Selected Recent Publications:

McCloud, ES and Berenbaum, M. 2000. Effects of spring and summer levels of UV-B radiation on the growth and reproduction of a temperate perennial forb. Plant Ecology 146 (1): 61 -66.

McCloud, ES and Berenbaum, M. 1999. Effects of enhanced UV-B radiation on a weedy forb (Plantago lanceolata) and its interactions with a generalist and a specialist herbivore. Entomologia Experimentalis et Applicata 93: 233-247.

McCloud, E. S. and Baldwin, I. T. 1997. Herbivory and caterpillar regurgitants amplify the wound induced increases in jasmonic acid but not nicotine in Nicotiana sylvestris. Planta 203:430-435.

Abstract: Both herbivory and mechanical damage result in increases in the concentration of jasmonic acid, a wound-signal defense molecule, and nicotine in Nicotiana sylvestris. Higher concentrations of jasmonic acid were induced in leaves by caterpillar herbivory than mechanical damage designed to mimic feeding damage. Increased levels of jasmonic acid are associated with elevated levels of induced nicotine. Despite this, herbivory did not induce higher jasmonic acid in roots, nor did it induce higher levels of nicotine than mechanical damage. When regurgitants from Manduca sexta were applied to standardized mechanical wounds, induction of jasmonic acid in leaves was dramatically amplified but niether jasmonic acid in roots, nor whole-plant nicotine levels were comparably increased, a response similar to that induced by caterpillars. The response of of N. sylvestris to herbivory is different from its response to mechanical damage; moreover, caterpillar regurgitants may be partly responsible for this difference.

Ohnmeiss, T. E., McCloud, E. S., and Baldwin, I. T. 1997. Within plant relationships among wounding, jasmonic acid and nicotine: implications for defense in Nicotiana sylvestris. New Phytologist. 137:441.

Baldwin, I. T., Zhang, Z., Diab, N., Ohnmeiss, T. E., McCloud, E. S., Lynds, G. Y., and Schmelz, E. A. 1997. Quantification, correlations and manipulations of wound-induced changes in jasmonic acid and nicotine in Nicotiana sylvestris . Planta 201:397-404.

McCloud, E. S. and Tallamy, D. W., and F. Halaweish. 1995. Squash beetle trenching behavior: Adaptation to induced cucurbitacins or mucilaginous plant sap? Ecol. Ent. 20:51-59.

McCloud, E. S. and Berenbaum, M.. 1994. Stratospheric ozone depletion and plant-insect interactions: Elevated UVB irradiation alters the foliage quality of Citrus jambhiri for Trichoplusia ni. J. Chem. Ecol. 20:525-539.