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植物細胞生理学(第11回 12/12) 開花/形態形成 PowerPoint PPT Presentation


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植物細胞生理学(第11回 12/12) 開花/形態形成. 開花. 花成はたいへん複雑. 春化(バーナリゼーション) <第3回>  光周性  長日 短日 など 花成   <第7回>   フロリゲンの正体は FT (シロイヌナズナ)   イネでは Hd3a が相同   花の形態形成  ABC モデル  <第7回> 花色 <第4回他> つぼみ→(狭い意味での)開花 アクアポリン  <第8回> いろいろな花. 世界1大きい花(ラフレシア). Science 315:1812 (2007). Euphorbiaceae (トウダイグサ科)  ポインセチアなど.

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植物細胞生理学(第11回 12/12) 開花/形態形成

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  • FTHd3a

  • ABC

Science 315:1812 (2007)

Euphorbiaceae


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http://plaza.umin.ac.jp/~life-sci/fujisan/puya/puya.htm


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alternativeoxidase

AOX:

UCPuncouplingprotein


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  • PrPfr

Pr

Pr

FT Hd3a)


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100%


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CO

TOC1: Timing of CAB Expression 1

TPR: Pseudo-Response Regulator

Kai)in vitro

COCONSTANS

FT

PRR1/TOC1mRNA


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  • VRN1

    VRN2

VRN2ZCCT1

Zn

CO

AP1vrn1)

(Science303:1640(2004))

VRN1ZCCT1

unvernalized (U) or vernalized (V)

AY485644.3

VRN2(=ZCCT1)

vrn1

VRN1AP1

ZCCTRNAi


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Xylogen is an arabinogalactan protein that induces xylem differentiation.

Nature

Plant response to stress meets dedifferentiation

Planta 233:433 (2011)


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WOX5 expression in the quiescent centre is required for root meristem development

(columella (col), columella stem cells (CSC), quiescent centre (QC), lateral root cap (lrc), epidermis (ep), cortex (c))

Nature 446, 811(2007)


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WOX5WUSCHEL-RELATED HOMEOBOX 5

SCR expression

WT

scr mutant

scr mutant expressing introduced SCR

A combinatorial code of SCR, SHR and the auxin-dependent PLT genes specifies the root stem cell region

SCRSHRSHRSCR

SHR: SHORT-ROOT

SCR: SCARECROW


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SLR=IAA14

slr

Aux

ARF

AUXIN RESPONSE FACTOR

Science 316:477 (2007)

AtRHD6p::GFP:AtRHD6

in the Atrhd6-3

RHD: ROOT HAIR DEFECTIVE

RSL: RHD SIX-LIKE

RHD6

RSL1

RSL4 Auxin

Root hair formation

NatureGenetics 42:264, 2010)

AtRHD6 is a positive regulator of root hair development in A. thaliana

slrsolitary-root

http://www.research.kobe-u.ac.jp/fsci-fukaki/fukaki/back-3.html

AtRSL1 is a positive regulator of root hair development in A. thaliana


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Salt stress signals shape the plant root

Short on phosphate: plant surveillance and countermeasures

Current Opinion in Plant Biology 14:1-7, 2011

Trends in Plant Science 9:548 (2004)

PDR2: Phosphate Deficiency Response 2

Low PiPDR2 Root meristem


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ANROT3

http://www.jspp.org/17hiroba/photo_gallery/05_tsukaya/05_tsukaya.html


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