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Leafy Regulates Spikelet Number per ...

Paraiso, Francine Johnson.

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

Record Type:	Electronic resources : Monograph/item
Title/Author:	Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat./
Author:	Paraiso, Francine Johnson.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
Description:	50 p.
Notes:	Source: Masters Abstracts International, Volume: 86-02.
Contained By:	Masters Abstracts International86-02.
Subject:	Genetics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31142649
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. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 50 p.

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

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

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.

ISBN: 9798383609637Subjects--Topical Terms:

530508
Genetics.
Subjects--Index Terms:

Spikelet number per spike

Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat.
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100 1 $a Paraiso, Francine Johnson. $3 3773733
245 1 0 $a Leafy Regulates Spikelet Number per Spike and Floret Development in Wheat.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 50 p.
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.
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.
590 $a School code: 0029.
650 4 $a Genetics. $3 530508
650 4 $a Molecular biology. $3 517296
650 4 $a Agronomy. $3 2122783
650 4 $a Horticulture. $3 555447
653 $a Spikelet number per spike
653 $a Single-molecule fluorescence
653 $a Agronomic trait
653 $a Genetic interactions
690 $a 0369
690 $a 0307
690 $a 0471
690 $a 0285
710 2 $a University of California, Davis. $b Horticulture and Agronomy. $3 1676792
773 0 $t Masters Abstracts International $g 86-02.
790 $a 0029
791 $a M.S.
792 $a 2024
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31142649