Sequential Regulation of Gibberellin, Brassinosteroid, and Jasmonic Acid Biosynthesis Occurs in Rice Coleoptiles to Control the Transcript Levels of Anti-Microbial<i>Thionin</i>Genes

Kitanaga, Yukihiro; Cui, Jian; Hasegawa, Morifumi; Yazaki, Junshi; Kikuchi, Shoshi; Nakamura, Hidemitsu; Ichikawa, Hiroaki; Asami, Tadao; Yamaguchi, Isomaro; Suzuki, Yoshihito

doi:10.1271/bbb.60145

Cited by 33 publications

(21 citation statements)

References 30 publications

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“…Propagation and/or movement of viruses may be inhibited by plant defence systems such as gene silencing (Kitanaga et al, 2006). The results of this study suggest that gene silencing may not be activated in infected cells until 6 days p.i.…”

Section: Modification Of Host Defence Systems By Rsv Infectionmentioning

confidence: 79%

Selective modification of rice (Oryza sativa) gene expression by rice stripe virus infection

Satoh

Kondoh

Sasaya³

et al. 2009

Journal of General Virology

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Rice stripe disease, caused by rice stripe virus (RSV), is one of the major virus diseases in east Asia. Rice plants infected with RSV usually show symptoms such as chlorosis, weakness, necrosis in newly emerged leaves and stunting. To reveal rice cellular systems influenced by RSV infection, temporal changes in the transcriptome of RSV-infected plants were monitored by a customized rice oligoarray system. The transcriptome changes in RSV-infected plants indicated that protein-synthesis machineries and energy production in the mitochondrion were activated by RSV infection, whereas energy production in the chloroplast and synthesis of cell-structure components were suppressed. The transcription of genes related to host-defence systems under hormone signals and those for gene silencing were not activated at the early infection phase. Together with concurrent observation of virus concentration and symptom development, such transcriptome changes in RSV-infected plants suggest that different sets of various host genes are regulated depending on the development of disease symptoms and the accumulation of RSV. INTRODUCTIONRice stripe disease is the most severe virus disease of rice in east Asia. Typical symptoms are chlorosis and weakness on newly emerged leaves. The plant becomes considerably stunted when affected at the early growth stages (Ou, 1972). Rice stripe disease also causes necrosis of newly emerged leaves (Takahashi et al., 1991). The causal virus is Rice stripe virus (RSV), which belongs to the genus Tenuivirus (Falk & Tsai, 1998). RSV is transmitted by small brown planthopper (SBPH; Laodelphax striatellus), Terthron albovittatum, Unkanodes sapporonus and Unkanodes albifascia (Falk & Tsai, 1998;Ou, 1972). RSV has a thin, filamentous shape and no envelope. The genome consists of four single-stranded RNA segments; RNA1 is negative-sense and RNAs 2-4 are ambisense. Viral mRNAs transcribed from viral RNA or viral cRNA by RNA-dependent RNA polymerase are released to the cytoplasm. Subsequently, a 59-capped short ribonucleotide leader cleaved from the host mRNA is added to the viral mRNAs by cap-snatching. The 59-capped RSV RNA is transcribed efficiently in host cells (Falk & Tsai, 1998;Shimizu et al., 1996). Genes encoding a gene-silencing suppressor and movement proteins were also identified in the RSV genome (Lu et al., 2009;Xiong et al., 2008Xiong et al., , 2009. Although extensive functional analysis of the RSV genome has been conducted, there have been no reports on the interaction between RSV and rice plants, which may clarify the mechanisms behind the appearance of disease symptoms.Rice is a model cereal plant, for which many genomic and transcriptome resources and tools are already available (Liang et al., 2008;Ouyang et al., 2007; Rice Annotation Project, 2008; Rice Full-length cDNA Consortium, 2003). The elucidation of genome sequences and structures in diverse organisms has led to the development of various high-throughput genome and transcriptome analytical tools. Numerous transcriptome profiles in...

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Section: Modification Of Host Defence Systems By Rsv Infectionmentioning

confidence: 79%

Selective modification of rice (Oryza sativa) gene expression by rice stripe virus infection

Satoh

Kondoh

Sasaya³

et al. 2009

Journal of General Virology

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“…It has likewise been shown that BR improves JA level in rice under stress [73], which unequivocally advances the declaration of thionin qualities encoding antimicrobial peptides demonstrating a potential crosstalk point with these two phytohormones. Strikingly, hindrance of JA incited accumulation of anthocyanins by brassinazole in Arabidopsis has been additionally detailed by BRs motioning on the JA pathway [74].…”

Section: Brs and Jasmonic Acidmentioning

confidence: 66%

Crosstalk of brassinosteroids with other phytohormones under various abiotic stresses

Ahmad¹,

Singh²,

Kamal³

2018

J App Biol Biotech

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Brassinosteroids (BRs) are the most important growth hormones which are steroidal in nature play crucially involved in growth and progressions of the plant. In recent years, advancements done in accessibility of biological possessions and approaches led to the most applicable mechanisms involved in BRs de novo synthesis, translocation and signaling pathways. The current researchers are also associated with the flexible roles of BRs. From the previous studies, it was manifest that BRs interaction with salicylic acid, abscisic acid, auxin, gibberellin, ethylene, cytokinin, and jasmonic acid in controlling numerous morphophysiological processes in plants. In this section, an effort is made to understand mysterious development and growth-linked either directly or not directly to BRs signaling and its intra-and interrelations with various phytohormones. This, in sequence, will support emerging extrapolative representations to moderate various valuable qualities in plants and address current encounters in agriculture.

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“…This decrease is suppressed by cotreatment with GA and brassinolide (BL) but not by single treatment with GA or BL (Kitanaga et al 2006). Further experiments have indicated that GA and BL synergistically control the transcript level of thionin genes by regulating the endogenous jasmonic acid (JA) level (Kitanaga et al 2006). These results support interactions between GA, BL, and JA in controlling thionin gene expression in rice coleoptiles.…”

Section: Cross-talk With Other Hormonal Signaling Pathwaysmentioning

confidence: 88%

“…Microarray and Northern blot analyses of rice indicate that transcripts of rice thionin genes encoding antimicrobial peptides are present at high levels in coleoptiles immediately after seed germination and then decrease to undetectable levels. This decrease is suppressed by cotreatment with GA and brassinolide (BL) but not by single treatment with GA or BL (Kitanaga et al 2006). Further experiments have indicated that GA and BL synergistically control the transcript level of thionin genes by regulating the endogenous jasmonic acid (JA) level (Kitanaga et al 2006).…”

Section: Cross-talk With Other Hormonal Signaling Pathwaysmentioning

confidence: 99%

Gibberellin Signal Transduction in Rice

Fan

Feng

Wang

et al. 2007

JIPB

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In the past decade, significant knowledge has accumulated regarding gibberellin (GA) signal transduction in rice as a result of studies using multiple approaches, particularly molecular genetics. The present review highlights the recent developments in the identification of GA signaling pathway components, the discovery of GA-induced destruction of GA signaling repressor (DELLA protein), and the possible mechanism underlying the regulation of GAresponsive gene expression in rice.

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Sequential Regulation of Gibberellin, Brassinosteroid, and Jasmonic Acid Biosynthesis Occurs in Rice Coleoptiles to Control the Transcript Levels of Anti-MicrobialThioninGenes

Cited by 33 publications

References 30 publications

Selective modification of rice (Oryza sativa) gene expression by rice stripe virus infection

Selective modification of rice (Oryza sativa) gene expression by rice stripe virus infection

Crosstalk of brassinosteroids with other phytohormones under various abiotic stresses

Gibberellin Signal Transduction in Rice

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