Non-inductive conditions expose the cryptic bract of flower phytomeres in Arabidopsis thaliana.

Non-inductive conditions expose the cryptic bract of flower phytomeres in Arabidopsis thaliana.
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非诱导条件暴露了拟南芥花植物植物的隐秘片。

DOI:
10.1080/15592324.2015.1010868
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发表时间:
2015
影响因子:
2.9
通讯作者:
Goodrich J
Goodrich J
中科院分区:
生物学4区
文献类型:
--
作者:
Müller-Xing R;Schubert D;Goodrich J

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地上植物的结构是由植物分生组织构成的,植物分生组织是一种同构单位,每个分生组织由茎节(节间)和叶片(叶节)组成。在拟南芥中,完全发育的花苞片即使在发育早期暂时呈现隐苞片(CB),也缺乏叶片。最近,我们证明了在无感短日条件下,CB变得更加突出。然而,Polycomb-group (Pc-G)蛋白抑制了MADS基因开花位点C (FLC),该基因编码开花位点T (FT)的抑制因子,从而阻止了MADS作为茎叶的完整生长。短营养期(SVP)的缺失也抑制了Pc-G缺失花梗基部的异位叶。本文提出了新的开花基因LEAFY (LFY)和TWIN SISTER of FT (TSF)的表达数据,并重新分析了Pc-G缺失植株的形态变化,表明CB和花分生组织(FM)的性状在时间上是分离的。
The aerial plant architecture is built by phytomeres which are metameric units, each composed of a stem segment (internode) and a leaf with axillary meristem (node). In Arabidopsis thaliana, fully developed flower phytomeres lack the leaf even if they temporarily exhibit a cryptic bract (CB) during early development. Recently, we demonstrated that the CB becomes more prominent under non-inductive short-day conditions. However, a full outgrowth as cauline leaf is prevented by Polycomb-group (Pc-G) proteins which silence the MADS gene FLOWERING LOCUS C (FLC) encoding a repressor of FLOWERING LOCUS T (FT). Also the loss of SHORT VEGETATIVE PHASE (SVP) supresses ectopic leaves at the base of Pc-G deficient pedicels. Here we present new expression data of flowering genes LEAFY (LFY) and TWIN SISTER OF FT (TSF) and the re-analysis of morphological changes in Pc-G deficient plants suggesting that the specifications of CB and floral meristem (FM) are separated in time.
DOI: 10.1105/tpc.114.123323
发表时间: 2014-06-01
期刊: PLANT CELL
影响因子: 11.6
作者:
Mueller-Xing, Ralf;Clarenz, Oliver;Schubert, Daniel
通讯作者: Schubert, Daniel
DOI: 10.1101/gad.373506
发表时间: 2006-04-01
影响因子: 10.5
作者:
Searle, I;He, YH;Coupland, G
通讯作者: Coupland, G
DOI: 10.1242/dev.02774
发表时间: 2007-03-15
期刊: DEVELOPMENT
影响因子: 4.6
作者:
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通讯作者: Laufs, Patrick
DOI: 10.1046/j.1365-313x.1998.00260.x
发表时间: 1998-09-01
期刊: PLANT JOURNAL
影响因子: 7.2
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发表时间: 2011-05-01
期刊: ANNALS OF BOTANY
影响因子: 4.2
作者:
Pouteau, Sylvie;Albertini, Catherine
通讯作者: Albertini, Catherine