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The Role of Dwarfing Traits in Historical and Modern Agriculture with a Focus on Rice.

Authors
  • Ferrero-Serrano, Ángel1
  • Cantos, Christian1
  • Assmann, Sarah M1
  • 1 Biology Department, Penn State University, University Park, Pennsylvania 16802, USA.
Type
Published Article
Journal
Cold Spring Harbor Perspectives in Biology
Publisher
Cold Spring Harbor Laboratory
Publication Date
Nov 01, 2019
Volume
11
Issue
11
Identifiers
DOI: 10.1101/cshperspect.a034645
PMID: 31358515
Source
Medline
Language
English
License
Unknown

Abstract

Semidwarf stature is a valuable agronomic trait in grain crops that reduces lodging and increases harvest index. A fundamental advance during the 1960s Green Revolution was the introduction of semidwarf cultivars of rice and wheat. Essentially, all semidwarf varieties of rice under cultivation today owe their diminished stature to a specific null mutation in the gibberellic acid (GA) biosynthesis gene, SD1 However, it is now well-established that, in addition to GAs, brassinosteroids and strigolactones also control plant height. In this review, we describe the synthesis and signaling pathways of these three hormones as understood in rice and discuss the mutants and transgenics in these pathways that confer semidwarfism and other valuable architectural traits. We propose that such genes offer underexploited opportunities for broadening the genetic basis and germplasm in semidwarf rice breeding. Copyright © 2019 Cold Spring Harbor Laboratory Press; all rights reserved.

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