Distylium factors

Distylium Factors Novel Plant Growth Regulators in Fresh Leaves of Distylium racemosum Sieb. et Zucc. 

Biological activities of Distylium factors were investigated using several known bioassays for plant hormones. Distylium factors B and Ai were found to exhibit much higher activity than IAA in the LJT that is, the same inclinations of lamina joint sections were observed when the factors were applied at concentrations of one hundredth and one thirtieth, respectively. These factors also displayed stronger elongation than IAA in the... 

As mentioned above, the research into Distylium factors has provided the following significant information. 

In relation to Distylium factors research in Distylium racemosum leaves, Prof. Munakata has further studied the provisionally named " Corn factor " from corn germ oil 4). He has examined many plant oils in an effort to obtain a better source of novel plant growth regulators, including coconut oil, corn germ oil, cotton seed oil, linseed oil, olive oil, peanut oil, poppy oil, rape oil, sesame oil, soya oil, and turpentine oil, and found that corn germ oil showed a most remarkable activity in the LJT. Based... 

After brassinosteroids were identified in Chinese cabbage shoots( 20,22), followed by green tea leaves(2 ,20), we tried to identify Distylium factors A and B in the fresh healthy leaves of Distylium racemosum, which were again collected in the suburbs of Anjo city in 1982. (See Figure 1.)... 

The beginning of brassinosteroid research in Japan was initiated with Distylium factor research. Distylium factors were discovered in Distylium racemosum leaves, when bioassayed, using... 

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