Short‐ and Long‐term Effects of High Temperatures (47–49 °C) on Tobacco Leaves. I. Photosynthesis

ALIZA BEN ZIONI; CHANAN ITAI

doi:10.1111/j.1399-3054.1972.tb03603.x

Short‐ and Long‐term Effects of High Temperatures (47–49 °C) on Tobacco Leaves. I. Photosynthesis

ALIZA BEN ZIONI, CHANAN ITAI

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9 Scopus citations

Abstract

Detached Nicotiana rustica leaves were exposed for 2 minutes to temperatures in the range 36° to 51°C. Above 45°C, ¹⁴CO₂ fixation was reduced by half as compared with controls. The fall in ¹⁴CO₂ fixation continued for 2 1/2 h. Recovery was completed 45 h after the treatment. Above 45°C there was an increase in the labeled cationic and anionic fractions and a decrease in the neutral fractions, both increase and decrease being associated with the impaired CO₂ fixation. However, these changes in products were also demonstrated when leaves were exposed to the high temperature after labeling.

Original language	English
Pages (from-to)	216-219
Number of pages	4
Journal	Physiologia Plantarum
Volume	27
Issue number	2
DOIs	https://doi.org/10.1111/j.1399-3054.1972.tb03603.x
State	Published - 1 Jan 1972
Externally published	Yes

ASJC Scopus subject areas

Physiology
Genetics
Plant Science
Cell Biology

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10.1111/j.1399-3054.1972.tb03603.x

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abstract = "Detached Nicotiana rustica leaves were exposed for 2 minutes to temperatures in the range 36° to 51°C. Above 45°C, 14CO2 fixation was reduced by half as compared with controls. The fall in 14CO2 fixation continued for 2 1/2 h. Recovery was completed 45 h after the treatment. Above 45°C there was an increase in the labeled cationic and anionic fractions and a decrease in the neutral fractions, both increase and decrease being associated with the impaired CO2 fixation. However, these changes in products were also demonstrated when leaves were exposed to the high temperature after labeling.",

author = "ZIONI, {ALIZA BEN} and CHANAN ITAI",

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AB - Detached Nicotiana rustica leaves were exposed for 2 minutes to temperatures in the range 36° to 51°C. Above 45°C, 14CO2 fixation was reduced by half as compared with controls. The fall in 14CO2 fixation continued for 2 1/2 h. Recovery was completed 45 h after the treatment. Above 45°C there was an increase in the labeled cationic and anionic fractions and a decrease in the neutral fractions, both increase and decrease being associated with the impaired CO2 fixation. However, these changes in products were also demonstrated when leaves were exposed to the high temperature after labeling.

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Short‐ and Long‐term Effects of High Temperatures (47–49 °C) on Tobacco Leaves. I. Photosynthesis

Abstract

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