Re: Nitrate uptake in plants

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Article #4433

#4433

From: Ranjan S Muttiah
Date: Sat, 04 Jan 1992 19:46

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In article <1992Jan4.184720.10739@noose.ecn.purdue.edu> muttiah@stable.ecn.purdue.edu (Ranjan S Muttiah) writes:
>exchange coefficient (which most of the soils don't) i,e., it is highly mobile 
>in soils.  For simplicity one can I guess assume that most of the nitrate 
>entering the plant does so with the water in osmosis at the root/soil interface.

I goofed.   Osmosis is absolutely wrong :).  It should be the hydrostatic
pressure differential (and the associated water potential) that governs the 
flow of water into the xylem.  Osmostic pressure differential does contribute 
toward solute movement in the pholem but that is another matter.

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References: <1992Jan2.182754.29872@mcs.anl.gov> <1992Jan2.175611@spruce.gsfc.nasa.gov> <1992Jan4.184720.10739@noose.ecn.purdue.edu>

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From: muttiah@stable.ecn.purdue.edu (Ranjan S Muttiah)
Newsgroups: sci.bio,bionet.agroforestry,bionet.molbio.plant
Subject: Re: Nitrate uptake in plants
Keywords: nitrate, nitrogen, biouptake, plants
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Date: 4 Jan 92 19:46:37 GMT
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