文献类型：期刊文献

英文题名：Abscisic Acid in Soil Facilitates Community Succession in Three Forests in China

作者：Zhao, Houben[2,3] Peng, Shaolin[1] Chen, Zhuoquan[2,4] Wu, Zhongmin[3] Zhou, Guangyi[3] Wang, Xu[3] Qiu, Zhijun[3]

第一作者：Zhao, Houben;赵厚本

通信作者：Peng, SL[1]

机构：[1]Sun Yat Sen Univ, Inst Ecol & Evolut, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China;[2]Chinese Acad Sci, S China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China;[3]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[4]Guangzhou Environm Protect Bur, Guangzhou 510032, Guangdong, Peoples R China

年份：2011

卷号：37

期号：7

起止页码：785-793

外文期刊名：JOURNAL OF CHEMICAL ECOLOGY

收录：;Scopus(收录号：2-s2.0-79959627802);WOS:【SCI-EXPANDED(收录号:WOS:000292215400015)】；

基金：We thank Guanhua Dai, Quan Chao, and Dingsheng Mo for field assistance; Jinrong Wu, Guimin Hu, and Wentian Wang for laboratory analyses. Xiaoyi Wei and Yanjun Du provided very helpful comments on the manuscript. We also thank Anne Bjorkman at the University of British Columbia for assistance with English language and grammatical editing of the manuscript. This research was funded by National Natural Science Foundation of China (NSFC 30670385; U0633002) and basic science foundation of Research Institute of Tropical Forestry, Chinese Academy of Forestry (RITFYWZX200905; CAFYBB2008004).

语种：英文

外文关键词：ABA concentration; Acceleration; Allelopathy; Bioassay; Community succession; ELISA quantification; Leaf litter; Seed germination; Seed mass; Seedling growth

摘要：Plants release secondary metabolites into the soil that change the chemical environment around them. Exogenous abscisic acid (ABA) is an important allelochemical whose role in successional trajectories has not been examined. We hypothesized that ABA can accumulate in the soil through successional processes and have an influence on forest dynamics. To this end, we investigated the distribution of ABA in forest communities from early to late successional stages and the response of dominant species to the gradient of ABA concentrations in three types of forests from northern to southern China. Concentrations of ABA in the soils of three forest types increased from early to late successional stages. Pioneer species' litters had the lowest ABA content, and their seed germination and seedling early growth were the most sensitive to the inhibitory effect of ABA. Mid- and late-successional species had a much higher ABA content in fallen leaves than pioneer species, and their seed germination and seedling early growth were inhibited by higher concentrations of ABA than pioneers. Late-successional species showed little response to the highest ABA concentration, possibly due to their large seed size. The results suggest that ABA accumulates in the soil as community succession proceeds. Sensitivity to ABA in the early stages, associated with other characteristics, may result in pioneer species losing their advantage in competition with late-successional species in an increasingly high ABA concentration environment, and being replaced by ABA-tolerant, late-successional species.