Screening of four lignin additives as uv Protectants to baculovirus
Abstract: Ultraviolet in sunlight is considered the main factor affecting persistence of the baculovirus under field conditions. Many efforts were devoted to improve the persistence of baculoviruses by using the lignin products as natural UV protectants. In present study, four lignin products designated as LPl, LP2, LP3 and LP4 were evaluated as UV protectant additives for the persistence of Spodoptera littoralis nucleopolyhedrovirus (SpliMNPV). The irradiation tests were carried out in Egypt using three irradiation exposure systems; simulated UV lamps (OSRAM), natural sunlight on Petri-dishes and natural sunlight on cotton foliage. The addition of lignin increased the half-life period of the virus up to about 6.6 fold for simulated sunlight system in Petri-dishes. Also, the best UV protectant effect additive (LP4) proved to be more efficient than either magnesium lignosulfonate (Mg-lignosulfonate) or fluorescent brightener-28 (Tinopal LPW).
Different concentrations of LP4 (l,5 and 10%) resulted in a protection rate of 1.92, 3.65 and 151.89 folds which are translated to a calculated 5.31, 10.13 and 420.98 days exposure in the field.
The present study reveals the potential effect of lignin derivative as a UV protectant, especially under the sunny Egyptian field conditions.
Publication year 2003
Pages 165-178
Availability location معهد بحوث وقاية النباتات
Availability number
Organization Name
City القاهرة
serial title Bull. ent. Soc.Egypt, Econ
ISSN 1110-0885
Department Cutworm and Mole Cricket
Author(s) from ARC
External authors (outside ARC)
    صلاح النجار كلية الزراعة -جامعة القاهرة
    محمد الشيخ كلية الزراعة- جامعة القاهرة
    سعيد السلامونى كلية الزراعة - جامعة القاهرة
Agris Categories Pests of plants
AGROVOC
TERMS		 Additives. Baculoviridae. Lignins. Spodoptera littoralis. Ultraviolet radiation.
Publication Type Journal
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