Chin J Plan Ecolo ›› 2006, Vol. 30 ›› Issue (6): 947-953.doi: 10.17521/cjpe.2006.0120

• Research Articles • Previous Articles     Next Articles

EFFECTS OF ARBUSCULAR MYCORRHIZAL FUNGI ON THE GROWTH AND ABSORPTION OF NITROGEN AND PHOSPHORUS IN CAMPTOTHECA ACUMINATA SEEDLINGS

ZHAO Xin; YAN Xiu_Feng   

  1. College of Life Sciences, Northeast Forestry University, Harbin 150040, China
  • Online:2006-11-30 Published:2006-11-30
  • Contact: YAN Xiu_Feng

Abstract:

Background and Aims Camptotheca acuminatais a special Chinese tree that produces camptothecin (CPT), a monoterpenoid indole alkaloid, which has gained great attention for its remarkable inhibitory activity against tumour cells. 
Methods After 70-day growth period,seedlings were inoculated with the arbuscular mycorrhizal(AM) fungi, Glomus manihot (Gm), G. versiforme (Gv),G. etunicatum (Ge), G. diaphanum (Gd), Acaulospora mellea (Am) and A. laevis (Al), respectively.
Key Results We investigated the effects of six species of AM fungi, belonging to two genera, on the growth, absorption of nitrogen and phosphorus in C. acuminataseedlings grown in the greenhouse. All inoculated seedlings were infected by six AM fungi and formed arbuscular mycorrhiza. The seedling growth and nitrogen and phosphorus absorption were affected by the formation of arbuscular mycorrhiza inC. acuminata. The biomass of mycorrhizal seedlings was significantly higher than that of non-mycorrhizal seedlings. For most mycorrhizal seedlings, the ratio of root to shoot was larger than that of the control. Nitrogen contents in Gm, Gv, Ge and Al were significantly lower than in the control. In contrast, phosphorus contents in plant of all mycorrhizal seedlings were higher than in non-mycorrhizal seedlings. Arbuscular mycorrhizal formation also changed the allocation of nitrogen and phosphorus in different organs of seedlings. 
Conclusions These patterns suggest that the symbiotic association between C. acuminata roots and AM fungi effectively maintains nutrient homeostasis through changes in physiological properties, including nutrient uptake and allocation.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] Zhigang Huang;Huang Hu;Xuanzhi Zhao;Ruozhong Wang;Langtao Xiao *. Cloning and Bioinformatics Analysis of TIR1 cDNA from Super Hybrid Rice Parental Line 1S[J]. Chin Bull Bot, 2008, 25(06): 695 -700 .
[2] JIA Yan-Tao. Plant Disease Resistance Signaling Pathways[J]. Chin Bull Bot, 2003, 20(05): 602 -608 .
[3] TAN Yun YE Qing-Sheng LIU Wei. Tissue Culture of Dendrobidium huoshanness[J]. Chin Bull Bot, 2005, 22(01): 58 -62 .
[4] Dahong Li;Hui Liu;Yanli Yang;Pingping Zhen;Jiansheng Liang. Down-regulation of OsRACK1 by Anti-sense Approach Results in Drought Tolerance Enhancement in Rice (Oryza sativa)[J]. Chin Bull Bot, 2008, 25(06): 648 -655 .
[5] Xiuxia He;Yuanhua Yu*;Yong Zhang. Genetic Transformation of PSY Gene in Ginseng[J]. Chin Bull Bot, 2008, 25(05): 579 -584 .
[6] . [J]. Chin Bull Bot, 1996, 13(专辑): 72 .
[7] Mingkun Liu;Guanjun Liu;Xiufeng Yan. Co-expression of Polygonum sibiricum Glutathione Transferase and Cysteine Synthase Genes in Saccharomyces cerevisiae[J]. Chin Bull Bot, 2008, 25(06): 687 -694 .
[8] Zhong Heng;Li Zhi-hua and Liao Wen-bo. Rhizophore and Stigmaria of Lycopodinae and Isoetinae[J]. Chin Bull Bot, 1997, 14(02): 61 -64 .
[9] XU Xiao-Biao ZHANG Qiu-Ming. Researches and Utilizations of Germplasm Resource of Kiwifruit in China[J]. Chin Bull Bot, 2003, 20(06): 648 -655 .
[10] Chen Qi-feng;Cheng Zhang and Wang Ji-ling. Effects of a-Picolinic Acid and The Crude Toxin Extracts From pyricularia oryzae on in Vitro Embryo Culture and Seedling Growth of Rice[J]. Chin Bull Bot, 1993, 10(02): 39 -43 .