Cytokinins in <i>Rhizopogon roseolus</i> Secretion of N-[9-(β-d-Ribofuranosyl-9H) Purin-6-Ylcarbamoyl]Threonine into the Culture Medium

Laloue, Michel; Hall, Ross H.

doi:10.1104/pp.51.3.559

Cited by 22 publications

(2 citation statements)

References 8 publications

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“…The volatile organic compounds analyzed belong to the following species: Mycena chlorinella, Rhizopogon roseolus, Pholiota spumosa, Telephora terrestris, Hygrocybe coccinea, Geastrum triplex, Ramaria flaccida and Laccaria laccata [5]. Chemical antecedents of non-volatile compounds in six of the eight studied species already exist [6][7][8][9][10][11][12][13][14].…”

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Volatile Organic Components from Fresh Non-edible Basidiomycetes Fungi

Piovano

Garbarino

Sánchez

et al. 2009

Natural Product Communications

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The compounds responsible for the characteristic odor of eight fresh non-edible Basidiomycetes fungi were evaluated. The volatile organic compounds from the fresh samples present in the headspace of a sealed vial were determined by solid-phase microextraction gas chromatography-mass spectrometry, using a PDMS/DVB fiber. A total of twenty-eight components were identified, the most frequent being 1-octen-3-ol and 3-octanone.

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confidence: 99%

Volatile Organic Components from Fresh Non-edible Basidiomycetes Fungi

Piovano

Garbarino

Sánchez

et al. 2009

Natural Product Communications

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“…The ratios of activity of both the degradation enzyme and the hydroxylation enzyme probably vary with the maturity of the corn kernel. trans-RZ accumulates in larger quantities in early stages of fruiting and seems to disappear in the more mature stages (21,23 (15)). …”

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trans-Ribosylzeatin

Miura¹,

Hall²

1973

Plant Physiol.

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When [8-14C]-N-(A'-isopentenyl) adenosine is incubated with the endosperm of corn (2 weeks after pollination), it is converted to ['4C]-N6-(4-hydroxy-3-methylbut-2-trans-enyl) adenosine, trans-ribosylzeatin. This biosynthetic step, N6-(A2-isopentenyl)adenosine to ribosylzeatin, also occurs in the mycorrhizal fungus, Rhizopogon roseolus.Cytokinin activity has been detected in extracts of various plants and plant organs. An active component in the extracts has been identified as trans-ribosylzeatin, trans-RZ2 (Fig. 1), in the case of immature fruit (16,17,20) and chicory root (2), and as its dihydro derivative in the case of Lupin (14) (see review by Kende (12) for a more detailed account). Recently Dyson and Hall (5) reported the presence of i6Ado in an extract of an autonomous strain of tobacco tissue. Of these naturally occurring cytokinins, trans-RZ exhibits the greatest activity in the tobacco callus bioassay system (9).As part of a study of the metabolism of cytokinins, we have investigated the biosynthesis of trans-RZ, and in this paper we describe its synthesis from the precursor, i6Ado. We chose systems known to contain free trans-RZ, a mycorrhizal fungus, Rhizopogon roseolus (22) and corn kernels (16,20

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