Chilling Effect on the Photosynthetic Carbon Metabolism of Maize Leaves

Muschinek, Györgyi; Faludi-Dániel, Ágnes; GöRöG, K.; Nagy, Bálint Zsolt

doi:10.1007/978-94-017-4971-8_103

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“…Stamp (1980) also reported a significant reduction of PPDK and NADP+-MDH activities for seedlings of cold-sensitive maize cultivars subjected to chilling temperatures. Muschinek et a!. (1984) have recently demonstrated through labelling experiments that, in addition to PPDK and NADP+-MDH, NADP*-ME was also more affected by cold treatments in chilling-sensitive than in chilling-tolerant maize cultivars.…”

Section: Effect Of Light-cliilling In Rivomentioning

confidence: 99%

Differential effects of chilling on the activity of C₄ enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

Simon

1987

Physiologia Plantarum

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Five‐week‐old plants of Echinochloa crusgalli (L.) Beauv. from Mississippi and from Québec grown under controlled conditions were subjected to dark chilling for 10 h at 5°C or light chilling treatments for 14 h at 7°C under hight light (1 000 μmol m−2 s−1). The activities of four C4 enzymes of Québec plants, measured 4 h after the completion of the cold treatment, were not affected by the chilling treatment in the dark. The activities of pyruvate, Pi dikinase (PPDK; EC 2.7.9.1) and NADP+‐malic enzyme (NADP+‐ME; EC 1.1.1.40), were significantly reduced in dark‐chilled Mississippi plants. Chilling under high light conditions elicited significant levels of reduction in the activities of the four enzymes from both ecotypes but the reductions were significantly less severe for Québec plants. The recovery of activities of phosphoenolpyruvate carboxylase (PEPC; EC 4.1.1.31) and PPDK for both ecotypes was completed within 36 to 60 hours following the chilling treatment, but NADP+‐malate dehydro‐genase (NADP+‐MDH; EC 1.1.1.82) and NADP+‐ME activities of chilled Mississippi plants remained below that of control plants at the end of the 5‐day monitoring period. PPDK was inactivated in vitro at 0 and 10°C and the rates of cold inactivation were significantly higher for PPDK extracted from Mississippi plants. The activity of PEPC of Mississippi extracts was slightly, but significantly reduced by a 60 min treatment at 0°C.

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Section: Effect Of Light-cliilling In Rivomentioning

confidence: 99%

Differential effects of chilling on the activity of C₄ enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

Simon

1987

Physiologia Plantarum

View full text Add to dashboard Cite

show abstract

Chilling Effect on the Photosynthetic Carbon Metabolism of Maize Leaves

Cited by 1 publication

References 6 publications

Differential effects of chilling on the activity of C₄ enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

Differential effects of chilling on the activity of C₄ enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

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Chilling Effect on the Photosynthetic Carbon Metabolism of Maize Leaves

Cited by 1 publication

References 6 publications

Differential effects of chilling on the activity of C4 enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

Differential effects of chilling on the activity of C4 enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

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Differential effects of chilling on the activity of C₄ enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates

Differential effects of chilling on the activity of C₄ enzymes in two ecotypes of Echinochloa crus‐galli from sites of contrasting climates