bacterial stress

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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Helix
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bacterial stress

Post by Helix » Thu Sep 06, 2007 12:19 pm

Are bacteria stressed during normal growth on laboratory media (broth or agar)? Could any one kindly suggest some literature?

Thanks a lot!

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canalon
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Post by canalon » Thu Sep 06, 2007 2:25 pm

I have no litterature in mind, but I would say that it probably strongly depends on the medium (rich or minimal? selective or not?...), how long you grow them, in which atmosphere...

There is quite a lot of litterature on stress related to nutrient starvation if you are interested.
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MrMistery
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Post by MrMistery » Thu Sep 06, 2007 6:20 pm

well if the medium contains everything the strain needs, why would it be stressed?
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canalon
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Post by canalon » Fri Sep 07, 2007 2:22 am

Because it gets used after a while? Because of accumulation of byproducts?
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Post by MrMistery » Fri Sep 07, 2007 6:39 am

well yeah, but that would mean that the medium is no longer optimum. As i see it, it's like a function, with quality of medium on the x axis and stress on the y. At the beginning, when the medium can be approximated as constant for a short period of time, can't we say there is no stress? Otherwise, if you wait long enough, stress will always appear.
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Helix
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bacteria and stress

Post by Helix » Fri Sep 07, 2007 1:59 pm

Thank you all so much!
Well, my question was in general about aerobic bacteria. Can they be stressed because of accumulation of byproducts during growth?
I am not particular about the type of stress, but I would like to know if outer membrane perturbation occurs owing to the above mentioned "stress".

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