phytochrome of branching in arabidopsis plant

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The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana).

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Plants deficient in phytochrome B (phyB) exhibit a constitutive shade avoidance syndrome including reduced branching. Because auxin in the polar auxin transport stream (PATS) inhibits axillary bud outgrowth, its role in regulating the phyB branching phenotype was tested.

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Phytochrome Regulation of Branching in Arabidopsis Plant ...

Apr 05, 2010  Abstract. The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana).

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Phytochrome Regulation of Branching in Arabidopsis1[W][OA]

Arabidopsis, the negative effects of the phytochrome B mutation and of low red light:far-red light ratio on branching were largely due to reduced bud outgrowth capacity and an increased degree of correlative inhibition acting on the buds rather than

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Here, we show that in Arabidopsis, the negative effects of the phytochrome B mutation and of low red light:far-red light ratio on branching were largely due to reduced bud outgrowth capacity and ...

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Phytochrome B Promotes Branching in Arabidopsis by Suppressing Auxin Signaling1[W][OPEN] Srirama Krishna Reddy and Scott A. Finlayson* Department of Soil and Crop Sciences, Texas AM University and Texas AM AgriLife Research, College Station, Texas 77843 (S.K.R., S.A.F); Faculty of Molecular and Environmental Plant Sciences, Texas AM

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Phytochrome B Promotes Branching in Arabidopsis by

Phytochrome B Promotes Branching in Arabidopsis by Suppressing Auxin Signaling1[W][OPEN] Srirama Krishna Reddy and Scott A. Finlayson* Department of Soil and Crop Sciences, Texas AM University and Texas AM AgriLife Research, College Station, Texas 77843 (S.K.R., S.A.F); Faculty of Molecular and Environmental Plant Sciences, Texas AM

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Phytochrome regulation of branching in Arabidopsis.

The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana).

Get price

Phytochrome regulation of branching in Arabidopsis ...

The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana).

Get price

Phytochrome Regulation of Branching in Arabidopsis 10 ...

Apr 01, 2010  Phytochrome Regulation of Branching in Arabidopsis Phytochrome Regulation of Branching in Arabidopsis Scott A. Finlayson , Srirama R. Krishnareddy , Tesfamichael H. Kebrom , and Jorge J. Casal 2010-04-01 00:00:00 The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching.

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Phytochrome regulation of branching in Arabidopsis.

The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis ...

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REGULATION OF BRANCHING BY PHYTOCHROME B AND

branching. Phytochrome B (phyB) is especially important in sensing shade signals and loss of phyB function results in a constitutive shade avoidance phenotype, including reduced branching. While it has been anecdotally reported that phyB-deficient Arabidopsis branches less than wild type, a detailed study of the defects in the process is lacking.

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(PDF) Phytochrome B Promotes Branching in Arabidopsis by ...

Feb 03, 2014  Plants de ficient in phytochrome B (phyB) exhibit a constitutive shade. avoidance syndrome including reduced branching. Because auxin in

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Branching of the PIF3 regulatory network in Arabidopsis

Apr 01, 2012  Introduction. When Arabidopsis seedlings germinate in the underground darkness, a group of bHLH transcription factors called PIFs (phytochrome interacting factors) maintain an etiolated developmental program characterized by closed apical hooks, appressed cotyledons and fast hypocotyl growth to quickly reach the sunlight at the soil surface.

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Photosynthetic photon flux density and phytochrome B ...

Jul 05, 2011  Branching is regulated by environmental signals including phytochrome B (phyB)-mediated responses to the ratio of red to far red light. While the mechanisms associated with phytochrome regulation of branching are beginning to be elucidated, there is little information regarding other light signals, including photosynthetic photon flux density (PPFD) and how it influences phytochrome

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Phytochrome B represses Teosinte Branched1 expression and ...

Phytochrome regulation of branching in Arabidopsis. The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of ...

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Molecular mechanisms underlying phytochrome-controlled ...

Nov 19, 2019  Most phytochrome responses described in Arabidopsis are shared by other plant species. This includes regulation of germination, de-etiolation,

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Polymorphisms found in Brassica oleracea REVEILLE/LHY-CCA1 ...

Aug 24, 2021  In Arabidopsis rve 4 6 8 triple mutant, expression levels of negative regulator of anthocyanin biosynthesis under red light, Phytochrome-Interacting Factors 4 and 5, are elevated compared to wild-type plants (Gray et al. 2017; Liu et al. 2015).

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CONSTANS-LIKE 7 (COL7) Is Involved in Phytochrome B (phyB ...

Sep 01, 2014  Arabidopsis phytochrome B (phyB) is the major photoreceptor that senses the ratio of red to far-red light (R:FR) to regulate the shade-avoidance response (SAR). It has been hypothesized that altered homeostasis of phytohormones such as auxin and strigolactone is at least partially responsible for SAR, but the mechanism underlying phyB regulation of the hormonal change is not fully understood.

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Plant Developmental Responses to Hormonal, Genetic and ...

Su H, Abernathy SD, White RH, Finlayson SA. (2011) Photosynthetic photon flux density and phytochrome B interact to regulate branching in Arabidopsis. Plant Cell Environ 34: 1986- 1998. Progress 01/01/10 to 12/31/10 Outputs OUTPUTS: Activities A variety of experimentation was conducted during 2010. These included experiments in support of ...

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Phytochrome Regulation of Branching in Arabidopsis

The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis ...

Get price

Phytochrome regulation of branching in Arabidopsis ...

The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of branching responses in Arabidopsis (Arabidopsis thaliana).

Get price

Phytochrome B Promotes Branching in Arabidopsis by ...

Phytochrome B Promotes Branching in Arabidopsis by Suppressing Auxin Signaling1[w]I° N1 Srirama Krishna Reddy and Scott A. Finlayson* Department of Soil and Crop Sciences, Texas AM University and Texas AM AgriLife Research, College Station, Texas 77843 (S.K.R., S.A.F); Faculty of Molecular and Environmental Plant Sciences, Texas AM

Get price

Phytochrome Regulation of Branching in Arabidopsis 10 ...

Apr 01, 2010  Phytochrome Regulation of Branching in Arabidopsis Phytochrome Regulation of Branching in Arabidopsis Scott A. Finlayson , Srirama R. Krishnareddy , Tesfamichael H. Kebrom , and Jorge J. Casal 2010-04-01 00:00:00 The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching.

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REGULATION OF BRANCHING BY PHYTOCHROME AND

We analyzed the branching phenotype of Arabidopsis Columbia-60000 ecotype in response to different R:FR treatments and ... FR determines plant architecture and the branching phenotype and that bud outgrowth is regulated by the R:FR in a spatial and ... CHAPTER V IS PHYTOCHROME REGULATED BRANCHING MEDIATED .

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Does EID1 Aid the Fine-Tuning of Phytochrome A Signal ...

A mechanism for the fine-tuning of phytochrome A signaling in plants might have been determined recently through the elegant identification of a new genetic locus, EID1, involved in light signaling. The eid1 mutant was isolated by screening an ethyl methanesulfonate–mutagenized population harboring the Arabidopsis phyB-5 mutation ( Buche et ...

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Phytochrome B represses Teosinte Branched1 expression and ...

Phytochrome regulation of branching in Arabidopsis. The red light:far-red light ratio perceived by phytochromes controls plastic traits of plant architecture, including branching. Despite the significance of branching for plant fitness and productivity, there is little quantitative and mechanistic information concerning phytochrome control of ...

Get price

Molecular mechanisms underlying phytochrome-controlled ...

Nov 19, 2019  Most phytochrome responses described in Arabidopsis are shared by other plant species. This includes regulation of germination, de-etiolation,

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Phytochrome diversity in green plants and the origin of ...

hypotheses for seed-plant phytochromes based on their orthology with Arabidopsis phytochromes8. Phytochrome diversity in non-seed plants, however, is very poorly understood, with the limited available databeing derived from the Physcomitrella (moss) and Selaginella (lycophyte) genome projects9,10,andafew cloning studies11–15. The lack of a ...

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Phytochrome Signaling: Time to Tighten up the Loose Ends ...

Apr 06, 2015  Introduction. In higher plants, phytochromes (phys, meaning “plant color”) are the major photoreceptors for perceiving the red (R) and far-red (FR) spectrums (600–750 nm) of the terrestrial light, and play a fundamental role in regulating almost every aspect of plant growth and development, ranging from seed germination to seedling photomorphogenesis, stem elongation, branching ...

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Polymorphisms found in Brassica oleracea REVEILLE/LHY-CCA1 ...

Aug 24, 2021  In Arabidopsis rve 4 6 8 triple mutant, expression levels of negative regulator of anthocyanin biosynthesis under red light, Phytochrome-Interacting Factors 4 and 5, are elevated compared to wild-type plants (Gray et al. 2017; Liu et al. 2015).

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Integration of light and hormone signaling pathways in the ...

Apr 26, 2021  Kunihiro A, Yamashino T, Nakamichi N, Niwa Y, Nakanishi H, Mizuno T (2011) PHYTOCHROME-INTERACTING FACTOR 4 and 5 (PIF4 and PIF5) activate the Homeobox ATHB2 and auxin-inducible IAA29 genes in the coincidence mechanism underlying photoperiodic control of plant growth of Arabidopsis thaliana. Plant Cell Physiol 52:1315–1329.

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Phytochrome-interacting factors directly suppress MIR156 ...

Aug 24, 2017  Arabidopsis MIR156B overexpressing plants were reported to have more rosette leaves, increased branching (including axillary, quaternary, and quinary branches), prolonged expression of juvenile ...

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Amino acid polymorphisms in Arabidopsis phytochrome B ...

Feb 26, 2008  Plants have a sophisticated system for sensing and responding to their light environment. The light responses of populations and species native to different habitats show adaptive variation; understanding the mechanisms underlying photomorphogenic variation is therefore of significant interest. In Arabidopsis thaliana , phytochrome B (PHYB) is the dominant photoreceptor for red light and

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