Roles of lignin biosynthesis and regulatory genes in plant development

Yoon, Jinmi; Choi, Heebak; An, Gynheung

doi:10.1111/jipb.12422

Cited by 175 publications

(156 citation statements)

References 93 publications

(153 reference statements)

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“…A number of NAC and MYB transcription factors were proved or suggested to be involved in lignification (Nakano et al 2015;Umezawa 2010;Ye and Zhong 2015;Yoon et al 2015). For example, AtNACs such as AtNST1, AtNST2, AtVND6, AtVND7, and AtSND1, and AtMYBs such as AtMYB46 and AtMYB83 were found to be located in upstream steps of transcriptional network for secondary cell wall formation (Nakano et al 2015;Ye and Zhong 2015;Yoon et al 2015).…”

Section: Lignin Upregulation By Myb Genesmentioning

confidence: 99%

“…For example, AtNACs such as AtNST1, AtNST2, AtVND6, AtVND7, and AtSND1, and AtMYBs such as AtMYB46 and AtMYB83 were found to be located in upstream steps of transcriptional network for secondary cell wall formation (Nakano et al 2015;Ye and Zhong 2015;Yoon et al 2015). Heterologous expression of these upstream regulatory genes in rice affects biosynthesis of all cell wall components, resulting in severe modification of the cell wall formation and eventually growth of transformants.…”

Section: Lignin Upregulation By Myb Genesmentioning

confidence: 99%

“…Various MYB transcription factor genes, comprising a large family of plant transcriptional factors, have been reported to directly or indirectly regulate the expression of lignin biosynthetic genes in many plant species (Nakano et al 2015;Ye and Zhong 2015;Yoon et al 2015). Herein, we describe the generation of transgenic rice plants overexpressing five Arabidopsis and one rice MYB genes under the control of the Cauliflower mosaic virus (CaMV) 35S promoter to represent the concept of lignin upregulation.…”

Section: Introductionmentioning

confidence: 99%

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MYB-mediated upregulation of lignin biosynthesis in <i>Oryza sativa</i> towards biomass refinery

Koshiba

Yamamoto

Tobimatsu

et al. 2017

Plant Biotechnology

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Lignin encrusts lignocellulose polysaccharides, and has long been considered an obstacle for the efficient use of polysaccharides during processes such as pulping and bioethanol fermentation. However, lignin is also a potential feedstock for aromatic products and is an important by-product of polysaccharide utilization. Therefore, producing biomass plant species exhibiting enhanced lignin production is an important breeding objective. Herein, we describe the development of transgenic rice plants with increased lignin content. Five Arabidopsis thaliana (Arabidopsis) and one Oryza sativa (rice) MYB transcription factor genes that were implicated to be involved in lignin biosynthesis were transformed into rice (O. sativa L. ssp. japonica cv. Nipponbare). Among them, three Arabidopsis MYBs (AtMYB55, AtMYB61, and AtMYB63) in transgenic rice T 1 lines resulted in culms with lignin content about 1.5-fold higher than that of control plants. Furthermore, lignin structures in AtMYB61-overexpressing rice plants were investigated by wet-chemistry and two-dimensional nuclear magnetic resonance spectroscopy approaches. Our data suggested that heterologous expression of AtMYB61 in rice increased lignin content mainly by enriching syringyl units as well as p-coumarate and tricin moieties in the lignin polymers. We contemplate that this strategy is also applicable to lignin upregulation in large-sized grass biomass plants, such as Sorghum, switchgrass, Miscanthus and Erianthus.

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Section: Lignin Upregulation By Myb Genesmentioning

confidence: 99%

Section: Lignin Upregulation By Myb Genesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

MYB-mediated upregulation of lignin biosynthesis in <i>Oryza sativa</i> towards biomass refinery

Koshiba

Yamamoto

Tobimatsu

et al. 2017

Plant Biotechnology

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“…However, SH5 is expressed preferentially in the IM (Yoon et al, 2015). Therefore, the OSH15-SH5 TALE-HD complex appears to repress lignin biosynthesis specifically in the IM during the process of internode development.…”

Section: Internode Development Is Controlled By Osh15mentioning

confidence: 99%

KNOX Protein OSH15 Induces Grain Shattering by Repressing Lignin Biosynthesis Genes

et al. 2017

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Seed shattering is an agronomically important trait. Two major domestication factors are responsible for this: qSH1 and SH5. Whereas qSH1 functions in cell differentiation in the abscission zone (AZ), a major role of SH5 is the repression of lignin deposition. We have determined that a KNOX protein, OSH15, also controls seed shattering. Knockdown mutations of OSH15 showed reduced seed-shattering phenotypes. Coimmunoprecipitation experiments revealed that OSH15 interacts with SH5 and qSH1, two proteins in the BELL homeobox family. In transgenic plants carrying the OSH15 promoter-GUS reporter construct, the reporter gene was preferentially expressed in the AZ during young spikelet development. The RNA in situ hybridization experiment also showed that OSH15 messenger RNAs were abundant in the AZ during spikelet development. Analyses of osh15 SH5-D double mutants showed that SH5 could not increase the degree of seed shattering when OSH15 was absent, indicating that SH5 functions together with OSH15. In addition to the seedshattering phenotype, osh15 mutants displayed dwarfism and accumulated a higher amount of lignin in internodes due to increased expression of the genes involved in lignin biosynthesis. Knockout mutations of CAD2, which encodes an enzyme for the last step in the monolignol biosynthesis pathway, caused an easy seed-shattering phenotype by reducing lignin deposition in the AZ. This indicated that the lignin level is an important determinant of seed shattering in rice (Oryza sativa). Chromatin immunoprecipitation assays demonstrated that both OSH15 and SH5 interact directly with CAD2 chromatin. We conclude that OSH15 and SH5 form a dimer that enhances seed shattering by directly inhibiting lignin biosynthesis genes.

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“…In the past two decades, a number of genes associated with aliphatic or acyl-lipid-mediated male sterility have been identified (Li and Zhang, 2010;Ariizumi and Toriyama, 2011;Zhang et al, 2011;Jiang et al, 2013;Gong et al, 2015;Shi et al, 2015). However, our knowledge regarding the minor aromatic lipids in the anther cuticle and pollen wall is rather limited (Yoon et al, 2015); for example, how the aliphatic domain interlinks with the aromatic domain during the formation of the anther cuticle and pollen sporopollenin remains unknown.…”

mentioning

confidence: 99%

Defective Pollen Wall 2 (DPW2) Encodes an Acyl Transferase Required for Rice Pollen Development

Xu¹,

Shi

Rautengarten

et al. 2016

Plant Physiol.

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Aliphatic and aromatic lipids are both essential structural components of the plant cuticle, an important interface between the plant and environment. Although cross links between aromatic and aliphatic or other moieties are known to be associated with the formation of leaf cutin and root and seed suberin, the contribution of aromatic lipids to the biosynthesis of anther cuticles and pollen walls remains elusive. In this study, we characterized the rice (Oryza sativa) male sterile mutant, defective pollen wall 2 (dpw2), which showed an abnormal anther cuticle, a defective pollen wall, and complete male sterility. Compared with the wild type, dpw2 anthers have increased amounts of cutin and waxes and decreased levels of lipidic and phenolic compounds. DPW2 encodes a cytoplasmically localized BAHD acyltransferase. In vitro assays demonstrated that recombinant DPW2 specifically transfers hydroxycinnamic acid moieties, using v-hydroxy fatty acids as acyl acceptors and hydroxycinnamoyl-CoAs as acyl donors. Thus, The cytoplasmic hydroxycinnamoyl-CoA:v-hydroxy fatty acid transferase DPW2 plays a fundamental role in male reproduction via the biosynthesis of key components of the anther cuticle and pollen wall.In flowering plants, male reproductive development is a complex biological event that is essential to the survival and reproduction of the species. One distinctive feature of plant male development is the formation of the stamen, which consists of the anther and the supporting filament. The anther is composed of somatic anther wall layers and microspore mother cells (MMCs), which produces pollen grains via meiosis followed by two rounds of mitosis. After anther morphogenesis is complete, four centric layers are formed in the anther wall: the epidermis, endothecium, middle layer, and tapetum (

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Roles of lignin biosynthesis and regulatory genes in plant development

Cited by 175 publications

References 93 publications

MYB-mediated upregulation of lignin biosynthesis in <i>Oryza sativa</i> towards biomass refinery

MYB-mediated upregulation of lignin biosynthesis in <i>Oryza sativa</i> towards biomass refinery

KNOX Protein OSH15 Induces Grain Shattering by Repressing Lignin Biosynthesis Genes

Defective Pollen Wall 2 (DPW2) Encodes an Acyl Transferase Required for Rice Pollen Development

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