About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 45 No. 3, p. 812-819
     
    Received: Mar 8, 2004


    * Corresponding author(s): jfp@unlserve.unl.edu
 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2135/cropsci2004.0155

Impact of Reduced Lignin on Plant Fitness

  1. J. F. Pedersen *a,
  2. K. P. Vogela and
  3. D. L. Funnellb
  1. a USDA-ARS, NPA Wheat, Sorghum, and Forage Research, Dep. of Agronomy, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0937
    b USDA-ARS, NPA Wheat, Sorghum, and Forage Research, Dep. of Plant Pathology, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0937

Abstract

Lignin content of crop plants has been reduced by traditional plant breeding, natural and induced mutations, and insertion of transgenes. The effects of these genes and associated lower lignin content have been examined in terms of agricultural fitness or with regard to economically harvestable yields of useful plant products, or, in the case of some perennial species, survivability over multiple years. In general, crop yields are depressed by significant reductions in lignin content. Other negative effects observed in plants with lowered lignin contents include lodging and reduction of long-term survival of some perennial species. However, the interactions of genes involved in lignin metabolism with genetic background and the environment in which the low-lignin crop is cultivated are substantial. Examples are provided that demonstrate that lignin can be reduced in specific lines or populations without damaging fitness. It is concluded that it will be essential to incorporate lignin reducing genes into numerous genetic backgrounds and combinations, and evaluate the resulting lines in diverse environments, to discover optimal combinations and to obtain a true measure of value and fitness in agricultural systems.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © 2005. Crop Science Society of AmericaCrop Science Society of America