Established School Of Nutritional Sciences at HUJI
First woman dean at HUJI
Studied operating mechanism of protease inhibitors, which prevent viral replication.
Discovered the β-Lipotropin hormone, which is metabolized into endorphins that affect mood and behavior

 

Israel Prize 1984. Studied the influence of chemical treatment on the feeding value of agricultural by-products and on the composition of structural carbohydrates contained in these feedstuffs. The influence of the concentrate: roughage ratio of the diets for high-producing dairy cows on feed efficiency and digestibility of the diets. Feed utilization in high-producing milk cows.

 Wahl started to teach at The Hebrew University of Jerusalem's Faculty of Agriculture in Rehovot, where he developed Plant Pathology as one of the important disciplines. He later moved to Tel Aviv University where he established the Institute for Cereal Crops Improvement. He looked at  host-pathogen interaction in its wider ecological concept, including the weed progenitors of the cultivated crop species.  Wahl's research on the cultivated and wild progenitors of barley, oats and wheat, and on their pathogens led not only to new sources of resistance but also to a better understanding of the wild ecosystem.  Prof. Wahl and his students found many new sources of disease resistance, which they characterized and made available freely to crop improvement teams worldwide. Wahl was honored with the prestigious Rothschild Prize (1964) and the Harvey Prize (1978), and with the Bruno Kreisky Award for Service to Humanity (Vienna, Austria, 1985). The President of Israel presented him in 1992 with the prestigious Israel Prize in the Life Sciences for his work in pathology and mycology.