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Unfolding Nature Shop: Unfolding Nature: Being in the Implicate Order

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Offlinekadakuda
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Registered: 05/21/04
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MMMMMMMM light!
    #7670431 - 11/23/07 12:54 PM (16 years, 2 months ago)

interesting read.

http://www.nsf.gov/news/news_summ.jsp?cntn_id=110725

Quote:

Most of us take it for granted that plants respond to light by growing, flowering and straining towards the light, and we never wonder just how plants manage to do so. But the ordinary, everyday responses of plants to light are deceptively complex, and much about them has long stumped scientists.

Now, a new study "has significantly advanced our understanding of how plant responses to light are regulated, and perhaps even how such responses evolved," says Michael Mishkind, a program director at the National Science Foundation (NSF). This study, which was funded by NSF, will be published in the November 23, 2007 issue of Science.

By conducting experiments with Arabidopsis--a small flowering plant widely used as a model organism--the researchers discovered that the plant prepares to respond to light while it is still in the dark, even before it is exposed to light. This preparation involves producing a pair of closely related proteins (known as FHY3 and FAR1) that increase production of another pair of closely related proteins (known as FHY1 and FHL) that had been identified in previous studies as critical participants in the plant's light response.

Haiyang Wang, a member of the research team from Boyce Thompson Institute for Plant Research, says that the plant probably stockpiles these proteins needed for light responses in the dark for the same reason that a traveler fills his car's gas tank the night before a morning journey: in order to be able to get going, without delay, at first light.

With a plant so primed in the dark, it detects and responds to light via the following steps:




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The seeds you won't sow are the plants you dont grow.


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Offlinegeedorah Happy Birthday!
CHOPPN SCIM
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Re: MMMMMMMM light! [Re: kadakuda]
    #7670783 - 11/23/07 02:14 PM (16 years, 2 months ago)

The nighttime is the right time!

Very cool study. Thanks for posting this.


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Unfolding Nature Shop: Unfolding Nature: Being in the Implicate Order


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