Phenylpropanoid compounds and disease resistance in transgenic tobacco with altered expression of L-phenylalanine ammonia-lyase

PDF Version Also Available for Download.

Description

Article on phenylpropanoid compounds and disease resistance in transgenic tobacco with altered expression of L-phenylalanine ammonia-lyase.

Physical Description

9 p. : col. ill.

Creation Information

Shadle, Gail L.; Wesley, S. Varsha; Korth, Kenneth L.; Chen, Fang; Lamb, Christopher J. & Dixon, R. A. January 18, 2003.

Context

This article is part of the collection entitled: UNT Scholarly Works and was provided by UNT College of Arts and Sciences to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 100 times . More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

Publisher

Provided By

UNT College of Arts and Sciences

The UNT College of Arts and Sciences educates students in traditional liberal arts, performing arts, sciences, professional, and technical academic programs. In addition to its departments, the college includes academic centers, institutes, programs, and offices providing diverse courses of study.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Degree Information

Description

Article on phenylpropanoid compounds and disease resistance in transgenic tobacco with altered expression of L-phenylalanine ammonia-lyase.

Physical Description

9 p. : col. ill.

Notes

Abstract: Tobacco plants over-expressing l-phenylalanine ammonia-lyase (PAL+) produce high levels of chlorogenic acid (CGA) and exhibit markedly reduced susceptibility to infection with the fungal pathogen Cercospora nicotianae, although their resistance to tobacco mosaic virus (TMV) is unchanged. Levels of the signal molecule salicylic acid (SA) were similar in uninfected PAL+ and control plants and also following TMV infection. In crosses of PAL+ tobacco with tobacco harboring the bacterial NahG salicylate hydroxylase gene, progeny harboring both transgenes lost resistance to TMV, indicating that SA is critical for resistance to TMV and that increased production of phenylpropanoid compounds such as CGA cannot substitute for the reduction in SA levels. In contrast, PAL+/NahG plants showed strongly reduced susceptibility to Cercospora nicotianae compared to the NahG parent line. These results are consistent with a recent report questioning the role of PAL in SA biosynthesis in Arabidopsis, and highlight the importance of phenylpropanoid compounds such as CGA in plant disease resistance.

Copyright © 2003 Elsevier Science Ltd. All rights reserved. http://www.sciencedirect.com/science/article/pii/S0031942203001511

Source

  • Phytochemistry, 2003, New York: Elsevier Science Ltd., pp. 153-161

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

Publication Information

  • Publication Title: Phytochemistry
  • Volume: 64
  • Issue: 1
  • Page Start: 153
  • Page End: 161
  • Pages: 9
  • Peer Reviewed: Yes

Collections

This article is part of the following collection of related materials.

UNT Scholarly Works

Materials from the UNT community's research, creative, and scholarly activities and UNT's Open Access Repository. Access to some items in this collection may be restricted.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Submitted Date

  • November 22, 2002

Creation Date

  • January 18, 2003

Added to The UNT Digital Library

  • Jan. 22, 2015, 9:04 a.m.

Description Last Updated

  • June 29, 2015, 3:23 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 100

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Shadle, Gail L.; Wesley, S. Varsha; Korth, Kenneth L.; Chen, Fang; Lamb, Christopher J. & Dixon, R. A. Phenylpropanoid compounds and disease resistance in transgenic tobacco with altered expression of L-phenylalanine ammonia-lyase, article, January 18, 2003; [New York, New York]. (digital.library.unt.edu/ark:/67531/metadc488153/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.