Biologia Plantarum

, Volume 54, Issue 2, pp 395–399 | Cite as

Gibberellin retards chlorophyll degradation during senescence of Paris polyphylla

  • J. R. Li
  • K. Yu
  • J. R. Wei
  • Q. Ma
  • B. Q. Wang
  • D. Yu
Brief Communication
First Online:
Received:
Accepted:

Abstract

Chlorophyll (Chl) degradation was found to be related to the endogenous gibberellin (GA) content in shoots during senescence in the perennial plant Paris polyphylla var. yunnanensis (Franch.). Treatment with gibberellic acid (GA3) significantly increased the content of endogenous GAs (GA4 + GA7), retarded the senescence of shoots, and the degradation of proteins and Chl. Chlorophyllase, Mg-dechelation and peroxidase activities increased more in control plants than in those treated with GA3. GA3 treatment also protected lipoxygenase activity, which decreased significantly in control plants.

Additional key words

chlorophyll catabolism chlorophyllase lipoxygenase Mg-dechelation activity peroxidase 

Abbreviations

Chl

chlorophyll

Chlase

chlorophyllase

f.m.

fresh mass

GA

gibberellin

GA3

gibberellic acid

GAs

GA4 + GA7

LOX

lipoxygenase

POD

peroxidase

VPD

vapor pressure deficit

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Notes

Acknowledgements

We thank Dr. S. Tang at Pennsylvania State University for her critical reading of the manuscript. This work was funded by grants from the Special Foundation of Province-CAS and Province-University scientific and technological cooperation of Yunnan province (2004YX20) and the Key Grant Project of the Chinese Ministry of Education (No. 307018.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • J. R. Li
    • 1
  • K. Yu
    • 1
  • J. R. Wei
    • 2
  • Q. Ma
    • 2
  • B. Q. Wang
    • 2
  • D. Yu
    • 1
  1. 1.Key Laboratory of Ministry of Education for Plant Developmental Biology, College of Life SciencesWuhan UniversityWuhanP.R. China
  2. 2.Yunnan Baiyao Group CompanyKunmingP.R. China

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