<i>RID1</i>
            , encoding a Cys2/His2-type zinc finger transcription factor, acts as a master switch from vegetative to floral development in rice

Wu, Changyin; You, Changjun; Li, Caishun; Long, Tuan; Chen, Guoxing; Byrne, Mary E.; Zhang, Qifa

doi:10.1073/pnas.0806019105

Cited by 211 publications

(207 citation statements)

References 41 publications

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“…In LD conditions, the expression of Hd3a is suppressed by Hd1 (Hayama et al, 2003), and Ehd1 and Hd3a are also suppressed by Ghd7 (Xue et al, 2008), which accounts for the late flowering in rice. Additionally, RID1/OsID1/Ehd2 promotes flowering under both SD and LD conditions by up-regulating Ehd1 (Matsubara et al, 2008;Park et al, 2008;Wu et al, 2008). In this study, DTH8 was found to delay rice flowering time by negatively influencing the expression of Ehd1 and Hd3a in LD conditions ( Fig.…”

Section: Dth8 Is a Novel Flowering Suppressormentioning

confidence: 49%

“…More genes for plant height in rice have been identified (Ashikari et al, 1999;Yamamuroa et al, 2000;Sasaki et al, 2002Sasaki et al, , 2003Honga et al, 2003;Itoh et al, 2004;Tanabe et al, 2005). The molecular genetic pathway for flowering time has been under elucidation in rice since the isolation of many correlative genes or QTLs (Yano et al, 2000;Kojima et al, 2002;Doi et al, 2004;Kim et al, 2007;Wu et al, 2008). Although there are close correlations among yield, plant height, and flowering time, most of these genes were reported to be regulating only one of the three traits.…”

Section: Dth8 Has Pleiotropic Effectsmentioning

confidence: 99%

“…S7), suggesting that DTH8 is a flowering suppressor by down-regulating the expression of Ehd1 and Hd3a under LD conditions. There are many studies to have reported that Ehd1 locates in the upstream of Hd3a and could promote its expression (Doi et al, 2004;Kim et al, 2007;Matsubara et al, 2008;Park et al, 2008;Wu et al, 2008). At the same time, some other reports show that the flowering suppressor could repress Hd3a expression by down-regulating Ehd1 and then inhibits flowering (Xue et al, 2008).…”

Section: Dth8 Is a Novel Flowering Suppressormentioning

confidence: 99%

“…By contrast, Hd1 represses flowering by down-regulating Hd3a expression under LD conditions (Kojima et al, 2002). Additionally, RID1/OsID1/ Ehd2, which is homologous to maize (Zea mays) Indeterminate1 (ID1), promotes flowering in both SD and LD conditions by up-regulating Ehd1 (Matsubara et al, 2008;Park et al, 2008;Wu et al, 2008). Ghd7, encoding a CCT domain protein, has been proven to have major effects on an array of traits in rice, including number of grains per panicle, plant height, and flowering time (Xue et al, 2008); it represses Ehd1 and Hd3a expression and then delays flowering in LD conditions.…”

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confidence: 99%

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DTH8 Suppresses Flowering in Rice, Influencing Plant Height and Yield Potential Simultaneously

et al. 2010

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The three most important agronomic traits of rice (Oryza sativa), yield, plant height, and flowering time, are controlled by many quantitative trait loci (QTLs). In this study, a newly identified QTL, DTH8 (QTL for days to heading on chromosome 8), was found to regulate these three traits in rice. Map-based cloning reveals that DTH8 encodes a putative HAP3 subunit of the CCAAT-box-binding transcription factor and the complementary experiment increased significantly days to heading, plant height, and number of grains per panicle in CSSL61 (a chromosome segment substitution line that carries the nonfunctional DTH8 allele) with the Asominori functional DTH8 allele under long-day conditions. DTH8 is expressed in most tissues and its protein is localized to the nucleus exclusively. The quantitative real-time PCR assay revealed that DTH8 could down-regulate the transcriptions of Ehd1 (for Early heading date1) and Hd3a (for Heading date3a; a rice ortholog of FLOWERING LOCUS T) under long-day conditions. Ehd1 and Hd3a can also be down-regulated by the photoperiodic flowering genes Ghd7 and Hd1 (a rice ortholog of CONSTANS). Meanwhile, the transcription of DTH8 has been proved to be independent of Ghd7 and Hd1, and the natural mutation of this gene caused weak photoperiod sensitivity and shorter plant height. Taken together, these data indicate that DTH8 probably plays an important role in the signal network of photoperiodic flowering as a novel suppressor as well as in the regulation of plant height and yield potential.

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Section: Dth8 Is a Novel Flowering Suppressormentioning

confidence: 49%

Section: Dth8 Has Pleiotropic Effectsmentioning

confidence: 99%

Section: Dth8 Is a Novel Flowering Suppressormentioning

confidence: 99%

mentioning

confidence: 99%

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DTH8 Suppresses Flowering in Rice, Influencing Plant Height and Yield Potential Simultaneously

et al. 2010

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“…It has been known for centuries that flowering of plants is regulated by day length (2). In recent years, many genes for photoperiod-controlled flowering have been identified in a number of plants, leading to characterization of pathways in flowering regulation (3)(4)(5)(6)(7)(8)(9). However, photoperiod regulation of other developmental processes has been studied in far less detail than flowering.…”

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confidence: 99%

A long noncoding RNA regulates photoperiod-sensitive male sterility, an essential component of hybrid rice

Ding¹,

Lu²,

Ouyang³

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

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574

455

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Hybrid rice has greatly contributed to the global increase of rice productivity. A major component that facilitated the development of hybrids was a mutant showing photoperiod-sensitive male sterility (PSMS) with its fertility regulated by day length. Transcriptome studies have shown that large portions of the eukaryotic genomic sequences are transcribed to long noncoding RNAs (lncRNAs). However, the potential roles for only a few lncRNAs have been brought to light at present. Thus, great efforts have to be invested to understand the biological functions of lncRNAs. Here we show that a lncRNA of 1,236 bases in length, referred to as long-dayspecific male-fertility-associated RNA (LDMAR), regulates PSMS in rice. We found that sufficient amount of the LDMAR transcript is required for normal pollen development of plants grown under long-day conditions. A spontaneous mutation causing a single nucleotide polymorphism (SNP) between the wild-type and mutant altered the secondary structure of LDMAR. This change brought about increased methylation in the putative promoter region of LDMAR, which reduced the transcription of LDMAR specifically under long-day conditions, resulting in premature programmed cell death (PCD) in developing anthers, thus causing PSMS. Thus, a lncRNA could directly exert a major effect on a trait like a structure gene, and a SNP could alter the function of a lncRNA similar to amino acid substitution in structural genes. Molecular elucidating of PSMS has important implications for understanding molecular mechanisms of photoperiod regulation of many biological processes and also for developing male sterile germplasms for hybrid crop breeding.epigenetics | Oryza sativa

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Genetic Engineering of Miscanthus

Engler

Jakob

2012

Genomics of the Saccharinae

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RID1 , encoding a Cys2/His2-type zinc finger transcription factor, acts as a master switch from vegetative to floral development in rice

Cited by 211 publications

References 41 publications

DTH8 Suppresses Flowering in Rice, Influencing Plant Height and Yield Potential Simultaneously

DTH8 Suppresses Flowering in Rice, Influencing Plant Height and Yield Potential Simultaneously

A long noncoding RNA regulates photoperiod-sensitive male sterility, an essential component of hybrid rice

Genetic Engineering of Miscanthus

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