Water and nitrogen manipulations of the desert shrub Larrea divaricata subsp. tridentata (Zygophyllaceae)

Water supplementation of Larrea divaricata subsp. tridentata bushes growing under natural conditions affected the amount of resin, nordihydroguaiaretic acid (NDGA) and soluble protein present in the leaves. Nitrogen fertilization had no effect on these parameters. The total resin and NDGA content al...

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Bibliographic Details
Published in:Journal of arid environments 1994-10, Vol.28 (2), p.139-146
Main Authors: Gonzalez-Coloma, A., Wisdom, C.S., Sharifi, M.R., Rundel, P.W.
Format: Article
Language:English
Subjects:
herbivory
irrigation
Larrea divaricata subsp. tridentata
nitrogen fertilization
nordihydroguaiaretic acid
resin
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Summary:Water supplementation of Larrea divaricata subsp. tridentata bushes growing under natural conditions affected the amount of resin, nordihydroguaiaretic acid (NDGA) and soluble protein present in the leaves. Nitrogen fertilization had no effect on these parameters. The total resin and NDGA content also varied with the leaf production dates, but the NDGA concentration in the resin was not affected by either the treatment or the time of production. Herbivore activity, measured as a percentage of the leaves eaten, was not affected by these manipulations, varied with season (highest during the summer) and had a negative correlation with the resin content of the plant.
ISSN:0140-1963
1095-922X
DOI:10.1016/S0140-1963(05)80044-8