Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11104-009-0218-4 |
Phenotypic plasticity of the coarse root system of Prosopis flexuosa, a phreatophyte tree, in the Monte Desert (Argentina) | |
Guevara, Aranzazu1; Valeria Giordano, Carla1; Aranibar, Julieta2,4; Quiroga, Marcelo2; Villagra, Pablo E.2,3 | |
通讯作者 | Valeria Giordano, Carla |
来源期刊 | PLANT AND SOIL
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ISSN | 0032-079X |
EISSN | 1573-5036 |
出版年 | 2010 |
卷号 | 330期号:1-2页码:447-464 |
英文摘要 | Prosopis flexuosa trees in the Monte Desert grow in dune and inter-dune valleys, where the water table is located at 6-14 m depth. We asked whether trees in the dunes, which are less likely to access the water table, present a coarse surface root architecture that might favor the exploration / exploitation of dune resources, compensating for water table inaccessibility. We characterized the architecture of surface roots of valley and dune trees, together with the soil environment. The dune held 50 % less and deeper gravimetric soil water (along a 4 m profile), 3-times less organic matter, 2-times less available phosphorous, and a sharper contrast of ammonium and nitrate concentration between plant canopies and uncovered soil than the valley. Coarse surface roots of dune trees were highly branched and grew tortuously at 0.56 +/- 0.16 m depth before sinking downward near the tree crown, suggesting an intensive exploitation of the ephemeral, deep, and canopy-linked resources. In contrast, trees from the valley spread their profuse and less branched surface roots mainly horizontally at 0.26 +/- 0.08 m depth, several meters outside the crown probably exploring this resource-rich site. A model for the environmental control of root architecture together with potential ecological effects is discussed. |
英文关键词 | Water table Root architecture Root topology Dunes Nutrient patches |
类型 | Article |
语种 | 英语 |
国家 | Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000276234200037 |
WOS关键词 | ARCHITECTURAL ANALYSIS ; ARTEMISIA-TRIDENTATA ; SEMIARID ECOSYSTEMS ; SOIL FERTILITY ; LATERAL ROOTS ; WATER-USE ; PLANT ; ARABIDOPSIS ; MESQUITE ; NITRATE |
WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
WOS研究方向 | Agriculture ; Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165990 |
作者单位 | 1.Consejo Nacl Invest Cient & Tecn, CCT Mendoza, IADIZA, RA-5500 Mendoza, Argentina; 2.Consejo Nacl Invest Cient & Tecn, CCT Mendoza, Inst Argentino Invest Nivol Glaciol & Ciencias Am, RA-5500 Mendoza, Argentina; 3.Univ Nacl Cuyo, Fac Ciencias Agr, RA-5505 Mendoza, Argentina; 4.Univ Nacl Cuyo, Inst Ciencias Basicas, RA-5500 Mendoza, Argentina |
推荐引用方式 GB/T 7714 | Guevara, Aranzazu,Valeria Giordano, Carla,Aranibar, Julieta,et al. Phenotypic plasticity of the coarse root system of Prosopis flexuosa, a phreatophyte tree, in the Monte Desert (Argentina)[J],2010,330(1-2):447-464. |
APA | Guevara, Aranzazu,Valeria Giordano, Carla,Aranibar, Julieta,Quiroga, Marcelo,&Villagra, Pablo E..(2010).Phenotypic plasticity of the coarse root system of Prosopis flexuosa, a phreatophyte tree, in the Monte Desert (Argentina).PLANT AND SOIL,330(1-2),447-464. |
MLA | Guevara, Aranzazu,et al."Phenotypic plasticity of the coarse root system of Prosopis flexuosa, a phreatophyte tree, in the Monte Desert (Argentina)".PLANT AND SOIL 330.1-2(2010):447-464. |
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