vader,
yeah but you're pretty much arguing against yourself. nobody said that plant research is unimportant. and yes it's important to not have a dismissive attitude towards certain subjects. but you're absolutely correct, it's lack of interest that lead to this attitude. not everything will interest you in your life. these things you will ignore, allthewhile noting their relevance, but leaving those studies to someone else.
besides, if you've ever taken a class in plant structure and function or in the developmental biology of plants, you'd realize that that's the kind of stuff that we will never have to know about. so it's not so unsettling, i think. tell the botanists at the plant lab to figure all that stuff out, and just send us the plant when they're ready to "part" with it. when it gets to your lab, you'll extract the chemicals you need, and you are done. as far as feeding the world with plants...that may be an area that you'll work in. but that will require you to konw a lot about plant biology. However, if you don't choose to go into that area, i would not find it so unsettling, nor would I call you unprofessional, nor would I worry about your patients if you didn't care about plants.