Question
Biology Question on Plant Growth Regulators
Gibberellin was first extracted from
A
fungi
B
algae
C
bacteria
D
roots of higher plants
Answer
fungi
Explanation
Solution
Gibberellin is very a important plant hormone which was first of all reported in Japan, where a disease in rice called ?bakane disease? or foolish seedling disease spread, in which rice plants became abnormally long with significant internodal elongation. Sawada reported that this ?bakane disease? is caused by a chemical secreted by the fungus Gibberella fujikuroi and later it was supported by Kurosawa. Yahuta and Sumuki finally isolated and crystallize these chemicals and named them as gibberellic acids or gibberellins (GA).