Salt-induced transcription factor<i>MYB74</i>is regulated by the RNA-directed DNA methylation pathway in<i>Arabidopsis</i>

Xu, Rui; Wang, Yuhan; Zheng, Hao; Lu, Wenjing; Wu, Changai; Huang, Jinguang; Ke, Yan; Yang, Guodong; Zheng, Chengchao

doi:10.1093/jxb/erv312

Cited by 166 publications

(117 citation statements)

References 57 publications

Supporting

Mentioning

111

Contrasting

Order By: Relevance

“…It appears that this gene pair coordinates the production of aromatic monomers through the phenylpropanoid pathway, while at the same time activating aliphatic monomer production in fatty acid biosynthesis as well as the extracellular transport and polymerization of these monomers ( Figure 9). It is important to note that members of the neighboring clade of MYB transcription factors include (1) AtMYB16 and AtMYB106, both demonstrated previously to regulate cutin formation (Oshima et al, 2013); (2) AtMYB74 and AtMYB102, which have been found to be involved in the plant's response to wounding, salt, and osmotic stresses (Denekamp and Smeekens, 2003;Xu et al, 2015); and (3) AtMYB41, the recently identified stress suberin regulator (Kosma et al, 2014). Together with the classification of AtMYB107 and At-MYB9 as regulators of suberin, this clade appears to include plant surface regulators, with a particular association to osmotic stress.…”

Section: Discussionmentioning

confidence: 99%

MYB107 and MYB9 Homologs Regulate Suberin Deposition in Angiosperms

et al. 2016

View full text Add to dashboard Cite

Suberin, a polymer composed of both aliphatic and aromatic domains, is deposited as a rough matrix upon plant surface damage and during normal growth in the root endodermis, bark, specialized organs (e.g., potato [Solanum tuberosum] tubers), and seed coats. To identify genes associated with the developmental control of suberin deposition, we investigated the chemical composition and transcriptomes of suberized tomato (Solanum lycopersicum) and russet apple (Malus x domestica) fruit surfaces. Consequently, a gene expression signature for suberin polymer assembly was revealed that is highly conserved in angiosperms. Seed permeability assays of knockout mutants corresponding to signature genes revealed regulatory proteins (i.e., AtMYB9 and AtMYB107) required for suberin assembly in the Arabidopsis thaliana seed coat. Seeds of myb107 and myb9 Arabidopsis mutants displayed a significant reduction in suberin monomers and altered levels of other seed coat-associated metabolites. They also exhibited increased permeability, and lower germination capacities under osmotic and salt stress. AtMYB9 and AtMYB107 appear to synchronize the transcriptional induction of aliphatic and aromatic monomer biosynthesis and transport and suberin polymerization in the seed outer integument layer. Collectively, our findings establish a regulatory system controlling developmentally deposited suberin, which likely differs from the one of stressinduced polymer assembly recognized to date.

show abstract

Section: Discussionmentioning

confidence: 99%

MYB107 and MYB9 Homologs Regulate Suberin Deposition in Angiosperms

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Two types of siRNAs (21 and 24 nt) are derived from a pair of natural cis ‐antisense Δ 1 ‐pyrroline‐5‐carboxylate dehydrogenase ( P5CDH ) and SIMILAR TO RADICAL‐INDUCED CELL DEATH (RCD)‐ONE5 (SRO5) transcripts; these siRNAs control ROS production in response to salt stress (Borsani et al ., ). The 24‐nt siRNA level regulates the Arabidopsis v‐myb avian myeloblastosis viral oncogene homolog 7 (AtMYB7) transcription factor, which is a member of the R2R3‐MYB gene family, via the RdDM pathway in response to salt stress (Xu et al ., ). The miRNAs miR393, miR397b, and miR402 are induced by salt stress in Arabidopsis (Sunkar & Zhu, ).…”

Section: Metabolite and Cell Activity Responses To Salt Stressmentioning

confidence: 97%

Elucidating the molecular mechanisms mediating plant salt‐stress responses

2017

View full text Add to dashboard Cite

Contents Summary523I.Introduction523II.Sensing salt stress524III.Ion homeostasis regulation524IV.Metabolite and cell activity responses to salt stress527V.Conclusions and perspectives532Acknowledgements533References533 Summary Excess soluble salts in soil (saline soils) are harmful to most plants. Salt imposes osmotic, ionic, and secondary stresses on plants. Over the past two decades, many determinants of salt tolerance and their regulatory mechanisms have been identified and characterized using molecular genetics and genomics approaches. This review describes recent progress in deciphering the mechanisms controlling ion homeostasis, cell activity responses, and epigenetic regulation in plants under salt stress. Finally, we highlight research areas that require further research to reveal new determinants of salt tolerance in plants.

show abstract

“…For example, several heat stress‐responsive genes are dynamically regulated by RdDM pathway‐mediated DNA methylation (Popova et al 2013). The Arabidopsis transcription factor MYB74 is normally silenced by RdDM and is desilenced by salt stress treatments (Xu et al 2015).…”

Section: Profile Of Plant Epigenetic Mechanismsmentioning

confidence: 99%

Epigenetic regulation in plant abiotic stress responses

Chang

Jiang

et al. 2020

JIPB

297

225

View full text Add to dashboard Cite

In eukaryotic cells, gene expression is greatly influenced by the dynamic chromatin environment. Epigenetic mechanisms, including covalent modifications to DNA and histone tails and the accessibility of chromatin, create various chromatin states for stress-responsive gene expression that is important for adaptation to harsh environmental conditions. Recent studies have revealed that many epigenetic factors participate in abiotic stress responses, and various chromatin modifications are changed when plants are exposed to stressful environments. In this review, we summarize recent progress on the cross-talk between abiotic stress response pathways and epigenetic regulatory pathways in plants. Our review focuses on epigenetic regulation of plant responses to extreme temperatures, drought, salinity, the stress hormone abscisic acid, nutrient limitations and ultraviolet stress, and on epigenetic mechanisms of stress memory.

show abstract

Salt-induced transcription factorMYB74is regulated by the RNA-directed DNA methylation pathway inArabidopsis

Abstract: Highlight AtMYB74, a R2R3-MYB gene, is transcriptionally regulated through RdDM for response to salt stress. The accumulation of siRNA targeting to the AtMYB74 promoter region is essential for maintaining AtMYB74 expression.

Cited by 166 publications

References 57 publications

MYB107 and MYB9 Homologs Regulate Suberin Deposition in Angiosperms

MYB107 and MYB9 Homologs Regulate Suberin Deposition in Angiosperms

Elucidating the molecular mechanisms mediating plant salt‐stress responses

Epigenetic regulation in plant abiotic stress responses

Contact Info

Product

Resources

About