ISSN:
1573-1561
Keywords:
Plant defense
;
induced defense
;
leaf damage
;
quinolizidine alkaloids
;
nitrogen fixation
;
Lupinus succulentus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract We used N2-fixing and nonfixing lupines to examine the effects of plant nutrition on short-term alkaloid production in damaged leaves. Three different treatments were used: damaged leaves from N2-fixing plants; undamaged leaves from these damaged, N2-fixing plants; and damaged leaves on nitrogen-limited, nonfixing plants. Relative to controls, alkaloids increased in concentration more quickly in the N2-fixing than in the nitrogen-limited plants. The magnitude of this increase in alkaloids was correlated with the initial alkaloid concentration. These results suggest that nitrogen-rich plants may benefit from faster and higher alkaloid induction than nitrogen-limited plants. In addition, the detailed dynamics of individual alkaloids are consistent with earlier proposals for the mechanism of lupine alkaloid induction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01020373
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