Journal of Pure and Applied MicrobiologyVol. 2 No. 1

Antiphytoviral Potentialities of Algal Extracts against Cucumber Mosaic Virus

Abdel-Moneim M. Galal1 and Idris M. Al-Turk2

1Department of Botany, Faculty of Science, Zagazig University, Zagazig, Egypt. 2Department of Biology, Faculty of Science, Taibah University, Al-Madinah Al-Monawarah, Kingdom of Saudi Arabia

Received on 28 October 2007 and accepted on 16 December 2007



Twelve algal species belonging to Chlorophyta (6), Halophyte (1) and Rhodophyta (4) were screened for their antiphytoviral activity against cucumber mosaic virus (CMV) infected cucumber plants. They collected from the red sea at Yanbua shore, Kingdom of Saudi Arabia. Ethyl alcohol extracts or Lectin preparations of Ulva linza, Enteromorpha intestinaiis, Cladophora glomerata, Caulerpa verticillatta, Chara blatic Nitella cernua ( Chlorophyta ), Ectocarpus globifer ,Dictyota dichotooma ,Fucus vesiculosus ,Fucus serratus, Sargassum vulgare (Phaephyta ), Polysiphonia sp.( Rhodophyta ) were tested in vitro and in vivo against the infectivity of CMV. Induction of resistance in cucumber plants were recorded as treatment were done before virus inoculation at different periods. Also acquired resistance against CMV was observed as the cucumber seeds were soaked in algal extracts at different periods. The chlorophyll contents of the treated cucumber plants were more or less similar with that recorded in healthy plants.

Keywords : Marine algae, ethanolic extracts, lectin preparation, antiphytoviral, pigments.