Maize kernel development

Dai, Dawei; Ma, Zeyang; Song, Rentao

doi:10.1007/s11032-020-01195-9

Cited by 32 publications

(22 citation statements)

References 340 publications

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“…The maize kernel offers an exquisite experimental system for molecular investigation of crop kernel development, as it has well‐characterized morphogenesis and powerful genetics. From the first identification of a maize kernel mutant ( OPAQUE2 , O2 ) in 1987 (Schmidt et al ., 1987), several hundreds of such mutant have been cloned in the past decades (Dai et al ., 2020, 2021), which encoded a wide range of protein categories, including proteins related to the UPS pathway (Disch et al ., 2006; Song et al ., 2007; Xia et al ., 2013). Particularly, several components of CRL have been identified as key factors regulating seed size (Li et al ., 2008; Li & Li, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Maize ( Zea may L.) is one of the most important crops, which is served as a model plant for researching kernel development in angiosperm. Although several hundred genes have been cloned to regulate kernel development in maize (Wang et al ., 2017, 2018; Yang et al ., 2017; Li et al ., 2019; Dai et al ., 2020, 2021; Zhang et al ., 2021), the function of RUBylation related genes in this important trait is unclear. In this study, we reported on the first cloning of a maize small kernel mutant smk501, and demonstrated that smk501 encoded the RUB activating enzyme E1 subunit, ZmECR1.…”

Section: Introductionmentioning

confidence: 99%

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Small kernel 501 (smk501) encodes the RUBylation activating enzyme E1 subunit ECR1 (E1 C‐TERMINAL RELATED 1) and is essential for multiple aspects of cellular events during kernel development in maize

et al. 2021

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Summary RUBylation plays essential roles in plant growth and development through regulating Cullin‐RING ubiquitin E3 ligase (CRL) activities and the CRL‐mediated protein degradations. However, the function of RUBylation in regulating kernel development remains unclear. Through genetic and molecular analyses of a small kernel 501 (smk501) mutant in maize (Zea mays), we cloned the smk501 gene, revealed its molecular function, and defined its roles in RUBylation pathway and seed development. Smk501 encodes a RUBylation activating enzyme E1 subunit ZmECR1 (E1 C‐TERMINAL RELATED 1) protein. Destruction in RUBylation by smk501 mutation resulted in less embryo and endosperm cell number and smaller kernel size. The transcriptome and proteome profiling, hormone evaluation and cell proliferation observation revealed that disturbing ZmECR1 expression mainly affects pathways on hormone signal transduction, cell cycle progression and starch accumulation during kernel development. In addition, mutant in zmaxr1 (Auxin resistant 1), another RUB E1 subunit, also showed similar defects in kernel development. Double mutation of zmecr1 and zmaxr1 lead to empty pericarp kernel phenotype. RUBylation is a novel regulatory pathway affecting maize kernel development, majorly through its functions in modifying multiple cellular progresses.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Small kernel 501 (smk501) encodes the RUBylation activating enzyme E1 subunit ECR1 (E1 C‐TERMINAL RELATED 1) and is essential for multiple aspects of cellular events during kernel development in maize

et al. 2021

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“…In recent years, more and more genetic and biochemical studies have shown that PPR proteins play important roles in seed development of higher plants, and loss-offunction of these PPR proteins usually leads to defects in embryogenesis and/or endosperm development [4,51]. According to the phenotypic expression, seed mutants can be divided into four major classes: empty pericarp (emp), embryo specific (emb), defective kernel (dek), and small kernel (smk).…”

Section: Functions Of Ppr Proteins In Seed Developmentmentioning

confidence: 99%

Functions of PPR Proteins in Plant Growth and Development

Sun

Liu

et al. 2021

IJMS

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Pentatricopeptide repeat (PPR) proteins form a large protein family in land plants, with hundreds of different members in angiosperms. In the last decade, a number of studies have shown that PPR proteins are sequence-specific RNA-binding proteins involved in multiple aspects of plant organellar RNA processing, and perform numerous functions in plants throughout their life cycle. Recently, computational and structural studies have provided new insights into the working mechanisms of PPR proteins in RNA recognition and cytidine deamination. In this review, we summarized the research progress on the functions of PPR proteins in plant growth and development, with a particular focus on their effects on cytoplasmic male sterility, stress responses, and seed development. We also documented the molecular mechanisms of PPR proteins in mediating RNA processing in plant mitochondria and chloroplasts.

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“…Yield is one of the most complex maize traits [3] and is comprised of several factors, including both kernel and ear traits. Due to their signi cant impact on yield and quality, maize kernels have been extensively studied [4]. The majority of kernel morphological traits are quantitative and result from multiple loci, which can be independently studied through quantitative trait loci (QTL) analysis [5].…”

Section: Introductionmentioning

confidence: 99%

QTL mapping of maize kernel traits under low phosphorus stress

Jiang

Zhang

et al. 2022

Preprint

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Low phosphorus stress significantly impacts the development of maize kernels. In this study, the 082 maize genotype, which has high phosphorus use efficiency, and the Ye107 maize genotype, which has low phosphorus use efficiency, were utilized to construct an F2:3 population. QTL mapping was then employed to determine the genetic basis of differences in the maize kernel traits of the two parents in a low-phosphorus environment. This analysis revealed several major QTLs that control environmental impacts on kernel length, kernel width, kernel thickness, and kernel weight. These QTLs were detected in all three environments and were distributed on five genome segments of chromosomes 3, 5, 6, and 9. Most environmental insensitive QTLs had stable effects in all low-phosphorus environments, indicating that they may be broadly applicable to breeding efforts designed to generate germplasm with higher phosphorus use efficiency.

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Maize kernel development

Cited by 32 publications

References 340 publications

Small kernel 501 (smk501) encodes the RUBylation activating enzyme E1 subunit ECR1 (E1 C‐TERMINAL RELATED 1) and is essential for multiple aspects of cellular events during kernel development in maize

Small kernel 501 (smk501) encodes the RUBylation activating enzyme E1 subunit ECR1 (E1 C‐TERMINAL RELATED 1) and is essential for multiple aspects of cellular events during kernel development in maize

Functions of PPR Proteins in Plant Growth and Development

QTL mapping of maize kernel traits under low phosphorus stress

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