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Protomyces crepidis-paludosae Büren on Crepis paludosa (L.) Moench (SAV): leaf spots and galls along small parts of main vein on leaf of host plant.
Source publication
Two interesting species of Protomyces Unger collected recently in the Tatra Mts are described, illustrated in detail and compared with similar taxa. Protomyces crepidis-paludosae Büren on Crepis paludosa (L.) Moench is a new species for Slovakia. Protomyces macrosporus Unger on Laserpitium latifolium L. is a new fungus/host combination in the Carpa...
Context in source publication
Citations
... (Khare et al., 2014) and Boerhaavia diffusa (Verma et al., 2014). Bacigalova et al. (2008) found the association of the different Protomyces spp. causing galls in different families. ...
Coriander (Coriandrum sativum L.) is an important highly nutritive crop belonging to family Apiaceae. To meet increasing global demand and consumption, coriander productivity must be enhanced. However, biotic stresses such as diseases have impeded coriander cultivation both in the tropics and subtropics. Of them, stem gall of coriander, incited by the fungus Protomyces macrosporus Unger, is one of the most common, widespread and serious diseases throughout the world and causes significant yield losses. Symptomatology, biology, and etiology of stem gall and its control through fungicides, bio-product and bio-control have not been widely studied, and substantial information is still required on the inoculum potential, growth models and epidemiological parameters of stem gall, the influence of changing the climate, impact of extensive use of fungicides and disease resistance. These critical factors may influence the development and emergence of stem gall. Because of the increasing demands of coriander in the world, control of stem gall is gaining importance. The present review deals briefly with different aspects of stem gall disease with major emphasis on its ecology, pathology, epidemiology, and management. Some new approaches such as biological control, integrated management strategies, and some other aspects are also discussed.
To know the health status of crops germplasm received from various sources, seed health testing (SHT) is a routine process for long-term
conservation of healthy seeds in the National Genebank at ICAR-National Bureau of Plant Genetic Resources, New Delhi. In this process, 1328
accessions of coriander were received in the Plant Quarantine Division for SHT through Germplsm Conservation Division. In the present study,
SHT revealed that most of the samples of coriander in which the seeds are deformed suffer from stem gall (seed gall) disease caused by
Protomycesmacrosporus. Infection of P. macrosporus greatly affects the size and quality of seeds. As a result, infected seeds become excessively
larger (from 6.46x5.01 to 12.76x3.94 mm) as compared to normal seeds and the germination capacity of the seeds is also lost. Deformity
in size and measurement of infected seeds compared to healthy seeds indicates susceptibility to stem gall disease. Our observation revealed that
the chlamydospores present in the infected seeds survive for a long period (~ 2 years) and if such infected seeds are conserved for long term in
the National Genebank, it is possible that along with the seeds, dormant chlamydospores also survive. While on the one hand such diseased seed
can prove to be the carrier in spreading the pathogen from one place to another, on the other hand, market demand will be affected which will
result in lower prices for the farmers cultivating coriander.
