Chin J Plan Ecolo ›› 2008, Vol. 32 ›› Issue (6): 1268-1276.doi: 10.3773/j.issn.1005-264x.2008.06.007

• Special feature: Root Ecology • Previous Articles     Next Articles

ANALYSIS OF ROOT ARCHITECTURE AND ROOT ADAPTIVE STRATEGY IN THE TAKLIMAKAN DESERT AREA OF CHINA

YANG Xiao-Lin1, 2,3;ZHANG Xi-Ming1*; LI Yi-Ling 1, 2; LI Shao-Cai3; SUN Hai-Long3   

  1. 1Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;2Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3Sichuan Lizi Eco-Technology Co., Ltd., Chengdu 610031, China
  • Online:2008-11-30 Published:2008-11-30
  • Contact: ZHANG Xi-Ming

Abstract: Aims Root architectural properties can be divided into geometric properties and topological properties. Topological properties are believed to influence the efficiency and costs of resource exploitation in terms of carbon required for root segment construction.
Methods We excavated by shovel the coarse root systems of three natural species of the Taklimakan Desert area (Tamarix taklamakanensis, Calligonum roborovskii and Apocynum venetum) and analyzed aspects of root architecture, including topology, link length, diameter and scaling relations.
Important findings Root distribution was dominated by horizontal roots. Root branching pattern differed by species, with the shrub T. taklamakanensis tending to be dichotomous (qa=0.15, qb=0.09, TI=0.658) and C. roborovskii (qa=0.52, qb=0.38, TI=0.86) and A. venetum (qa=0.43, qb=0.35, TI=0.83) being herringbone-like. The lengths of links were very long for all species, with the shortest being 1.12 m. The different architectural strategies could be explained in terms of cost-benefits relations and efficiency in soil resource exploration and exploitation. We concluded that the differences and similarities of root architecture reflected strategy in exploitation and exploration. We also tested the “pipe-stem” theory, essentially dating back to Leonardo da Vinci, that underlies many models and found that our measurement data conformed with it. The ratio of the sum of root cross-sectional areas after and before bifurcation was constant with change of root diameters, so we proposed that the scaling coefficient is the universal feature of root architecture.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] HE Yu-Tang TU Jin-Xing FU Ting-Dong CHEN Bao-Yuan. Molecular Biology and Evolutionary Models of Self-incompatible Genes in Brassica Genus[J]. Chin Bull Bot, 2003, 20(05): 513 -521 .
[2] YANG Wen;HE Ru-Zhou;CHENG Jian-Ping;GUO Rong-Fa and KUANG Xue-Mei. Analyses of Peroxidase Isozyme in Sugarcane Varieties[J]. Chin Bull Bot, 1998, 15(06): 65 -69 .
[3] Wang Tian-chi and Lin Kan. A Review on The Application of Electrofusion in Plant Cell Engineering[J]. Chin Bull Bot, 1994, 11(03): 19 -24 .
[4] Decheng Xu, Xiaojing Wang. Axillary Bud Propagation and Regeneration from Stem Segment Explants in Calophyllum inophyllum[J]. Chin Bull Bot, 2014, 49(2): 167 -172 .
[5] WANG Wei, LI Qing-Kang, MA Ke-Ping. Establishment and Spatial Distribution of Quercus liaotungensis Koidz. Seedlings in Dongling Mountain[J]. Chin J Plan Ecolo, 2000, 24(5): 595 -600 .
[6] LIU Gui-Hua, ZHOU Jin, LI Wei, GUO You-Hao. Population Restoration of Oryza rufipogon II. Population Dynamics[J]. Chin J Plan Ecolo, 2002, 26(3): 372 -376 .
[7] WANG Xu-Dong, YU Zhen-Wen, WANG Dong. Effect o Potassium on Sucrose Content of Flag Leaves and Starch Accumulation of Kernels in Wheat[J]. Chin J Plan Ecolo, 2003, 27(2): 196 -201 .
[8] YU Shun-Li, JIANG Gao-Ming. The Research Development of Soil Seed Bank and Several Hot Topics[J]. Chin J Plan Ecolo, 2003, 27(4): 552 -560 .
[9] Gao Qiong. The Applicability of GM (1, N) Model to Biological Systems[J]. Chin J Plan Ecolo, 1991, 15(2): 121 -128 .
[10] WANG Hua-Tian, YANG Yang, WANG Yan-Ping, JIANG Yue-Zhong, WANG Zong-Qin. Effects of exogenous phenolic acids on nitrate absorption and utilization of hydroponic cuttings of Populus × euramericana ‘Neva’[J]. Chin J Plan Ecolo, 2011, 35(2): 214 -222 .