Research Interests

Plants are sensitive to small fluctuations in the environment such as alterations in availability of light, water, oxygen, soil salinity, elevated carbon dioxide, air pollutants, wounding, the direction of gravitational force and wind. Some of these changes occur in the aerial (shoot) environment but others occur in the soil (root) environment. While plants do not have a nervous system as do animals, it is nevertheless vital that plants possess rapid and efficient mechanisms for passing messages concerning any environmental perturbation from roots to shoots and from shoots to roots. This is important, because although roots and shoots live in very different environments, they must act in a cooperative fashion.

My interests are described by these questions: - Do plant hormones play a key role as messengers of environmental change? By what mechanisms do changes in the environment alter the synthesis and transport of the hormones ethylene, abscisic acid, gibberellins, auxins, jasmonates and cytokinin? How do these hormonal messages, that move between organs, coordinate growth and development of a whole plant? How is this interorgan communication used to signal that a distant organ is exposed to an adverse and stressful environment?

Other related projects:- (i) hormonal and environmental control of adventitious rooting. (ii) The role of the metabolism of the hormones ethylene, JA, IAA and ABA in growth and development in cultured cells. (iii) The role of plant hormones in phenotypic plasticity.

 

Selected publications

• Qaderi, M.M., Reid, D.M. (2011) Stressed crops emit more methane despite the mitigating effects of elevated carbon dioxide. Functional Plant Biology, 38, 1–9.
• Kurepin, L.V., Walton, L.J., Pharis, R.P., Emery, R.J., Reid, D.M. (2010) Interactions of temperature and light quality on phytohormone-mediated elongation of Helianthus annuus hypocotyls. Plant Growth Regul. Published on line 30 Dec 2010 (DOI 10.1007/s10725-010-9549-7)
•  Kurepin, L.V., Walton,L.J., Yeung, E.C., Chinnappa, C.C., Reid, D.M. (2010) The interaction of light irradiance with ethylene in regulating growth of Helianthus annuus shoot tissue. Pl. Growth Regul. 62: 43-50.
• Qaderi, M.M., Reid D.M. (2009) Methane emissions from six crop species exposed to three components of global climate change: temperature, ultraviolet-B radiation and water stress. Physiol. Plant. In Press.
• Qaderi, M.M., Yeung, E.C., Reid, D.MN. (2008). Growth and physiological responses of an invasive alien species, Silene noctiflora, during two developmental stages to four levels of ultraviolet-B radiation. EcoScience. 15: 150-159.
• Qaderi, M.M., Reid, D.M. (2008) Combined effects of temperature and carbon dioxide on plant growth and subsequent seed germinability of Silene noctiflora. Int J Plant Sci. 169: 1200 - 1209.
• Kurepin, L.V., Walton, L.J., Reid D.M., Chinnappa, C.C., Pharis, R.P. (2007) Photoperiod, light quality, and irradiance effects on flowering in alpine and prairie ecotypes of Stellaria longipes. Can J Bot. 85: 538-544.
• Kurepin, L.V., Shah, S,. Reid, D.M. (2007) Light quality regulation of endogenous levels of auxin, abscisic acid and ethylene production in petioles and leaves of wild type and ACC deaminase transgenic Brassica napus. Plant Growth Regulation. 52: 53-60.
• Kurepin, L.V., Emery, R.J.N., Reid D. M., Pharis, R.P. (2007) Uncoupling light quality from light irradiance effects in Helianthus annuus shoots; putative roles for endogenous gibberelllins, auxin, cytokinins and abscisic acid in leaf and internode growth. J. Expt. Bot . 58: 2145-2157
• Lee-Ho, E, Walton, L.J., Reid, D.M., Yeung, E.C. Kurepin, L.V. (2007) Carbon dioxide and sucrose levels regulate root architecture and anatomy in Arabidopsis thaliana seedlings. Can. J. Bot. 85: 324-330.
• Qaderi M.M., Islam, A., Reid, D.M., Shah, S. (2007) Do transgenic canola (Brassica napus) lines expressing the bacterial enzyme ACC deaminase differ from wild-type in response to UVB radiation? Can J Bot. 85: 148 - 159.
• Kurepin, L.V., Emery, R.J.N., Pharis, R.P. Reid D. M. (2007) The interaction of light quality and irradiance with gibberellins, cytokinins and auxin in regulating growth of Helianthus annuus hypocotyls. Plant Cell & Environonment., 30: 147-155.
• Qaderi M.M., Kurepin L.V., Reid D.M. (2006) Growth and physiological responses of Canola (Brassica napus) to three components of global climate change: temperature, carbon dioxide and drought. Physiol. Plant. 128: 710-721
• Qaderi M.M., Kurepin L.V., Reid D.M. (2006) Growth and physiological responses of Canola (Brassica napus) to three components of global climate change: temperature, carbon dioxide and drought. Physiol. Plant. (In press)
• Walton, L.J., Kurepin, L.V., Reid D.M., Chinnappa, C.C.(2006)
  Stem and leaf growth of alpine sun and prairie shade ecotypes of Stellaria longipes under different photoperiods: role of ethylene. Can. J. Bot. 2006 (In press).
• Kurepin, L.V., Mancell, L., Reid, D.M., Pharis, R.P., Chinnappa, C.C. (2006) Possible roles for ethylene and gibberellins in the phenotypic plasticity of an alpine population of Stellaria longipes. Can. J. Bot. (In press)
• Srivastava,, S, Emery, R.J., Kurepin L.V., Reid, D.M., Fristensky, B, Kav, N.N.V. (2006) Pea PR10.1 is a ribonuclease and its transgenic expression elevates cytokinin levels. Plant Growth Regulation. 49: 17-25.
• Kurepin, L. V., Pharis R.P., Reid, D.M. Chinnappa. C.C. (2006) Involvement of Gibberellins in the stem elongation of sun and shade ecotypes of Stellaria longipes that is induced by low light irradience. Plant Cell and Environment. I29: 1319-1328.
• Kurepin, L.V., Walton, L.J., Reid, D.M., Pharis, R.P., Chinnappa, C.C. (2006) Growth and ethylene evolution by shade and sun ecotypes of Stellaria longipes in response to varied light quality and irradiance. Plant Cell and Environment. 29: 647-652.
• Qaderi, M. M., Reid, D.M. (2005) Growth and physiological responses of Canola (Brassica napus L.) to UV-B and CO2 under controlled environmental conditions. Physiol. Plant. 125: 247-259.
• Belmonte, M.F ., Donald, G., Reid, D.M., Yeung, E.C., Stasolla, C. (2005) Alterations of the glutathione redox state improve apical meristem structure and somatic embryo quality in white spruce (Picea glauca) J. Exp. Bot. 56: 2355 - 2364.
• Franklin, J.A., Kav N.N.V., Yajima, W., Reid, D.M. (2005) Root temperature and aeration affects protein profile of canola leaves. Crop Science. 45: 1379-1386.
• Graham, C,M., Ehrenshaft, M., Hausner, G., Reid, D.M. (2004) A highly conserved gene for vitamin B6 biosynthesis may have consequences for stress and hormone responses in plants. Physiol. Plant. 121:8-14.
• Alokam, S., Li, Y., Li, W., Chinnappa, C.C., Reid, D.M. (2002) Photoregulation of phenylalaine ammonium-lyase (PAL) and chalcone synthase (CHS) in the accumulation of Stellaria longipes under varies R/FR. Physiol. Plant. 116: 531-538.
• Bray, S., Reid, D.M. (2002) The effect of salinity and CO2 enrichment on the growth and anatomy of the second trifoliate leaf of Phaseolus vulgaris L. Can. J. Bot. 80: 349-359
• Comparot, S.M. Pidgeon, C.M., Reid, D.M. (2002) Methyl jasmonate elicits a differential antioxidant response in light- and dark-grown canola (Brassica napus) roots and shoots. Plant Growth Regul. 38: 21-30.
• Naik, G.R., Mukherjee, I., Reid, D.M. (2002) Influence of cytokinins on the methyl jasmonate-promoted senescence in Helianthus annuus seedlings. Plant Growth Regul. 38: 61-67.