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Thread: Increased anthrocyanin expression - temperature

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    Carnivorous plant enthusiast vraev's Avatar
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    Post Increased anthocyanin expression - temperature

    Hi guys,

    Did anyone notice that as the temperatures grow colder, the color of the plants seems to get better? I noticed that in all 3 of the heli species I own. I also noticed it in a couple of neps that were light green before which are now becoming red.

    I was just curious if others noticed this as well. My hypothesis was that the increased temperature increases the "nutrient uptake rate" within plants. Plants are readily able to utilize all the available light (Hence, the higher growth rate during the warmer periods of the year). However, as temperature goes down, the plant is unable to utilize the same quantity of nutrients as enzymes become less efficient at lower temperatures. Hence, in order to protect their internal organelles from excessive oxidative radicals that are produced during various biochemical reactions, it is upregulating anthrocyanin expression to reduce intake of lower wavelengths of the light spectrum which is increasing the red coloration in them. Definitely a connection as plants generally require some red light for growth and now red light is being reflected away.

    What do you guys think?

    Varun
    Last edited by vraev; 11-15-2010 at 04:36 PM.

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    Tastes like chicken! Exo's Avatar
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    Noticed it in my ceph....there really is a connection.
    Some days it just isn't worth chewing thru the restraints.

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    Hello, I must be going... Not a Number's Avatar
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    Either that or as the days get shorter and the daylight color temperatures shift towards red the leaves are absorbing more of the blue spectra to compensate.
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    Carnivorous plant enthusiast vraev's Avatar
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    hmmm....interesting idea...but I don't know if there is an increase in the intensity of the longer wavelengths as days get shorter.

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    RL7836's Avatar
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    I've definitely noticed this with both VFTs & Cephs. Interestingly, back in Oct, Andreas Fleischmann posted an explanation for this phenomenon (4th post).
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    Carnivorous plant enthusiast vraev's Avatar
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    ****! lol! I have been beaten to it. lol!! Thought my hypothesis was novel with this observation that was made by other people as well. ALthough I guess my explanation about oxidative radicals seems unique.

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    Sarracenia Collector Adam's Avatar
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    This happened with my sarrs.
    But my bog garden is super sunny in the fall, and has about 60% light in the summer. I thought that this could be causing that, too.
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