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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1111/nph.19256
|2 doi
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|a pubmed24n1226.xml
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|a (DE-627)NLM361887841
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|a (NLM)37691304
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Cseh, András
|e verfasserin
|4 aut
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|a Meiotic instability and irregular chromosome pairing underpin heat-induced infertility in bread wheat carrying the Rht-B1b or Rht-D1b Green Revolution genes
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 11.12.2023
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|a Date Revised 11.12.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
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|a Mutations in the Rht-B1a and Rht-D1a genes of wheat (Triticum aestivum; resulting in Rht-B1b and Rht-D1b alleles) cause gibberellin-insensitive dwarfism and are one of the most important elements of increased yield introduced during the 'Green Revolution'. We measured the effects of a short period of heat imposed during the early reproductive stage on near-isogenic lines carrying Rht-B1b or Rht-D1b alleles, with respect to the wild-type (WT). The temperature shift caused a significant fertility loss within the ears of Rht-B1b and Rht-D1b wheats, greater than that observed for the WT. Defects in chromosome synapsis, reduced homologous recombination and a high frequency of chromosome mis-segregation were associated with reduced fertility. The transcription of TaGA3ox gene involved in the final stage of gibberellic acid (GA) biosynthesis was activated and ultra-performance liquid chromatography-tandem mass spectrometry identified GA1 as the dominant bioactive GA in developing ears, but levels were unaffected by the elevated temperature. Rht-B1b and Rht-D1b mutants were inclined to meiotic errors under optimal temperatures and showed a higher susceptibility to heat than their tall counterparts. Identification and introduction of new dwarfing alleles into modern breeding programmes is invaluable in the development of climate-resilient wheat varieties
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|a Journal Article
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|a Rht-B1b and Rht-D1b dwarfing genes
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|a bread wheat (Triticum aestivum)
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| 650 |
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|a chromosome synapsis
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|a climate change
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|a gibberellic acid
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|a heat stress
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|a meiosis
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| 650 |
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|a recombination
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|a Lenykó-Thegze, Andrea
|e verfasserin
|4 aut
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|a Makai, Diána
|e verfasserin
|4 aut
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|a Szabados, Fanni
|e verfasserin
|4 aut
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|a Hamow, Kamirán Áron
|e verfasserin
|4 aut
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|a Gulyás, Zsolt
|e verfasserin
|4 aut
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|a Kiss, Tibor
|e verfasserin
|4 aut
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|a Karsai, Ildikó
|e verfasserin
|4 aut
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|a Moncsek, Blanka
|e verfasserin
|4 aut
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|a Mihók, Edit
|e verfasserin
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|a Sepsi, Adél
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 241(2023), 1 vom: 10. Jan., Seite 180-196
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:241
|g year:2023
|g number:1
|g day:10
|g month:01
|g pages:180-196
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|u http://dx.doi.org/10.1111/nph.19256
|3 Volltext
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|d 241
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