Characterization of a gene from Zea mays related to the Arabidopsis flowering-time gene LUMINIDEPENDENS

Characterization of a gene from Zea mays related to the Arabidopsis flowering-time gene... The molecular biology of flowering has been most extensively studied in the quantitative long-day plant Arabidopsis thaliana. The Arabidopsis LUMINIDEPENDENS (LD) gene encodes a potential transcriptional regulator that acts as a positive effector of flowering, at least in part through suppression of the floral inhibitor gene FLC. As an initial step to explore the conservation of the molecular mechanisms of flowering among plants of various flowering habits, and to further investigate the molecular action(s) of LD, we have identified a gene from maize (Zea mays) that is closely related to Arabidopsis LD. The major product of this gene, which we have designated ZmLD for Zea mays LUMINIDEPENDENS, contains four conserved regions that may constitute functionally important components of the LD proteins. One of these regions closely resembles the canonical homeodomain. The ZmLD gene exists as a single copy in the maize genome, and generates a major ca. 4.0 kb transcript, and a minor ca. 2.6 kb transcript that results from alternative transcriptional termination. The 4.0 kb ZmLDα transcript accumulated to highest levels in proliferative tissues, including the shoot apex and developing inflorescences. Expression of ZmLDα under control of the Arabidopsis LD promoter in transgenic Arabidopsis caused developmental defects similar to those conferred by loss-of-function mutations in a class of genes involved in maintaining the proliferative nature of the shoot, inflorescence, and floral meristems. These effects were not influenced markedly by the activities of the Arabidopsis LD or FLC genes. We consider the implications for the conservation of LD function between maize and Arabidopsis. Plant Molecular Biology Springer Journals

Characterization of a gene from Zea mays related to the Arabidopsis flowering-time gene LUMINIDEPENDENS

Loading next page...
Kluwer Academic Publishers
Copyright © 2000 by Kluwer Academic Publishers
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial