Interactive effects of phosphorus deficiency and exogenous auxin on root morphological and physiological traits in white lupin (Lupinus albus L.)

被引:0
作者
TANG HongLiang [1 ,2 ]
SHEN JianBo [1 ]
ZHANG FuSuo [1 ]
RENGEL Zed [3 ]
机构
[1] Centre for Resources, Environment and Food Security, Department of Plant Nutrition, Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University
[2] College of Life Science, Hebei University
[3] Soil Science & Plant Nutrition, School of Earth and Environment, The University of Western Australia
基金
北京市自然科学基金; 中国国家自然科学基金;
关键词
cluster root; carboxylate exudation; proton; auxin; phosphorus deficiency; Lupinus albus;
D O I
暂无
中图分类号
Q945 [植物生理学];
学科分类号
0903 ;
摘要
White lupin (Lupinus albus) exhibits strong root morphological and physiological responses to phosphorus (P) deficiency and auxin treatments, but the interactive effects of P and auxin in regulating root morphological and physiological traits are not fully understood. This study aimed to assess white lupin root traits as influenced by P (0 or 250 μmol L-1 ) and auxin (10-8 μmol L-1 NAA) in nutrient solution. Both P deficiency and auxin treatments significantly altered root morphological traits, as evidenced by reduced taproot length, increased number and density of first-order lateral roots, and enhanced cluster-root formation. Changes in root physiological traits were also observed, i.e., increased proton, citrate, and acid phosphatase exudation. Exogenous auxin enhanced root responses and sensitivity to P deficiency. A significant interplay exists between P and auxin in the regulation of root morphological and physiological traits. Principal component analysis showed that P availability explained 64.8% and auxin addition 21.3% of the total variation in root trait parameters, indicating that P availability is much more important than auxin in modifying root responses of white lupin. This suggests that white lupin can coordinate root morphological and physiological responses to enhance acquisition of P resources, with an optimal trade-off between root morphological and physiological traits regulated by external stimuli such as P availability and auxin.
引用
收藏
页码:313 / 323
页数:11
相关论文
共 31 条
  • [1] Nitric oxide is involved in phosphorus deficiency-induced cluster-root development and citrate exudation in white lupin
    Wang, B. L.
    Tang, X. Y.
    Cheng, L. Y.
    Zhang, A. Z.
    Zhang, W. H.
    Zhang, F. S.
    Liu, J. Q.
    Cao, Y.
    Allan, D. L.
    Vance, C. P.
    Shen, J. B.
    [J]. NEW PHYTOLOGIST, 2010, 187 (04) : 1112 - 1123
  • [2] Localized application of phosphorus and ammonium improves growth of maize seedlings by stimulating root proliferation and rhizosphere acidification[J] . J. Jing,Y. Rui,F. Zhang,Z. Rengel,J. Shen.Field Crops Research . 2010 (2)
  • [3] Nitric oxide mediates humic acids-induced root development and plasma membrane H+-ATPase activation
    Zandonadi, Daniel B.
    Santos, Mirella P.
    Dobbss, Leonardo B.
    Olivares, Fabio L.
    Canellas, Luciano P.
    Binzel, Marla L.
    Okorokova-Facanha, Anna L.
    Facanha, Arnoldo R.
    [J]. PLANTA, 2010, 231 (05) : 1025 - 1036
  • [4] Variation in morphological and physiological parameters in herbaceous perennial legumes in response to phosphorus supply[J] . Jiayin Pang,Megan H. Ryan,Mark Tibbett,Gregory R. Cawthray,Kadambot H. M. Siddique,Mike D. A. Bolland,Matthew D. Denton,Hans Lambers.Plant and Soil . 2010 (1)
  • [5] Phosphorus deficiency does not enhance proton release by roots of soybean[Glycine max (L.) Murr.][J] . C. Tang,X.Z. Han,Y.F. Qiao,S.J. Zheng.Environmental and Experimental Botany . 2009 (1)
  • [6] Phosphate Availability Alters Lateral Root Development in Arabidopsis by Modulating Auxin Sensitivity via a Mechanism Involving the TIR1 Auxin Receptor(C)(W)(OA)[J] . Pérez-Torres, Claudia-Anahí,López-Bucio, José,Cruz-Ramírez, Alfredo,Ibarra-Laclette, Enrique,Dharmasiri, Sunethra,Estelle, Mark,Herrera-Estrella, Luis.Plant Cell . 2008 (12)
  • [7] Effects of physical connection and genetic identity of neighbouring ramets on root-placement patterns in two clonal species
    Semchenko, Marina
    John, Elizabeth A.
    Hutchings, Michael J.
    [J]. NEW PHYTOLOGIST, 2007, 176 (03) : 644 - 654
  • [8] Citrate exudation from white lupin induced by phosphorus deficiency differs from that induced by aluminum
    Wang, B. L.
    Shen, J. B.
    Zhang, W. H.
    Zhang, F. S.
    Neumann, G.
    [J]. NEW PHYTOLOGIST, 2007, 176 (03) : 581 - 589
  • [9] How do plants respond to nutrient shortage by biomass allocation?
    Hermans, Christian
    Hammond, John P.
    White, Philip J.
    Verbruggen, Nathalie
    [J]. TRENDS IN PLANT SCIENCE, 2006, 11 (12) : 610 - 617
  • [10] Root morphological plasticity for heterogeneous phosphorus supply in Zea mays L.
    Yano, K
    Kume, T
    [J]. PLANT PRODUCTION SCIENCE, 2005, 8 (04) : 427 - 432