COURSE TITLE Biology 323; Physiology and Anatomy of Plants: Growth Regulation
PROFESSOR(S) Amy Frary, afrary@mtholyoke.edu
LECTURE TuTh, 75 mins
LAB 3 Hour Lab Required
TEXTS

Taiz, L. and Zeiger, E. 1998. Plant Physiology. 2nd ed., Sinauer Associates Inc

(Also Useful) Raven, PH, Evert, RF, and Eichhorn, SE. 1998. Biology of Plants. 6th ed., Worth Publishers Inc.

EXAMS & GRADING
Requirement
Point Value
Exams (2 @ 100 each)
200
Lab Write-ups (10 @ 10 each)
100
Research Proposal & Presentation
25
Written Research Report
50
Final Exam
150
Total Points Available
525

 

COURSE POLICIES
Exams: There will be two mid-term exams held during regular class time on October 4 and November 8. The final exam will be taken during the exam period and will mostly cover material from the last unit with a few cumulative questions from lecture and lab.

Labs: Some of the experiments done in lab will extend over several weeks and require you to make periodic observations and measurements. Your findings from each experiment will be written up in an abbreviated form in which you present your results and discuss their significance. Thus, your lab write-ups should essentially be equivalent to what you would write in a combined results and discussion section in a formal lab report. Because of the open-ended nature of the experiments, there will be no specific due dates for the lab assignments, but you must turn them all in by the last day of classes.

Research Projects: You will choose 2 recent articles (1994 to the present) describing experiments on some aspect of plant growth. You will use these articles as the basis for developing your own research project during the last 3 weeks of the semester. Obviously work on trees or an exotic species wouldn't be suitable, but research on seeds or seedlings of common crop plants such a corn, oats, bean, tomato, etc. would be. Projects which require more than 3 weeks of growth to see results are probably too lengthy to attempt as are projects that involve instruments we don't have. We will have available the common growth regulators, chemicals and greenhouse space. The project you design could be trying the same research on a different plant or introducing a variation in the experiment. It doesn't have to be elaborate! After selecting the papers, copy them and write a brief proposal describing what the researchers did and what you plan to do. You will turn in the articles and your proposal on November 1. On November 20 you will present a ~10 minute talk on your research proposal in lab. On December 13, you will turn in a formal lab report discussing your research findings.

The following journals specialize in studies on plants and are available in the Williston Library: Annals of Botany, American Journal of Botany, Canadian Journal of Botany, The Plant Cell, Physiologica Plantarum, Planta, Plant Physiology, International Journal of Plant Science. Morrill Library at UMass offers an even wider selection of plant biology journals.

LECTURE SCHEDULE
Major Topics
Plant structure & growth
- body plan
- apical meristems
- secondary growth
Plant cells & tissues
Root apical meristem
Shoot apical meristem
Endogenous controls of development: plant hormones
- auxins
- cytokinins
- gibberellins
- abscisic acid
- ethylene
- others
Tissue culture & biotechnology
Environmental controls of development
- phytochrome
- blue-light responses
- tropisms
- circadian rhythms
Flowering
- photoperiodism
- vernalization
- hormonal control
LAB SCHEDULE
Lecture
Topic
1 Plant Propagation
2 Anatomy of the Root and Stem
3 Scanning Electron Microscopy and Apical Meristems
4
Scanning Electron Microscopy (poster = 20 pts.)
5 Hormonal Controls of Growth (2 write-ups = 20 pts.)
6 Tissue Culture (2 write-ups = 20 pts.)
7 Light Controls of Growth (1 write-up = 10 pts.)
8 Tropic Responses of Roots & Shoots (2 write-ups = 20 pts.)
9 Bioassays (1 write-up = 10 pts.)
10 Presentation of Research Proposals

11 No Lab
12 Research Projects
Last Modified: March 11, 2005

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