BIO 311D Lecture Notes - Lecture 19: Gonadotropin, Prolactin, Auxin
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Many hormones are evolutionarily conserved, but their functions and/or target tissues have changed over time. So, similarities in hormones between classes does not necessarily imply similar function. Among the hormones released from the pituitary gland are luteinizing hormone (lh) and follicle stimulating hormone (fsh) which are collectively called gonadotropins. The hypothalamic-pituitary-gonadal (hpg) axis is a good example of negative feedback control. Yes, but many plant biologists prefer the term (cid:321)plant growth regulator. (cid:322) Plants do not have circulating blood to transport hormone-like signaling molecules https://www. evernote. com/home. action#n=78e445e5 ab32 4aa2 8cec e551d7154ab9&b=af083809 5f0c 4fca 9995 7894b8e22bf0&ses=4&sh=1&sds=5& Some signaling molecules that are considered plant hormones act only locally. Some signaling molecules, such as glucose, are present at concentrations thousands of times greater than a typical hormone, but nevertheless cause signal transduction like a hormone. Growth in a plant is usually in the direction of light. Auxins are produced in the shoot tips and transported from cell to cell down the stem at about.
