Plant Pathology core courses

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					                                     2009 Revised
                              Plant Pathology Core Series
Fall Quarter (Year 1)

PLP 120- required of all unless the equivalent has been taken elsewhere

Winter Quarter: 2 modules, each 5 weeks

PLP 202A. Advanced Plant Pathology: Introductory module. 2 units, Three 1 hour lectures,
one 1 hour discussion per week

   1. Symbiotic relationships in nature: organelles; legume/Rhizobium nodules, epiphytic and
        endophytic microbes
   2. The evolutionary significance of parasitism and the Red Queen hypothesis
   3. The ecological roles of parasitism in native plant communities: the Janzen Connell
        Hypothesis and frequency dependent selection.
   4. Diseases in native plant communities: rubber leaf blight, anther smut and flax rust
   5. Exotic diseases in native ecosystems: chestnut blight and others
   6. The transition to agriculture: powdery mildew of barley in native and managed plant
   7. Powdery mildew of barley (continued)
   8. Pathways to pathogenesis: how endophytes become latent pathogens
   9. Genetics of pathogen populations breeding biology and other factors that influence
        changes in virulence.
   10. Population genetics of host-pathogen interactions: rust diseases of wheat
   11. Ecology of soil microbes in agroecosystems
   12. The influence of plant roots and agricultural practices on the activity of soilborne
   13. The phyllosphere as a theatre for microbial activity – the effects of host condition,
        environment and competition on potential pathogens.
   14. Disease cycles – using our understanding of pathogen biology to develop management
   15. Future directions

PLP 202B. Advanced Plant Pathology: Bacteriology. 2 units, Three 1 hour lectures, one 1
hour discussion per week

   1. Course introduction and requirements. Overview of the major groups of phytopathogenic
        prokaryotes and the diseases they cause.
   2. Taxonomy and systematics of phytopathogenic prokaryotes.
   3. Taxonomy and systematics of phytopathogenic prokaryotes (cont.)
   4. Leaf spot diseases caused by Pseudomonas and Xanthomonas characteristics of the
       diseases and the pathogens
   5. Leaf spot diseases: the pathovar system, pathogen detection and disease management
   6. Wilt and rot diseases caused by Pseudomonas, Xanthomonas and Erwinia: characteristics
       of the diseases and the pathogens
   7. Wilt diseases: mechanisms of pathogenicity. New approaches for disease control
   8. Bacterial biofilm and quorum sensing
   9. Biology, epidemiology and control of Agrobacterium spp.
   10. Molecular basis of crown gall pathogenesis
   11. Wall-less, fastidious prokaryotes: Candidatus Phytoplasma and Spiroplasma biological
       properties, epidemiology and control
   12. Walled, fastidious prokaryotes (Xylella, Clavibacter and Candidatus Liberobacter),
       emerging diseases, biology, epidemiology and control
   13. Overview of genomic analyses of plant pathogenic bacteria
   14. Prokaryote genes involved in plant pathogenesis; avr, hrp, etc.
   15. Prokaryote genes involved in plant pathogenesis

Spring Quarter: 2 modules, each 5 weeks

PLP 202C. Advanced Plant Pathology: Virology. 2 units, Three 1 hour lectures, one 1 hour
discussion per week

   1. Some history, the virus concept, what viruses do.
   2. Some virus taxonomy-classification.
   3. TMV
   4. TMV/BMV
   5. BMV/CMV, Sindbis lineage
   6. Potyvirus genome organization Picornavirus lineage
   7. Potyvirus aphid transmission and biology
   8. Luteoviruses levi-like lineage
   9. Luetovirus aphid transmission and biology
   10. Geminiviruses
   11. Caulimoviruses
   12. Rhabdovirus plant-animal viruses
   13. Tospoviruses, new vir uses
   14. Satellite viruses/RNAs and viroids
   15. Viruses and biotechnology.

PLP 202D. Advanced Plant Pathology: Mycology. 2 units, Three 1 hour lectures, one 1 hour
discussion per week

   1. Introduction to fungi – fungi as modular organisms
   2. Fungal systematics – key groups of fungal pathogens and how they are grouped in a
        modern sense
   3. Fungal identification - morphology to molecular approaches
   4. Species concepts: morphological, biological, phylogenetic
   5. Species concepts (continued)
   6. Sexual compatibility
   7. Somatic compatibility
   8. Fungal growth
   9. Fungal morphogenesis
   10. Fungal biology- spores, dormancy and spore dispersal
   11. Fungal nutrition and metabolism
   12. Genetic manipulation of fungi
   13. Genomic analyses of plant pathogenic fungi
   14. Fungal population biology in the field
   15. Fungal population biology in the field

Fall Quarter (Year 2): 2 modules, each 5 weeks

PLP 202E Advanced Plant Pathology: Host-Parasite Interaction:. 2 units, Three 1 hour
lectures, one 1 hour discussion per week

   1.  History and introduction to types of interactions.
   2.  Pathogenicity and virulence: Life on the surface
   3.  Pathogenicity and virulence: Breaching the cell wall
   4.  Pathogenicity and virulence: Biochemical and physiological weapons: Hormones,
       enzymes and toxins
   5. Pathogenicity and virulence: Pathogen effectors and effector delivery systems
   6. Host defenses: Biochemical – preformed and induced cell wall defenses.
   7. Host defenses: Biochemical – preformed and induced metabolites and enzymes
   8. Host defenses: Biochemical – Local and Systemic responses
   9. Host responses: Pathogen recognition – Innate immunity and MAMPs
   10. Host responses: pathogen recognition – NBS-LRR genes and effector triggered
   11. Evolution of host-pathogen specificities: Host R genes/Pathogen Effectors
   12. Technical approaches used to study the interaction between host and pathogen Genomic,
       proteomic, microarrays

PLP 202F. Advanced Plant Pathology: Disease Control. 2 units, Three 1 hour lectures, one 1
hour discussion per week

   1. Underlying epidemiological principles in disease management
   2. Underlying epidemiological principles in disease management (cont.)
   3. Six major strategies for disease control: PARTEE
   4. Specific methods for reducing initial disease: exclusion, physical and chemical
   5. Chemical control: historical perspectives; selective toxicity; experimental design
       considerations for laboratory, greenhouse, and field tests of fungicidal action
   6. Chemical control: epidemiology of fungicidal action and formulation issues
   7. Chemical control: selected classes, modes of action and uses, chemistry of systemicity
   8. Managing pathogen resistance to fungicides
   9. Plant activators: theory and reality
   10. Successful disease forecast and risk assessment models
   11. Biologicals in disease control and comparative efficacy with conventionals
   12. Deploying host resistance genes
   13. Examples of GMO-based disease control: societal acceptance and resistance (Papaya
       RSV; coat protein; etc.)
   14. Regulatory biology and disease management: who does it and when do you call them?;
       quarantine and pest exclusion; detection and diagnostic networks
   15. What’s on the horizon – cutting edge technologies and approaches

Fall, concurrent with.202E and F. PLP 220, Plant Pathology Laboratory. 2 units, Two 3
hour laboratory sessions per week
   1. Koch’s postulates. Three different pathogens – one virus and one cellular pathogen – to
        be taken through all appropriate steps. This would include isolation and the use of
        selective media in the case of bacteria and fungi, and identification of the pathogen by
        appropriate means. The relative merits of alternative inoculation methods and disease
        rating scales would also be considered, along with limits on interpretation of the results.
   2. PCR and sequence analysis. This would include a consideration of the theoretical basis
        for PCR, a detailed evaluation of the reaction components and how they influence the
        amplification process. Commonly used variants such as Q-PCR would also be covered.
        Sequence analysis would include an introduction to data base searches and the use of
        software for alignments and phylogenetic analysis.
   3. Experimental design: with an emphasis on issues important to plant pathology.
   4. Microscopy (potential)

Other required Plant Pathology Courses for all students:

Field course: PLP 205 or PLP 206

Seminar requirements will remain the same (as per our current grad student guidelines):

       All MS students must enroll in the Plant Pathology Departmental general seminar (PLP
       290) each quarter unless there is a scheduling conflict with another course.

       In addition, students must enroll in at least one offering of the other special Plant
        Pathology seminars (e.g. PLP 291, PLP 295, NEM 290 etc.) during each year of their
        enrollment in graduate school. It may be possible to satisfy this requirement by enrolling
        in another participatory seminar course offered by another Department; discuss this with
        your Adviser. These special seminars vary in topic and availability and will be announced
        in communications to graduate students one or two quarters in advance of their
        presentation and by publication in the UC Davis Class Schedule and Registration Guide.”

M.S. degree

The core curriculum fills all course requirements = 23 units

However, the existing total unit requirement as stated in our grad student hand book would
remain the same:

        “Plan I. The student must complete at least a total of 30 units of upper division
        undergraduate and graduate courses (includes the plant pathology required courses; 12
        units must be strictly graduate work) and submit and gain approval of a master's thesis.”


In addition to the core curriculum, two additional elective courses would be required. The
following Nematology courses: 201, 203, 204, 205, and 206 would be among the options, as they
are currently.