Endogenous gibberellins in clover broomrape, a parasitic plant, and its host, clover: dependency of the parasite on the host for gibberellin production.
1994
Suzuki Y. | Zhang Y.H. | Murofushi N. | Takeuchi Y.
Endogenous gibberellins were analyzed from a parasitic plant, clover broomrape (Orobanche minor Smith), and its host, clover (Trifolium repens L.). Members of both the early-13- and the early-non-hydroxylation pathways were identified from both the parasite and the host (GA12, GA24, GA9, GA4, GA44, GA19, GA20, and GA1 from clover broomrape; GA9, GA4, GA44, GA19, GA20, and GA1 from clover). Quantitative analyses showed that GA44 was present at high levels in both host and parasite. The similarity in the gibberellins suggests the possibility that the major gibberellins in clover broomrape are transported from clover. However, gibberellins such as GA58, GA38, and notably GA47, which was identified from a plant for the first time, were detected only from clover broomrape, suggesting that the parasite may have the ability to produce at least those gibberellins.
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