Dylan Kosma


Photo of Dylan Kosma

Assistant Professor

Department of Biochemistry and Molecular Biology
University of Nevada/Mail Stop 330
1664 North Virginia Street
Reno,  Nevada   89557

Office: (775) 682-7319
Lab: 784-1824

Fax: 784-1419

Email: dkosma@unr.edu
Building: Howard Medical Science,  Office 216
Personal Web: http://www.cabnr.unr.edu/kosma/

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EDUCATION
B.A. Southern Illinois University, 2002
M.S. Southern Illinois University, 2005
Ph.D. Purdue University, 2009

ACADEMIC & RESEARCH INTEREST

The aerial organs of all higher plants are covered with a lipid-rich cuticle that serves to protect plants from their environment. The cuticle is comprised of a lipid polymer, cutin, that is embedded and covered with aliphatic waxes. Suberin is a biosynthetically-related lipid polymer that is found in tree bark, seed coats, the surface of mature roots and surrounding the vasculature of young roots. Suberin production is a ubiquitous response to wounding.  Collectively, cutin and suberin comprise the most abundant, naturally occurring lipid polymers on the planet. It is estimated that leaf cuticles alone represent a surface area twice that of the earth's land surface.

The Kosma lab is focused on understanding the complex plant lipid polymers cutin and suberin. We use a multidisciplinary approach combining biochemistry, analytical techniques and molecular genetics to comprehend the macromolecular structure and functional significance of these polymers with an emphasis on their role in plant tolerance to abiotic stress.

REPRESENTATIVE PUBLICATIONS

Journals
Kosma D.K., Rice A, Pollard M. 2016, Analysis of aliphatic waxes associated with root periderm or exodermis from eleven plant species., Phytochemistry 117: 351–362  
Kosma D.K., Rowland O. 2016, Answering a four decade-old question on epicuticular wax biosynthesis., J Exp Bot 67: 2538–2540  
Delude C., Fouillen L., Bhar P., Cardinal M-J., Pascal S., Santos P., Kosma D.K., Joubès J., Rowland O., Domergue F. 2016, Primary Fatty Alcohols Are Major Components of Suberized Root Tissues of Arabidopsis in the Form of Alkyl Hydroxycinnamates., Plant Physiol 171: 1934–1950  
Kosma, D., Rice, A., Pollard, M. 2015, Analysis of aliphatic waxes associated with root periderm or exodermis from eleven plant species., Phytochemistry, 117, 351-62.  
Jinjie Liu, Henrik Tjellström, Kathleen McGlew, Vincent Shaw, Adam Rice, Jeffrey Simpson, Dylan Kosma, Wei Ma, Weili Yang, Merissa Strawsine, Edgar Cahoon, Timothy P. Durrett, John Ohlrogge 2015, Field production, purification and analysis of high-oleic acetyl-triacylglycerols from transgenic Camelina sativa, Industrial Crops and Products 65: 259-268   View item.
Kosma, D., Molina, I., Rowland, O. 2015, GC-MS-Based Analysis of Chloroform Extracted Suberin-Associated Root Waxes from Arabidopsis and Other Plant Species., Bio-protocol, 5(24), e1679   View item.
Isabel Molina & Dylan K Kosma 2015, Role of HXXXD-motif/BAHD acyltransferases in the biosynthesis of extracellular lipids, Plant Cell Reports DOI 10.1007/s00299-014-1721-5  
Dylan K Kosma, Jhadeswar Murmu, Fakhria M Razeq, Patricia Santos, Richard Bourgault, Isabel Molina, Owen Rowland 2014, AtMYB41 activates ectopic suberin synthesis and assembly in multiple plant species and cell types, The Plant Journal 80 (2): 216–229   View item.
Fakhria M Razeq, Dylan K Kosma, Owen Rowland, Isabel Molina 2014, Extracellular lipids of Camelina sativa: Characterization of chloroform-extractable waxes from aerial and subterranean surfaces, Phytochemistry 106:188-196   View item.
Rachel Miller, Timothy P Durrett, Dylan K Kosma, Todd A Lydic, Bagyalakshmi Muthan, Abraham JK Koo, Yury V Bukhman, Gavin E Reid, Gregg A Howe, John Ohlrogge, Christoph Benning 2013, Altered lipid composition and enhanced nutritional value of Arabidopsis leaves following introduction of an algal diacylglycerol acyltransferase 2, Plant Cell 25(2):677-693  
Vishwanath SJ, Kosma DK, Pulsifer IP, Scandola S, Pascal S, Joub Domergue F, Lessire R, Rowland O, Domergue F 2013, Suberin- fatty alcohols in Arabidopsis thaliana: Distributions in roots and contributions to seed coat barrier properties., Plant Physiology 163:1118-1132.   View item.
Kosma DK, Molina I, Ohlrogge JB, and Pollard M 2012, Identification of an Arabidopsis fatty alcohol: caffeoyl-coenzyme A acyltransferase required for the synthesis of alkyl hydroxycinnamates in root waxes., Plant Physiology 160:237-248.  
Satya Swathi Nadakuduti, Mike Pollard, Dylan K Kosma, Charles Allen, John B Ohlrogge, Cornelius S Barry 2012, Pleiotropic phenotypes of the sticky peel mutant provide new insight into the role of CUTIN DEFICIENT2 in epidermal cell function in tomato, Plant Physiology 159 (3):945-960  
Lü S, Zhao H, Parsons EP, Xu C, Kosma DK, Xu X, Chao D, Lohrey GT, Bangarusamy DK, Wang G, Bressan RA, Jenks MA 2011, The glossyhead1 (gsd1) allele of ACC1 reveals a principal role for multi-domain Acetyl-CoA Carboxylase in the biosynthesis of cuticular waxes by Arabidopsis thaliana., Plant Physiology 157:1079-1092.  
Kosma DK, Nemacheck JA, Jenks MA, Williams CE 2010, Changes in properties of wheat leaf cuticle during interactions with Hessian fly., The Plant Journal 63:31-43.  
DK Kosma, EP Parsons, T Isaacson, S Lü, JKC Rose, MA Jenks 2010, Fruit cuticle lipid composition during development in tomato ripening mutants, Physiologia Plantarum 139 (1): 107-117  
HM Mamrutha, T Mogili, K Jhansi Lakshmi, N Rama, Dylan Kosma, M Udaya Kumar, Matthew A Jenks, Karaba N Nataraja 2010, Leaf cuticular wax amount and crystal morphology regulate post-harvest water loss in mulberry (Morus species), Plant Physiology and Biochemistry 48 (8): 690-696  
Stephen D Ebbs, Dylan K Kosma, Elizabeth H Nielson, Marylou Machingura, Alan JM Baker, Ian E Woodrow 2010, Nitrogen supply and cyanide concentration influence the enrichment of nitrogen from cyanide in wheat (Triticum aestivum L.) and sorghum (Sorghum bicolor L.), Plant, Cell & Environment 33 (7): 1152-1160  
Arabidopsis CER8 encodes LONG-CHAIN ACYL-COA SYNTHETASE 1 (LACS1) that has overlapping functions with LACS2 in plant wax and cutin synthesis 2009, Arabidopsis CER8 encodes LONG-CHAIN ACYL-COA SYNTHETASE 1 (LACS1) that has overlapping functions with LACS2 in plant wax and cutin synthesis, The Plant Journal 59 (4): 553-564  
Tal Isaacson, Dylan K Kosma, Antonio J Matas, Gregory J Buda, Yonghua He, Bingwu Yu, Arika Pravitasari, James D Batteas, Ruth E Stark, Matthew A Jenks, Jocelyn KC Rose 2009, Cutin deficiency in the tomato fruit cuticle consistently affects resistance to microbial infection and biomechanical properties, but not transpirational water loss, The Plant Journal 60 (2): 363-377  
Hyung Gon Mang, Kristin A Laluk, Eugene P Parsons, Dylan K Kosma, Bruce R Cooper, Hyeong Cheol Park, Synan AbuQamar, Claudia Boccongelli, Saori Miyazaki, Federica Consiglio, Gabriele Chilosi, Hans J Bohnert, Ray A Bressan, Tesfaye Mengiste, Matthew A Jenks 2009, The Arabidopsis RESURRECTION1 gene regulates a novel antagonistic interaction in plant defense to biotrophs and necrotrophs, Plant physiology 151 (1): 290-305  
Dylan K Kosma, Brice Bourdenx, Amélie Bernard, Eugene P Parsons, Shiyou Lü, Jérôme Joubès, Matthew A Jenks 2009, The impact of water deficiency on leaf cuticle lipids of Arabidopsis, Plant physiology 151 (4): 1918-1929  
DK Kosma, JA Long, SD Ebbs 2004, Cadmium bioaccumulation in yellow foxtail (Setaria glauca LP Beauv): Impact on seed head morphology, American Journal of Undergraduate Research 3 (1): 9-14  
S Ebbs, J Bushey, S Poston, D Kosma, M Samiotakis, D Dzombak 2003, Transport and metabolism of free cyanide and iron cyanide complexes by willow, Plant, Cell & Environment 26 (9): 1467-1478  
Book or Chapter(s) in Books
Dylan K Kosma, Matthew A Jenks 2007, Eco-physiological and molecular-genetic determinants of plant cuticle function in drought and salt stress tolerance, Advances in Molecular breeding toward drought and salt tolerant crops, 91-120   View item.