MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis

Zhao, Yuanyuan; Lin, Shan‐Yang; Qiu, Zongbo; Cao, Dechang; Wen, Jia‐Long; Deng, Xin; Wang, Xiaohua; Lin, Jun; Li, Xiaojuan

doi:10.1104/pp.15.01011

Cited by 57 publications

(69 citation statements)

References 54 publications

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“…More recent observations, however, indicate that the Cu‐miRNAs participate in regulating various aspects of plant growth and development (Pilon ). It has been shown that miR397 and miR857, via targeting several Laccase genes, regulate lignin biosynthesis and secondary growth of vascular tissues in Arabidopsis (Wang et al ; Zhao et al ). In rice, miR397 has also been shown to influence panicle architecture and yield (Zhang et al ).…”

Section: Introductionmentioning

confidence: 99%

Overexpression of microRNA408 enhances photosynthesis, growth, and seed yield in diverse plants

Pan

Huang

Guo

et al. 2018

JIPB

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The ability of a plant to produce grain, fruit, or forage depends ultimately on photosynthesis. There have been few attempts, however, to study microRNAs, which are a class of endogenous small RNAs post-transcriptionally programming gene expression, in relation to photosynthetic traits. We focused on miR408, one of the most conserved plant miRNAs, and overexpressed it in parallel in Arabidopsis, tobacco, and rice. The transgenic plants all exhibited increased copper content in the chloroplast, elevated abundance of plastocyanin, and an induction of photosynthetic genes. By means of gas exchange and optical spectroscopy analyses, we showed that higher expression of miR408 leads to enhanced photosynthesis through improving efficiency of irradiation utilization and the capacity for carbon dioxide fixation. Consequently, miR408 hyper-accumulating plants exhibited higher rate of vegetative growth. An enlargement of seed size was also observed in all three species overproducing miR408. Moreover, we conducted a 2-year-two-location field trial and observed miR408 overexpression in rice significantly increased yield, which was primarily attributed to an elevation in grain weight. Taken together, these results demonstrate that miR408 is a positive regulator of photosynthesis and that its genetic engineering is a promising route for enhancing photosynthetic performance and yield in diverse plants.

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Section: Introductionmentioning

confidence: 99%

Overexpression of microRNA408 enhances photosynthesis, growth, and seed yield in diverse plants

Pan

Huang

Guo

et al. 2018

JIPB

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“…Of these detected variants, 88 MIRNA SNPs and 158 target SNPs were significantly associated with tree growth and wood properties (Table ; Notes S13), which indicated the possible role of miRNA–target interactions for secondary growth of plants, consistent with previous studies by Ong & Wickneswari () and Zhao et al . (). In addition to the repeatedly detected miRNAs and targets in our research (miR159, miR166, miR172, miR394 and LAC ), this study identified other miRNAs and target genes (e.g.…”

Section: Discussionmentioning

confidence: 97%

“…22 nt) that target mRNAs for deregulation or translational repression (Yumul et al ., ). Previous reports have revealed the diverse functions of miRNAs during secondary growth of plant species (Ong & Wickneswari, ; Lu et al ., ; Zhao et al ., ). For example, through regulation of the target gene, Arabidopsis LACCASE7 , miR857 could reduce laccase activity and be involved in the biosynthesis of lignin content and, consequently, morphogenesis of the secondary xylem (Zhao et al ., ).…”

Section: Introductionmentioning

confidence: 97%

“…Few studies have explored the role that variations in pre‐mature sequences of miRNA play in miRNA metabolism, or examined how miRBGs execute their functions in various biological processes, especially in long‐lived perennial plants. Because miRNAs have been validated to regulate the biology process of secondary growth (Lu et al ., ; Zhao et al ., ), understanding the roles of miRNAs in perennial plants requires a global perspective of the complete miRNA pathway.…”

Section: Introductionmentioning

confidence: 97%

“…Previous reports have revealed the diverse functions of miRNAs during secondary growth of plant species (Ong & Wickneswari, ; Lu et al ., ; Zhao et al ., ). For example, through regulation of the target gene, Arabidopsis LACCASE7 , miR857 could reduce laccase activity and be involved in the biosynthesis of lignin content and, consequently, morphogenesis of the secondary xylem (Zhao et al ., ). Similarly, miR397a was found to participate in lignin biosynthesis process in poplar ( Populus trichocarpa ) via negative regulation of 17 members of laccase gene family (Lu et al ., ).…”

Section: Introductionmentioning

confidence: 99%

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Genetic variants in microRNA biogenesis genes as novel indicators for secondary growth in Populus

Chen

et al. 2018

New Phytologist

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MicroRNAs (miRNAs) function as key regulators of complex traits, but how genetic alterations in miRNA biogenesis genes (miRBGs) affect quantitative variation has not been elucidated. We conducted transcript analyses and association genetics to investigate how miRBGs, miRNA genes (MIRNAs) and their respective targets contribute to secondary growth in a natural population of 435 Populus tomentosa individuals. This analysis identified 29 843 common single-nucleotide polymorphisms (SNPs; frequency > 0.10) within 682 genes (80 miRBGs, 152 MIRNAs, and 457 miRNA targets). Single-SNP association analysis found SNPs in 234 candidate genes exhibited significant additive/dominant effects on phenotypes. Among these, specific candidates that associated with the same traits produced 791 miRBG-MIRNA-target combinations, suggesting possible genetic miRBG-MIRNA and MIRNA-target interactions, providing an important clue for the regulatory mechanisms of miRBGs. Multi-SNP association found 4672 epistatic pairs involving 578 genes that showed significant associations with traits and identified 106 miRBG-MIRNA-target combinations. Two multi-hierarchical networks were constructed based on correlations of miRBG-miRNA and miRNA-target expression to further probe the mechanisms of trait diversity underlying changes in miRBGs. Our study opens avenues for the investigation of miRNA function in perennial plants and underscored miRBGs as potentially modulating quantitative variation in traits.

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Plant vascular development: mechanisms and environmental regulation

Agustí

Blázquez

2020

Cell. Mol. Life Sci.

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Plant vascular development is a complex process culminating in the generation of xylem and phloem, the plant transporting conduits. Xylem and phloem arise from specialized stem cells collectively termed (pro)cambium. Once developed, xylem transports mainly water and mineral nutrients and phloem transports photo-assimilates and signaling molecules. In the past few years, major advances have been made to characterize the molecular, genetic and physiological aspects that govern vascular development. However, less is known about how the environment reshapes the process, which molecular mechanisms link environmental inputs with developmental outputs, which gene regulatory networks facilitated the genetic adaptation of vascular development to environmental niches, or how the first vascular cells appeared as an evolutionary innovation. In this review, we (i) summarize the current knowledge of the mechanisms involved in vascular development, focusing on the model species Arabidopsis thaliana, (ii) describe the anatomical effect of specific environmental factors on the process, (iii) speculate about the main entry points through which the molecular mechanisms controlling of the process might be altered by specific environmental factors, and (iv) discuss future research which could identify the genetic factors underlying phenotypic plasticity of vascular development. Response to Reviewers: Thanks for the reviewer's comments. We have introduced all the minor changes/corrections suggested, although we have not highlighted them in the text version that we submit here. In fact, the manuscript has been extensively edited for language issues by a native speaker (acknowledged at the end of the text), shortening the sentences and writing with a more direct style. Of course, we have made sure that the message has not been altered at all.

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MicroRNA857 Is Involved in the Regulation of Secondary Growth of Vascular Tissues in Arabidopsis

Cited by 57 publications

References 54 publications

Overexpression of microRNA408 enhances photosynthesis, growth, and seed yield in diverse plants

Overexpression of microRNA408 enhances photosynthesis, growth, and seed yield in diverse plants

Genetic variants in microRNA biogenesis genes as novel indicators for secondary growth in Populus

Plant vascular development: mechanisms and environmental regulation

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