Chimeric repressor analysis identifies MYB87 as a possible regulator of morphogenesis via cell wall organization and remodeling in Arabidopsis

Fujiwara, Shigeru; Mitsuda, Nobutaka; Nakai, Yusuke; Kigoshi, Keiko; Suzuki, Kaoru; Ohme‐Takagi, Masaru

doi:10.1007/s10529-013-1451-8

Cited by 17 publications

(18 citation statements)

References 32 publications

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“…The largest ULN QTL, located on a tip of chromosome 2 harbored zap1 , shown to be allelic to ZmMADS3 , a transcription factor that influences maize internode number [ 69 ]. The EH and EH/PH co-localized QTL on chromosome 3, encompasses myb151 which is homologous to Arabidopsis AtMYB87 , the latter could suppress longitudinal elongation of multiple organs [ 70 ] that may contribute to plant dwarfing. The TBN QTL interval on chromosome 10 includes a gene, sbp21 , homologous to Arabidopsis AtSPL10 , which controls shoot-associated lateral organs development [ 71 ], may contribute to maize tassel branching.…”

Section: Resultsmentioning

confidence: 99%

Identification of minor effect QTLs for plant architecture related traits using super high density genotyping and large recombinant inbred population in maize (Zea mays)

Wang

Liu

et al. 2018

BMC Plant Biol

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BackgroundPlant Architecture Related Traits (PATs) are of great importance for maize breeding, and mainly controlled by minor effect quantitative trait loci (QTLs). However, cloning or even fine-mapping of minor effect QTLs is very difficult in maize. Theoretically, large population and high density genetic map can be helpful for increasing QTL mapping resolution and accuracy, but such a possibility have not been actually tested.ResultsHere, we employed a genotyping-by-sequencing (GBS) strategy to construct a linkage map with 16,769 marker bins for 1021 recombinant inbred lines (RILs). Accurately mapping of well studied genes P1, pl1 and r1 underlying silk color demonstrated the map quality. After QTL analysis, a total of 51 loci were mapped for six PATs. Although all of them belong to minor effect alleles, the lengths of the QTL intervals, with a minimum and median of 1.03 and 3.40 Mb respectively, were remarkably reduced as compared with previous reports using smaller size of population or small number of markers. Several genes with known function in maize were shown to be overlapping with or close neighboring to these QTL peaks, including na1, td1, d3 for plant height, ra1 for tassel branch number, and zfl2 for tassel length. To further confirm our mapping results, a plant height QTL, qPH1a, was verified by an introgression lines (ILs).ConclusionsWe demonstrated a method for high resolution mapping of minor effect QTLs in maize, and the resulted comprehensive QTLs for PATs are valuable for maize molecular breeding in the future.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1233-5) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Identification of minor effect QTLs for plant architecture related traits using super high density genotyping and large recombinant inbred population in maize (Zea mays)

Wang

Liu

et al. 2018

BMC Plant Biol

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“…MYB38 belongs to the subgroup 14 of the big R2R3-MYB family in A. thaliana (Stracke et al, 2001). Despite the fact that the R2R3-MYB family mainly regulates either secondary metabolism or cell fate and organ differentiation (Stracke et al, 2001), all the members of the subgroup 14 (MYB36, MYB37, MYB38, MYB68, MYB84 and MYB87) are exclusively regulating cell fate and organ formation (Feng et al, 2004;Fujiwara et al, 2014;Liberman et al, 2015;Muller et al, 2006).…”

Section: Identification Of Genes Involved In Dark Gland Development Amentioning

confidence: 99%

Discovery of key regulators of dark gland development and hypericin biosynthesis in St. John's Wort (Hypericum perforatum)

Rizzo

Altschmied

Stark

et al. 2019

Plant Biotechnology Journal

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Summary Hypericin is a molecule of high pharmaceutical importance that is synthesized and stored in dark glands (DGs) of St. John's Wort (Hypericum perforatum). Understanding which genes are involved in dark gland development and hypericin biosynthesis is important for the development of new Hypericum extracts that are highly demanded for medical applications. We identified two transcription factors whose expression is strictly synchronized with the differentiation of DGs. We correlated the content of hypericin, pseudohypericin, endocrocin, skyrin glycosides and several flavonoids with gene expression and DG development to obtain a revised model for hypericin biosynthesis. Here, we report for the first time genotypes which are polymorphic for the presence/total absence (G+/G−) of DGs in their placental tissues (PTs). DG development was characterized in PTs using several microscopy techniques. Fourier transform infrared microscopy was established as a novel method to precisely locate polyaromatic compounds, such as hypericin, in plant tissues. In addition, we obtained transcriptome and metabolome profiles of unprecedented resolution in Hypericum. This study addresses for the first time the development of dark glands and identifies genes that constitute strong building blocks for the further elucidation of hypericin synthesis, its manipulation in plants, its engineering in microbial systems and its applications in medical research.

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“…This is also exemplified in the transgenic Arabidopsis line MYB87-SRDX, which has thicker stems accompanied both by changes in cell number and cell size ( Fig. 3B and Table 1) [15].…”

mentioning

confidence: 64%

“…, reproduced with permission from [15]). (C) Mutants that could potentially be 3 used to examine the influence of cross-sectional shape on stiffness include the oblong- (reproduced with permission from [19]).…”

mentioning

confidence: 99%

Hierarchies of plant stiffness

et al. 2016

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Plants must meet mechanical as well as physiological and reproductive requirements for survival. Management of internal and external stresses is achieved through their unique hierarchical architecture. Stiffness is determined by a combination of morphological (geometrical) and compositional variables that vary across multiple length scales ranging from the whole plant to organ, tissue, cell and cell wall levels. These parameters include, among others, organ diameter, tissue organization, cell size, density and turgor pressure, and the thickness and composition of cell walls. These structural parameters and their consequences on plant stiffness are reviewed in the context of work on stems of the genetic reference plant Arabidopsis thaliana (Arabidopsis), and the suitability of Arabidopsis as a model system for consistent investigation of factors controlling plant stiffness is put forward. Moving beyond Arabidopsis, the presence of morphological parameters causing stiffness gradients across length-scales leads to beneficial emergent properties such as increased load-bearing capacity and reversible actuation. Tailoring of plant stiffness for old and new purposes in agriculture and forestry can be achieved through bioengineering based on the knowledge of the morphological and compositional parameters of plant stiffness in combination with gene identification through the use of genetics.

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Chimeric repressor analysis identifies MYB87 as a possible regulator of morphogenesis via cell wall organization and remodeling in Arabidopsis

Cited by 17 publications

References 32 publications

Identification of minor effect QTLs for plant architecture related traits using super high density genotyping and large recombinant inbred population in maize (Zea mays)

Identification of minor effect QTLs for plant architecture related traits using super high density genotyping and large recombinant inbred population in maize (Zea mays)

Discovery of key regulators of dark gland development and hypericin biosynthesis in St. John's Wort (Hypericum perforatum)

Hierarchies of plant stiffness

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