Analysis of white rust research progress through bibliography

Abstract

Albugo candida (Pers. Ex. Lev.) Kuntze is a wide spread pathogen of cruciferous crops causing heavy yield losses all over the world. Molecular and phylogenetic studies of the family Albuginaceae revealed four distinct lineages: Albugo s.str., Albugo s.l., Pustula s.l. and Wilsoniana s.l. It’s host range is more than 300 hosts. The host specificity of A. candida has been recorded from more than eight countries of the world. Studies on host-pathogen interaction, fine structures of hyphae, mycelium, haustoria, sporangia, zoospores and oospores have been conducted through histopathology, electron microscopy, scanning electron microscopy and transmission electron microcopy. The pathogen survives through mycelium, sporangia and oospores. Germination of sporangia and oospores has been determined. Biochemical host-pathogen interaction studies have been conducted. Studies on identification and cloning of plant defense resistance genes are in progress. Genome sequencing of A. candida and A. laibachii have been made. Very useful and reproducible techniques have been developed on the aspects viz., growth chamber inoculation, oospore germination, induction of stag-heads, detached leaf culture, In vitro callus culture, temperature effects on disease development and oospore formation, process of infection, association of white rust and downy mildew, pathogenic variability, virulence spectrum, host resistance, genetic of host-parasite interaction, slow white rusting and chemical control. Future research areas have been suggested.