Frenching of Ragweed (<i>Ambrosia artemisiifolia</i> L.)

Jones, Linus H.

doi:10.1104/pp.28.1.123

Cited by 4 publications

(6 citation statements)

References 5 publications

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“…The soilborne fungus Macrophomina phaseolina (Tassi) Gold has also been shown to cause frenching symptoms on inoculated tobacco seedlings 7. Other plants (petunia, eggplant, ragweed, sorrel and squash) developed frenching symptoms when exposed to frenching soil 8. However, frenching symptoms were not elicited on pepper ( Capsicum frutescens L.) or on the weeds Galinsoga parviflora Cav., Polygonum pennsylvanicum L., Portulaca oleracea L. or several genera of the grass family.…”

Section: Rationalementioning

confidence: 99%

Methods for selecting hypervirulent biocontrol agents of weeds: why and how

Sands

Pilgeram

2009

Pest Management Science

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A considerable number of plant pathogens have been studied for their possible use in weed control. Some have proven virulent enough to control weed species and to compete commercially with chemical herbicides. However, most pathogens of weeds are not useful in their wild form because they are not sufficiently host-specific and/or virulent. The authors believe that these barriers can be overcome. The present research has focused on the inhibitory effects of certain amino acids on the growth and development of specific plants. Pathogens that overproduce these selected amino acids can be easily selected from a pool of spontaneous mutants. Such mutants can have increased pathogenicity to their target weed and enhanced field performance as biocontrol agents. Enhancement of biocontrol efficacy in three separate pathogen-host systems, two with Fusarium and one with Pseudomonas, has already been reported. It is proposed to use the same technology to enhance the biocontrol efficacy of the two species of Fusarium that are host-specific pathogens of the broomrape group of parasitic weeds. The stepwise approach outlined can lead to obtaining enhanced biocontrol agents capable of producing inhibitory levels of selected amino acids in situ. It is proposed that these approaches, in combination with other methods of virulence enhancement, will lead to sustainable systems of biological control of parasitic weeds.

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Section: Rationalementioning

confidence: 99%

Methods for selecting hypervirulent biocontrol agents of weeds: why and how

Sands

Pilgeram

2009

Pest Management Science

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“…The structures of the sesquiterpene lactones ambrosin and artesovin were assigned on the basis of UV-Vis, IR, 1 H-NMR, 13 C-NMR and mass spectral data. Artesovin (3,6,9a-trimethyl-3,3a,4,5,6,6a-hexahydroazuleno[4,5-b]furan--2,9(9aH,9bH)-dione) (2). White crystals; m.p.…”

Section: Genotoxic Activity Of the Pollen Acetone Extractmentioning

confidence: 99%

“…1 Ambrosia is conquering Europe with enormous speed due to the ability of its pollen to travel extremely fast, up to 300 km h -1 , if the wind is favourable. [2][3][4][5] Various measurements and testing have shown that the pollen concentrations in the European air have increased by up to 5 times in the last 10 years.…”

Section: Introductionmentioning

confidence: 99%

Chemical composition and biological activity of the acetone extract of Ambrosia artemisiifolia L. pollen

Solujić

Sukdolak

Vuković

et al. 2008

JSCS

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In this study, the chemical components, antimicrobial and genotoxic biological activities of the acetone extract of Ambrosia artemisiifolia L. pollen were examined. Two lactones were identified: ambrosin and artesovin. The antimicrobial activity of the acetone extract of A. artemisiifolia L. pollen was examined on ten different bacterial species using the disc diffusion method and the microdilution method in Mueller-Hinton broth dilution. The minimal inhibitory concentration of the acetone extract of A. artemisiifolia pollen varied between 1.25-6.50 mg mL-1. The genotoxic effect of the acetone extract of A. artemisiifolia pollen on a eukaryotic model system Drosophila melanogaster was investigated using the SLRL test.

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“…[23] The rat monoclonal antibody LM5 is knownt ob ind b-1,4-linked galactans,a nd has been generated by immunization of rats with a b-1,4-Gal 4 -BSA neoglycoprotein. [24] The data in Ta ble 1c learly shows that LM5 exclusively binds the linear galactans 1-3.B ranching is not tolerated and the fact that at erminal arabinan (oligosaccharide 4)e liminates bindings hows that the LM5 epitope most probably involves the non-reducing end galactose residue. LM6, another rat monoclonal, raised by immunization with aB SA neoglycoconjugate andp opularf or immunofluorescent microscopy of plant tissue is selectivef or arabinans and is included herein as ac ontrol to rule out unspecific binding during the array screening.…”

mentioning

confidence: 92%

Synthesis of β‐1,4‐Linked Galactan Side‐Chains of Rhamnogalacturonan I

Andersen

Kračun²,

Rydahl³

et al. 2016

Chemistry A European J

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The synthesis of linear‐ and (1→6)‐branched β‐(1→4)‐d‐galactans, side‐chains of the pectic polysaccharide rhamnogalacturonan I is described. The strategy relies on iterative couplings of n‐pentenyl disaccharides followed by a late stage glycosylation of a common hexasaccharide core. Reaction with a covalent linker and immobilization on N‐hydroxysuccinimide (NHS)‐modified glass surfaces allows the generation of carbohydrate microarrays. The glycan arrays enable the study of protein–carbohydrate interactions in a high‐throughput fashion, demonstrated herein with binding studies of mAbs and a CBM.

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Frenching of Ragweed (Ambrosia artemisiifolia L.)

Cited by 4 publications

References 5 publications

Methods for selecting hypervirulent biocontrol agents of weeds: why and how

Methods for selecting hypervirulent biocontrol agents of weeds: why and how

Chemical composition and biological activity of the acetone extract of Ambrosia artemisiifolia L. pollen

Synthesis of β‐1,4‐Linked Galactan Side‐Chains of Rhamnogalacturonan I

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