Protecting traditional knowledge: in which way?

Traditional knowledge (TK) is the information that people in a given community, based on experience and adaptation to a local culture and environment, have developed over time, and continues to develop. Today TK is being increasingly used in modern researches but without taking formal consent of the TK holders or without sharing any benefit from the use of this knowledge. This practice of misappropriation of TK is tried to be protected by the existing IPR laws. But our experience tells us that the rights of the holders of TK cannot be properly addressed with any single IPR law in existence. Hence the most judicious decision would be to protect the TK with a sui generis legislation.