Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1995 Jul;28(4):739-50.
doi: 10.1007/BF00021197.

Aerobic fermentation in tobacco pollen

M Bucher  1 , K A Brander, S Sbicego, T Mandel, C Kuhlemeier
Affiliations

Aerobic fermentation in tobacco pollen

M Bucher et al. Plant Mol Biol. 1995 Jul.

Abstract

We characterized the genes coding for the two dedicated enzymes of ethanolic fermentation, alcohol dehydrogenase (ADH) and pyruvate decarboxylase (PDC), and show that they are functional in pollen. Two PDC-encoding genes were isolated, which displayed reciprocal regulation: PDC1 was anaerobically induced in leaves, whereas PDC2 mRNA was absent in leaves, but constitutively present in pollen. A flux through the ethanolic fermentation pathway could be measured in pollen under all tested environmental and developmental conditions. Surprisingly, the major factor influencing the rate of ethanol production was not oxygen availability, but the composition of the incubation medium. Under optimal conditions for pollen tube growth, approximately two-thirds of the carbon consumed was fermented, and ethanol accumulated into the surrounding medium to a concentration exceeding 100 mM.

PubMed Disclaimer

References

    1. Plant Physiol. 1993 Oct;103(2):441-8 - PubMed
    1. Mol Gen Genet. 1993 Aug;240(2):206-12 - PubMed
    1. Plant Cell. 1994 Jun;6(6):799-810 - PubMed
    1. Science. 1978 May 5;200(4341):561-3 - PubMed
    1. Nucleic Acids Res. 1991 Oct 25;19(20):5491-6 - PubMed

Publication types

MeSH terms

LinkOut - more resources