Soil nutrient patchiness affects nutrient use efficiency, though not photosynthesis and growth of parental glechoma longituba ramets: both patch contrast and direction matter
文献类型：期刊论文
| 作者 | Xiong, Hao-qin1,2,3 |
| 刊名 | Journal of plant ecology
 |
| 出版日期 | 2010-06-01 |
| 卷号 | 3期号:2页码:131-137 |
| 关键词 | Chlorophyll fluorescence Glechoma longituba Growth and allocation Nutrient use strategy Photosynthesis Soil nutrient patchiness |
| ISSN号 | 1752-9921 |
| DOI | 10.1093/jpe/rtq010 |
| 通讯作者 | Xiong, hao-qin(haoqinxiong@yahoo.com.cn) |
| 英文摘要 | Aims most plants are clonal in nature. clonal ramets can share water, nutrients and photosynthate, especially when they experience patchy resources. patch contrast (i.e. a difference in resources among patches) and patch direction (i.e. source sink relations) are among the basic attributes of spatial patchiness. here, i hypothesize that young established ramets in nutrient-rich patches support old ramets in nutrient-poor patches when ramets are subjected to different patch contrasts and patch directions. methods in a greenhouse experiment, old and young ramets of glechoma longituba were grown in four combinations consisting of patch contrast and patch direction. minus patch direction refers to a patch combination in which parent ramets grow in nutrient-rich patches while connected daughter ramets grow in nutrient-poor ones and plus patch direction is the opposite direction. i measured photosynthesis and fluorescence traits, harvested all ramets, took morphological measures, weighed their dry mass and determined their nutrient uptake and use. important findings for parental ramets of g. longituba, patch contrast and patch direction and their interactions had no significant effects on net photosynthetic rate, maximal fluorescence yield, photochemical quenching (quenching refers to any process which decreases the fluorescence intensity of a given substance), non-photochemical quenching, nutrient uptake, biomass and stolon weight ratio. patch direction alone significantly affected root weight ratio. large patch contrast enhanced n use efficiency (nue) and p use efficiency (pue); plus patch direction decreased nue, but increased pue; the patch contrast by patch direction interaction affected pue and k use efficiency (kue). there were significant interactions between patch direction and patch contrast on pue and kue. it is concluded that soil nutrient patchiness may influence nutrient use strategies, but not nutrient uptake, photosynthesis and growth of parent ramets of g. longituba connected to daughter ramets, and that patch contrast and patch direction jointly affect pue and kue. |
| WOS关键词 | ENVIRONMENTAL HETEROGENEITY ; CLONAL HERB ; FRAGARIA-CHILOENSIS ; PHYSIOLOGICAL INTEGRATION ; RECIPROCAL PATCHINESS ; STOLONIFEROUS HERB ; PLANTS ; HEDERACEA ; SCALE ; PLASTICITY |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| WOS类目 | Plant Sciences ; Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000278732500007 |
| 出版者 | OXFORD UNIV PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2410461 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Xiong, Hao-qin |
| 作者单位 | 1.SW Forestry Univ, Dept Environm Sci & Engn, Kunming 650224, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiong, Hao-qin. Soil nutrient patchiness affects nutrient use efficiency, though not photosynthesis and growth of parental glechoma longituba ramets: both patch contrast and direction matter[J]. Journal of plant ecology,2010,3(2):131-137. |
| APA | Xiong, Hao-qin.(2010).Soil nutrient patchiness affects nutrient use efficiency, though not photosynthesis and growth of parental glechoma longituba ramets: both patch contrast and direction matter.Journal of plant ecology,3(2),131-137. |
| MLA | Xiong, Hao-qin."Soil nutrient patchiness affects nutrient use efficiency, though not photosynthesis and growth of parental glechoma longituba ramets: both patch contrast and direction matter".Journal of plant ecology 3.2(2010):131-137. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
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。