Insights into the Diversification and Evolution of R2R3-MYB Transcription Factors in Plants

Jiang, Chen-Kun; Rao, Guang‐Yuan

doi:10.1104/pp.19.01082

Cited by 129 publications

(164 citation statements)

References 113 publications

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“…Chloroplastic marker regions were as in Supplemental Table 3. The MIKC C tree was subsampled from 1 KP (Leebens-Mack et al, 2019); the R2R3 MYB tree used data from respective genome repositories, the Azolla genome (Li et al, 2018) and Jiang & Rao, 2020. Reference genomes used to align Dual RNA sequences onto the A. filiculoides Galgenwaard strain are detailed in Supplemental Methods.…”

Section: Materials and Methods (1320) Plant Materials Growth Conditimentioning

confidence: 99%

“…The GAMYB TF clade arose before land plants evolved and before GA signaling (Aya et al, 2011;Bowman et al, 2017, Jiang & Rao, 2020. Azolla GAMYB induced under TL with far-red, therefore, likely function in RD by mediating cues perceived by the sporophyte into an ancestral gametophyte regulon.…”

Section: Phylogenetic Position Of Mikc C Tf Responsive During Azolla mentioning

confidence: 99%

“…Chara autralis (Ca), Chara braunii (Cb), Chara leptospora (Cl), Marchantia polymorpha (Mp), Selaginella moellendorfii (Sm), Azolla filiculoides (Azfi), ), Salvinia cuculata (Sc), Picea abies (Pa), Amborella trichopoda (Atri), Arabidopsis thaliana (At). Sequence names are color coded after the R2R3 MYB subfamilies defined in Jiang & Rao (2020). Fold change in response to FR was calculated by DESeq2, green stars mark significant changes with Padj <0.1.…”

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confidence: 99%

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Control of the Azolla symbiosis sexual reproduction: ferns to shed light on the origin of floral regulation?

Dijkhuizen

Tabatabaei

Brouwer

et al. 2020

Preprint

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SummaryRegulation of the transition from vegetative to spore-forming phases in ferns is largely unknown yet a pre-requisite for their domestication. External and endogenous cues regulating the formation of sporocarps were researched in Azolla ferns, that are heterosporous and constitute a symbiosis with the cyanobacteria Nostoc azollae.Once external cues were identified, small RNA and mRNA from eukaryotic and prokaryotic partners in the symbiosis were analyzed for differential accumulation upon transition to sexual reproduction.filiculoides fern sporocarp formation required far-red light (FR) and was suppressed by medium nitrogen; FR-induced sporocarps were viable in crosses that verified species attribution of Dutch strains but not those from Iran’s Anzali lagoon. FR-responsive transcripts encoded the Azolla MIKCC homologue of CMADS1, miRNA319-controlled GAMYB in the fern, ycf2 in chloroplasts, and transporters in N. azollae. Loci of conserved microRNA in the fern lineage included miR172, but FR only induced mirR529 and miR535, and reduced miR159 and miR319.The clade of the FR-responsive MIKCC radiated separately in ferns from the seed plant clade containing AtSOC1 and floral homeotic genes A, C, D and E, yet the data supports that regulons controlling seed plant flowering originate from the diploid to haploid phase transition in the common ancestor of seed plants and ferns.

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Section: Materials and Methods (1320) Plant Materials Growth Conditimentioning

confidence: 99%

Section: Phylogenetic Position Of Mikc C Tf Responsive During Azolla mentioning

confidence: 99%

mentioning

confidence: 99%

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Control of the Azolla symbiosis sexual reproduction: ferns to shed light on the origin of floral regulation?

Dijkhuizen

Tabatabaei

Brouwer

et al. 2020

Preprint

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“…The published transcription factors from different species were used to construct phylogenetic tree with homologous transcription factors in blueberry. According to the classi cation of MYB transcription factors [24] and the functions of MYB transcription factors, MYB transcription factors involved in anthocyanin synthesis of blueberry were identi ed (Fig. 5).…”

Section: Identi Cation Of Key Transcription Factors Involved In Anthomentioning

confidence: 99%

Transcriptome Analysis Revealed The Mechanism of Exogenous ABA Increasing Anthocyanins in Blueberry Fruit During Veraison

Han

Yan

Wang

et al. 2020

Preprint

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Background: Blueberry（Vaccinium Spp）is a popular healthy fruit all over the world. The health value of blueberry is mainly due to the fact that blueberry is rich in anthocyanins, which have a strong antioxidant capacity. However, due to the fact that blueberry is a non model plant, little is known about the structural genes and regulatory genes involved in the anthocyanin synthesis of blueberries. Previous studies have found that spraying abscisic acid at the late green stage of blueberry fruit can increase the content of anthocyanins. Based on the former results, the anthocyanin accumulation process of blueberry can be divided into six stages from late green stage to mature stage to analyze the anthocyanin synthesis mechanism. In order to identify the important genes in the anthocyanin synthesis process of blueberry, the transcriptome analysis was conducted to explore the key genes in blueberry anthocyanin synthesis process.Results: The results showed that ABA could increase the anthocyanin content of blueberry fruits during the veraison. The effect of ABA on blueberry fruit development was systematically analyzed by KEGG and GO. All structural genes and transcription factors (MYB, bHLH and WD40) involved in anthocyanin pathway were identified and their spatiotemporal expression patterns were analyzed. The expression of CHS, CHI, DFR and LDOX / ANS in ABA treated fruits was higher in S5-S6, which was consistent with the change of anthocyanins in fruits.In general, six MYB transcription factors, one bHLH transcription factor and four WD40 transcription factors under treatment were found to have significant changes in transcripts during fruit ripening. Conclusions: Our results suggest that VcMYBA should play a major role in the regulation of anthocyanin synthesis in ABA signaling. This result preliminarily explained the mechanism of ABA increasing anthocyanin content and improves the efficiency of industrial use of blueberry anthocyanins.

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“…Many plant-specific protein families, including the R2R3-MYB family, were believed to have played vital roles in facilitating this transition to land ( Feller et al, 2011 ; Zhao et al, 2019 ). Previous studies suggested MYB genes had polyphyletic origins ( Dubos et al, 2010 ; Bowman et al, 2017 ; Jiang and Rao, 2020 ; Liang et al, 2020 ), but the origin and evolutionary history of R2R3-MYBs are still not well understood due to the limited coverage of species in some lineages of green plants in these studies.…”

Section: Introductionmentioning

confidence: 99%

Origins and Stepwise Expansion of R2R3-MYB Transcription Factors for the Terrestrial Adaptation of Plants

et al. 2020

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The R2R3-MYB transcription factors play critical roles in various processes in embryophytes (land plants). Here, we identified genes encoding R2R3-MYB proteins from rhodophytes, glaucophytes, Chromista, chlorophytes, charophytes, and embryophytes. We classified the R2R3-MYB genes into three subgroups (I, II, and III) based on their evolutionary history and gene structure. The subgroup I is the most ancient group that includes members from all plant lineages. The subgroup II was formed before the divergence of charophytes and embryophytes. The subgroup III genes form a monophyletic group and only comprise members from land plants with conserved exon–intron structure. Each subgroup was further divided into multiple clades. The subgroup I can be divided into I-A, I-B, I-C, and I-D. The I-A, I-B, and I-C are the most basal clades that have originated before the divergence of Archaeplastida. The I-D with the II and III subgroups form a monophyletic group, containing only green plants. The II and III subgroups form another monophyletic group with Streptophyta only. Once on land, the subgroup III genes have experienced two rounds of major expansions. The first round occurred before the origin of land plants, and the second round occurred after the divergence of land plants. Due to significant gene expansion, the subgroup III genes have become the predominant group of R2R3-MYBs in land plants. The highly unbalanced pattern of birth and death evolution of R2R3-MYB genes indicates their important roles in the successful adaptation and massive radiation of land plants to occupy a multitude of terrestrial environments.

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Insights into the Diversification and Evolution of R2R3-MYB Transcription Factors in Plants

Cited by 129 publications

References 113 publications

Control of the Azolla symbiosis sexual reproduction: ferns to shed light on the origin of floral regulation?

Control of the Azolla symbiosis sexual reproduction: ferns to shed light on the origin of floral regulation?

Transcriptome Analysis Revealed The Mechanism of Exogenous ABA Increasing Anthocyanins in Blueberry Fruit During Veraison

Origins and Stepwise Expansion of R2R3-MYB Transcription Factors for the Terrestrial Adaptation of Plants

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