Arid
DOI10.1007/s00049-006-0340-1
Patterns of chemical defences in plants: an analysis of the vascular flora of Chile
Bustamante, Ramiro O.; Chacon, Paulina; Niemeyer, Hermann M.
通讯作者Niemeyer, Hermann M.
来源期刊CHEMOECOLOGY
ISSN0937-7409
EISSN1423-0445
出版年2006
卷号16期号:3页码:145-151
英文摘要

The plant apparency hypothesis predicts that apparent plants invest in broadly effective defences such as tannins while unapparent plants invest in specific toxins such as alkaloids. The stress hypothesis states that plants invest in cheaper defences if they have evolved in habitats that impose abiotic limitations to plant fitness. We tested these hypotheses by determining the concentrations of alkaloids and tannins in a representative sample of the vascular plants of continental Chile (with exclusion of Pteridophyta, Cactaceae, and Poaceae) consisting of 396 species. In a subsample of 166 species which contained both alkaloids and tannins, we constructed the A/T index (A/T = [alkaloids]/[tannins]). We discarded the presumed effect of phylogeny (as estimated by taxonomy) on the variation observed in the data because no correlation of A/T with taxonomic relationships among species either at family or genus levels was found in a nested ANOVA with genera nested in families. Concentration of alkaloids was negatively correlated with that of tannins. We compared the value of A/T among species differing in life form (herbs, shrubs or trees), herb longevity (annual or perennial), leaf-shedding manner of woody plants (deciduous or evergreen), latitudinal range, and level of water stress typical in their natural habitat. Unapparent plants (herbs, annual) exhibited higher mean A/T index than apparent plants (shrubs and trees, perennial). A/T did not correlate with latitudinal range. Mean A/T values decreased from deserts to deciduous forests. The comparisons were not always significant due to the inevitable unbalance of the data set which lowers the power of the statistical tests employed. The results suggest that chemical defences are indeed distributed in a non-random manner among plants, and that to a large extent the predictions derived from the apparency and stress hypotheses are sustained.


英文关键词herbivory chemical defences stress plant apparency co-evolution native flora of Chile alkaloid quantification
类型Article
语种英语
国家Chile
收录类别SCI-E
WOS记录号WOS:000239754300003
WOS关键词PROTEIN PRECIPITATION ; MEASURING TANNINS ; DEFINING TANNINS
WOS类目Biochemistry & Molecular Biology ; Ecology
WOS研究方向Biochemistry & Molecular Biology ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/151032
作者单位(1)Univ Chile, Fac Ciencias, Dept Ciencias Ecol, Santiago, Chile
推荐引用方式
GB/T 7714
Bustamante, Ramiro O.,Chacon, Paulina,Niemeyer, Hermann M.. Patterns of chemical defences in plants: an analysis of the vascular flora of Chile[J],2006,16(3):145-151.
APA Bustamante, Ramiro O.,Chacon, Paulina,&Niemeyer, Hermann M..(2006).Patterns of chemical defences in plants: an analysis of the vascular flora of Chile.CHEMOECOLOGY,16(3),145-151.
MLA Bustamante, Ramiro O.,et al."Patterns of chemical defences in plants: an analysis of the vascular flora of Chile".CHEMOECOLOGY 16.3(2006):145-151.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Bustamante, Ramiro O.]的文章
[Chacon, Paulina]的文章
[Niemeyer, Hermann M.]的文章
百度学术
百度学术中相似的文章
[Bustamante, Ramiro O.]的文章
[Chacon, Paulina]的文章
[Niemeyer, Hermann M.]的文章
必应学术
必应学术中相似的文章
[Bustamante, Ramiro O.]的文章
[Chacon, Paulina]的文章
[Niemeyer, Hermann M.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。