Chlorine-containing natural compounds in higher plants

Engvild, Kjeld C.

doi:10.1016/0031-9422(86)80002-4

Cited by 154 publications

(53 citation statements)

References 128 publications

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“…Aqueous soil Cl inorg is subject to uptake by plants via the root system and translocation within the plant tissues (White and Broadley, 2001). In addition to contributing Cl inorg to the soil, litterfall may represent a substantial source of Cl org to soil systems (Ö berg and Grøn, 1998;Ö berg et al, 2005); various individual Cl org compounds have been isolated from the tissues of higher plants (Engvild, 1986). Small amounts of Cl org likely enter the soil through atmospheric deposition as well (Asplund et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material

Leri

Marcus

Myneni

2007

Geochimica et Cosmochimica Acta

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Section: Introductionmentioning

confidence: 99%

X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material

Leri

Marcus

Myneni

2007

Geochimica et Cosmochimica Acta

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“…The analysis of literature data allows for a conclusion that plants of the Chenopodiaceae family are characterized by a high proportional content of nitrogen-containing compounds, for example, in plants of the Sueda genus, Halostachys and Ephedra are sources of alkaloids of the piperidine and pyrrole, pyrolidinium and morphine groups; however, the content of organic sulfur and organochlorine compounds in the Tamarix genus was not previously reported, although these classes are quite common in the Embryophytes [23,24,25,26,27,28,29,30,31,32,33,34]. In the studied extracts, a large number of aromatic and polyaromatic compounds have been identifi ed; in particular, phthalic acid esters, as well as a number of organic sulfur compounds and nitrogenuous heterocycles [35,36,37,38,39].…”

Section: Resultsmentioning

confidence: 99%

Chemical compositional analysis of the Tamarix hispida aerial part extract obtained in ethanol solutions of different concentration

Iskhanov¹

2018

J Appl Eng Science

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“…Rea, 1982). The other mode of Cl" manipulation is the oxidative formation of organic chlorides, with H"' " consumption (Fenical, 1975;Engvild, 1986).…”

Section: Chlorinementioning

confidence: 99%

BIOCHEMICAL DISPOSAL OF EXCESS H⁺IN GROWING PLANTS?

Raven

1986

New Phytologist

141

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SUMMARY Many data support the view that, when NH4+ [or N2, NH3, or CO(NH2)2] is the N source for plant cell growth, the excess H+ generated in the synthesis of core metabolites is excreted to the bathing medium (biophysical pH‐stat). This paper explores the possibility that a ‘biochemical’ disposal of these excess H+ could occur, thus allowing net NHJ assimilation to take place in the shoot of land plants. A‘biochemical’ H+‐neutralizing pH‐stat requires that a non‐toxic resource be taken into the plant in a form in which metabolism can convert into a non‐toxic product with H+ consumption or OH− production. This possibility was explored for reductive metabolism of B(OH)3, Si (OH)4, H2PO4−, H2AsO4−, O2, SO42, SeO42− and HVO42; and for oxidative metabolism of Cr, Br−, I−, Fe2+ and Mn2+. For B(OH)3 and Si(OH)4, reductive metabolism (even if it were thermo‐dynamically possible, granted the reductants available to plants) does not involve significant 11+ removal. H2PO4− reduction may be thermodynamically possible, but is quantitatively insignificant as an H+ sink in plants. H2AsO4− reduction is probably a detoxification mechanism, and it is not a significant H+ sink in plants for which quantitative data are available. O2 assimilation (reduction) into ‐OH, and thence ≡O+, occurs in anthocyanin synthesis, but not to an extent which disposes of much of the excess H+ produced in growth with NHJ as N source. SO42− reduction in excess of that required by primary, core metabolism (i.e. that leading to amino acids, thylakoid sulpholipid and cell wall esters) can generate OH−, but such ‘secondary’ SO42− metabolism is related to osmoregulation and to chemical defence rather than to H+ disposal per se. The quantity of S metabolism which is ‘negotiable’ is not, apparently, adequate to neutralize a substantial fraction of excess H+ formed during growth. SeO4−2 reduction and assimilation performs largely a detoxification and/or chemical defence role, and the quantities involved (even in Se‐accumulators) do not generate enough OH− to offset much of the excess H+ formed during growth. Vanadate reduction is quantitatively insignificant as an H+ sink. Oxidation of Cl−, Br− and I− in incorporation into C‐halide groups is, in land plants, a quantitatively insignificant process. H+ disposal via HCl volatalization from an aqueous phase of low pH which contains Cl− does not seem to be an important sink for H+ in terrestrial plants. Oxidation of F− to form ≡C‐F usually produces CH2F.COO− with no net H+ consumption. Oxidation of Fe2+ and Mn2+ is H+‐consuming as long as oxides or hydroxides of Fe3 and Mn4+ are not formed. However, the oxides and hydroxides are often formed so that the oxidation processes consume OH− rather than H+. These quantitative considerations, together with those of the availability of starting materials and the toxicity of end products suggest that the H+‐consuming processes, even in combination, probably cannot dispose of all of the H+ generated in growth with NHJ as N source. In general, these H+‐consuming reactions se...

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Chlorine-containing natural compounds in higher plants

Cited by 154 publications

References 128 publications

X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material

X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material

Chemical compositional analysis of the Tamarix hispida aerial part extract obtained in ethanol solutions of different concentration

BIOCHEMICAL DISPOSAL OF EXCESS H⁺IN GROWING PLANTS?

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Chlorine-containing natural compounds in higher plants

Cited by 154 publications

References 128 publications

X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material

X-ray spectromicroscopic investigation of natural organochlorine distribution in weathering plant material

Chemical compositional analysis of the Tamarix hispida aerial part extract obtained in ethanol solutions of different concentration

BIOCHEMICAL DISPOSAL OF EXCESS H+IN GROWING PLANTS?

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BIOCHEMICAL DISPOSAL OF EXCESS H⁺IN GROWING PLANTS?