Increased Sulfur Precursors and Volatiles Production by the Leek Allium porrum in Response to Specialist Insect Attack

Dugravot, Sébastien; Mondy, Nathalie; Mandon, N.; Thibout, É.

doi:10.1007/s10886-005-5287-0

Cited by 28 publications

(30 citation statements)

References 46 publications

(50 reference statements)

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“…In the current study, the quantity of alliin was increased in garlic seedlings pretreated with isolate 153 and challenged with Sc. A similar result was reported by Dugravot et al () in leek, where the quantity of nonprotein sulphur amino acids, the precursors of volatile thiosulphinates and disulphides, from leek was increased in association with leek moth induction of plant defence responses. Thus, endophytic bacteria 153 may potentiate garlic defence responses by enhancing the production of alliin.…”

Section: Discussionsupporting

confidence: 89%

White rot disease protection and growth promotion of garlic (Allium sativum) by endophytic bacteria

et al. 2019

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Thirty‐five bacterial isolates, recovered from the healthy bulbs of Allium sativum that grow in different sites of China, were screened for their ability to produce hydrolytic enzymes and metabolites and to dissolve inorganic phosphorus in vitro. These 35 endophytes inhibited the growth of the causal agent of white rot disease, Sclerotium cepivorum (Sc), by 19–64%. The isolates 153 (Bacillus siamensis) (Bs) and 136 (Streptomyces setonii) (Ss) were found to be the most effective in decreasing Sc disease incidence, both by 66%. In addition, there was a significant enhancement in the growth of garlic plants pretreated with isolates 153 Bs and 136 Ss. Isolate 136 could not produce indole‐3‐acetic acid (IAA) and did not exhibit an inorganic phosphorus solubilization ability in vitro. Thus, growth promotion by this Streptomyces sp. is likely to be mediated by a different, and perhaps novel, mechanism to that typically associated with growth promoting bacteria. An increase in expression of alliin lyase 2 was found in garlic plants treated with 153 Bs. By extension, the quantity of the antimicrobial sulphoxide, alliin, was also increased in 153 Bs‐treated and Sc‐inoculated plants, relative to the Sc‐inoculated controls. These results indicated that this bacterial endophyte might protect A. sativum not only by direct antibiosis, but also by enhancing the expression of alliin lyase 2 and the concomitant production of alliin.

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Section: Discussionsupporting

confidence: 89%

White rot disease protection and growth promotion of garlic (Allium sativum) by endophytic bacteria

et al. 2019

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“…In the first study, Reddy et al (2002) found DMDS in the frass of P. xylostella that was attractive to C. plutellae and C. carnea in a Y-tube olfactometer setup. In the second, the parasitoid wasp D. pulchellus was attracted by a blend of odors coming from attacked leeks (that emit thiosulfinates) and odors of A. assectella larval frass (Dugravot et al 2005;Dugravot and Thibout 2006), the latter material being known to emit a high concentration of DMDS (Auger et al 1989a). Although DMDS appears to be present in interactions that involve sulfur-containing plants and their associate herbivorous species, little is known about its importance as a cue at the third trophic level (i.e., predators and parasitoids).…”

Section: Discussionmentioning

confidence: 99%

Identification of a Widespread Monomolecular Odor Differentially Attractive to Several Delia Radicum Ground-dwelling Predators in the Field

et al. 2007

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Dimethyl disulfide (DMDS) was identified as a major volatile constituent of Brassica napus roots heavily infested by Delia radicum, the cabbage root fly. Attractiveness of this widespread compound was tested in the field in a naturally complex odorous environment. By using an original setup especially designed for ground dwelling beetles, different concentrations of the pure molecule as well as attractiveness of the natural blend emitted by the rotten part of infested roots were tested simultaneously. The use of general linear model (GLM) statistics permitted us to finely discriminate the responses among the different treatments. The main predators of D. radicum (i.e., two staphylinids Aleochara bilineata and Aleochara bipustulata and carabid beetles of the genus Bembidion) were significantly attracted by DMDS, but responded in different ways to the natural blend and to the different concentrations tested. The dose-response curves were similar for the two staphylinids. However, whereas A. bilineata was more attracted by the natural volatile blend than by its preferred DMDS concentration, A. bipustulata was attracted as much by the natural blend as by its preferred DMDS concentration. Carabid beetles exhibited a different response. They were not attracted by the natural blend, but responded to a wider range of DMDS concentrations that included low concentrations that did not attract the staphylinid beetles. These results are discussed according to the potential resources searched by each taxon studied and their specificity for the resources. The possible use of DMDS for enhancing biological control of D. radicum is mentioned.

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“…It is reported that the artificial and natural damage to B. napus (L.) and B. juncea (L.) roots led to highest TMT activities in their leaves (van Dam et al, 2012). Existing data indicate that the physical conditions and herbivorous insects are extremely potent in the release of sulfur volatiles (Dugravot et al, 2005;Rouseff et al, 2008). In M. persicae-A.…”

Section: Discussionmentioning

confidence: 99%

Myzus persicae Feeding on Water Stressed-Arabidopsis Affects the Emission Profile of Plant Volatile Organic Compounds

Truong¹,

Delaplace²,

Brostaux³

et al. 2014

JEE

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Emissions of volatile organic compounds (VOCs) by water-controlled or water-stressed Arabidopsis thaliana infested or not infested with Myzus persicae were evaluated by headspace solid phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). The infestations were maintained for 0-24 h, 24-48 h, and 48-72 h, and the emission profile for each time period was determined. Under these controlled conditions, the proportion of 4-methylpentyl isothiocyanate and dimethyl disulfide emitted by aphid-infested, water-stressed Arabidopsis was greater than that for aphid-infested water-controlled Arabidopsis over the 48-72 h sampling period. The proportion of terpene emitted by aphid-infested water-stressed plants also significantly increased compared with the other treatments over the three assayed sampling periods. In contrast, the proportion of 2-ethylhexanal (the only detected aldehyde) and ketones for the water-controlled plants generally remained high following aphid infestation. Taken together, these original data ascertain that abiotic factors can greatly interact to biotic stresses to alter the VOC emission profiles of plants.

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Increased Sulfur Precursors and Volatiles Production by the Leek Allium porrum in Response to Specialist Insect Attack

Cited by 28 publications

References 46 publications

White rot disease protection and growth promotion of garlic (Allium sativum) by endophytic bacteria

White rot disease protection and growth promotion of garlic (Allium sativum) by endophytic bacteria

Identification of a Widespread Monomolecular Odor Differentially Attractive to Several Delia Radicum Ground-dwelling Predators in the Field

Myzus persicae Feeding on Water Stressed-Arabidopsis Affects the Emission Profile of Plant Volatile Organic Compounds

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