Dr. Carol A. Loopstra



Associate Professor


Molecular biology


PhD 1992, Forestry and Genetics (co-majors), North Carolina State University
MS 1984, Forest Science, Oregon State University
BS 1979, Forest Management (Science Option), Oregon State University


(979) 862-2200




Horticulture /Forest Science Building
MS 2138 TAMU
College Station, Texas 77843-2138 USA

Faculty Associations

  • Faculty of Genetics
  • Faculty of Molecular and Environmental Plant Sciences
  • Faculty of Biotechnology


  • GENE / MEPS 411 - Biotechnology for Crop Improvement
  • ESSM 203 - Forest Trees of North America
  • Teaching grant: Henderson, Loopstra, Moore.  The Bastrop Fires: Understanding Sociological and Environmental Impacts. TAMU Integration of Multidisciplinary Research and Creative Activities into the Learning Experience. 2012 – 2015.

Research Areas & Publications

1. Gene Expression and Function during Wood Development                                                                                 

Grant funding                                                                                   

Association Genetics of Natural Genetic Variation and Complex Traits in Pine. 2005 - 2009. NSF Plant Genome.

Wood formation in loblolly pine. 1999-2003. NSF Plant Genome. PI: Ronald Sederoff, NCSU

Arabinogalactan-proteins in xylem development of loblolly pine. 1995-1998. USDA National Research Initiative Competitive Grants Program.

Isolation of a xylem cellulose synthase gene from poplar. 1998. Texas A&M University Faculty Mini-Grant Program

Publications :

Palle SR, Seeve CM, Eckert AJ, Wegrzyn JL, Neale DB, Loopstra CA. (2013) Association of loblolly pine xylem development gene expression with single nucleotide polymorphisms. Tree Physiology (in press).

Palle SR, Seeve CM, Eckert AJ, Cumbie WP, Goldfarb B, and Loopstra CA. (2011) Natural variation in expression of genes involved in xylem development in loblolly pine (Pinus taeda L.). Tree Genetics and Genomes 7: 193-206

Yang SH and Loopstra CA. (2005) Seasonal variation in gene expression for loblolly pines (Pinus taeda L.) from different geographical regions. Tree Physiology 25:1063-1073.

Yang SH, Wang H, Sathyan P, Stasolla C, and Loopstra CA. (2005) Real-time RT-PCR Analysis of Loblolly Pine (Pinus taeda L.) Arabinogalactan-protein and Arabinogalactan-protein-like Genes. Physiologia Plantarum 124: 91-106.

Yang S-H, van Zyl L, No E-G, and Loopstra CA (2004) Microarray analysis of genes preferentially expressed in differentiating xylem of loblolly pine (Pinus taeda). Plant Science 166(5): 1185-1195

Zhang Y, Brown G, Whetten R, Loopstra CA, Neale D, and Sederoff RR. (2002) An arabinogalactan - protein associated with secondary cell wall formation in differentiating xylem of loblolly pine. Plant Molecular Biology. 52: 91-102

No E-G and Loopstra C.A. (2000) Hormonal and developmental regulation of two loblolly pine xylem arabinogalactan - proteins. Physiologia Plantarum - 110 : 524 - 529.

No E-G, Zhou Y, and Loopstra C.A. (2000) Sequences upstream and downstream of two xylem - specific pine genes influence their expression. Plant Science 160 : 77 - 86.

Loopstra C. A., Puryear J.D., and No E-G, (2000) Purification and cloning of an arabinogalactan - protein from xylem of loblolly pine. Planta - 210 : 686 - 689.

Wang H. and C. Loopstra (1998) Cloning and characterization of a cellulose synthase cDNA (Accession No.AF081534) from xylem of hybrid poplar (Populus tremula X Populus alba). (PGR98-179) Plant Physiol. 118: 1101

Loopstra C.A., Mouradov A., Vivian-Smith, T. Glassick, B. Gale, S. Southerton, H. Marshall, and R. Teasdale. (1998) Two Pinus radiata endo-B-1, 4-glucanases are associated with rapidly growing reproductive structures. Plant Physiology 116: 959-967.

Loopstra C.A., and R.R. Sederoff. (1995) Xylem-specific gene expression in loblolly pine. Plant Molecular Biology 27: 277-291.

Loopstra C.A., A.K. Weissinger and R.R. Sederoff (1992) Transient gene expression in differentiating pine wood using microprojectile bombardment. Can. J For. Res. 22 : 993 - 996.

2. Regulation and Function of Genes Induced by Water Deficit Stress
Grant funding :

Drought resistant pines for Texas Forests. 2002 - 2003. Texas Higher Education Coordinating Board Advanced Technology Program.

Influence of water deficit on gene products in Pinus halepensis. 1997-1999. International Arid Lands Consortium V.G. Schiller, C. Loopstra, L. Korol and R. Newton.

Publications :

Genes induced by WDS are differentially expressed in two populations of aleppo pine (Pinus halepensis). 2005. Sathyan P., Newton R.J. and C. Loopstra. Tree Genetics and Genomes.

3. Pine Genomics
Grant funding:

Martin et al. (~54 co-PIs) Southern Conifer Climate Change Cap. 2011 – 2016. USDA AFRI. $

Neale, de Jong, Langley, Loopstra, Main, Mockaitis, Salzberg, Wegrzyn, Yorke. Loblolly Pine Genome Project. 2011 – 2016. USDA AFRI.


Eckert AJ, Wegrzyn JL, Liechty JD, Lee JM, Cumbie WP, Davis JM, Goldfarb B, Loopstra CA, Palle SR, Quesada T, Langley CH, Neale DB. The evolutionary genetics of the genes underlying phenotypic associations for loblolly pine (Pinus taeda, Pinaceae). Submitted.

Kovach AS, Wegrzyn JL, Parra G , Holt C, Bruening GE, Loopstra CA, Hartigan J,  Yandell M, Langley CH, Korf I, Neale DB (2010) The Pinus taeda genome is characterized by diverse and highly diverged repetitive sequences. BMC Genomics 11:420 doi:10.1186/1471-2164-11-420

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