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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 343-344The Involvement of Nitric Oxide and Hydrogen...

The Involvement of Nitric Oxide and Hydrogen Peroxide in eATP-Inhibited Pollen Germination and Tube Growth of Paulownia Tomentosa In Vitro

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Abstract:

Role of nitric oxide(NO) and hydrogen peroxide(H₂O₂) in eATP-inhibited reduction of in vitro pollen germination and tube growth of Paulownia tomentosa Steud. were studied. Results showed that exposure of the pollen to a series of eATP (0.2, 0.4, 0.6, 0.8, 1.0 mM) concentration for 3h resulted in not only the reduction of pollen germination but also the reduction of tube growth. Also, NOS inhibitor NG-nitro-L-Arg-methyl eater (L-NAME ), NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3- oxide(c-PTIO) and two scavengers of H₂O₂, ascorbic acid (ASC) and catalase (CAT) not only largely prevented eATP-inhibited pollen germination but also tube growth. These results indicated that NO and H₂O₂ are involved in eATP inhibited pollen germination and tube growth.

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Periodical:

Advanced Materials Research (Volumes 343-344)

Pages:

347-350

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.343-344.347

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Online since:

September 2011

Authors:

Yuan Hua Zhang, Xiao Ping She

Keywords:

eATP, Hydrogen Peroxide, Nitric Oxide (NO), Pollen Germination, Pollen Tube Growth

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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