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Tougher Plants

Beating Stress by Protecting Photosynthesis in Genetically Modified Plants


Author(s)

http://sciencecases.lib.buffalo.edu/collection/detail.html?case_id=658&id=658
Robin Pals-Rylaarsdam
College of Arts and Sciences
Saint Xavier University
rylaarsdam@sxu.edu
Monica L. Tischler
Department of Biological Science
Bendectine University
mtischler@ben.edu

Abstract

This "clicker case" follows two recent college graduates as they look for scientific answers to explain why the plants on their new tomato farm are not doing well. Working with their agricultural extension agent, they explore the scientific literature and learn how cold, heat, and salt can stress plants. They also learn that plants genetically engineered to produce glycine betaine, a modified amino acid, can withstand the environmental conditions that stress many agricultural plants. In their explorations, the fledgling farmers read graphs from the primary literature and review photosynthetic processes from their introductory biology course. The case consists of a PowerPoint presentation with embedded multiple-choice questions that students answer using clickers.  Developed for a first-year class in biology, it could be used in any lower-level college biology class or potentially an advanced biology class in high school. The case is also accompanied by an optional PowerPoint presentation (see "Supplemental Materials" tab above).


Objectives

  • Introduce primary sources of biological information.
  • Begin to read and interpret basic graphs.
  • Connect the primary literature to basic biology processes.
  • Reinforce the steps of photosynthesis, particularly the light-dependent reactions.

Keywords

Genetic engineering; genetically modified organism: GMO; chemiosmosis; photosynthesis; photosytem II; proton motive force; transmembrane protein; thylakoid; glycine betaine ; graph reading; data analysis

Educational Level

High school, Undergraduate lower division

Format

PDF, PowerPoint

Type Methods

Clicker, Interrupted, Journal Article

Language

English

Subject Headings

Biology (General) Biotechnology Botany / Plant Science Agriculture


Date Posted

10/23/2012

Teaching Notes

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Teaching notes are intended to help teachers select and adopt a case. They typically include a summary of the case, teaching objectives, information about the intended audience, details about how the case may be taught, and a list of references and resources.

Supplemental Materials

An optional PowerPoint presentation with the graphs from the cases as well as clicker questions corresponding to the questions in the case is included in Supplemental Materials for instructors who would like to teach the case using these technologies.


  tougher_plants.pptx

Answer Key

Answer keys for the cases in our collection are password-protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, begin the process by registering.

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