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| DOI: | 10.1104/pp.19.1.1 |
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| Web URL(s): | http://www.plantphysiol.org/cgi/reprint/19/1/1
Last checked: 11/02/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC438311/?page=1
Last checked: 11/02/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Curtis, Lawrence C. |
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| Author Affiliation: | Connecticut Experiment Station, New Haven, Connecticut |
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| Title: | The exudation of glutamine from lawn grass |
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| Source: | Plant Physiology. Vol. 19, No. 1, January 1944, p. 1-5. |
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| Publishing Information: | Rockville, MD: American Society of Plant Physiologists |
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| # of Pages: | 5 |
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| Keywords: | TIC Keywords: Ammonium sulfate; Excretion; Exudation; Glutamine; Guttation; Lolium perenne; Nitrogen fertilizers; Potassium chloride; Problem diagnosis
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| Abstract/Contents: | Discusses the potential of nutrient solutions high in ammonia to cause an exudation of glutamine from perennial ryegrass. Highlights a specific instance that occurred during April 1942 in Connecticut, stating that "an undetermined amount of a 10-5-5 fertilizer, high in ammonium sulphate and potassium chloride, was applied to a poor uncut area of a lawn and immediately irrigated with a hose...On the day following the fertilizer application, the color of the fertilized area took on a whitish cast which became increasingly more conspicuous for three days. At that time detailed observation showed that a small white deposit was attached to the tip and side of almost every grass blade." Provides a photograph of affected blades of grass, sorrel, and Achillea millefolium. Describes the process by which the deposits were identified, reporting that "the equivalent of 6.7 grams of glutamine per kilo of fresh material were found." Notes that subsequent attempts to reproduce the phenomenon of glutamine exudation had failed, advising that "the delicate balance between [among] the combination of atmospheric conditions, the soil solution as influenced by a suitable nitrogenous fertilizer, and the condition of the plants favorable for the evaporation of the guttation drops are not commonly encountered." Defines "guttation" as "the natural process by which water is excreted by the plant." Suggests that "this phenomenon ['of glutamine formation in plants and its exudation in the guttation water'] is perhaps much more common than has been generally supposed." Provides a table quantifying compounds found on 10 grass blades dissolved in distilled water. Speculates that "most plants apparently do need such a system [of excretion], and that water absorbed by the roots is the most important material that the plant needs to excrete." Concludes with the conjecture that "toxic materials produced by bacteria and fungi in an infected plant might also find their way to the outside of a plant in the same manner." |
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| Language: | English |
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| References: | 6 |
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| Note: | Pictures, b/w
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Curtis, L. C. 1944. The exudation of glutamine from lawn grass. Plant Physiol. 19(1):p. 1-5. |
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| DOI: 10.1104/pp.19.1.1 |
| Web URL(s):
http://www.plantphysiol.org/cgi/reprint/19/1/1
Last checked: 11/02/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC438311/?page=1
Last checked: 11/02/2010
Requires: PDF Reader |
| 
MSU catalog number: b2215281a |
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