Immunoassay of plant hormones.

Immunoassay of Hormones

The Nezv York Times (March 25, 1962) pointed out that in the decade from 1950-60 the number of children in elementary schools had increased by fifty per cent. The prospects are for a further increase of fifty per cent during the 60's. The total cost of public education from 1950 to 1960 rose from $7 billion to $17 billion. But this is only one of the future headaches. The imagination is heardly...

Simultaneous enzyme immunoassay of two thyroid hormones.

We describe an enzyme immunoassay in which the two thyroid hormones, triiodothyronine and thyroxin, are measured simultaneously in a single tube. The method involves labeling the two with separate enzymes (beta-galactosidase and alkaline phosphatase, respectively), whose catalyzed reactions can easily be distinguished from each other by absorption spectrophotometry, with o-nitrophenyl-beta-gala...

Plant hormones

Plant hormones have been studied for more than a century because they have been heavily implicated in the control of plant growth and development. For many years, they have been considered to fall into five classes: auxins, cytokinins, gibberellins, abscisic acid and ethylene. More recently, a variety of additional classes such as brassinosteroids have been added and it seems likely that more w...

Microbial Production of Plant Hormones

The Five "Classical" Plant Hormones.

It is 60 years since Went and Thimann (1937) published their classic book Phytohormones. At that time, the term phytohormone was synonymous with auxin, although the existente of other phytohormones, such as cell division factors, was anticipated on the basis of physiological experiments. It is impressive that aside from some confusion about the structure of auxin, many of the basic phenomena of...