Identification of several rice genes regulated by Si nutrition

Watanabe, Shuichi; Shimoi, Emi; Ohkama, Naoko; Hayashi, Hiroaki; Yoneyama, T.; Yazaki, Junshi; Fujii, Fumiko; Shinbo, Kanako; Yamamoto, Kimiko; Sakata, Katsumi; Sasaki, Takuji; Kishimoto, Naoki; Kikuchi, Shoshi; Fujiwara, Toru

doi:10.1080/00380768.2004.10408603

Cited by 44 publications

(37 citation statements)

References 7 publications

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“…These results were consistent on all plants tested even though A. thaliana did absorb Si in important amounts as observed here and reported previously (20). In rice, Watanabe et al (44) concluded that differences in gene expression were not appreciable between Si-treated and nontreated plants in the absence of stress. These observations are in line with the concept that the effect of supplying Si is only manifest when the plant is under some form of stress and that this effect is not latent but only activated upon stress.…”

Section: Discussionsupporting

confidence: 78%

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

Fauteux

Chain

Belzile

et al. 2006

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

309

202

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The role and essentiality of silicon (Si) in plant biology have been debated for >150 years despite numerous reports describing its beneficial properties. To obtain unique insights regarding the effect of Si on plants, we performed a complete transcriptome analysis of both control and powdery mildew-stressed Arabidopsis plants, with or without Si application, using a 44K microarray. Surprisingly, the expression of all but two genes was unaffected by Si in control plants, a result contradicting reports of a possible direct effect of Si as a fertilizer. In contrast, inoculation of plants, treated or not with Si, altered the expression of a set of nearly 4,000 genes. After functional categorization, many of the upregulated genes were defense-related, whereas a large proportion of down-regulated genes were involved in primary metabolism. Regulated defense genes included R genes, stress-related transcription factors, genes involved in signal transduction, the biosynthesis of stress hormones (SA, JA, ethylene), and the metabolism of reactive oxygen species. In inoculated plants treated with Si, the magnitude of down-regulation was attenuated by >25%, an indication of stress alleviation. Our results demonstrate that Si treatment had no effect on the metabolism of unstressed plants, suggesting a nonessential role for the element but that it has beneficial properties attributable to modulation of a more efficient response to pathogen stress.Erysiphe cichoracearum ͉ microarray ͉ transcriptome

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Section: Discussionsupporting

confidence: 78%

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

Fauteux

Chain

Belzile

et al. 2006

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

309

202

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“…2E). Additionally, although exogenous MeJA applications increased JA levels in both Si-treated and untreated WT plants, Sitreated plants exhibited significantly higher JA levels than those observed in untreated plants at 3,9, and 12 h after MeJA application (P = 0.036, 0.0022, and 0.015, respectively) ( Fig. 2E).…”

Section: Resultsmentioning

confidence: 99%

“…Si treatments have been shown to be beneficial for plants exposed to an array of abiotic and biotic stresses (2). In the absence of stress, however, differences between Si-treated and untreated plants are not readily discernible (3,4).…”

mentioning

confidence: 99%

Priming of jasmonate-mediated antiherbivore defense responses in rice by silicon

Song

Long

et al. 2013

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

293

270

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Although the function of silicon (Si) in plant physiology has long been debated, its beneficial effects on plant resistance against abiotic and biotic stresses, including insect herbivory, have been well documented. In addition, the jasmonate (JA) signaling pathway plays a crucial role in mediating antiherbivore defense responses in plants. However, potential interactions between JA and Si in response to insect attack have not been examined directly. To explore the role JA may play in Si-enhanced resistance, we silenced the expression of allene oxide synthase (OsAOS; active in JA biosynthesis) and CORONATINE INSENSITIVE1 (OsCOI1; active in JA perception) genes in transgenic rice plants via RNAi and examined resulting changes in Si accumulation and defense responses against caterpillar Cnaphalocrocis medinalis (rice leaffolder, LF) infestation. Si pretreatment increased rice resistance against LF larvae in wild-type plants but not in OsAOS and OsCOI1 RNAi lines. Upon LF attack, wild-type plants subjected to Si pretreatment exhibited enhanced defense responses relative to untreated controls, including higher levels of JA accumulation; increased levels of transcripts encoding defense marker genes; and elevated activities of peroxidase, polyphenol oxidase, and trypsin protease inhibitor. Additionally, reduced Si deposition and Si cell expansion were observed in leaves of OsAOS and OsCOI1 RNAi plants in comparison with wild-type plants, and reduced steady-state transcript levels of the Si transporters OsLsi1, OsLsi2, and OsLsi6 were observed in Si-pretreated plants after LF attack. These results suggest a strong interaction between Si and JA in defense against insect herbivores involving priming of JA-mediated defense responses by Si and the promotion of Si accumulation by JA.Oryza sativa | induced defense | jasmonic acid | mitogen-activated protein kinase

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“…However, the biochemical and physiological mechanisms that are potentiated by silicon are complex phenomena (Rodrigues et al, 2005). Under optimum conditions, gene expression had no signifi cant diff erence between silicontreated and non-treated plants (Watanabe et al, 2004). A study by Kauss et al (2003) conducted on cucumber leaves and investigating the process of plant infection showed that resistance to infection can be acquired by the expression of a protein rich in proline together with the presence of silica at the site of pathogen penetration.…”

Section: Molecular Mechanismmentioning

confidence: 99%

“…By using Agilent 44K oligo DNA arrays, it has been shown that silicon increased signifi cantly the level of photorespiration in rice leaves infected by Cochliobolus miyabeanus (Van Bockhaven et al, 2014). Genome-wide studies on tomato, rice, Arabidopsis and wheat grown in soil amended with silicon and compared to non-amended control plants have shown a diff erential and unique expression of a large number of genes involved in host plant defense mechanisms or metabolism (Watanabe et al, 2004;Fauteux et al, 2006;Chain et al, 2009;Brunings et al, 2009;Ghareeb et al, 2011).…”

Section: Molecular Mechanismmentioning

confidence: 99%

The role of silicon (Si) in increasing plant resistance against fungal diseases

Sakr

2016

Hellenic Plant Protection Journal

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Summary The use of silicon (Si) in agriculture has attracted a great deal of interest from researchers because of the numerous benefits of this element to plants. The use of silicon has decreased the intensity of several diseases in crops of great economic importance. In this study, the relationship between silicon nutrition and fungal disease development in plants was reviewed. The current review underlines the agricultural importance of silicon in crops, the potential for controlling fungal plant pathogens by silicon treatment, the different mechanisms of silicon-enhanced resistance, and the inhibitory effects of silicon on plant pathogenic fungi in vitro. By combining the data presented in this paper, a better comprehension of the relationship between silicon treatments, increasing plant resistance, and decreasing severity of fungal diseases could be achieved.

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Identification of several rice genes regulated by Si nutrition

Cited by 44 publications

References 7 publications

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

Priming of jasmonate-mediated antiherbivore defense responses in rice by silicon

The role of silicon (Si) in increasing plant resistance against fungal diseases

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