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Expression studies of the zeaxanthin epoxidase gene in nicotiana plumbaginifolia.

Publication ,  Journal Article
Audran, C; Borel, C; Frey, A; Sotta, B; Meyer, C; Simonneau, T; Marion-Poll, A
Published in: Plant Physiol
November 1998

Abscisic acid (ABA) is a plant hormone involved in the control of a wide range of physiological processes, including adaptation to environmental stress and seed development. In higher plants ABA is a breakdown product of xanthophyll carotenoids (C40) via the C15 intermediate xanthoxin. The ABA2 gene of Nicotiana plumbaginifolia encodes zeaxanthin epoxidase, which catalyzes the conversion of zeaxanthin to violaxanthin. In this study we analyzed steady-state levels of ABA2 mRNA in N. plumbaginifolia. The ABA2 mRNA accumulated in all plant organs, but transcript levels were found to be higher in aerial parts (stems and leaves) than in roots and seeds. In leaves ABA2 mRNA accumulation displayed a day/night cycle; however, the ABA2 protein level remained constant. In roots no diurnal fluctuation in mRNA levels was observed. In seeds the ABA2 mRNA level peaked around the middle of development, when ABA content has been shown to increase in many species. In conditions of drought stress, ABA levels increased in both leaves and roots. A concomitant accumulation of ABA2 mRNA was observed in roots but not in leaves. These results are discussed in relation to the role of zeaxanthin epoxidase both in the xanthophyll cycle and in the synthesis of ABA precursors.

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Published In

Plant Physiol

DOI

EISSN

1532-2548

Publication Date

November 1998

Volume

118

Issue

3

Start / End Page

1021 / 1028

Location

United States

Related Subject Headings

  • Plant Biology & Botany
  • 3108 Plant biology
  • 07 Agricultural and Veterinary Sciences
  • 06 Biological Sciences
 

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Audran, C., Borel, C., Frey, A., Sotta, B., Meyer, C., Simonneau, T., & Marion-Poll, A. (1998). Expression studies of the zeaxanthin epoxidase gene in nicotiana plumbaginifolia. Plant Physiol, 118(3), 1021–1028. https://doi.org/10.1104/pp.118.3.1021
Audran, C., C. Borel, A. Frey, B. Sotta, C. Meyer, T. Simonneau, and A. Marion-Poll. “Expression studies of the zeaxanthin epoxidase gene in nicotiana plumbaginifolia.Plant Physiol 118, no. 3 (November 1998): 1021–28. https://doi.org/10.1104/pp.118.3.1021.
Audran C, Borel C, Frey A, Sotta B, Meyer C, Simonneau T, et al. Expression studies of the zeaxanthin epoxidase gene in nicotiana plumbaginifolia. Plant Physiol. 1998 Nov;118(3):1021–8.
Audran, C., et al. “Expression studies of the zeaxanthin epoxidase gene in nicotiana plumbaginifolia.Plant Physiol, vol. 118, no. 3, Nov. 1998, pp. 1021–28. Pubmed, doi:10.1104/pp.118.3.1021.
Audran C, Borel C, Frey A, Sotta B, Meyer C, Simonneau T, Marion-Poll A. Expression studies of the zeaxanthin epoxidase gene in nicotiana plumbaginifolia. Plant Physiol. 1998 Nov;118(3):1021–1028.

Published In

Plant Physiol

DOI

EISSN

1532-2548

Publication Date

November 1998

Volume

118

Issue

3

Start / End Page

1021 / 1028

Location

United States

Related Subject Headings

  • Plant Biology & Botany
  • 3108 Plant biology
  • 07 Agricultural and Veterinary Sciences
  • 06 Biological Sciences