BES1 regulates the localization of the brassinosteroid receptor BRL3 within the provascular tissue of the Arabidopsis primary root

Salazar-Henao, Jorge E.; Lehner, Reinhard; Betegón‐Putze, Isabel; Vilarrasa-Blasi, Josep; Caño‐Delgado, Ana I.

doi:10.1093/jxb/erw258

Cited by 38 publications

(28 citation statements)

References 62 publications

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“…As expected, mutants in the major brassinosteroid receptor, BRI1, have similar defects in the vasculature. Analysis of the vascular cell types in a weak BRI1 mutant, bri1-5, revealed that there were also fewer xylem cells and more phloem [7]. However, several other receptors related to BRI1 might also be expected to function in vascular development since they also bind steroids.…”

Section: Role For Brassinosteroids In Vascular Development From Arabimentioning

confidence: 99%

“…Two receptors, BRL1 and BRL3, are functional BR receptors based on two criteria: (1) BRL1 and BRL3 are able to bind 3H Brassinolide in an in vivo assay, and (2) BRL1 and BRL3 coding sequences could replace BRI1 sequences and fully rescue a weak bri1 mutant. BRL1 and BRL3 would be predicted to function in vascular development as both receptors were expressed in vascular cells in roots and leaves [7].…”

Section: Role For Brassinosteroids In Vascular Development From Arabimentioning

confidence: 99%

“…Key breakthroughs in the timeline of research on brassinosteroids [1][2][3][4][5][6][7][8][9][10][11]. …”

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confidence: 99%

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The Control of Cell Expansion, Cell Division, and Vascular Development by Brassinosteroids: A Historical Perspective

Honey

Tax

2020

IJMS

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Steroid hormones are important signaling molecules in plants and animals. The plant steroid hormone brassinosteroids were first isolated and characterized in the 1970s and have been studied since then for their functions in plant growth. Treatment of plants or plant cells with brassinosteroids revealed they play important roles during diverse developmental processes, including control of cell expansion, cell division, and vascular differentiation. Molecular genetic studies, primarily in Arabidopsis thaliana, but increasingly in many other plants, have identified many genes involved in brassinosteroid biosynthesis and responses. Here we review the roles of brassinosteroids in cell expansion, cell division, and vascular differentiation, comparing the early physiological studies with more recent results of the analysis of mutants in brassinosteroid biosynthesis and signaling genes. A few representative examples of other molecular pathways that share developmental roles with brassinosteroids are described, including pathways that share functional overlap or response components with the brassinosteroid pathway. We conclude by briefly discussing the origin and conservation of brassinosteroid signaling.

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Section: Role For Brassinosteroids In Vascular Development From Arabimentioning

confidence: 99%

Section: Role For Brassinosteroids In Vascular Development From Arabimentioning

confidence: 99%

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The Control of Cell Expansion, Cell Division, and Vascular Development by Brassinosteroids: A Historical Perspective

Honey

Tax

2020

IJMS

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“…In the present study, the expression of ZmBES1/BZR1-5 enhanced the salt and drought tolerance in transgenic Arabidopsis in a bes1-D background. The transgenic lines showed higher fresh weight, developed roots as well as lower MDA content and REL in transgenic Arabidopsis (Figures 3−5), probably due to BES1/BZR1s regulating target gene expression in root apex cells, resulting in the control of root elongation and response to warmth [47,48]. As is well known, plants can respond to soilborne stresses, including salinity and water deficit, by adjusting the root system architecture [7,8].…”

Section: Discussionmentioning

confidence: 93%

Maize ZmBES1/BZR1-5 Decreases ABA Sensitivity and Confers Tolerance to Osmotic Stress in Transgenic Arabidopsis

Sun

et al. 2020

IJMS

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The BRI1-EMS suppressor 1 (BES1)/brassinazole-resistant 1 (BZR1) transcription factors, key components in the brassinosteroid signaling pathway, play pivotal roles in plant growth and development. However, the function of BES1/BZR1 in crops during stress response remains poorly understood. In the present study, we characterized ZmBES1/BZR1-5 from maize, which was localized to the nucleus and was responsive to abscisic acid (ABA), salt and drought stresses. Heterologous expression of ZmBES1/BZR1-5 in transgenic Arabidopsis resulted in decreased ABA sensitivity, facilitated shoot growth and root development, and enhanced salt and drought tolerance with lower malondialdehyde (MDA) content and relative electrolyte leakage (REL) under osmotic stress. The RNA sequencing (RNA-seq) analysis revealed that 84 common differentially expressed genes (DEGs) were regulated by ZmBES1/BZR1-5 in transgenic Arabidopsis. Subsequently, gene ontology and KEGG pathway enrichment analyses showed that the DEGs were enriched in response to stress, secondary metabolism and metabolic pathways. Furthermore, 30 DEGs were assigned to stress response and possessed 2–15 E-box elements in their promoters, which could be potentially recognized and bound by ZmBES1/BZR1-5. Taken together, our results reveal that the ZmBES1/BZR1-5 transcription factor positively regulates salt and drought tolerance by binding to E-box to induce the expression of downstream stress-related genes. Therefore, our study contributes to the better understanding of BES1/BZR1 function in the stress response of plants.

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“…The functions of the BES/BZR, CCAAT-HAP5 and mTERF families significantly differ from each other. The BES/BZR family is important in brassinosteroid signaling, which regulates stem cell quiescence in root stem cells [ 78 , 79 ]. CCAAT-HAP5 TFs, also known as NF-Y subunit C (NF-YC), regulate light-mediated development [ 80 ].…”

Section: Resultsmentioning

confidence: 99%

A compendium of transcription factor and Transcriptionally active protein coding gene families in cowpea (Vigna unguiculata L.)

2017

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BackgroundCowpea (Vigna unguiculata (L.) Walp.) is the most important food and forage legume in the semi-arid tropics of sub-Saharan Africa where approximately 80% of worldwide production takes place primarily on low-input, subsistence farm sites. Among the major goals of cowpea breeding and improvement programs are the rapid manipulation of agronomic traits for seed size and quality and improved resistance to abiotic and biotic stresses to enhance productivity. Knowing the suite of transcription factors (TFs) and transcriptionally active proteins (TAPs) that control various critical plant cellular processes would contribute tremendously to these improvement aims.ResultsWe used a computational approach that employed three different predictive pipelines to data mine the cowpea genome and identified over 4400 genes representing 136 different TF and TAP families. We compare the information content of cowpea to two evolutionarily close species common bean (Phaseolus vulgaris), and soybean (Glycine max) to gauge the relative informational content. Our data indicate that correcting for genome size cowpea has fewer TF and TAP genes than common bean (4408 / 5291) and soybean (4408/ 11,065). Members of the GROWTH-REGULATING FACTOR (GRF) and Auxin/indole-3-acetic acid (Aux/IAA) gene families appear to be over-represented in the genome relative to common bean and soybean, whereas members of the MADS (Minichromosome maintenance deficient 1 (MCM1), AGAMOUS, DEFICIENS, and serum response factor (SRF)) and C2C2-YABBY appear to be under-represented. Analysis of the AP2-EREBP APETALA2-Ethylene Responsive Element Binding Protein (AP2-EREBP), NAC (NAM (no apical meristem), ATAF1, 2 (Arabidopsis transcription activation factor), CUC (cup-shaped cotyledon)), and WRKY families, known to be important in defense signaling, revealed changes and phylogenetic rearrangements relative to common bean and soybean that suggest these groups may have evolved different functions.ConclusionsThe availability of detailed information on the coding capacity of the cowpea genome and in particular the various TF and TAP gene families will facilitate future comparative analysis and development of strategies for controlling growth, differentiation, and abiotic and biotic stress resistances of cowpea.Electronic supplementary materialThe online version of this article (10.1186/s12864-017-4306-1) contains supplementary material, which is available to authorized users.

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BES1 regulates the localization of the brassinosteroid receptor BRL3 within the provascular tissue of the Arabidopsis primary root

Abstract: HighlightBrassinosteroid-regulated transcription factor BES1 targets the BRL3 receptor gene and finely modulates its transcription in the vascular and stem cells of the Arabidopsis primary root.

Cited by 38 publications

References 62 publications

The Control of Cell Expansion, Cell Division, and Vascular Development by Brassinosteroids: A Historical Perspective

The Control of Cell Expansion, Cell Division, and Vascular Development by Brassinosteroids: A Historical Perspective

Maize ZmBES1/BZR1-5 Decreases ABA Sensitivity and Confers Tolerance to Osmotic Stress in Transgenic Arabidopsis

A compendium of transcription factor and Transcriptionally active protein coding gene families in cowpea (Vigna unguiculata L.)

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