Dissertation > Excellent graduate degree dissertation topics show

Preliminary Study on Salt Tolerance Regulated by Polyamines in Arabidopsis Thaliana

Author: WeiQiuPing
Tutor: ZhangWenHua
School: Nanjing Agricultural College
Course: Botany
Keywords: Polyamine Arabidopsis Salt stress Ion balance
CLC: Q945.78
Type: Master's thesis
Year: 2007
Downloads: 114
Quote: 0
Read: Download Dissertation

Abstract


Salt stress can cause the plant tissue polyamine levels , while the exogenous polyamines processing can enhance the resistance of plants to salt stress , but exogenous polyamines mechanism is unclear . This selection Arabidopsis (Arabidopsisthiliana) study comparing different concentrations , different types of exogenous polyamines using different concentrations of salt stress in Arabidopsis seedlings endogenous polyamine content of Arabidopsis seedlings salt damage mitigation effect; determination and exogenous spermine alleviate the Arabidopsis salt damage combined method to study the relationship between polyamines and salt Tolerance . The results are as follows : 100 mmol / L NaCl stress on Arabidopsis seedling growth was significantly inhibited compared four kinds of different concentrations of exogenous polyamines - putrescine ( Put ) under the same conditions , cadaverine (Cad), Asia spermidine (Spd), spermine (Spm) the Arabidopsis seedling salt damage mitigation effect , found plus 0.01 mmol / L Spd, 0.01 mmol / L Spm in varying degrees, can increase seedling root elongation and fresh and dried weight, of which 0.01 mmol / L Spm effect more significant; but 1mmol / L Put and 0.05 mmol / L Cad role relatively insignificant . Arabidopsis seedlings under different concentrations of NaCl treatment three forms polyamine content were measured , 50 mmol / L NaCl stimulus perchloric acid soluble conjugated Spd accumulation , in addition , with the increase in salt concentration free state and perchloric acid soluble combined with state Spd content decreased significantly Spm contents gradually increased ; 150mmol / L NaCl treatment seven days the free Put lower than the same period in the control , in other concentration and time of processing conditions , three forms Put content will remain basically unchanged . The three forms of CAD content in all treatment conditions, are not significantly changed. Bound compared with the free state and perchloric acid soluble , perchloric acid insoluble bound polyamines more stable and less affected by salt treatment . With the treatment time , the total polyamine content decreased . Exogenous administration of 0.01 mmol / L Spm to Arabidopsis seedlings damage to 100 mmol / L NaCl stress significantly alleviate the effects , not only can effectively inhibit MDA content in the leaves rise and increase in membrane permeability , but also reduce plant body content of Na ~ increased accumulation of K ~ to reduce the plants of Na ~~ / K ~~ the results showed that exogenous spermine alleviate the damage of salt stress on Arabidopsis seedlings through the regulation of ion balance .

Related Dissertations

  1. Effects of CRZ-1 on Growth of Wheat under Salt Stress, Chlorophyllase and Yield,S512.1
  2. Preliminary Study on Salt-Tolerant Mechanism of the New Pennisetum Purpereum Schumach Variety-Sumu No.2,S543.9
  3. Molecular Cloning of Rice and Arabidopsis Ceramidase and Identification of Mutants,S511
  4. Functional Analysis of ACD5 during Infection of Botrytis Cinerea in Arabidopsis Thaliana,S432.1
  5. Functional Analysis of MdCBF1 in Malus Domestica Borkh. CV. Fuji,S661.1
  6. Effect of SO2 Exposure on DNA Methylation Polymorphism in Arabiadopsis Thaliana,Q943
  7. Construction of Silence Vector for Cytochrome b Gene in Nucleus of Arabidopsis Thaliana and the Transformation,Q943
  8. Metabolic Engineering of Ascorbic Acid Synthesis Pathway in Arabidopsis by a Dual-Gene Vector System,Q943
  9. Evaluation of Mouse Gulonolactone Oxidase Gene Transformed Arabidopsis Thaliana,Q943.2
  10. Analysis on Function of PP2CA2 Gene T-DNA Insertion Mutant in Arabidopsis,Q943.2
  11. Cloning and Functional Analysis of a Gene Corresponding to Salt-tolerance in Wheat,S512.1
  12. The Function of O1 Type Thioredoxin Gene in Arabidopsis Thaliana under Environmental Stress,Q945.78
  13. Genetic Analysis and Gene Mapping of a Floral Organ Development Mutant in Arabidopsis,Q943
  14. Synthesis, Characterization and Properties of the N,N’-bis(3-aminopropyl)-2-hydroxypropylamine Complexes,O621.13
  15. Synthesis of N,N’-bis(3’-aminopropyl)-3-hydroxypropyl-amine and Research on the Polynitrogen Complexes,TQ226.31
  16. The Function Characterization of Salt-tolerant Correlative Gene TaRSP and TA-pSRP in Wheat,S512.1
  17. The Reseach of Controlling Aphis Gossipy by Transgenic Technology,S188
  18. The Study of Cloning of NPR1 Genes in Two Plants and Transformation of Poplar,S792.11
  19. The Function Study of a SAUR Gene in Arabidopsis,Q943.2
  20. The Research on the Role of ROPgefs in ABA Signal Tansmission of Arabidopsis Thaliana and Energy Resurces from Pueraria Lobata,S632.9
  21. Construction of Plant Expression Vector Carrying SsBHMT Gene and Transformation to Arabidopsis Thaliana,Q943.2

CLC: > Biological Sciences > Botany > Plant Physiology > Hip forced Physiology
© 2012 www.DissertationTopic.Net  Mobile