Effect of aminocyclopropane carboxylic acid and aminoethoxyvinylglycine on ethylene production by ectomycorrhizal fungi

Aminoethoxyvinylglycine, an inhibitor of ethylene production in higher plants, does not inhibit methionine-induced ethylene production by the ectomycorrhizal fungus Laccaria laccata (Scop, ex Fr.) Berk. & Br. Aminocyclopropane carboxylic acid is not a precursor of ethylene formation by L. laccata or Hebeloma crustiliniforme.

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Effect of three ectomycorrhizal fungi on growth and phosphorus uptake of Pinus silvestris seedlings at increasing phosphorus levels

Canadian Journal of Botany ◽

10.1139/b86-365 ◽

1986 ◽

Vol 64 (11) ◽

pp. 2753-2757 ◽

Cited By ~ 15

Author(s):

A. Tyminska ◽

F. Le Tacon ◽

J. Chadoeuf

Keyword(s):

Ectomycorrhizal Fungi ◽

Phosphorus Uptake ◽

Ectomycorrhizal Fungus ◽

Laccaria Laccata ◽

Pinus Silvestris ◽

Thelephora Terrestris ◽

Intensity Of Infection ◽

Hebeloma Crustuliniforme ◽

Different Levels ◽

Phosphorus Levels

The objective of this study was to determine the different effects of three ectomycorrhizal fungi (Laccaria laccata, Hebeloma crustuliniforme, and Thelephora terrestris) on the growth and mineral nutrition of Pinus silvestris at different levels of soluble phosphorus. Even a low intensity of infection by Laccaria laccata stimulated Pinus silvestris growth greatly. The ability of this ectomycorrhizal fungus to increase Pinus silvestris growth seemed to be more related to its capacity to produce growth substances than to its capacity to stimulate phosphorus uptake. The poor efficiency of Hebeloma crustuliniforme compared with Laccaria laccata at any level of phosphorus could result from differences in diversion of carbohydrates from the host to fungal structures.

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Effect of Laccaria bicolor strains inoculated on Douglas-fir (Pseudotsuga menziesii) several years after nursery inoculation

Canadian Journal of Forest Research ◽

10.1139/x99-221 ◽

2000 ◽

Vol 30 (3) ◽

pp. 360-371 ◽

Cited By ~ 10

Author(s):

M -A Selosse ◽

D Bouchard ◽

F Martin ◽

F Le Tacon

Keyword(s):

Pseudotsuga Menziesii ◽

Ectomycorrhizal Fungi ◽

Ectomycorrhizal Fungus ◽

Douglas Fir ◽

Laccaria Bicolor ◽

Laccaria Laccata ◽

Naturally Occurring ◽

American Strain

In the Saint-Brisson experiment conducted in central France, the American strain of the ectomycorrhizal fungus Laccaria bicolor (Maire) P.D. Orton S238N and the French strain L. bicolor 81306 inoculated on containerized Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings increased by 60% the total volume of wood produced 8 years after outplanting as compared with uninoculated but naturally mycorrhizal trees. The two strains introduced 10 years before in the inoculated plots are still present and dominant; they did not prevent the colonization of Douglas-fir roots by naturally occurring ectomycorrhizal fungi but allowed for the establishment of a very diversified symbiotic microflora. Eight to 12 years after outplanting, all the Douglas-fir plots were colonized by Laccaria laccata (Scop.:Fr.) Cooke or L. bicolor strains, as well as some other species, independently of the nursery treatments. With one exception in one plot, the presence of indigenous genets in the control treatments may have prevented the vegetative colonization of the inside of the noninoculated plots by the two introduced strains.

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Metallothionein-like peptides involved in sequestration of Zn in the Zn-accumulating ectomycorrhizal fungus Russula atropurpurea

Metallomics ◽

10.1039/c4mt00141a ◽

2014 ◽

Vol 6 (9) ◽

pp. 1693-1701 ◽

Cited By ~ 20

Author(s):

Tereza Leonhardt ◽

Jan Sácký ◽

Pavel Šimek ◽

Jiří Šantrůček ◽

Pavel Kotrba

Keyword(s):

Ectomycorrhizal Fungi ◽

Ectomycorrhizal Fungus ◽

Substantial Portion ◽

Natural Conditions ◽

Binding Peptides ◽

Russula Atropurpurea

The first evidence of the existence of gene-encoded Zn-binding peptides that sequester a substantial portion of intracellular Zn in ectomycorrhizal fungi under natural conditions.

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1-Aminocyclopropane-l-carboxylic Acid - An Intermediate of the Ethylene Biosynthesis in Higher Plants

Zeitschrift für Pflanzenphysiologie ◽

10.1016/s0044-328x(79)80011-2 ◽

1979 ◽

Vol 92 (4) ◽

pp. 285-294 ◽

Cited By ~ 129

Author(s):

Klaus Lürssen ◽

Klaus Naumann ◽

Rolf Schröder

Keyword(s):

Carboxylic Acid ◽

Higher Plants ◽

Ethylene Biosynthesis

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Cadmium-Responsive Thiols in the Ectomycorrhizal Fungus Paxillus involutus

Applied and Environmental Microbiology ◽

10.1128/aem.70.12.7413-7417.2004 ◽

2004 ◽

Vol 70 (12) ◽

pp. 7413-7417 ◽

Cited By ~ 97

Author(s):

Mikael Courbot ◽

Laurent Diez ◽

Roberta Ruotolo ◽

Michel Chalot ◽

Pierre Leroy

Keyword(s):

Molecular Mass ◽

Ectomycorrhizal Fungi ◽

High Performance ◽

Metal Tolerance ◽

Ectomycorrhizal Fungus ◽

Paxillus Involutus ◽

Cellular Mechanisms ◽

Chromatography Method ◽

Relative Lack ◽

Liquid Chromatography Method

ABSTRACT Molecular and cellular mechanisms underlying the sustained metal tolerance of ectomycorrhizal fungi are largely unknown. Some of the main mechanisms involved in metal detoxification appear to involve the chelation of metal ions in the cytosol with thiol-containing compounds, such as glutathione, phytochelatins, or metallothioneins. We used an improved high-performance liquid chromatography method for the simultaneous measurement of thiol-containing compounds from cysteine and its derivatives (γ-glutamylcysteine, glutathione) to higher-molecular-mass compounds (phytochelatins). We found that glutathione and γ-glutamylcysteine contents increased when the ectomycorrhizal fungus Paxillus involutus was exposed to cadmium. An additional compound with a 3-kDa molecular mass, most probably related to a metallothionein, increased drastically in mycelia exposed to cadmium. The relative lack of phytochelatins and the presence of a putative metallothionein suggest that ectomycorrhizal fungi may use a different means to tolerate heavy metals, such as Cd, than do their plant hosts.

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THE ROLE OF CYTOKININS AND ETHYLENE INHIBITORS ON LENTICEL HYPERTROPHY GENERATION AND ETHYLENE PRODUCTION IN IN VITRO CULTURES OF POPULUS EUPHRATICA OLIVIER

Israel Journal of Plant Sciences ◽

10.1080/07929978.1995.10676620 ◽

1995 ◽

Vol 43 (4) ◽

pp. 339-345 ◽

Cited By ~ 2

Author(s):

M.D. Lledó ◽

M.B. Crespo ◽

J.B. Amo-Marco

Keyword(s):

Ethylene Production ◽

Populus Euphratica ◽

In Vitro Cultures ◽

Nodal Segments ◽

Ethylene Inhibitors ◽

Se Spain ◽

Ethylene Formation ◽

Free Media

Populus euphratica Olivier is native to the Irano—Turanian areas (Middle East). Elche (Alicante province, SE Spain) is known to be its only European location. Nodal segments from root shoots were established in vitro in a Murashige and Skoog medium supplemented with several cytokinins. Ethylene inhibitors AgNO3 and CoCl2 were used in combination with kinetin. Hormone-free media supplemented with sucrose (20–60 mg 1−1) was also tested. Ethylene was measured by gas chromatography, and both the percentage of sprouting shoots and lenticel hypertrophy in cultures were recorded. Ethylene production was higher in cultures supplemented with cytokinins (especially with meta-topolin), with high sprouting percentages, and lenticel hypertrophy. In cultures supplemented with 6-benzylaminopurine or 6-(γ,γ,-dimethylallylamino)-purine, ethylene production was lower and explants looked unhealthy. Ethylene formation was inhibited in cultures supplemented with AgNO3 (1 mg 1−1), which also decreased percentage of sprouting buds and lenticel hypertrophy.

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Wound-Induced Ethylene Production and 1-Aminocyclopropane-1-carboxylic Acid Synthase in Mesocarp Tissue of Winter Squash Fruit

Plant and Cell Physiology ◽

10.1093/oxfordjournals.pcp.a076626 ◽

1983 ◽

Keyword(s):

Carboxylic Acid ◽

Ethylene Production ◽

Winter Squash

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Foliar application of sodium selenate induces regulation in yield formation, grain quality characters and 2-acetyl-1-pyrroline biosynthesis in fragrant rice

BMC Plant Biology ◽

10.1186/s12870-019-2104-4 ◽

2019 ◽

Vol 19 (1) ◽

Cited By ~ 2

Author(s):

Haowen Luo ◽

Bin Du ◽

Longxin He ◽

Axiang Zheng ◽

Shenggang Pan ◽

...

Keyword(s):

Carboxylic Acid ◽

Grain Yield ◽

Grain Quality ◽

Foliar Application ◽

Higher Plants ◽

Sodium Selenate ◽

Rice Varieties ◽

Fragrant Rice ◽

The Stability ◽

Heading Stage

Abstract Background Selenium (Se) is a beneficial element for higher plants and essential for mammals. To study the effect of the foliar application of sodium selenate on fragrant rice performance, a pot experiment was conducted in Guangdong, China. At the initial heading stage, one-time foliar application of sodium selenate with concentrations of 0, 10, 20, 30, 40 and 50 μmol·L− 1 (named CK, Se1, Se2, Se3, Se4 and Se5, respectively) were foliar applied on two fragrant rice varieties, ‘Meixiangzhan-2’ and ‘Xiangyaxiangzhan’. Results Selenate application at the initial heading stage not only improved the grain yield of fragrant rice by increasing the seed-setting rate and grain weight, but also promoted the grain quality by increasing crude protein contents and lowering the chalky rice rate. Furthermore, Se applications enhanced the biosynthesis of 2-acetyl-1- pyrroline (2-AP), the main aromatic compound, by increasing the contents of precursors (△1- pyrroline, proline and pyrroline-5-carboxylic acid (P5C)) and the activities of enzymes (proline dehydrogenase (PRODH), △1-pyrroline-5-carboxylic acid synthetase (P5CS), and ornithine aminotransferase (OAT)) in fragrant rice. The results also showed that foliar application of sodium selenate enhanced the antioxidant system of both varieties by promoting the activities of peroxidase (POD), superoxide dismutase (SOD), catalase (CAT) and reducing the contents of malondialdehyde (MDA). Furthermore, the real-time PCR analyses depicted that foliar application of selenate up-regulated the GPX1, GPX4 and CATC transcripts. The higher antioxidative enzymatic activities might strength the stress resistant to ensure the stability of yield in fragrant rice form abiotic stress. Conclusions Foliar applications of sodium selenate at the initial heading stage increased the grain 2-AP content by enhancing the biosynthesis-related enzymes and precursors. The grain yield and quality of fragrant rice also increased due to selenate application. Furthermore, foliar application of selenate promoted the activities of enzymes such as POD, SOD and CAT and up-regulated the expression of gene GPX4, GPX1 and CATC.

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Harvest maturity related changes in the cold-induced activation of 1-aminocyclopropane-1-carboxylic acid metabolism in Granny Smith apples / Efecto del estado de madurez sobre la activación por frío del metabolismo del ácido 1-aminociclopropano-1-carboxílico en manzanas Granny Smith

Food Science and Technology International ◽

10.1177/108201329900500304 ◽

1999 ◽

Vol 5 (3) ◽

pp. 223-228 ◽

Cited By ~ 3

Author(s):

C. Larrigaudiere ◽

I. Recasens ◽

J. Graell ◽

M. Vendrell

Keyword(s):

Carboxylic Acid ◽

Ethylene Production ◽

Oxidase Activity ◽

Acid Metabolism ◽

Cold Treatment ◽

Acc Oxidase ◽

Malus Domestica Borkh ◽

Harvest Dates ◽

Harmonization Process ◽

Harvest Maturity

Changes in 1-aminocyclopropane-1-carboxylic acid metabolism in apples ( Malus domestica Borkh cv Granny Smith) were studied in relation to cold storage. Emphasis was given to the differential re sponsiveness of fruits to cold treatment as a function of stage of maturity at harvest. Fruits were held at 1 or 20 °C for 30 days, respectively, or exposed to 1 °C for 10 days and then storaged at 20 °C for up to 30 days. Fruits at 20 °C showed typical climacteric behavior. Differences at 1 °C between maturity stages in ethylene production and ACC oxidase activity were abolished, which showed that cold treatment is an important inducer of climacteric rise in preclimacteric Granny Smith apples. At 1 °C, ethylene production was lower than at 20 °C and the maxima in production were similar for all the stages of maturity, but took place at different times which corresponded exactly to the initial differ ences in harvest dates. After the transfer to 20 °C, fruits exhibited similar behavior as regards ethyl ene production, ACC oxidase activity, and ACC and MACC levels in relation to a harmonization process which is discussed in this study.

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