PhD in Plant, Insect and Microbial Sciences

Degree Requirements

To satisfy the course requirements for a doctoral degree, a student must complete:

  • A minimum of 72 credit hours from courses numbered 7000-9000 (this includes dissertation research credit hours - i.e. PLNT_S 9090).
  • 15 credit hours (towards the 72 hour requirement) must be from courses numbered at the 8000 or 9000 level, exclusive of dissertation research, problems or independent study.
  • For the Horticulture Program Area, all Doctoral students will have successfully completed the requirements for a master’s degree before beginning a doctoral program and no more than 30 hours of dissertation research may be counted towards the 72 hr minimum.
  • Two semesters of PLNT_S 9087.
  • Three semesters of PLNT_S 7087.

Teaching Requirement

With the exception of the Entomology Program Area, all students must participate in an approved teaching opportunity or an approved extension program.

Reasonable Rate of Progress

A reasonable rate of progress toward the degree is required. A Ph.D. student must successfully complete the comprehensive exam within 5 years of their first semester of enrollment as a Ph.D. student. In addition, the remaining program for the doctoral degree must be completed within 5 more years after passing the Comprehensive Exam. 

Sample Plan of Study

There are several areas of study within the PhD in Plant, Insect and Microbial Sciences degree.   A student can select training from a wide range of courses and research programs to prepare for a career in research, teaching, industry and extension work.  Note: Areas of Study will not appear on transcripts or diplomas.  Each program area emphasizes a customized approach towards the course of study.  Each student will work with their advisor and graduate committee to develop a course of study best suited to the student's educational and career goals.

Crop, Soil and Pest Management

Core Requirements:
PLNT_S 8010Professionalism and Ethics2
PLNT_S 9087Seminar in Plant Science (must enroll twice)2
PLNT_S 7087Seminar (must enroll three times)3
PLNT_S 9090Dissertation Research1-10 per semester

Entomology

Core Requirements:
PLNT_S 7710Systematic Entomology5
PLNT_S 7820Principles of Insect Physiology4
PLNT_S 8010Professionalism and Ethics2
PLNT_S 9087Seminar in Plant Science (must enroll twice. Only 1 credit will count towards the 15 credit hour at 8000/9000-level requirement.)2
PLNT_S 7087Seminar (must enroll three times)3
PLNT_S 9090Dissertation Research1-10 per semester
PLNT_S 9810Insect Ecology3
Two elective formal Entomology courses

Horticulture

Core Requirements:
PLNT_S 8010Professionalism and Ethics2
PLNT_S 9087Seminar in Plant Science (must enroll twice. Only 1 credit will count towards the 15 credit hour at 8000/9000-level requirement.)2
PLNT_S 7087Seminar (must enroll three times)3
PLNT_S 9090Dissertation Research1-10 per semester

Plant Breeding, Genetics, and Genomics

Core Requirements:
PLNT_S 8010Professionalism and Ethics2
PLNT_S 9087Seminar in Plant Science (must enroll twice. Only 1 credit will count towards the 15 credit hour at 8000/9000-level requirement.)2
PLNT_S 7087Seminar (must enroll three times)3
PLNT_S 9090Dissertation Research1-10 per semester
Electives
Bridging Courses to Expand Your Background in Plant Biology
PLNT_S 7315Crop Physiology3
PLNT_S 7320Molecular Plant Physiology3
PLNT_S 7500Biology and Pathogenesis of Plant-Associated Microbes4
Elective Courses to Fulfill the Requirement for 15 Credit Hours at 8000 or 9000 Level
AN_SCI 8430Introduction to Bioinformatics Programming4
BIO_SC 8300Advanced Plant Genetics3
BIO_SC 8310Fungal Genetics and Biology3
PLNT_S 8330Molecular Breeding3
PLNT_S 8362Introduction to Plant Metabolism2
PLNT_S 8365Introduction to Molecular Cell Biology2
PLNT_S 8650Ecological and Evolutionary Genomics2
PLNT_S 9415Advanced Plant Physiology3
PLNT_S 9440Applied Quantitative and Statistical Genetics3
PLNT_S 9540Genetics of Plant-Microorganism Interaction3
PLNT_S 9810Insect Ecology3

Plant Stress Biology

Core Requirements:
PLNT_S 7315Crop Physiology3
or PLNT_S 7320 Molecular Plant Physiology
PLNT_S 7500Biology and Pathogenesis of Plant-Associated Microbes4 or 2
or PLNT_S 8505 Introduction to Plant Stress Biology
PLNT_S 8010Professionalism and Ethics2
PLNT_S 8530Research with Plant Stress Agents3
PLNT_S 9087Seminar in Plant Science (Must enroll twice. Only 1 credit will count towards 15 credit hour 8000/9000-level requirement)2
PLNT_S 7087Seminar (must enroll three times)3
PLNT_S 9090Dissertation Research1-10 per semeser
PLNT_S 7965Readings in Plant Stress Biology (must take one of two courses each year.)1-9
or PLNT_S 7970 Readings in Molecular Ecology of Herbivory
Elective Courses:
AN_SCI 8430Introduction to Bioinformatics Programming4
BIO_SC 8300Advanced Plant Genetics3
BIOCHM 8434Signaling in Molecular Cell Biology3
INFOINST 8005Applications of Bioinformatics Tools in Biological Research3
BIO_SC 8310Fungal Genetics and Biology3
PLNT_S 8330Molecular Breeding3
PLNT_S 8362Introduction to Plant Metabolism2
PLNT_S 8365Introduction to Molecular Cell Biology2
PLNT_S 9415Advanced Plant Physiology1-3
PLNT_S 9440Applied Quantitative and Statistical Genetics3
PLNT_S 9540Genetics of Plant-Microorganism Interaction3
PLNT_S 9810Insect Ecology3
Additional Entry Level Courses:
PLNT_S 7550Plant Biotechnology4
PLNT_S 7400Plant Anatomy4
STAT 7070Statistical Methods for Research3

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Comprehensive Examination Process

The Comprehensive Examination is a major milestone in the Ph.D. candidate's progress towards completion of the degree requirements. The candidate is expected to clearly demonstrate his/her knowledge and understanding of the principles and concepts of the chosen Graduate Program Area, related biological sciences, and the scientific method. The Comprehensive Exam should be scheduled when the student has essentially completed the required plan of study. The Comprehensive Exam must be completed at least seven months before the final examination (defense). The Comprehensive Exam Committee is the same as the Doctoral Committee.

The Comprehensive Exam requires both written and oral performance by the student to achieve candidacy. The student's advisor will select either Track I or Track II for the format of the exam.  The student arranges the written and oral portion of the Comprehensive Exam with each member of the Committee.

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Dissertation Defense

A dissertation is required of every Ph.D. Candidate in the Division of Plant Sciences. This is to be a substantial scholarly manuscript of original research conducted by the student. The dissertation should reflect the depth of understanding, independent thought, and original work worthy of a Ph.D. 

The Dissertation Defense consists of a research seminar and final examination. It is the student's responsibility to check the Graduate School's graduation deadlines when scheduling the exam. The seminar will be presented by the student for division faculty, staff, students, committee members, and other interested persons. The student may choose to present the seminar as part of the Division Seminar Series. It must summarize the dissertation research conducted by the student during the Doctoral program. The seminar will be followed by the final, oral examination administered by the Doctoral Committee. Although the general protocol followed during the oral examination shall be at the discretion of the Major Advisor, a typical oral examination lasts about 2 hours and is divided between discussion of the dissertation and related, dissertation subject matter. The research seminar should be scheduled the same day (preferably) or during the week preceding the remainder of the final examination. 

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Admissions

Applicants are required to meet two sets of minimum qualifications for admission: the requirements of the PhD in Plant, Insect, and Microbial Sciences and the minimum requirements of the Office of Graduate Studies.  Because requirements vary, you must refer to a degree program's graduate admission page to learn about specific admission criteria, application deadlines, eligibility and application process.  Your application materials will be reviewed by both the Office of Graduate Studies and the degree program to which you've applied before official admission to the University of Missouri.

Financial Aid from the Program

Financial assistance is available to qualified students at both the MS and PhD levels, as either fellowships or research assistantships. Some programs require an extra form or statement from those who wish to be considered for internal assistantships, fellowships or other funding packages. Check the program website or ask the program contact for details.

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