Arid
The effects of apical meristem damage on growth and defences of two Acacia species in the Negev Desert
Ward, David
通讯作者Ward, David
来源期刊EVOLUTIONARY ECOLOGY RESEARCH
ISSN1522-0613
EISSN1937-3791
出版年2010
卷号12期号:5页码:589-602
英文摘要

Question: Does removal of the apical meristem result in compensatory responses or overcompensation?


Hypotheses: There will be increased investment in axillary meristems and lateral branches and reduced investment in defences. There will be trade-offs between investment in different types of defence and trade-offs between defence and growth.


Organisms: Young Acacia gerrardii and A. raddiana trees.


Field site: Greenhouse, Blaustein Desert Research Institutes, Negev Desert, Israel.


Methods: The treatments were: (I) a control (no removal of either the apical meristem or biomass); (2) removal of the apical meristem only; (3) removal of 75% of the biomass of the plant including removal of the apical meristem; and (4) removal of 75% of the biomass of the plant excluding removal of the apical meristem.


Conclusions: There was no sign of overcompensation or compensatory responses in the experimentally manipulated plants. Plants with the apical meristem removed did not produce more lateral branches. Protecting the apical meristem appeared to be important, although this was only apparent when 75% of the biomass was also removed. There were trade-offs between chemical defences (condensed tannins) and mechanical defences (mean number of thorns) in A. gerrardii but not in A. raddiana. There were also trade-offs between defence and growth in A. gerrardii. I detected several positive correlations between mechanical defences and growth parameters in both species, indicating that mechanical defences may be part of a suite of growth-related traits.


英文关键词anti-herbivore defence compensatory responses overcompensation plant-animal interactions resource availability hypothesis secondary metabolites tolerance trade-offs
类型Article
语种英语
国家Israel
收录类别SCI-E
WOS记录号WOS:000283890800002
WOS关键词SOUTH-AFRICAN SAVANNA ; PLANT ANTIHERBIVORE DEFENSE ; LARGE MAMMALIAN HERBIVORES ; WOODY-PLANTS ; RESOURCE AVAILABILITY ; BROWSING RUMINANTS ; BUD DORMANCY ; GENTIANELLA-CAMPESTRIS ; MECHANICAL DEFENSE ; JUVENILE ACACIA
WOS类目Ecology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/164124
作者单位Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Mitrani Dept Desert Ecol, IL-84993 Sede Boqer, Israel
推荐引用方式
GB/T 7714
Ward, David. The effects of apical meristem damage on growth and defences of two Acacia species in the Negev Desert[J]. Ben-Gurion University of the Negev,2010,12(5):589-602.
APA Ward, David.(2010).The effects of apical meristem damage on growth and defences of two Acacia species in the Negev Desert.EVOLUTIONARY ECOLOGY RESEARCH,12(5),589-602.
MLA Ward, David."The effects of apical meristem damage on growth and defences of two Acacia species in the Negev Desert".EVOLUTIONARY ECOLOGY RESEARCH 12.5(2010):589-602.
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
[Ward, David]的文章
百度学术
百度学术中相似的文章
[Ward, David]的文章
必应学术
必应学术中相似的文章
[Ward, David]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。