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95 results for “Glucosinolates”
Data from: The role of glucosinolates and the jasmonic acid pathway in resistance of Arabidopsis thaliana against molluskan herbivores
Although slugs and snails play important roles in terrestrial ecosystems and cause considerable damage on a variety of crop plants, knowledge about the mechanisms of plant immunity to mollusks is limited. We found slugs to be natural herbivores of Arabidopsis thaliana and therefore investigated possible resistance mechanisms of this species against several molluskan herbivores. Treating wounded leaves with the mucus residue ("slime trail") of the Spanish slug Arion lusitanicus increased wound-induced jasmonate levels, suggesting the presence of defense elicitors in the mucus. Plants deficient in jasmonate biosynthesis and signaling suffered more damage by molluskan herbivores in the laboratory and in the field, demonstrating that JA-mediated defenses protect A. thaliana against slugs and snails. Furthermore, experiments using A. thaliana mutants with altered levels of specific glucosinolate classes revealed the importance of aliphatic glucosinolates in defending leaves and reproductive structures against mollusks. The presence in mollusk feces of known and novel metabolites arising from glutathione conjugation with glucosinolate hydrolysis products suggests that molluskan herbivores actively detoxify glucosinolates. Higher levels of aliphatic glucosinolates were found in plants during the night compared to the day, which correlated well with the nocturnal activity rhythms of slugs and snails. Our data highlight the function of well-known anti-herbivore defense pathways in resistance against slugs and snails and suggest an important role for the diurnal regulation of defense metabolites against nocturnal molluskan herbivores.
Arabidopsis Glutathione-S-Transferases GSTF11 and GSTU20 function in Aliphatic Glucosinolate Biosynthesis
<p>GSH conjugation with intermediates is required for the biosynthesis of glucosinolate (GSL) by serving as a sulfur supply. Glutathione-S-transferases (GSTs) primarily work on GSH conjugation, suggesting their involvement in GSL metabolism. Although several GSTs, including GSTF11 and GSTU20, have been recently postulated to act in GSL biosynthesis, molecular evidence is lacking. Here, we demonstrated that <i>GSTF11</i> and <i>GSTU20</i> play nonredundant, although partially overlapping, roles in aliphatic GSL biosynthesis. In addition, <i>GSTU20</i> plays a more important role than<i> GSTF11</i>, which is manifested by the greater loss of aliphatic GSLs associated with <i>GSTU20</i> mutant and a greater number of differentially expressed genes in <i>GSTU20</i> mutant compared to <i>GSTF11</i> mutant. Moreover, a double mutation leads to a greater aggregate loss of aliphatic GSLs, suggesting that <i>GSTU20</i> and <i>GSTF11</i> may function in GSL biosynthesis in a dosage-dependent manner. Together, our results provide direct evidence that <i>GSTU20</i> and <i>GSTF11</i> are critically involved in aliphatic GSL biosynthesis, filling the knowledge gap that has been speculated in recent decades.</p>
P1-P15_unict_utm_glucosinolate_qPCR
<p>P1-P15_unict_utm genes in glucosinolate pathway qPCR data</p>
Fig. 2 in Investigation of glucosinolates in the desert plant Ochradenus baccatus (Brassicales: Resedaceae). Unveiling glucoochradenin, a new arabinosylated glucosinolate
Fig. 2. Glucosinolates identified in the O. baccatus root.
Fig. 19 in Glucosinolate structural diversity, identification, chemical synthesis and metabolism in plants
Fig. 19. Retrosynthetic scheme for glucosinolate synthesis.
Fig. 9 in Glucosinolate structural diversity, identification, chemical synthesis and metabolism in plants
Fig. 9. Illustrative examples of trivial names of glucosinolates. MYR, myrosinase.
Data from: The role of glucosinolates and the jasmonic acid pathway in resistance of Arabidopsis thaliana against molluskan herbivores
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Data from: Variations in the glucosinolates of the individual edible parts of three stem mustards (Brassica juncea)
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Data from: Root and shoot glucosinolate allocation patterns follow optimal defence allocation theory
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Data from: Locally and systemically induced glucosinolates follow optimal defence allocation theory upon root herbivory
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Arabidopsis Glutathione-S-Transferases GSTF11 and GSTU20 function in Aliphatic Glucosinolate Biosynthesis
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The role of a glucosinolate-derived nitrile in plant immune responses
GEO Series GSE139089. Arabidopsis thaliana. 12 samples. Type: Expression profiling by array.
Nutrigenomic effects of glucosinolates on liver, muscle and distal kidney of Atlantic salmon
GEO Series GSE84288. Salmo salar; Oncorhynchus mykiss. 30 samples. Type: Expression profiling by array.
Partial deficiency of isoleucine impairs alters transcript levels of the genes involved in branched-chain amino acid and glucosinolate metabolism in Arabidopsis
GEO Series GSE42060. Arabidopsis thaliana. 6 samples. Type: Expression profiling by array.
Data from: Asymmetric adaptation to indolic- and aliphatic-glucosinolates in the B and Q sibling species of Bemisia tabaci (Hemiptera: Aleyrodidae)
The role glucosinolates play in defending plants against delicate phloem feeders such as aphids and whiteflies is currently not clear as these herbivores may avoid bringing glucosinolates from the phloem sap into contact with myrosinase enzymes. Here, we investigated the effects of high levels of aliphatic- and indolic-glucosinolates on life history traits and detoxification gene expression in two sibling species, B and Q, of the whitefly Bemisia tabaci. High levels of aliphatic-glucosinolates decreased the average oviposition rate of both species, and reduced the survival and developmental rate of Q nymphs. High levels of indolic-glucosinolates decreased the oviposition rate and survival of nymphal stages of the B species and the developmental rate of both species. Molecular analyses revealed two major asymmetries between the B and Q species. First, specific GST genes (BtGST1 and BtGST2) were significantly induced during exposure to indolic-glucosinolates only in Q. This may reflect the genes putative involvement in indolic-glucosinolates detoxification and explain the species' good performance on plants accumulating indolic-glucosinolates. Second, the constitutive expression of eight of the ten detoxification genes analyzed was higher in the Q species than in the B species. Interestingly, four of these genes were induced in B in response to high levels of glucosinolates. It seems, therefore, that the B and Q species differ in their "optimal defense strategy". B utilizes inducible defenses which are profitable if the probability of experiencing the stress is small and its severity is low, while Q invests significant resources in being always "ready" for a challenge.
Data from: Asymmetric adaptation to indolic- and aliphatic-glucosinolates in the B and Q sibling species of Bemisia tabaci (Hemiptera: Aleyrodidae)
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Gene expression profiling of the Arabidopsis glucosinolate deficient mutants, ref5-1 and ref2-1 and med5 mutants
GEO Series GSE99581. Arabidopsis thaliana. 18 samples. Type: Expression profiling by high throughput sequencing.
ABC1K2 is involved in stress response and glucosinolate modification during seed development in Arabidopsis thaliana
GEO Series GSE299982. Arabidopsis thaliana. 6 samples. Type: Expression profiling by array.
Dynamic histone modifications establish the two phase kinetics of glucosinolates against wounding stress in Arabidopsis plant
GEO Series GSE239725. Arabidopsis thaliana. 18 samples. Type: Expression profiling by high throughput sequencing.
The glucosinolate metabolite 1-methoxy-3-indolylmethyl alcohol induces a gene expression profile in mouse liver similar to the expression signature caused by known genotoxic hepatocarcinogens
GEO Series GSE61494. Mus musculus. 23 samples. Type: Expression profiling by array.
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