Hormone-Virus Interactions in Plants

Jameson, Paula E.; Clarke, Sean F.

doi:10.1080/0735-260291044241

Cited by 54 publications

(48 citation statements)

References 114 publications

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“…Decreases in GA 1 level were reported in two uninfected dwarf rice cultivars (Tan-Ginbozu and Waito-C; Kobayashi et al, 1989;Ogawa et al, 1996) and in virus-infected plants (Jameson and Clarke, 2002). Citrus exocortis viroid infection likely reduces the content of the active GA 1 and leads to a dwarf phenotype in Etrog citron.…”

Section: Discussionmentioning

confidence: 99%

“…For many virus diseases, alterations in plant growth were thought to be the result of cytopathic effects leading to changes in plant hormone metabolism upon virus infection (Jameson and Clarke, 2002). Despite extensive research efforts, the host factors that are primary targets for viral proteins in disease formation remain largely elusive.…”

Section: Discussionmentioning

confidence: 99%

“…Plant virus infections often lead to alterations in physiological, biochemical, and metabolic processes, resulting in symptoms such as plant stunting and leaf mottling and/or wrinkling (Jameson and Clarke, 2002). For many virus diseases, alterations in plant growth were thought to be the result of cytopathic effects leading to changes in plant hormone metabolism upon virus infection (Jameson and Clarke, 2002).…”

Section: Discussionmentioning

confidence: 99%

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The Rice Dwarf Virus P2 Protein Interacts with ent-Kaurene Oxidases in Vivo, Leading to Reduced Biosynthesis of Gibberellins and Rice Dwarf Symptoms

et al. 2005

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The mechanisms of viral diseases are a major focus of biology. Despite intensive investigations, how a plant virus interacts with host factors to cause diseases remains poorly understood. The Rice dwarf virus (RDV), a member of the genus Phytoreovirus, causes dwarfed growth phenotypes in infected rice (Oryza sativa) plants. The outer capsid protein P2 is essential during RDV infection of insects and thus influences transmission of RDV by the insect vector. However, its role during RDV infection within the rice host is unknown. By yeast two-hybrid and coimmunoprecipitation assays, we report that P2 of RDV interacts with entkaurene oxidases, which play a key role in the biosynthesis of plant growth hormones gibberellins, in infected plants. Furthermore, the expression of ent-kaurene oxidases was reduced in the infected plants. The level of endogenous GA 1 (a major active gibberellin in rice vegetative tissues) in the RDV-infected plants was lower than that in healthy plants. Exogenous application of GA 3 to RDV-infected rice plants restored the normal growth phenotypes. These results provide evidence that the P2 protein of RDV interferes with the function of a cellular factor, through direct physical interactions, that is important for the biosynthesis of a growth hormone leading to symptom expression. In addition, the interaction between P2 and rice ent-kaurene oxidase-like proteins may decrease phytoalexin biosynthesis and make plants more competent for virus replication. Moreover, P2 may provide a novel tool to investigate the regulation of GA metabolism for plant growth and development.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The Rice Dwarf Virus P2 Protein Interacts with ent-Kaurene Oxidases in Vivo, Leading to Reduced Biosynthesis of Gibberellins and Rice Dwarf Symptoms

et al. 2005

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“…Several lines of evidence suggest that oxylipins play an important role in the development of HR and disease resistance (28,29). Moreover, the application of MeJA on plants was effective in inhibiting the replication of several viruses, including PVY, in compatible pathosystems (30,31,32).…”

mentioning

confidence: 99%

Oxylipin Biosynthesis Genes Positively Regulate Programmed Cell Death during Compatible Infections with the Synergistic Pair Potato Virus X-Potato Virus Y and Tomato Spotted Wilt Virus

García-Marcos

Pacheco

Manzano

et al. 2013

J Virol

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One of the most severe symptoms caused by compatible plant-virus interactions is systemic necrosis, which shares common attributes with the hypersensitive response to incompatible pathogens. Although several studies have identified viral symptom determinants responsible for systemic necrosis, mechanistic models of how they contribute to necrosis in infected plants remain scarce. Here, we examined the involvement of different branches of the oxylipin biosynthesis pathway in the systemic necrosis response caused either by the synergistic interaction of Potato virus X with Potato virus Y (PVX-PVY) or by Tomato spotted wilt virus (TSWV) in Nicotiana benthamiana. Silencing either 9-lipoxygenase (LOX), 13-LOX, or ␣-dioxygenase-1 (␣-DOX-1) attenuated the programmed cell death (PCD)-associated symptoms caused by infection with either PVX-PVY or TSWV. In contrast, silencing of the jasmonic acid perception gene, COI1 (Coronatine insensitive 1), expedited cell death during infection with compatible viruses. This correlated with an enhanced expression of oxylipin biosynthesis genes and dioxygenase activity in PVX-PVY-infected plants. Moreover, the Arabidopsis thaliana double lox1 ␣-dox-1 mutant became less susceptible to TSWV infection. We conclude that oxylipin metabolism is a critical component that positively regulates the process of PCD during compatible plant-virus interactions but does not play a role in restraining virus accumulation in planta.

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“…The PGRs has been applied to alter various characteristics in ornamental plant including the increase or reduction in plant height (Christopher and Lopez, 2010;Francescangeli et al, 2007), increase compactness in plants (Meijon et al, 2009;Rademacher, 1991), an increase in number of flowers (Sajjad et al, 2014;Carey et al, 2013), early flowering (Cardosol et al, 2010;Khaimov and Mizrahi, 2006), increase in number of lateral shoots (Wroblewska and Debicz, 2013;Witomska et al,2010), delay in flowering (Taha, 2012), control of sex ratio in flowers (Gayakvad et al, 2014), delayed senescence (Chang et al, 2003;Duan et al, 2006), increase flower life (Khandaker et al, 2013;Gulzar et al, 2005), induce systemic acquired resistance against diseases (Darras et al, 2011;Dinh et al, 2007), resistance against pathogen (Pozo et al, 2005;Jameson and Clarke, 2002), breaking dormancy (Gashi et al, 2012;Guleryuz et al, 2011), reduce the vernalization requirement (Wang and Walter, 2006), improve seed germination (Rehman and Park, 2000;Khan et al, 2004) and increase vase life (Gholami et al, 2011;Iqbal et al, 2012).…”

mentioning

confidence: 99%

Application of Plant Growth Regulators in Ornamental Plants: A Review

Sajjad¹

2017

PAKJAS

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Hormone-Virus Interactions in Plants

Cited by 54 publications

References 114 publications

The Rice Dwarf Virus P2 Protein Interacts with ent-Kaurene Oxidases in Vivo, Leading to Reduced Biosynthesis of Gibberellins and Rice Dwarf Symptoms

The Rice Dwarf Virus P2 Protein Interacts with ent-Kaurene Oxidases in Vivo, Leading to Reduced Biosynthesis of Gibberellins and Rice Dwarf Symptoms

Oxylipin Biosynthesis Genes Positively Regulate Programmed Cell Death during Compatible Infections with the Synergistic Pair Potato Virus X-Potato Virus Y and Tomato Spotted Wilt Virus

Application of Plant Growth Regulators in Ornamental Plants: A Review

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