The Rice R2R3-MYB Transcription Factor OsMYB55 Is Involved in the Tolerance to High Temperature and Modulates Amino Acid Metabolism

El-Kereamy, Ashraf; Bi, Yong; Ranathunge, Kosala; Beatty, Perrin H.; Good, Allen G.; Rothstein, Steven J.

doi:10.1371/journal.pone.0052030

Cited by 176 publications

(104 citation statements)

References 54 publications

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“…Similarly, El-kereamy et al (2012) studied the rice R2R3-MYB transcription factor OsMYB55 and concluded that overexpression of OsMYB55 improved rice plant tolerance to high temperature which was associated with enhanced amino acid metabolism through transcription activation. Liao et al (2008) identified 156 GmMYB genes in soyabean (Glycine max) of which the expression of 43 genes changed on treatment with ABA, salt, drought and/or cold stress.…”

Section: Abiotic Stressmentioning

confidence: 99%

MYB transcription factor genes as regulators for plant responses: an overview

Ambawat

Sharma

Yadav

et al. 2013

Physiol Mol Biol Plants

822

544

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Regulation of gene expression at the level of transcription controls many crucial biological processes. Transcription factors (TFs) play a great role in controlling cellular processes and MYB TF family is large and involved in controlling various processes like responses to biotic and abiotic stresses, development, differentiation, metabolism, defense etc. Here, we review MYB TFs with particular emphasis on their role in controlling different biological processes. This will provide valuable insights in understanding regulatory networks and associated functions to develop strategies for crop improvement.

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Section: Abiotic Stressmentioning

confidence: 99%

MYB transcription factor genes as regulators for plant responses: an overview

Ambawat

Sharma

Yadav

et al. 2013

Physiol Mol Biol Plants

822

544

View full text Add to dashboard Cite

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“…In warm day-and cool night-induced spikes, specific transcription factors encoding NAC, MYB and ARF proteins were obtained. These proteins also participated in flower organ development (Sablowski and Meyerowitz, 1998), amino acid metabolism (ElKereamy et al, 2012), flavonoid biosynthesis (Nakatsuka et al, 2012), and red fruit-flesh phenotypes (Chagné et al, 2013), as well as response to different biotic and abiotic stresses (El-Kereamy et al, 2012;Li et al, 2012b). Compared with the expression levels in juvenile apical leaves, the accumulated transcripts of NAC (FS449) and R2R3-like MYB (FS789) were higher in all spikes tested, while the accumulated transcripts of ARF (FS899) were lower in early and later stages of spikes (Figure 1).…”

Section: Genes Involved In Transcriptional Regulationmentioning

confidence: 99%

Identification of warm day and cool night conditions induced flowering-related genes in a Phalaenopsis orchid hybrid by suppression subtractive hybridization

Zhu

et al. 2014

Genet. Mol. Res.

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ABSTRACT. The influence of warm day and cool night conditions on induction of spikes in Phalaenopsis orchids has been studied with respect to photosynthetic efficiency, metabolic cycles and physiology. However, molecular events involved in spike emergence induced by warm day and cool night conditions are not clearly understood. We examined gene expression induced by warm day and cool night conditions in the Phalaenopsis hybrid Fortune Saltzman through suppression subtractive hybridization, which allowed identification of flowering-related genes in warm day and cool night conditions in spikes and leaves at vegetative phase grown under warm daily temperatures. In total, 450 presumably regulated expressed sequence tags (ESTs) were identified and classified into functional categories, including metabolism, development, transcription factor, signal transduction, transportation, cell defense, and stress. Furthermore, database comparisons revealed a notable number of Phalaenopsis hybrid Fortune Saltzman ESTs that matched genes with unknown function. The expression profiles of 24 genes (from different functional categories) have been confirmed by quantitative real-time PCR in induced spikes and juvenile apical leaves. The results of the real-time PCR showed that, compared to the vegetative apical leaves, the transcripts of genes encoding flowering locus T, AP1, AP2, KNOX1, knotted1-like homeobox protein, R2R3-like MYB, adenosine kinase 2, S-adenosylmethionine synthetase, dihydroflavonol 4-reductase, and naringenin 3-dioxygenase accumulated significantly higher levels, and genes encoding FCA, retrotransposon protein Ty3 and C3HC4-type RING finger protein accumulated remarkably lower levels in spikes of early developmental stages. These results suggested that the genes of two expression changing trends may play positive and negative roles in the early floral transition of Phalaenopsis orchids. In conclusion, spikes induced by warm day and cool night conditions were complex in Phalaenopsis orchids; nevertheless, several molecular flowering pathway-related genes were found. The acquired data form the basis for a molecular understanding of spike induction by warm day and cool night conditions in Phalaenopsis orchids.

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“…OsMYB1R1 is the first rice MYB family gene identified to function in flowering time MYB TFs in rice mainly function in biotic and abiotic stress [43][44][45][46][47][48], secondary wall biosynthesis [49,50], . Tissue-specific expression patterns of OsMYB1R1 (means AE SD, n = 3).…”

Section: Discussionmentioning

confidence: 99%

Overexpression of OsMYB1R1–VP64 fusion protein increases grain yield in rice by delaying flowering time

Wang

Zhu

et al. 2016

FEBS Letters

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Edited by Ulf-Ingo Fl€ ugge VP64 is widely used as a transcriptional activator to investigate the biological function of genes, but its potential for application in genetic improvement of crops has not been fully investigated. Here, we characterized an OsMYB1R1-VP64 fusion protein that enhanced the grain yield of rice cultivar 'Kita-ake' by 35%. OsMYB1R1-VP64 regulated grain yield of transgenic plants mainly by extending the vegetative growth stage. Further analysis indicated that OsMYB1R1-VP64 delayed flowering by down-regulating expression of Heading date 3a (Hd3a) and RICE FLOWERING LOCUST 1 (RFT1) through repression of Early heading date 1 (Ehd1). The expression pattern of OsMYB1R1 was constitutive and rhythmically controlled. OsMYB1R1 protein had transcriptional activation activity and was localized to the nucleus. Our findings suggest that the OsMYB1R1-VP64 construct can be used to increase grain yield in rice.Keywords: flowering time; grain yield; VP64 Rice (Oryza sativa L.) is one of the most important food crops in the world, and is the staple food for more than 75% of the population in Asia [1]. With increasing population and decreasing arable land area more productive varieties are needed to address food shortages. The yield of a rice variety is determined by three important factors, namely effective panicle number per plant, grain number per panicle, and 1000-grain weight. These in turn are affected by genotype, environmental conditions (physical environment and agronomy), and their interactions. The key genetic factors are tiller number, flowering time, fertility, and seed setting rate. As the transition point, flowering time plays a key role in coordination between vegetative and reproductive growth [2]. Vegetative growth sets the basis of reproductive growth, which involves the formation, quality, and nutritive accumulation of reproductive organs. Flowering time also affects crop yield by enabling crops to gain the maximum benefit from the prevailing conditions [3,4]. Therefore, control and optimization of flowering time has been under intense scrutiny by breeders and agronomists for a long time [5].

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The Rice R2R3-MYB Transcription Factor OsMYB55 Is Involved in the Tolerance to High Temperature and Modulates Amino Acid Metabolism

Cited by 176 publications

References 54 publications

MYB transcription factor genes as regulators for plant responses: an overview

MYB transcription factor genes as regulators for plant responses: an overview

Identification of warm day and cool night conditions induced flowering-related genes in a Phalaenopsis orchid hybrid by suppression subtractive hybridization

Overexpression of OsMYB1R1–VP64 fusion protein increases grain yield in rice by delaying flowering time

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