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Vein clearing symptoms on sweetpotato leaves before macroalgae treatment: A. negative control; B. positive control; C. E. spinosum treatment; D. E. cottonii treatment; and E. E. serra treatment
Source publication
Listihani L, Yuniti IGAD, Sapanca PLY, Pandawani NP, Selangga DGW. 2023. The antiviral potential of macroalgae in suppressing Sweet potato leaf curl virus (SPLCV) infection in sweet potatoes. Biodiversitas 24: 4079-4086. Sweet potato leaf curl virus (SPLCV) was first found in sweet potatoes in Indonesia in 2022. Prevention of spread of virus is ess...
Citations
... Various control efforts have been attempted, from physical control methods, such as insecticide spraying to other methods like designing resistant varieties by crossbreeding and biotechnology. Various research was performed to overcome the problem, such as inducing resistance with antivirus contained in macroalgae extract (Santosa 2017 (Listihani et al. 2023c). According to Listihani et al. (2023c), the alternative solution in controlling viruses is by using extracts containing compounds that improve plant resistance against viral infections or their carrying vector. ...
... Various research was performed to overcome the problem, such as inducing resistance with antivirus contained in macroalgae extract (Santosa 2017 (Listihani et al. 2023c). According to Listihani et al. (2023c), the alternative solution in controlling viruses is by using extracts containing compounds that improve plant resistance against viral infections or their carrying vector. Microalgae usage has a lot of advantages and has economic value to support local community's life (Setiawati et al. 2017), such as reducing the cost of plant pest organism control, no dangerous chemical residue, and can be received, and used by the farmers for a long period of time. ...
... The aromatic hydrocarbon compound in low amounts can lower the growth and development of microbes. E. cottoni also contains flavonoids, saponins, steroids, phenol hydroquinone, and triterpenoids (Listihani et al. 2023c). The active compounds in E. cottonii extracts can suppress the Begomovirus disease incidence up to 40% and suppress the disease severity to 60.76% (Listihani et al. 2023c). ...
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.
