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Crosstalk among hormones in barley spike contributes to the yield

Youssef, Helmy M. LU and Hansson, Mats LU (2019) In Plant Cell Reports
Abstract

Key message: The hormonal ratios along the barley spike regulate the development, atrophy and abortion of the spikelets and could be the mechanism by which the barley spike adapts its yield potential. Abstract: Barley (Hordeum vulgare L.) is one of the oldest cereal crops known to be cultivated since about 10,000 years. The inflorescence of cultivated barley is an indeterminate spike that produces three single-flowered spikelets at each rachis node which make it unique among the grasses. The yield production in barley is predominantly controlled by very important parameters such as number of tillers and number of spikelets per spike. These two parameters are negatively correlated. Therefore, studying the biological and genetics of the... (More)

Key message: The hormonal ratios along the barley spike regulate the development, atrophy and abortion of the spikelets and could be the mechanism by which the barley spike adapts its yield potential. Abstract: Barley (Hordeum vulgare L.) is one of the oldest cereal crops known to be cultivated since about 10,000 years. The inflorescence of cultivated barley is an indeterminate spike that produces three single-flowered spikelets at each rachis node which make it unique among the grasses. The yield production in barley is predominantly controlled by very important parameters such as number of tillers and number of spikelets per spike. These two parameters are negatively correlated. Therefore, studying the biological and genetics of the spikelet development during the spike developmental stages is essential for breeding programs. Here we summarize our current understanding of the crosstalk between hormones such as auxin, cytokinin, gibberellin and abscisic acid along the spike and what is their role in regulating spike and spikelet development in barley. We conclude that the hormonal ratios at the apical, central, and basal sections of the spike not only regulate the spike developmental stages, but also the development, atrophy, and abortion of the spikelets. This hormonal dependent modification of the grain number along the spike could be the mechanism by which the barley spike adapts its yield potential.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
ABA, Barley spike, Barley yield, CK, GA, Hormones crosstalk, IAA
in
Plant Cell Reports
publisher
Springer
external identifiers
  • scopus:85066793237
ISSN
0721-7714
DOI
10.1007/s00299-019-02430-0
language
English
LU publication?
yes
id
bfcc7c7a-297d-4575-98df-cb6aa54aa626
date added to LUP
2019-06-24 10:47:28
date last changed
2019-11-13 05:37:04
@article{bfcc7c7a-297d-4575-98df-cb6aa54aa626,
  abstract     = {<p>Key message: The hormonal ratios along the barley spike regulate the development, atrophy and abortion of the spikelets and could be the mechanism by which the barley spike adapts its yield potential. Abstract: Barley (Hordeum vulgare L.) is one of the oldest cereal crops known to be cultivated since about 10,000 years. The inflorescence of cultivated barley is an indeterminate spike that produces three single-flowered spikelets at each rachis node which make it unique among the grasses. The yield production in barley is predominantly controlled by very important parameters such as number of tillers and number of spikelets per spike. These two parameters are negatively correlated. Therefore, studying the biological and genetics of the spikelet development during the spike developmental stages is essential for breeding programs. Here we summarize our current understanding of the crosstalk between hormones such as auxin, cytokinin, gibberellin and abscisic acid along the spike and what is their role in regulating spike and spikelet development in barley. We conclude that the hormonal ratios at the apical, central, and basal sections of the spike not only regulate the spike developmental stages, but also the development, atrophy, and abortion of the spikelets. This hormonal dependent modification of the grain number along the spike could be the mechanism by which the barley spike adapts its yield potential.</p>},
  author       = {Youssef, Helmy M. and Hansson, Mats},
  issn         = {0721-7714},
  keyword      = {ABA,Barley spike,Barley yield,CK,GA,Hormones crosstalk,IAA},
  language     = {eng},
  month        = {05},
  publisher    = {Springer},
  series       = {Plant Cell Reports},
  title        = {Crosstalk among hormones in barley spike contributes to the yield},
  url          = {http://dx.doi.org/10.1007/s00299-019-02430-0},
  year         = {2019},
}