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Ppd-1 is a key regulator of inflorescence architecture and paired spikelet development in wheat

Journal Article


Abstract


  • The domestication of cereal crops such as wheat, maize, rice and barley has included the modification of inflorescence architecture to improve grain yield and ease harvesting. Yield increases have often been achieved through modifying the number and arrangement of spikelets, which are specialized reproductive branches that form part of the inflorescence. Multiple genes that control spikelet development have been identified in maize, rice and barley. However, little is known about the genetic underpinnings of this process in wheat. Here, we describe a modified spikelet arrangement in wheat, termed paired spikelets. Combining comprehensive QTL and mutant analyses, we show that Photoperiod-1 (Ppd-1), a pseudo-response regulator gene that controls photoperiod-dependent floral induction, has a major inhibitory effect on paired spikelet formation by regulating the expression of FLOWERING LOCUS T (FT). These findings show that modulated expression of the two important flowering genes, Ppd-1 and FT, can be used to form a wheat inflorescence with a more elaborate arrangement and increased number of grain producing spikelets.

Authors


  •   Boden, Scott A. (external author)
  •   Cavanagh, Colin R. (external author)
  •   Cullis, Brian R.
  •   Ramm, Kerrie (external author)
  •   Greenwood, Julian (external author)
  •   Finnegan, E J. (external author)
  •   Trevaskis, Ben (external author)
  •   Swain, Steve M. (external author)

Publication Date


  • 2015

Citation


  • Boden, S., Cavanagh, C., Cullis, B. R., Ramm, K., Greenwood, J., Finnegan, E. Jean., Trevaskis, B. & Swain, S. M. (2015). Ppd-1 is a key regulator of inflorescence architecture and paired spikelet development in wheat. Nature Plants, 1 (2), 1-6.

Scopus Eid


  • 2-s2.0-84971589481

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5405

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 1

End Page


  • 6

Volume


  • 1

Issue


  • 2

Place Of Publication


  • United Kingdom

Abstract


  • The domestication of cereal crops such as wheat, maize, rice and barley has included the modification of inflorescence architecture to improve grain yield and ease harvesting. Yield increases have often been achieved through modifying the number and arrangement of spikelets, which are specialized reproductive branches that form part of the inflorescence. Multiple genes that control spikelet development have been identified in maize, rice and barley. However, little is known about the genetic underpinnings of this process in wheat. Here, we describe a modified spikelet arrangement in wheat, termed paired spikelets. Combining comprehensive QTL and mutant analyses, we show that Photoperiod-1 (Ppd-1), a pseudo-response regulator gene that controls photoperiod-dependent floral induction, has a major inhibitory effect on paired spikelet formation by regulating the expression of FLOWERING LOCUS T (FT). These findings show that modulated expression of the two important flowering genes, Ppd-1 and FT, can be used to form a wheat inflorescence with a more elaborate arrangement and increased number of grain producing spikelets.

Authors


  •   Boden, Scott A. (external author)
  •   Cavanagh, Colin R. (external author)
  •   Cullis, Brian R.
  •   Ramm, Kerrie (external author)
  •   Greenwood, Julian (external author)
  •   Finnegan, E J. (external author)
  •   Trevaskis, Ben (external author)
  •   Swain, Steve M. (external author)

Publication Date


  • 2015

Citation


  • Boden, S., Cavanagh, C., Cullis, B. R., Ramm, K., Greenwood, J., Finnegan, E. Jean., Trevaskis, B. & Swain, S. M. (2015). Ppd-1 is a key regulator of inflorescence architecture and paired spikelet development in wheat. Nature Plants, 1 (2), 1-6.

Scopus Eid


  • 2-s2.0-84971589481

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5405

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 1

End Page


  • 6

Volume


  • 1

Issue


  • 2

Place Of Publication


  • United Kingdom