Altered expression of maize PLASTOCHRON1 enhances biomass and seed yield by extending cell division duration

Sun, Xiaohuan; Cahill, James; Hautegem, Tom Van; Feys, Kim; Whipple, Clinton; Novák, Ondřej; Delbare, Sofie Y. N.; Versteele, Charlot; Demuynck, Kirin; Block, Jolien De; Storme, Véronique; Claeys, Hannes; Lijsebettens, Mieke Van; Coussens, Griet; Ljung, Karin; Vliegher, A. de; Muszynski, Michael G.; Inzé, Dirk; Nelissen, Hilde

doi:10.1038/ncomms14752

Cited by 83 publications

(100 citation statements)

References 57 publications

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“…The shorter zone of cell division coupled with lower cell‐production rates causes a reduction in cell formation and ultimately leaf‐elongation rates in P‐deficient maize (Assuero et al, ). Recently, Sun et al () demonstrated that the maize PLASTOCHRON1 (ZmPLA1) gene increases the duration of leaf elongation by maintaining dividing cells in a proliferative, undifferentiated state for a longer time. Using another monocot, ryegrass ( Lolium perenne L.), Kavanová, Lattanzi, et al () demonstrated that Pi deficiency decreases the leaf‐elongation rate as a result of a slower cell‐production rate and final cell length where the reduced rate of cell formation solely results from a slower average cell division rate.…”

Section: Temporal Variation Of P Remobilization: Vegetative–vegetativmentioning

confidence: 99%

Molecular mechanisms underpinning phosphorus‐use efficiency in rice

Dissanayaka

Plaxton

Lambers

et al. 2018

Plant Cell & Environment

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Orthophosphate (H PO , Pi) is an essential macronutrient integral to energy metabolism as well as a component of membrane lipids, nucleic acids, including ribosomal RNA, and therefore essential for protein synthesis. The Pi concentration in the solution of most soils worldwide is usually far too low for maximum growth of crops, including rice. This has prompted the massive use of inefficient, polluting, and nonrenewable phosphorus (P) fertilizers in agriculture. We urgently need alternative and more sustainable approaches to decrease agriculture's dependence on Pi fertilizers. These include manipulating crops by (a) enhancing the ability of their roots to acquire limiting Pi from the soil (i.e. increased P-acquisition efficiency) and/or (b) increasing the total biomass/yield produced per molecule of Pi acquired from the soil (i.e. increased P-use efficiency). Improved P-use efficiency may be achieved by producing high-yielding plants with lower P concentrations or by improving the remobilization of acquired P within the plant so as to maximize growth and biomass allocation to developing organs. Membrane lipid remodelling coupled with hydrolysis of RNA and smaller P-esters in senescing organs fuels P remobilization in rice, the world's most important cereal crop.

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Section: Temporal Variation Of P Remobilization: Vegetative–vegetativmentioning

confidence: 99%

Molecular mechanisms underpinning phosphorus‐use efficiency in rice

Dissanayaka

Plaxton

Lambers

et al. 2018

Plant Cell & Environment

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“…More studies will be needed to examine the biological relevance of the prolonged LED as a compensation for the drought-induced growth reduction, and to analyse whether a prolonged LED allows to resume growth upon re-watering. Recently, we identified PLA1, a cytochrome P450 78A, as one of the key players involved in the prolonged LED under mild drought and cold stress (Sun et al, 2017).…”

Section: Plants Grown Under Mild Drought Stress Have Adapted Their Grmentioning

confidence: 99%

The reduction in maize leaf growth under mild drought affects the transition between cell division and cell expansion and cannot be restored by elevated gibberellic acid levels

Nelissen

Sun

Rymen

et al. 2017

Plant Biotechnology Journal

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SummaryGrowth is characterized by the interplay between cell division and cell expansion, two processes that occur separated along the growth zone at the maize leaf. To gain further insight into the transition between cell division and cell expansion, conditions were investigated in which the position of this transition zone was positively or negatively affected. High levels of gibberellic acid (GA) in plants overexpressing the GA biosynthesis gene GA20‐OXIDASE (GA20OX‐1 OE) shifted the transition zone more distally, whereas mild drought, which is associated with lowered GA biosynthesis, resulted in a more basal positioning. However, the increased levels of GA in the GA20OX‐1 OE line were insufficient to convey tolerance to the mild drought treatment, indicating that another mechanism in addition to lowered GA levels is restricting growth during drought. Transcriptome analysis with high spatial resolution indicated that mild drought specifically induces a reprogramming of transcriptional regulation in the division zone. ‘Leaf Growth Viewer’ was developed as an online searchable tool containing the high‐resolution data.

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“…Also, CYP450s promote plants growth and development at various stages of the plant life cycle through different mechanisms. ZmCYP78A1 has ability to stimulate leaf growth by extending cell division duration [15]. In rice, mutation in cyp96B4 leads to altered cell wall composition by affecting the expression of cell wall-related genes like CESA1, CESA3, CESA4, CESA7, CESA8, CESA9, BC1 and BC10 [16].…”

Section: Introductionmentioning

confidence: 99%

Comparative functional genomics analysis of cytochrome P450 gene superfamily in wheat and maize

Wei

2020

BMC Plant Biol

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Background: The cytochrome P450s (CYP450s) as the largest enzyme family of plant metabolism participate in various physiological processes, whereas no study has demonstrated interest in comprehensive comparison of the genes in wheat and maize. Genome-wide survey, characterization and comparison of wheat and maize CYP450 gene superfamily are useful for genetic manipulation of the Gramineae crops.Results: In total, 1285 and 263 full-length CYP450s were identified in wheat and maize, respectively. According to standard nomenclature, wheat CYP450s (TaCYP450s) were categorized into 45 families, while maize CYP450s (ZmCYP450s) into 43 families. A comprehensive analysis of wheat and maize CYP450s, involved in functional domains, conserved motifs, phylogeny, gene structures, chromosome locations and duplicated events was performed. The result showed that each family/subfamily in both species exhibited characteristic features, suggesting their phylogenetic relationship and the potential divergence in their functions. Functional divergence analysis at the amino acid level of representative clans CYP51, CYP74 and CYP97 in wheat, maize and rice identified some critical amino acid sites that are responsible for functional divergence of a gene family. Expression profiles of Ta-, ZmCYP450s were investigated using RNA-seq data, which contribute to infer the potential functions of the genes during development and stress responses. We found in both species CYP450s had preferential expression in specific tissues, and many tissue-specific genes were identified. Under water-deficit condition, 82 and 39 significantly differentially expressed CYP450s were respectively detected in wheat and maize. These genes may have some roles in protecting plants against drought damage. Thereinto, fourteen CYP450s were selected to validate their expression level through qRT-PCR. To further elucidating molecular mechanisms of CYP450 action, gene coexpression network was constructed. In total, 477 TaCYP450s were distributed in 22 co-expression modules, and some co-expressed genes that likely take part in the same biochemical pathway were identified. For instance, the expression of TaCYP74A98_4D was highly correlated with TaLOX9, TaLOX36, TaLOX39, TaLOX44 and TaOPR8, and all of them may be involved in jasmonate (JA) biosynthesis. TaCYP73A201_3A showed coexpression with TaPAL1.25, TaCCoAOMT1.2, TaCOMT.1, TaCCR1.6 and TaLAC5, which probably act in the wheat stem and/or root lignin synthesis pathway. Conclusion:Our study first established systematic information about evolutionary relationship, expression pattern and function characterization of CYP450s in wheat and maize.

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Altered expression of maize PLASTOCHRON1 enhances biomass and seed yield by extending cell division duration

Cited by 83 publications

References 57 publications

Molecular mechanisms underpinning phosphorus‐use efficiency in rice

Molecular mechanisms underpinning phosphorus‐use efficiency in rice

The reduction in maize leaf growth under mild drought affects the transition between cell division and cell expansion and cannot be restored by elevated gibberellic acid levels

Comparative functional genomics analysis of cytochrome P450 gene superfamily in wheat and maize

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