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Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat./
Author:	Paraiso, Francine Johnson.
Description:	1 online resource (50 pages)
Notes:	Source: Masters Abstracts International, Volume: 86-02.
Contained By:	Masters Abstracts International86-02.
Subject:	Genetics. -
Online resource:	click for full text (PQDT)
ISBN:	9798383609637

Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat.
Paraiso, Francine Johnson.

Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat. - 1 online resource (50 pages)

Source: Masters Abstracts International, Volume: 86-02.

Thesis (M.S.)--University of California, Davis, 2024.

Includes bibliographical references

In wheat, the transition of the inflorescence meristem to a terminal spikelet (IM>TS) determines the spikelet number per spike (SNS), an important grain yield component. In this study, we demonstrate that the plant-specific transcription factor LEAFY (LFY) physically and genetically interacts with WHEAT ORTHOLOG OF APO1 (WAPO1) and that both genes act cooperatively to increase SNS. Loss-of-function mutations in either or both genes result in significant and similar reductions in SNS. We also show that this trait is modulated by significant genetic interactions between LFY and the SQUAMOSA MADS-box genes VRN1 and FUL2, which promote the IM>TS transition. Single-molecule fluorescence in-situ hybridization revealed a down-regulation of LFY and up-regulation of the SQUAMOSA MADS-box genes in the distal part of the developing spike during the IM>TS transition, supporting the opposite roles of these genes in the regulation of SNS in wheat. This transition coincides with the partial overlap of LFY and WAPO1 transcription domains in the most developed spikelets. Understanding the genetic network regulating SNS is a necessary first step to engineer this important agronomic trait.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798383609637Subjects--Topical Terms:

578972
Genetics.
Subjects--Index Terms:

Spikelet number per spikeIndex Terms--Genre/Form:

554714
Electronic books.

Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat.
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500 $a Source: Masters Abstracts International, Volume: 86-02.
500 $a Includes supplementary digital materials.
500 $a Advisor: Dubcovsky, Jorge.
502 $a Thesis (M.S.)--University of California, Davis, 2024.
504 $a Includes bibliographical references
520 $a In wheat, the transition of the inflorescence meristem to a terminal spikelet (IM>TS) determines the spikelet number per spike (SNS), an important grain yield component. In this study, we demonstrate that the plant-specific transcription factor LEAFY (LFY) physically and genetically interacts with WHEAT ORTHOLOG OF APO1 (WAPO1) and that both genes act cooperatively to increase SNS. Loss-of-function mutations in either or both genes result in significant and similar reductions in SNS. We also show that this trait is modulated by significant genetic interactions between LFY and the SQUAMOSA MADS-box genes VRN1 and FUL2, which promote the IM>TS transition. Single-molecule fluorescence in-situ hybridization revealed a down-regulation of LFY and up-regulation of the SQUAMOSA MADS-box genes in the distal part of the developing spike during the IM>TS transition, supporting the opposite roles of these genes in the regulation of SNS in wheat. This transition coincides with the partial overlap of LFY and WAPO1 transcription domains in the most developed spikelets. Understanding the genetic network regulating SNS is a necessary first step to engineer this important agronomic trait.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Genetics. $3 578972
650 4 $a Molecular biology. $3 583443
650 4 $a Agronomy. $3 1027735
650 4 $a Horticulture. $3 1058420
653 $a Spikelet number per spike
653 $a Single-molecule fluorescence
653 $a Agronomic trait
653 $a Genetic interactions
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690 $a 0307
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710 2 $a University of California, Davis. $b Horticulture and Agronomy. $3 1190616
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