Detection and validation of <scp>QTL</scp>s associated with seed longevity in rice (<i>Oryza sativa</i> L.)

Liu, Wenqiang; Pan, Xi; Li, Yongchao; Duan, Yonghong; Jiang, Min; Liu, Sanxiong; Sheng, Xinnian; Li, Xiaoxiang

doi:10.1111/pbr.12611

Cited by 6 publications

(6 citation statements)

References 15 publications

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“…Quantitative trait loci (QTLs) regulating the vigor, the longevity, and other quality‐related characteristics of seeds have been identified in rice (Li et al ). Two putative QTLs, qSL‐2 and qSL‐8 , located on chromosomes 2 and 8, respectively, increase seed longevity (Liu et al ). Glutathione‐related proteins, DNA damage repair proteins, and a putative late embryogenesis abundant (LEA) protein in two hybrid rice cultivars, IIYou998 and BoYou998, with different seed vigor exhibit different degrees of change during seed storage.…”

Section: Introductionmentioning

confidence: 99%

miR164c and miR168a regulate seed vigor in rice

Zhou

Wang

et al. 2019

JIPB

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MicroRNAs (miRNAs) are key regulators of gene expression in many important biological processes of plants. However, few miRNAs have been shown to regulate seed vigor. Here, we conducted microarray assays to analyze miRNA expression levels in seeds of the rice (Oryza sativa L.) cultivar ZR02. Results showed significant differences in the expression of 11 miRNAs between artificially aged and untreated control seeds. Among these, osa‐miR164c was transcriptionally upregulated, while osa‐miR168a was downregulated in artificially aged seeds; this was verified by quantitative real‐time PCR analysis. Under the same aging condition, osa‐miR164c overexpression in OE164c transgenic seeds and osa‐miR168a silencing in MIM168a transgenic seeds of the rice cultivar Kasalath led to lower germination rates, whereas osa‐miR164c silencing in MIM164c and osa‐miR168a overexpression in OE168a resulted in higher seed germination rates compared with wild‐type seeds. Meanwhile, changes in cytomembrane permeability of seeds and in the expression level of osa‐miR164c target genes (OsPM27 and OsPSK5) and osa‐miR168a target genes (OsAGO1 and OsPTR2) under aging conditions coincided with changes in seed vigor induced by osa‐miR164c and osa‐miR168a. Thus, genetic manipulation of miRNAs has important implications in the development of crop cultivars with high vigor and extended life span of seeds.

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Section: Introductionmentioning

confidence: 99%

miR164c and miR168a regulate seed vigor in rice

Zhou

Wang

et al. 2019

JIPB

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“…As described above, more than 70 quantitative trait loci (QTLs) controlling seed storability have been identified by genetic segregating populations under either natural or artificial aging in rice [ 4 , 8 , 9 , 10 , 11 , 12 , 13 , 29 , 30 ]. In this study, we identified nine new QTLs for rice seed storability by GWAS analysis.…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Association Study Reveals the QTLs for Seed Storability in World Rice Core Collections

Luo

Wang

et al. 2021

Plants

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Seed storability is a main agronomically important trait to assure storage safety of grain and seeds in rice. Although many quantitative trait loci (QTLs) and associated genes for rice seed storability have been identified, the detailed genetic mechanisms of seed storability remain unclear in rice. In this study, a genome-wide association study (GWAS) was performed in 456 diverse rice core collections from the 3K rice genome. We discovered the new nine QTLs designated as qSS1-1, qSS1-2, qSS2-1, qSS3-1, qSS5-1, qSS5-2, qSS7-1, qSS8-1, and qSS11-1. According to the analysis of the new nine QTLs, our results could well explain the reason why seed storability of indica subspecies was superior to japonica subspecies in rice. Among them, qSS1-2 and qSS8-1 were potentially co-localized with a known associated qSS1/OsGH3-2 and OsPIMT1, respectively. Our results also suggest that pyramiding breeding of superior alleles of these associated genes will lead to new varieties with improved seed storability in the future.

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“…For more detail we refer the reader to recent excellent reviews describing the protective factors involved in longevity [7,9,14,15]. Longevity is a multifactorial trait, evident from the multiple genetic factors have been identified using Quantitative trait locus (QTL) and Genome-Wide Association Study (GWAS) approaches using historical data from long-term storage or conditions that accelerate seed ageing in a range of crops such as wheat [17,18], soybean [19,20], oilseed rape [21][22][23], maize [24], rice [25][26][27], barley [28], tobacco [29], lettuce [30] and Arabidopsis [16]. In these studies, different storage / aging protocols have been used, giving rise do different QTL, which complicates a comparative analysis of the data.…”

Section: Seed Longevity In a Nutshellmentioning

confidence: 99%

Molecular and environmental factors regulating seed longevity

Zinsmeister

Leprince

Buitink

2020

Biochemical Journal

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Seed longevity is a central pivot of the preservation of biodiversity, being of main importance to face the challenges linked to global climate change and population growth. This complex, quantitative seed quality trait is acquired on the mother plant during the second part of seed development. Understanding what factors contribute to lifespan is one of the oldest and most challenging questions in plant biology. One of these challenges is to recognize that longevity depends on the storage conditions that are experimentally used because they determine the type and rate of deleterious conditions that lead to cell death and loss of viability. In this review, we will briefly review the different storage methods that accelerate the deteriorative reactions during storage and argue that a minimum amount of information is necessary to interpret the longevity data. Next, we will give an update on recent discoveries on the hormonal factors regulating longevity, both from the ABA signaling pathway but also other hormonal pathways. In addition, we will review the effect of both maternal and abiotic factors that influence longevity. In the last section of this review, we discuss the problems in unraveling cause-effect relationship between the time of death during storage and deteriorative reactions leading to seed ageing. We focus on the three major types of cellular damage, namely membrane permeability, lipid peroxidation and RNA integrity for which germination data on seed stored in dedicated seed banks for long period times are now available.

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Detection and validation of QTLs associated with seed longevity in rice (Oryza sativa L.)

Cited by 6 publications

References 15 publications

miR164c and miR168a regulate seed vigor in rice

miR164c and miR168a regulate seed vigor in rice

Genome-Wide Association Study Reveals the QTLs for Seed Storability in World Rice Core Collections

Molecular and environmental factors regulating seed longevity

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