Abstract
Abstract. Temaja IGRM, Selangga DGW, Sudiarta IP, Listhiani L. 2024. Antiviral activity of Eucheuma cottonii to control Pepper yellow leaf curl virus. Biodiversitas 25: 1615-1622. The chili pepper plant in Bali is often infected with yellow curl symptoms caused by Pepper yellow leaf curl Indonesia virus (PYLCIV). The virus is always present in the field and no control measure has been found effective to suppress the PYLCIV infection. Control efforts using macroalgae extract have been frequently used and are able to suppress plant virus infection, but no report on its effectiveness in suppressing PYLCIV infection. This research aimed to analyze the effect of Eucheuma cottonii Weber Bosse macroalgae extract in suppressing PYLCIV infection on chili pepper plants in Bali. The observed parameters were symptom changes, disease incidence and severity, virus confirmation by PCR, and phytochemical analysis. Chili pepper plants infected by PYLCIV before E. cottonii application showed moderate to severe symptoms, but after E. cottonii application plants turned symptomless or showed light symptoms. The PYLCIV disease incidence in chili pepper Seret and Pelita8 cultivars before application was 100%, and after application ranged from 45-55%. The PYLCIV disease severity in chili pepper Seret and Pelita 8 cultivars before application ranged between 68-72%, and after application ranged between 25-34%. PYLCV on chili pepper Seret and Pelita 8 cultivar that were treated with E. cottonii produced lighter DNA band compared to positive control (C+). Major compounds found in E. cottonii extract were propanoic acid, ethyl ester; n-propyl acetate; sec-Butyl acetate; Toluene; Bicyclo [4.2.0] octa-1, 3, 5- triene; and styrene. The E. cottonii extract was able to suppress the PYLCIV infection on chili pepper plants.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-sa. 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 6
Claim · model-written summary
Chili pepper plants with PYLCIV showed moderate to severe symptoms before E. cottonii application and symptomless or light symptoms after application.
CapsicumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Chili pepper plants infected by PYLCIV before E. cottonii application showed moderate to severe symptoms, but after E. cottonii application plants turned symptomless or showed light symptoms”
Claim · model-written summary
PYLCIV disease incidence in chili pepper Seret and Pelita8 cultivars decreased after E. cottonii application from 100% to 45-55%.
- Material
- Seret and Pelita8e2
- Treatment
- E. cottonii applicatione1
- Interactor
- PYLCIVe2pathogen
- Outcome
- PYLCIV disease incidencee2
- Direction
- decreaseinferrede2
- Value
- 45-55%e2
- Comparator
- before applicatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Chili pepper plants infected by PYLCIV before E. cottonii application showed moderate to severe symptoms, but after E. cottonii application plants turned symptomless or showed light symptoms”
e2“The PYLCIV disease incidence in chili pepper Seret and Pelita8 cultivars before application was 100%, and after application ranged from 45-55%”
Claim · model-written summary
PYLCIV disease severity in chili pepper Seret and Pelita 8 cultivars decreased after E. cottonii application from 68-72% to 25-34%.
- Material
- Seret and Pelita 8e3
- Treatment
- E. cottonii applicatione1
- Interactor
- PYLCIVe3pathogen
- Outcome
- PYLCIV disease severitye3
- Direction
- decreaseinferrede3
- Value
- 25-34%e3
- Comparator
- before applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Chili pepper plants infected by PYLCIV before E. cottonii application showed moderate to severe symptoms, but after E. cottonii application plants turned symptomless or showed light symptoms”
e3“The PYLCIV disease severity in chili pepper Seret and Pelita 8 cultivars before application ranged between 68-72%, and after application ranged between 25-34%”
Claim · model-written summary
PYLCV DNA band on chili pepper Seret and Pelita 8 treated with E. cottonii was lighter than in the positive control.
- Material
- Seret and Pelita 8e4
- Treatment
- treated with E. cottoniie4
- Interactor
- PYLCVe4pathogen
- Outcome
- DNA bande4
- Direction
- lightere4
- Comparator
- positive control (C+)e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“PYLCV on chili pepper Seret and Pelita 8 cultivar that were treated with E. cottonii produced lighter DNA band compared to positive control (C+)”
Claim · model-written summary
Major compounds identified in the E. cottonii extract were propanoic acid, ethyl ester, n-propyl acetate, sec-Butyl acetate, Toluene, Bicyclo [4.2.0] octa-1, 3, 5- triene and styrene.
- Outcome
- Major compounds found in E. cottonii extracte5
Not reportedTaxon
Verbatim
e5“Major compounds found in E. cottonii extract were propanoic acid, ethyl ester; n-propyl acetate; sec-Butyl acetate; Toluene; Bicyclo [4.2.0] octa-1, 3, 5- triene; and styrene”
Claim · model-written summary
The E. cottonii extract was able to suppress PYLCIV infection on chili pepper plants.
- Treatment
- E. cottonii extracte6
- Interactor
- PYLCIVe6pathogen
- Outcome
- PYLCIV infectione6
- Direction
- suppresse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The E. cottonii extract was able to suppress the PYLCIV infection on chili pepper plants”
The same questions in other papers
botanical · disease · Capsicum (peppers)Results agree
23 papers in the same direction as this paper
- positive
- positive
- positive
20 papers more in this group
See all 24 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.