y · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
infection · Potato virus Y · Solanum tuberosum (potato)Positive and negative results
11 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.