The Rubisco Small Subunit Is Involved in Tobamovirus Movement and <i>Tm-22</i>-Mediated Extreme Resistance

Zhao, Jinping; Liu, Qi; Zhang, Haili; Jia, Qi; Hong, Yiguo; Liu, Yule

doi:10.1104/pp.112.209213

Cited by 88 publications

(95 citation statements)

References 68 publications

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“…Recently, NtRbCS was reported to be the host target of potyvirus P3 protein and Tobamovirus multifunctional movement protein for virion replication (Danci et al, 2009) and systemic movement (Zhao et al, 2013). Transiently expressed fluorescence was detected in Nicotiana benthamiana lines co-infiltrated with pABP1-YFP C and pRbCS-YFP N through a bimolecular fluorescence complementation (BiFC) assay (Supplemental Figure 9).…”

Section: Auxin Binding Protein 1 Reinforces Resistance To Sugarcane Mmentioning

confidence: 98%

“…ZmABP1 expression is greatly stimulated by SCMV infection in resistant genotypes, reinforcing resistance to viruses that escaped from the Scmv1 barrier at later stages. As a consequence, ZmRbCS would neither be available for SCMV genome amplification nor utilized for potyvirus long-distance movements (Danci et al, 2009;Zhao et al, 2013). Scmv2 also confers resistance to other potyviruses, such as Maize dwarf mosaic virus and Wheat streak mosaic virus (L€ ubberstedt et al, 2006).…”

Section: Auxin Binding Protein 1 Reinforces Resistance To Sugarcane Mmentioning

confidence: 99%

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Auxin Binding Protein 1 Reinforces Resistance to Sugarcane Mosaic Virus in Maize

Leng

Asp

et al. 2017

Molecular Plant

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Section: Auxin Binding Protein 1 Reinforces Resistance To Sugarcane Mmentioning

confidence: 98%

Section: Auxin Binding Protein 1 Reinforces Resistance To Sugarcane Mmentioning

confidence: 99%

Auxin Binding Protein 1 Reinforces Resistance to Sugarcane Mosaic Virus in Maize

Leng

Asp

et al. 2017

Molecular Plant

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“…In these screens Rubisco small subunit (RbCS) was identified as interacting with ToMV movement protein and SGT1 as interacting with Tm-22, in addition MP-Interacting Protein 1 (MIP1), a group of type I J-domain proteins was found to interact with both ToMV movement protein and Tm-22. By using VIGS and other in vitro and in vivo functional analysis in N. benthamiana, it was shown that MIP1s are required for both virus infection and plant immunity [144]. Furthermore, transgenic N. benthamiana plants expressing Tm-22, provides extreme resistance to ToMV, and VIGS mediated silencing of NbRbCS compromised Tm-22-dependent resistance, suggesting that RbCS of N. benthamiana plays an important role in ToMV movement and plant antiviral defenses [145].…”

Section: Signaling Components Acting Downstream Of Tomato Resistance mentioning

confidence: 99%

“…To identify the tomato proteins that interact with ToMV movement protein or Tm-22-LRR yeast two-hybrid screens were performed and tomato cDNA library was screened, by using ToMV movement protein and Tm-22-LRR as respective baits [144]. In these screens Rubisco small subunit (RbCS) was identified as interacting with ToMV movement protein and SGT1 as interacting with Tm-22, in addition MP-Interacting Protein 1 (MIP1), a group of type I J-domain proteins was found to interact with both ToMV movement protein and Tm-22.…”

Section: Signaling Components Acting Downstream Of Tomato Resistance mentioning

confidence: 99%

“…In addition, by utilizing transgenic tomato plants expressing NahG (encodes for an enzyme that metabolizes SA) a role for SA in Mi-1-mediated resistance to potato aphids was identified [141]. In a VIGS screen performed in N. benthamiana to identify the components of Mi-signaling that can suppress HR triggered by a constitutively active form of Mi-1, Mi-DS4, SERK1 was identified as an important player [142,143].To identify the tomato proteins that interact with ToMV movement protein or Tm-22-LRR yeast two-hybrid screens were performed and tomato cDNA library was screened, by using ToMV movement protein and Tm-22-LRR as respective baits [144]. In these screens Rubisco small subunit (RbCS) was identified as interacting with ToMV movement protein and SGT1 as interacting with Tm-22, in addition MP-Interacting Protein 1 (MIP1), a group of type I J-domain proteins was found to interact with both ToMV movement protein and Tm-22.…”

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confidence: 99%

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Resistance-Gene-Mediated Defense Responses against Biotic Stresses in the Crop Model Plant Tomato

Chaudhary¹,

Hs²

2017

J Plant Pathol Microbiol

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Complex series of defense response activation, consistent with the studies conducted in the model plant Arabidopsis thaliana, has been demonstrated in tomato during incompatible pathogen/pest interactions. During the past two decades, numerous tomato genes have been identified conferring resistance to diverse pathogens/ pests in a gene-for-gene manner. A few of these cloned resistance (R)-genes (Cf and Pto) have been extensively studied and excellent existing reviews describe R-gene function, interacting proteins and the mechanism of Avirulence effector perception. Recent comprehensive gene expression analysis of tomato responses to biotic stresses resulted in identification of genes and potential molecular processes that are associated with several of the tomato R-genemediated resistance responses. The purpose of this review is to provide an overview of tomato R-gene-mediated defense responses to different pathogens/pests together with the components involved in the organization of this highly complex network of plant defenses. Global transcriptome profiling is an important initial step for dissecting biological systems particularly with systems where not much is known about the molecular basis of the resistance response. The enrichment of the tomato EST databases initiated several genomewide profiling studies [32][33][34][35]. This facilitated significant progress in the characterization of tomato incompatible responses to Avr pathogens, contributing to future gene identification and to the understanding of the potential molecular processes that are associated with the different tomato R-gene-mediated resistances [33]. With the advent of next generation sequencing technologies, and the tomato genome sequence [36], additional genome wide studies have been conducted. With a genome sequence and a high-density linkage and molecular maps [37], combined with being a host for numerous pathogens and pests, tomato has emerged as a powerful model system for crop plant defense response studies. Moreover, the introgression of R-genes from wild species into cultivated tomato provides a unique opportunity to study different resistance mechanisms against very diverse biotic agents in a single plant. In this review, we summarize the current understanding of R-genes in tomato and the downstream signaling components that are critical for activating defense responses. In addition, we discuss the current and future technologies that will significantly enhance our knowledge about tomato-pathogen interactions and will provide alternative strategies to develop a sustainable resistance. Tomato Resistance Genes and their Modes of ActionHost resistance is an important component of a sustainable disease management system [38]. It is an environmentally benign method that can be used as an alternative to chemicals, as their applicability against Verticillium. The Ve locus contains two closely linked and inversely oriented genes, Ve1 and Ve2, both encoding a RLP-type cell surface receptor. Ve1 R-gene provides resistance against ra...

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Phloem Long‐Distance Trafficking of RNAs and Proteins

Xoconostle‐Cázares

Martínez-Navarro

Ruíz-Medrano

2016

Encyclopedia of Life Sciences

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The vascular tissue has been essential for the evolutionary radiation of land plants, and has allowed them to colonise a wide range of habitats. The phloem is involved in the distribution of fixed carbon throughout the whole plant. The concept of this tissue as a central distributor of signals that regulate plant development and responses to environmental cues has emerged recently. Indeed, several phenomena, such as post‐transcriptional gene silencing, flowering and tuber induction, as well as systemic acquired resistance to pathogens rely on signals, originating in source leaves, and transported via the phloem to systemic tissues. Considering that the phloem translocation stream contains a large array of macromolecules. Given that the functional phloem consists of interconnected enucleate cells, the sieve elements (SEs), the majority of proteins and ribonucleic acids (RNAs) found in phloem sap exudates must originate from the adjoining companion cell (CC). While several proteins play a role in the maintenance of the SEs, it is possible that several species of proteins and RNAs function in long‐distance signalling. In this article the current state of the art of this subject is described, as well as perspectives and possible applications for crop improvement. Key Concepts The vascular tissue consists of xylem and phloem. The xylem is composed of vessels that are dead cells upon maturity that transport mineral nutrients from roots to shoots. The phloem is composed of vessels formed from enucleated living cells involved in the transport of fixed carbon from photosynthetic to heterotrophic organs. The phloem is involved in the delivery of signals that control development as well as responses to external stimuli, such as defence response, post‐transcriptional gene silencing and response to phosphate starvation. Viruses and viroids are transported through the phloem during systemic infection. These probably take advantage of a system enabling long‐distance transport of endogenous proteins and RNAs. The phloem translocation stream contains a wide variety of proteins and RNAs, some of which appear to have a signalling function. RNA and protein exchange can occur between plant pathogenic fungi and parasitic plants and their hosts. Knowledge of this RNA and protein phloem transport system can have applications for crop improvement.

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The Rubisco Small Subunit Is Involved in Tobamovirus Movement and Tm-22-Mediated Extreme Resistance

Cited by 88 publications

References 68 publications

Auxin Binding Protein 1 Reinforces Resistance to Sugarcane Mosaic Virus in Maize

Auxin Binding Protein 1 Reinforces Resistance to Sugarcane Mosaic Virus in Maize

Resistance-Gene-Mediated Defense Responses against Biotic Stresses in the Crop Model Plant Tomato

Phloem Long‐Distance Trafficking of RNAs and Proteins

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