Effects of simulated acid rain on the photosynthetic characteristics of Phaseolus vulgaris L.

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Abstract

A single treatment with a low pH solution of bean plants led to serious changes in the net photosynthetic rate (P(N)) as well as in various parameters of photosystem 2 (PS2) activity. A considerable suppression of P(N) was established already in the first hours (3 and 5) following the acid treatment (pH 2.4-1.8). The period of strong inhibition of CO2 uptake and photochemical activity was followed by the period of recovery (24-72 h). At a single spraying, pH values exceeding 2.0 did not lead to irreversible damages of the photosynthetic apparatus. The damages resulting from treatments with pH 2.0 and 1.8 were on the threshold of irreversible ones and were the cause of faster ageing.

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Velikova, V., Yordanov, I., Kurteva, M., & Tsonev, T. (1998). Effects of simulated acid rain on the photosynthetic characteristics of Phaseolus vulgaris L. Photosynthetica, 34(4), 523–535. https://doi.org/10.1023/A:1006857311410

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