Characterization of 1-aminocyclopropane-1-carboxylic acid oxidase from barley (Hordeum vulgare L.) seedlings and pine (Pinus sylvestris L.) needles

Kruzmane, Dace; Ievinsh, Gederts

doi:10.1016/s0168-9452(99)00003-5

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Our conclusion appears to be in conflict with the results of Kruzemane and Ievinsh (1999) who report ACC oxidase activity from Pinus syl6estris needles. The maximum ACC oxidase activity that Kruzemane and Ievinsh (1999) reported for extracts of pine needles was 1 nl (g fresh weight) − 1 h − 1 ; this rate represents a level of ethylene production below that measured as background in the present experiments, and approaches levels that are obtained non-enzymatically under similar conditions. The ACC oxidase activity measured in seedlings of specific gymnosperms enables us to identify those orders that contain ACC oxidase and those that do not.…”

Section: Discussioncontrasting

confidence: 99%

“…Thus the two higher orders of gymnosperms (Gnetales, Coniferales) do possess ACC oxidase, but unlike in angiosperms, the enzyme is not active in the leaves. Our conclusion appears to be in conflict with the results of Kruzemane and Ievinsh (1999) who report ACC oxidase activity from Pinus sylvestris needles. The maximum ACC oxidase activity that Kruzemane and Ievinsh (1999) reported for extracts of pine needles was 1 nl (g fresh weight) −1 h −1 ; this rate represents a level of ethylene production below that measured as background in the present experiments, and approaches levels that are obtained non‐enzymatically under similar conditions.…”

Section: Discussioncontrasting

confidence: 99%

“…Second, Sephadex G‐25 desalting did not increase measured ACC oxidase activity ( Dupille and Zacarias 1996). Third, fractionation using Sephadex G‐100 did not reveal detectable ACC oxidase activity in gymnosperm leaf extracts ( Kruzemane and Ievinsh 1999).…”

Section: Resultsmentioning

confidence: 99%

“…In angiosperms ethylene is produced from methionine via S‐adenosyl methionine and 1‐aminocyclopropane‐1‐carboxylic acid (ACC) which is oxidised to ethylene by ACC oxidase. This enzyme has not been characterised in any plants other than angiosperms, with the exception of Pinus sylvestris ( Kruzemane and Ievinsh 1999) where reported activities are an order of magnitude lower than those typically reported for the angiosperm enzyme ( He et al 1996; Finlayson et al 1997) and approached non‐enzymatic ethylene production rates ( McRae et al 1983). Using excised leaf discs of species representing all major groups of land plants, Osborne demonstrated that ACC‐stimulated ethylene production occurred only in seed plants ( Osborne 1989).…”

Section: Introductionmentioning

confidence: 90%

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ACC oxidase is found in seedlings of two (Coniferales, Gnetales) of the four gymnosperm orders

Reynolds

John

2000

Physiologia Plantarum

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Leaf material and seedlings of species representing all gymnosperm orders were tested for 1‐aminocyclopropane‐1‐carboxylate (ACC) oxidase activity. Seedlings of Pinus nigra, Pinus radiata, Pseudotsuga menziesii, Cupressocyparis leylandii, Ephedra major and E. nevadensis showed high level in vitro ACC oxidase activity. The enzyme from seedlings of Pinus nigra var. nigra (Arnold) was shown to resemble the angiosperm enzyme in a requirement for ascorbate, carbon dioxide and Fe(II). In contrast, seedlings of Ginkgo biloba, Dioon edule, Zamia furfuraceae and Cycas revoluta showed no detectable ACC oxidase activity. Leaf material from species representing all orders of gymnosperms was also tested for ACC oxidase activity in vitro, but none could be demonstrated. The results presented here support an origin of ACC oxidase in a common ancestor of the angiosperms, Gnetales and Coniferales.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 90%

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ACC oxidase is found in seedlings of two (Coniferales, Gnetales) of the four gymnosperm orders

Reynolds

John

2000

Physiologia Plantarum

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Regulations of the C 2 H 4 -forming system and the H 2 O 2 -scavenging system by heat treatment associated with self incompatibility in lily

Suzuki¹,

Tsuruhara²,

Tezuka³

2001

Sexual Plant Reproduction

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The mechanism of self incompatibility in pistils of Lilium longiflorum Thunb. cv. Hinomoto, which is overcome by heat treatment, was analyzed. Immersing detached pistils in a distilled water bath held at 45°C for 5 min suppressed levels of ethylene and activities of 1-aminocyclopropane-1-carboxylate (ACC) oxidase at 6 h after self-and cross-incompatible pollination. However, the levels and activities showed no significant difference 48 h after pollination. Levels of ACC and activities of ACC synthase at 6 h after self-incompatible pollination were lower in pistils with heat treatment. Moreover, the heat treatment suppressed the activity of superoxide dismutase and enhanced the activity of catalase, ascorbate peroxidase, dehydroascorbate reductase, and glutathione reductase. In addition, the amount of hydrogen peroxide (H 2 O 2 ) was reduced by heat treatment. In summary, heat treatment suppressed the ethylene-forming system and also enhanced the hydrogen peroxide-scavenging system in self-pollinated pistils associated with self incompatibility. A possible correlation between self incompatibility and stress in pistils after self-incompatible pollination is discussed based on the results obtained using heated pistils.

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Changes of 1-Aminocyclopropane-1-Carboxylic Acid Oxidase Activity in Stressed Pinus Sylvestris Needles

Ievinsh¹,

Dreibante²,

Kruzmane³

2001

Biologia plant.

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Characterization of 1-aminocyclopropane-1-carboxylic acid oxidase from barley (Hordeum vulgare L.) seedlings and pine (Pinus sylvestris L.) needles

Cited by 5 publications

References 27 publications

ACC oxidase is found in seedlings of two (Coniferales, Gnetales) of the four gymnosperm orders

ACC oxidase is found in seedlings of two (Coniferales, Gnetales) of the four gymnosperm orders

Regulations of the C 2 H 4 -forming system and the H 2 O 2 -scavenging system by heat treatment associated with self incompatibility in lily

Changes of 1-Aminocyclopropane-1-Carboxylic Acid Oxidase Activity in Stressed Pinus Sylvestris Needles

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