Methyl jasmonate induced gene expression in wheat delays symptom development by the crown rot pathogen Fusarium pseudograminearum

Desmond, Olivia J.; Edgar, Cameron I.; Manners, John M.; Maclean, D. J.; Schenk, Peer M.; Kazan, Kemal

doi:10.1016/j.pmpp.2005.12.007

Cited by 110 publications

(93 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, the location of XIPs in these high-Xyl tissues highlights their importance in protecting the inner layer and endosperm from biotic attack. The intermediate fraction also contains a series of PR proteins, which are induced by the defense-signaling elicitor molecules methyl jasmonate and ethylene in response to biotic and abiotic stress (Mauch and Staehelin, 1989;Yu and Muehlbauer, 2001;Desmond et al, 2006). Of these PR proteins, the PR-3 chitinases were well represented in the intermediate fractions, as both precursors and mature proteins.…”

Section: Discussionmentioning

confidence: 99%

“…The vacuole bursts when fungal hyphae penetrate the cell, releasing a high concentration of these chitinases (Mauch and Staehelin, 1989;Singh et al, 2007). The PR proteins wheatwin1 (PR-4) and thaumatin-like protein (PR-5) are also both inducible as part of a chemically elicited defense response (Desmond et al, 2006). PR-4 has a well-described structure and is induced in response to fungal attack .…”

Section: Discussionmentioning

confidence: 99%

“…Cereal grain contains many defense proteins that have been categorized according to their mode of action and structural similarities. A major class of these is the pathogenesis-related (PR) proteins, which include PR-1, PR-2 (b-1,3-glucanases), PR-3 (chitinases), , and PR-5 (thaumatin-like proteins; Selitrennikoff, 2001;Desmond et al, 2006). Other known defense proteins are xylanase inhibitor proteins (XIPs) and a-amylase inhibitor proteins (Mundy et al, 1984;Payan et al, 2003).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Strategic Distribution of Protective Proteins within Bran Layers of Wheat Protects the Nutrient-Rich Endosperm

et al. 2010

View full text Add to dashboard Cite

Bran from bread wheat (Triticum aestivum ‘Babbler’) grain is composed of many outer layers of dead maternal tissues that overlie living aleurone cells. The dead cell layers function as a barrier resistant to degradation, whereas the aleurone layer is involved in mobilizing organic substrates in the endosperm during germination. We microdissected three defined bran fractions, outer layers (epidermis and hypodermis), intermediate fraction (cross cells, tube cells, testa, and nucellar tissue), and inner layer (aleurone cells), and used proteomics to identify their individual protein complements. All proteins of the outer layers were enzymes, whose function is to provide direct protection against pathogens or improve tissue strength. The more complex proteome of the intermediate layers suggests a greater diversity of function, including the inhibition of enzymes secreted by pathogens. The inner layer contains proteins involved in metabolism, as would be expected from live aleurone cells, but this layer also includes defense enzymes and inhibitors as well as 7S globulin (specific to this layer). Using immunofluorescence microscopy, oxalate oxidase was localized predominantly to the outer layers, xylanase inhibitor protein I to the xylan-rich nucellar layer of the intermediate fraction and pathogenesis-related protein 4 mainly to the aleurone. Activities of the water-extractable enzymes oxalate oxidase, peroxidase, and polyphenol oxidase were highest in the outer layers, whereas chitinase activity was found only in assays of whole grains. We conclude that the differential protein complements of each bran layer in wheat provide distinct lines of defense in protecting the embryo and nutrient-rich endosperm.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Strategic Distribution of Protective Proteins within Bran Layers of Wheat Protects the Nutrient-Rich Endosperm

et al. 2010

View full text Add to dashboard Cite

show abstract

“…This information, however, is not surprising, because the PR-5 gene is known to be connected to the JA pathway, which is induced by necrotrophic pathogens (Desmond et al, 2006;Barna et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Induction of Resistance with Benzothiadiazole in Sunflower: a Comparison of Biotrophic vs. Necrotrophic Pathosystems

Körösi

Virányi

Barna

et al. 2016

Acta Phytopathologica et Entomologica Hungarica

View full text Add to dashboard Cite

In the present work we aimed at comparing the effect of benzothiadiazole (BTH) treatment on defence reactions of sunflower plants to downy mildew and white rot diseases. BTH treatment resulted in reduced disease symptoms in biotrophic and in the early stage of the necrotrophic interactions. To get a better insight into the effect of BTH, changes in the activities of polyphenol oxidase and peroxidase enzymes, as well as the expression of the host response-associated sunflower genes were examined in the plants. Inoculation with Plasmopara halstedii enhanced the polyphenol oxidase and peroxidase enzyme activities, while inoculation with Sclerotinia sclerotiorum did it only at 4 dpi. However, most importantly, in each case extracts from BTH pretreated and inoculated plants showed the highest polyphenol oxidase and peroxidase enzyme activities. Similarly, the accumulation of GST and PDF transcripts was detected following inoculations with both biotrophic and necrotrophic pathogens, and again, BTH pre-treatment enhanced GST and defensine gene activities in the inoculated plants. We suggest that induction of enzyme activities, as well as of the elevated expression of GST, PDF and PR5 genes by BTH pre-treatment may be a significant part of the induced resistance of sunflower to downy mildew and white rot (white mold).

show abstract

“…(3)The bran layer of the grain is essentially a barrier that protects the germ and endosperm from bacterial, fungal, viral and insect attack. (4) Wheat bran, produced by milling, mainly composed of cell wall material rich in many nutritionally valuable constituents, such as dietary fiber, vitamin E, proteins and phenolic compounds with antioxidative properties. (5)However, processing conditions and food matrix affect the bioavailability of nutritional factor of wheat bran.…”

Section: Introduction:-mentioning

confidence: 99%

ASSESSMENT OF PHYTOCHEMICALS, Α-Tocopherol, Β-Carotenoid AND ANTIOXIDANT POTENTIAL OF WHEAT BRAN (TRITICUMAESTIVUM).

Gupta¹,

Jangir²,

Sharma³

2016

IJAR

View full text Add to dashboard Cite

Methyl jasmonate induced gene expression in wheat delays symptom development by the crown rot pathogen Fusarium pseudograminearum

Cited by 110 publications

References 44 publications

Strategic Distribution of Protective Proteins within Bran Layers of Wheat Protects the Nutrient-Rich Endosperm

Strategic Distribution of Protective Proteins within Bran Layers of Wheat Protects the Nutrient-Rich Endosperm

Induction of Resistance with Benzothiadiazole in Sunflower: a Comparison of Biotrophic vs. Necrotrophic Pathosystems

ASSESSMENT OF PHYTOCHEMICALS, Α-Tocopherol, Β-Carotenoid AND ANTIOXIDANT POTENTIAL OF WHEAT BRAN (TRITICUMAESTIVUM).

Contact Info

Product

Resources

About