A survey on basal resistance and riboflavin-induced defense responses of sugar beet against Rhizoctonia solani

Taheri, Parissa; Tarighi, Saeed

doi:10.1016/j.jplph.2011.01.001

Cited by 79 publications

(47 citation statements)

References 46 publications

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“…Together, these findings point to the importance of peroxidase-dependent phenolics production as a defense mechanism involved in basal resistance in our pathosystem. Several reports likewise suggest that priming of peroxidase transcripts or activities in various plants which contributes to phenolics-mediated resistance against necrotrophic phytopathogens [10,24]. Chitinase gene could activate the expression of pathogenesis-related (PR) genes, subsequently enhancing transgenic plant resistance to necrotrophic pathogens [25,26].…”

Section: Discussionmentioning

confidence: 99%

The Role of Pathogenesis-Related Proteins in the Tomato-Rhizoctonia solani Interaction

Taheri

Tarighi

2012

Journal of Botany

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Rhizoctonia solani is one of the most destructive pathogens causing foot rot disease on tomato. In this study, the molecular and cellular changes of a partially resistant (Sunny 6066) and a susceptible (Rio Grande) tomato cultivar after infection with necrotrophic soil-borne fungus R. solani were compared. The expression of defense-related genes such as chitinase (LOC544149) and peroxidase (CEVI-1) in infected tomato cultivars was investigated using semiquantitative reverse transcription-polymerase chain reaction (RT-PCR). This method revealed elevated levels of expression for both genes in the partially resistant cultivar compared to the susceptible cultivar. One of the most prominent facets of basal plant defense responses is the formation of physical barriers at sites of attempted fungal penetration. These structures are produced around the sites of potential pathogen ingress to prevent pathogen progress in plant tissues. We investigated formation of lignin, as one of the most important structural barriers affecting plant resistance, using thioglycolic acid assay. A correlation was found between lignification and higher level of resistance in Sunny 6066 compared to Rio Grande cultivar. These findings suggest the involvement of chitinase, peroxidase, and lignin formation in defense responses of tomato plants against R. solani as a destructive pathogen.

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Section: Discussionmentioning

confidence: 99%

The Role of Pathogenesis-Related Proteins in the Tomato-Rhizoctonia solani Interaction

Taheri

Tarighi

2012

Journal of Botany

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“…asparagi growth (He et al 2001). Application of PAL inhibitors suppressed basal resistance of sugar beet against Rhizoctonia solani (Taheri and Tarighi 2011).…”

Section: Involvement Of Sugars In Plant Defense Responses During Infementioning

confidence: 99%

The role of sugar signaling in plant defense responses against fungal pathogens

2014

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“…Furthermore, thiamine confers systemic acquired resistance (SAR) through priming or elicitation competency (Goyer 2010), depending on salicylic acid, Plant amino acid-derived vitamins 815 reactive oxygen species (ROS) and hence cellular redox signaling (Ahn et al 2005(Ahn et al , 2007Zhou et al 2013b). Riboflavin-deficient tobacco plants present compromised radical production (ROS and reactive nitrogen species) and hypersensitive cell death response (Asai et al 2010), while increased levels of riboflavin act as an elicitor of SAR (Dong and Beer 2000) via the induction of ROS and hormonal signaling transduction pathways, promoting the phenylpropanoid pathway and phenolics accumulation Taheri and Tarighi 2011;Li et al 2012b). Curiously, diminishing free flavins (through the ectopic expression of a flavin-binding protein) also elevates the levels of H 2 O 2 enhancing plant resistance to bacterial pathogens (Deng et al 2011).…”

Section: Abiotic and Biotic Stress Tolerancementioning

confidence: 99%

Plant amino acid-derived vitamins: biosynthesis and function

Miret

Munné‐Bosch

2013

Amino Acids

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Vitamins are essential organic compounds for humans, having lost the ability to de novo synthesize them. Hence, they represent dietary requirements, which are covered by plants as the main dietary source of most vitamins (through food or livestock's feed). Most vitamins synthesized by plants present amino acids as precursors (B1, B2, B3, B5, B7, B9 and E) and are therefore linked to plant nitrogen metabolism. Amino acids play different roles in their biosynthesis and metabolism, either incorporated into the backbone of the vitamin or as amino, sulfur or one-carbon group donors. There is a high natural variation in vitamin contents in crops and its exploitation through breeding, metabolic engineering and agronomic practices can enhance their nutritional quality. While the underlying biochemical roles of vitamins as cosubstrates or cofactors are usually common for most eukaryotes, the impact of vitamins B and E in metabolism and physiology can be quite different on plants and animals. Here, we first aim at giving an overview of the biosynthesis of amino acid-derived vitamins in plants, with a particular focus on how this knowledge can be exploited to increase vitamin contents in crops. Second, we will focus on the functions of these vitamins in both plants and animals (and humans in particular), to unravel common and specific roles for vitamins in evolutionary distant organisms, in which these amino acid-derived vitamins play, however, an essential role.

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A survey on basal resistance and riboflavin-induced defense responses of sugar beet against Rhizoctonia solani

Cited by 79 publications

References 46 publications

The Role of Pathogenesis-Related Proteins in the Tomato-Rhizoctonia solani Interaction

The Role of Pathogenesis-Related Proteins in the Tomato-Rhizoctonia solani Interaction

The role of sugar signaling in plant defense responses against fungal pathogens

Plant amino acid-derived vitamins: biosynthesis and function

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