Eastern Michigan University
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Dr. Marianne Laporte

Associate Professor

Marianne Laporte 441 Mark Jefferson Science Complex




B.S. University of Michigan, 1991

M.A. Indiana University, 1994

Ph.D. University of Wisconsin, 1997

Interests and Expertise

My research is dedicated both to understanding inherent plant responses to the environment and to manipulating those responses through genetic engineering. The goals of my lab are to understand the mechanism of stomatal closure in plants and to use this information to engineer plants with improved performance during drought and under irrigation conditions. In order to accomplish these goals, students in my lab are investigating the role of guard-cell organic acid metabolism in stomatal closure. Other students are engineering Arabidopsis plants for decreased stomatal conductance to water vapor by expressing the enzyme NADP-malic enzyme from a guard cell specific promoter. A second area of study in my lab is to identify genes involved in stomatal development using co-expression analysis.


Bassham DC, Laporte M, Marty F, Moriyasu Y, Ohsumi Y, Olsen LJ, Yoshimoto K (2006) Autophagy in Development and Stress Responses of Plants. Autophagy. 2(1): 2-11

Sharkey TD, Laporte MM, Lu Y, Weise S, Weber A (2004) Engineering plants for elevated CO2: A relationship between starch degradation and sugar sensing. Plant Biology 6:280-288

Tarczynski MC, Laporte MM, Shen B (2003) Methods for Modulating Water-Use Efficiency or Productivity in a Plant by Transforming with a DNA Encoding a NADP-Malic Enzyme Operably Linked to a Guard Cell or an Epidermal Cell Promoter. US Patent Number 6,653,535 B1.

Laporte MM, Shen B, Tarczynski MC (2002) Engineering for drought avoidance: Expression of maize NADP-malic enzyme in tobacco. Journal of Experimental Botany 53:699-705

Laporte MM, Galagan JA, Prasch AL, Vanderveer PJ, Hanson DT, Shewmaker CK, Sharkey TD (2000) Promoter strength and tissue specificity effects on growth of tomato plants transformed with maize sucrose-phosphate synthase. Planta 212, 817-822.

Sharkey TD, Laporte MM, Kruger EL (2000) Will increased photosynthetic efficiency lead to increased yield in rice? In J. Sheehy (ed.) The Quest to Reduce Hunger: Redesigning Rice Photosynthesis IRRI Los BaƱos, Philippines and Elsevier Science, Amsterdam pp 73-86.

Singsaas EL, Laporte MM, Shi JZ, Monson RK, Bowling DR, Johnson K, Lerdau M, Jasentuliytana A, Sharkey TD (1999) Kinetics of leaf temperature fluctuation affect isoprene emission from red oak (Quercus rubra) leaves. Tree Physiology 19, 917-924.

Laporte MM, Galagan JA, Shapiro JA, Boersig MR, Shewmaker CK, Sharkey TD (1997) Sucrose-phosphate synthase activity and yield analysis of tomato plants transformed with maize sucrose-phosphate synthase. Planta 203, 253-259.

Laporte MM, Delph LF (1996) Sex-specific physiology and source-sink relations in the dioecious plant Silene latifolia. Oecologia 106:63-72.

Courses Taught

BIO 120 Introductory Biology II

BIO 305 Cell and Molecular Biology

BIO 548 Bioinformatics

The Biology Department is part of the College of Arts & Sciences, 214 Pray-Harrold