Gibberellin Signal Transduction in Rice

Fan, Liu‐Min; Feng, Xiaoyan; Wang, Yu; Deng, Xing Wang

doi:10.1111/j.1744-7909.2007.00511.x

Cited by 9 publications

(3 citation statements)

References 74 publications

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“…The expression level of miR159 has been shown increased by abscisic acid (ABA), a plant hormone involved in bud and seed dormancy, root growth, leaf senescence and abscission, stomata opening and stress protection [ 191 ]. Besides, miR159, miR319 and miR166 have been proven to be involved in the plant hormone gibberellin pathway [ 192 – 194 ]. Hormone modulation of miRNAs in plant has been exemplified in the case of auxin.…”

Section: Introductionmentioning

confidence: 99%

MicroRNAs from plants to animals, do they define a new messenger for communication?

2018

Nutr Metab (Lond)

102

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MicroRNAs (miRNAs), a class of single-stranded non-coding RNA of about 22 nucleotides, are potent regulators of gene expression existing in both plants and animals. Recent studies showed that plant miRNAs could enter mammalian bloodstream via gastrointestinal tract, through which access a variety of tissues and cells of recipients to exert therapeutic effects. This intriguing phenomenon indicates that miRNAs of diet/plant origin may act as a new class of bioactive ingredients communicating with mammalian systems. In this review, in order to pinpoint the reason underlying discrepancies of miRNAs transmission from diet/plant to animals, the pathways that generate miRNAs and machineries involved in the functions of miRNAs in both kingdoms were outlined and compared. Then, the current controversies concerning cross-kingdom regulations and the potential mechanisms responsible for absorption and transfer of diet/plant-derived miRNAs were interpreted. Furthermore, the hormone-like action of miRNAs and the intricate interplay between miRNAs and hormones were implicated. Finally, how these findings may impact nutrition and medicine were briefly discussed.

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Section: Introductionmentioning

confidence: 99%

MicroRNAs from plants to animals, do they define a new messenger for communication?

2018

Nutr Metab (Lond)

102

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“…On the one hand, key genes in the GA synthesis pathway are mutated, and low levels of GA content cause dwarfing (Sakamoto et al., 2004; Spielmeyer et al., 2002); on the other hand, gibberellin metabolic defects can also cause plant dwarfing, mainly in the study of DELLA proteins (Hirano et al., 2012; Sun, 2011; Zhang et al., 2014), F‐box proteins (Sasaki et al., 2003), Sleepy1 (SLY1) (McGinnis et al., 2003), and the Gibberellin receptor GID1 (Ueguchi‐Tanaka & Matsuoka, 2010). In general, GA binds to GID1 and DELLA proteins to form a GA‐GID1‐DELLA protein complex, promotes F‐box ubiquitination in the DELLA protein and SCF complex, alleviates the inhibition of DELLA protein, and activates downstream‐related genes (Colebrook et al., 2014; Fan et al., 2007; Sun, 2010). Most of previous studies have identified these key factors using GA‐insensitive mutants, especially gid1 in rice (Ueguchi‐Tanaka et al., 2005), gai (Peng et al., 1997), rga (Silverstone et al., 1998), dwarf mutants gid2 , and sly1 in Arabidopsis (McGinnis et al., 2003; Sasaki et al., 2003).…”

Section: Introductionmentioning

confidence: 99%

Cloning and functional mechanism of the dwarf gene gba affecting stem elongation and cellulose biosynthesis in jute (Corchorus olitorius)

Li,

Chen,

Chen

et al. 2024

The Plant Journal

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SUMMARYPlant height (PH) is an important factor affecting bast fiber yield in jute. Here, we report the mechanism of dwarfism in the ‘Guangbaai’ (gba) of jute. The mutant gba had shorter internode length and cell length compared to the standard cultivar ‘TaiZi 4’ (TZ4). Exogenous GA3 treatment indicated that gba is a GA‐insensitive dwarf mutant. Quantitative trait locus (QTL) analysis of three PH‐related traits via a high‐density genetic linkage map according to re‐seq showed that a total of 25 QTLs were identified, including 13 QTLs for PH, with phenotypic variation explained ranging from 2.42 to 74.16%. Notably, the functional mechanism of the candidate gene CoGID1a, the gibberellic acid receptor, of the major locus qPHIL5 was evaluated by transgenic analysis and virus‐induced gene silencing. A dwarf phenotype‐related single nucleotide mutation in CoGID1a was identified in gba, which was also unique to the dwarf phenotype of gba among 57 cultivars. Cogid1a was unable to interact with the growth‐repressor DELLA even in the presence of highly accumulated gibberellins in gba. Differentially expressed genes between transcriptomes of gba and TZ4 after GA3 treatment indicated up‐regulation of genes involved in gibberellin and cellulose synthesis in gba. Interestingly, it was found that up‐regulation of CoMYB46, a key transcription factor in the secondary cell wall, by the highly accumulated gibberellins in gba promoted the expression of cellulose synthase genes CoCesA4 and CoCesA7. These findings provide valuable insights into fiber development affected by endogenous gibberellin accumulation in plants.

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“…Mutants deficient in GA biosynthesis or impaired in GA signaling exhibit a dwarfed plant phenotype. In model plants like dicotyledon Arabidopsis and monocotyledon rice, several genes that encode the GA receptor GA-INSENSITIVE DWARF1 (GID1), DELLA proteins, and the F-box proteins GA-INSENSITIVE DWARF2 (GID2) and AtSLEEPY1 (AtSLY1) have been identified by screening GA signaling mutants (Peng et al 1997;Silverstone et al 1998;Ikeda et al 2001;Itoh et al 2002;McGinnis et al 2003;Sasaki et al 2003;Gomi et al 2004;Ueguchi-Tanaka et al 2005, 2007, an integral picture of the GA signal transduction pathway has started to emerge (Eckardt 2007;Fan et al 2007;Jiang and Fu 2007;Davière et al 2008;Hirano et al 2008;Schwechheimer 2008). Nuclear-localized DELLA proteins are GA signaling repressors that restrain gene expression associated with GA-induced growth processes (Eckardt 2007;Schwechheimer 2008).…”

Section: Introductionmentioning

confidence: 99%

A novel semidwarf mutant 02428ha in rice is caused by reduced gibberellin sensitivity

et al. 2010

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The rice (Oryza sativa L.) elongated uppermost internode (eui) gene effectively results in a recessive tall plant type. In eui background, we found a mutant 02428ha that exhibited a semidwarf phenotype. Because semidwarf varieties possess high yield potential, this mutant may be useful for hybrid rice breeding. The present study aimed to characterize the dwarfing mechanism in the mutant. Microscopic observation revealed that the cell length in the uppermost internode was reduced compared to the wild type. The mutant showed a decreased sensitivity to exogenous gibberellin A 3 (GA 3 ) and gibberellin (GA) biosynthesis inhibitor, uniconazole. Meanwhile, it contained a high level of endogenous gibberellin A 1 (GA 1 ). These results indicated that the semidwarf phenotype of 02428ha was caused by impairment of GA signal transduction rather than by block in GA biosynthesis. Furthermore, expression analysis of genes involved in the GA signaling pathway showed that transcript of GIBBERELLIN INSENSITIVE DWARF2 (GID2) was down-regulated in the mutant. Sequence analysis also revealed a 15-base pair (bp) insertion between base 594 and 595 in the coding region of GID2. Consequently, the reason for down-regulation expression of GID2 or sequence variation of GID2 might play roles in the phenotype of 02428ha.

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Gibberellin Signal Transduction in Rice

Cited by 9 publications

References 74 publications

MicroRNAs from plants to animals, do they define a new messenger for communication?

MicroRNAs from plants to animals, do they define a new messenger for communication?

Cloning and functional mechanism of the dwarf gene gba affecting stem elongation and cellulose biosynthesis in jute (Corchorus olitorius)

A novel semidwarf mutant 02428ha in rice is caused by reduced gibberellin sensitivity

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