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Fahd Shaukt, Muhammad, 2013. Seed bio-priming with Serratia plymuthica HRO-C48 for the control of Verticillium longisporum and Phoma lingam in Brassica napus L. spp. oleifera. Second cycle, A2E. Uppsala: SLU, Dept. of Forest Mycology and Plant Pathology

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Abstract

Oilseed rape is one of the most important crops all over the world. It is susceptible to many fungal pathogens including soil-borne Verticillium longisporum (causes Verticillium wilt) and Phoma lingam (causes blackleg). Available control measures are not sufficient to control these diseases. One way to increase both quality and quantity of crop yield is by treating seeds with beneficial microorganisms before sowing.
Effect of seed bio-priming with the antagonistic bacterium, Serratia plymuthica HRO-C48 was investigated in oilseed rape (Brassica napus L. spp. oleifera) against wilt and black leg. Rifampicin-resistant strain of the bacterium was used in this study. The effect on wilt was assessed in cultivars Visby, Trabant, KWS 63 and KWS 136 in growth chamber experiments while the effect on black leg was observed in presence and absence of fungicides (Folicur © or Caramba ©) in Visby cultivar the field trials on-going at Birkenmoor and Hohenlienth in Germany. V. longisporum was artificially inoculated and Phoma infection in the field trail was naturally occurring.
Disease severity and plant recorded in plants with V. longisporum were compared with that in presence of S. plymuthica HRO-C48rif . In field experiments, leaf infestation frequency and number of leaf pycnidia due to Phoma were compared between the treatments. Bacterial population of inoculated S. plymuthica HRO-C48rif was also estimated in the rhizospheres of both growth chamber and field experiments. Summarised results showed that S. plymuthica HRO-C48rif was able to colonise the rhizospheres of oilseed rape in both growth chamber and field trails but it was not able to reduce the infections by V. longisporum or Phoma lingam in a satisfactory way. Furthermore, the application of bacterium seemed compatible with the fungicides and the bacterial populations declined below the detection level.

Main title:Seed bio-priming with Serratia plymuthica HRO-C48 for the control of Verticillium longisporum and Phoma lingam in Brassica napus L. spp. oleifera
Authors:Fahd Shaukt, Muhammad
Supervisor:Alström, Sadhna and Andersson, Björn
Examiner:Yuen, Jonathan
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2013
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:NM008 Plant Biology - Master's Programme 120 HEC
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Keywords:Oilseed rape, Verticillium longisporum, Seed bio-priming, population dynamics, biological control
URN:NBN:urn:nbn:se:slu:epsilon-s-2020
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-2020
Subjects:Plant ecology
Language:English
Deposited On:01 Feb 2013 13:18
Metadata Last Modified:01 Feb 2013 13:18

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