New Brunswick, New Jersey
July 2, 2002

Senesco Technologies, Inc. (AMEX:SNT) announced today that it has signed a Development and Option Agreement with ArborGen, LLC which will enable the two companies to incorporate Senesco's technology into the enhanced forestry products being developed by ArborGen. The financial terms of the agreement were undisclosed.

Bruce Galton, President and CEO of Senesco, stated, "ArborGen is an ideal co-development partner in the forestry field due to their ability to incorporate our technology into their preexisting development programs. We believe that Senesco's technology coupled with ArborGen's extensive knowledge will yield products that are superior to any presently on the market. This agreement stands to greatly enhance both parties' positions in the forestry products industry."

"The Senesco technology is an ideal fit for our research and development portfolio," stated Maud Hinchee, Chief Technology Officer of ArborGen. "ArborGen and Senesco are well-positioned to apply technology that has the potential to significantly impact forest productivity."

ArborGen brings together more than 20 years of forest biotech research with the goal of improving trees for both environmental and productivity gains. ArborGen seeks partnerships with independent laboratories, universities and other companies to bring technological advances in forestry biotechnology to the world's tree growers. ArborGen's research is focused on tree species that represent many of the seedlings now planted by the forest industry around the world, including eucalyptus and poplar species, Radiata and loblolly pine. These improved trees are expected to enable forest landowners to meet the growing demand for paper and wood products while strengthening their ability to manage forestlands in a sustainable and eco-efficient manner for the benefit of future generations. Increasing the productivity of tree plantations safely and sustainably will help meet the world's wood and fiber needs without increasing pressure on native forests.

Senesco takes its name from the scientific term for the aging of cells: senescence. The Company has developed technology that regulates the onset of cell death. Delaying cell breakdown in plants extends freshness after harvesting, while increasing crop yields, plant size and resistance to environmental stress for flowers, fruits and vegetables. The Company believes that Senesco's technology can be used to develop superior strains of crops by delaying natural plant senescence. Senesco has begun to explore ways to trigger or delay cell death in mammals (apoptosis) to determine if the technology is applicable in human medicine. Senesco partners with leading-edge companies and earns research and development fees for applying its gene-regulating platform technology to enhance its partner's products. Senesco is headquartered in New Brunswick, New Jersey, and has research laboratories at the University of Waterloo in Ontario, Canada.