Rice Cytokinin GATA Transcription Factor1 Regulates Chloroplast Development and Plant Architecture

Hudson, Darryl; Guevara, David; Hand, Andrew; Xu, Zhenhua; Hao, Lixin; Chen, Xi; Zhu, Tong; Bi, Yong‐Mei; Rothstein, Steven J.

doi:10.1104/pp.113.217265

Cited by 106 publications

(92 citation statements)

References 85 publications

(126 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Arabidopsis, cytokinin acting through ARR1 increases SHY/IAA3 expression in root meristems (Peng et al, 2013). Increased expression of CGA1 mediates activation of genes involved in chloroplast development in rice (Hudson et al, 2013). Genes involved in chloroplast development including several genes encoding LHCII show higher expression in buds of wild-type plants by 8 DAP, as would be expected after increased expression of CGA1 (data not shown).…”

Section: Induction Of Genes For Sweet Sugar Transport and Cwinvs Durisupporting

confidence: 51%

Transcriptome Profiling of Tiller Buds Provides New Insights into PhyB Regulation of Tillering and Indeterminate Growth in Sorghum

Kebrom

Mullet

2016

Plant Physiol.

View full text Add to dashboard Cite

Phytochrome B (phyB) enables plants to modify shoot branching or tillering in response to varying light intensities and ratios of red and far-red light caused by shading and neighbor proximity. Tillering is inhibited in sorghum genotypes that lack phytochrome B (58M, phyB-1) until after floral initiation. The growth of tiller buds in the first leaf axil of wild-type (100M, PHYB) and phyB-1 sorghum genotypes is similar until 6 d after planting when buds of phyB-1 arrest growth, while wild-type buds continue growing and develop into tillers. Transcriptome analysis at this early stage of bud development identified numerous genes that were up to 50-fold differentially expressed in wild-type/phyB-1 buds. Up-regulation of terminal flower1, GA2oxidase, and TPPI could protect axillary meristems in phyB-1 from precocious floral induction and decrease bud sensitivity to sugar signals. After bud growth arrest in phyB-1, expression of dormancy-associated genes such as DRM1, GT1, AF1, and CKX1 increased and ENOD93, ACCoxidase, ARR3/6/9, CGA1, and SHY2 decreased. Continued bud outgrowth in wild-type was correlated with increased expression of genes encoding a SWEET transporter and cell wall invertases. The SWEET transporter may facilitate Suc unloading from the phloem to the apoplast where cell wall invertases generate monosaccharides for uptake and utilization to sustain bud outgrowth. Elevated expression of these genes was correlated with higher levels of cytokinin/sugar signaling in growing buds of wild-type plants.

show abstract

Section: Induction Of Genes For Sweet Sugar Transport and Cwinvs Durisupporting

confidence: 51%

Transcriptome Profiling of Tiller Buds Provides New Insights into PhyB Regulation of Tillering and Indeterminate Growth in Sorghum

Kebrom

Mullet

2016

Plant Physiol.

View full text Add to dashboard Cite

show abstract

“…) and cytokinin GATA Transcription Factor 1 in rice apparently regulates chloroplast development (Hudson et al . ). Finally, supra‐optimal cytokinin levels cause a burst of hydrogen peroxide in chloroplasts that eventually results in cell death (Novák et al .…”

Section: Discussionmentioning

confidence: 97%

Cytokinin modulates proteomic, transcriptomic and growth responses to temperature shocks in Arabidopsis

Černý

Jedelský

Novák

et al. 2014

Plant Cell & Environment

View full text Add to dashboard Cite

As sessile organisms, plants must sense environmental conditions and adjust their growth and development processes accordingly, through adaptive responses regulated by various internal factors, including hormones. A key environmental factor is temperature, but temperature-sensing mechanisms are not fully understood despite intense research. We investigated proteomic responses to temperature shocks (15 min cold or heat treatments) with and without exogenous applications of cytokinin in Arabidopsis. Image and mass spectrometric analysis of the two-dimensionally separated proteins detected 139 differentially regulated spots, in which 148 proteins were identified, most of which have not been previously linked to temperature perception. More than 70% of the temperature-shock response proteins were modulated by cytokinin, mostly in a similar manner as heat shock. Data mining of previous transcriptomic datasets supported extensive interactions between temperature and cytokinin signalling. The biological significance of this finding was tested by assaying an independent growth response of Arabidopsis seedlings to heat stress: hypocotyl elongation. This response was strongly inhibited in mutants with deficiencies in cytokinin signalling or endogenous cytokinin levels. Thus, cytokinins may directly participate in heat signalling in plants. Finally, large proportions of both temperature-shock and cytokinin responsive proteomes co-localize to the chloroplast, which might therefore host a substantial proportion of the temperature response machinery.

show abstract

“…Cytokinins stimulate chloroplast development and chlorophyll biosynthesis (Hudson et al, 2013) and increase the rate of photosynthesis (Sakamoto et al, 2006). Several cytokininrelated genes were repressed under both HLB and puffing disorder; they may regulate the common induced responses that altered source-sink communications, and thus, fruit development.…”

Section: Hormonal Crosstalk Regulation In Response To Citrus Peel Strmentioning

confidence: 99%

Stress responses in citrus peel: Comparative analysis of host responses to Huanglongbing disease and puffing disorder

Martinelli

Ibáñez

Reagan

et al. 2015

Scientia Horticulturae

View full text Add to dashboard Cite

Rice Cytokinin GATA Transcription Factor1 Regulates Chloroplast Development and Plant Architecture

Cited by 106 publications

References 85 publications

Transcriptome Profiling of Tiller Buds Provides New Insights into PhyB Regulation of Tillering and Indeterminate Growth in Sorghum

Transcriptome Profiling of Tiller Buds Provides New Insights into PhyB Regulation of Tillering and Indeterminate Growth in Sorghum

Cytokinin modulates proteomic, transcriptomic and growth responses to temperature shocks in Arabidopsis

Stress responses in citrus peel: Comparative analysis of host responses to Huanglongbing disease and puffing disorder

Contact Info

Product

Resources

About