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Response of net photosynthesis in bean ( Phaseolus vulgaris ) leaves to the elevation of the partial pressures of oxygen and carbon dioxide
Author(s) -
Maleszewski Stanislaw,
Kamińska Zofia,
Kondracka Agnieszka,
Mikulska Maria
Publication year - 1988
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1988.tb00624.x
Subject(s) - phaseolus , photosynthesis , photosynthetically active radiation , carbon dioxide , partial pressure , botany , oxygen , horticulture , light intensity , chemistry , biology , physics , organic chemistry , optics
Bean ( Phaseolus vulgaris L. cv. Golden Saxa) plants were grown under low artificial light or under natural daylight. The rate of net photosynthesis (P N ) was measured at: CO 2 partial pressure, p(CO 2 ), of 0.03, 0.09 or 0.15 kPa; O 2 partial pressure, p(O 2 ), of 2, 21 or 31 kPa and at light intensities of 350 or 1000 μmol m −2 s −1 (photosynthetically active radiation). In plants which had been grown under natural light, stimulation of P N at 21 kPa p(O 2 ) was found only at elevated p(CO 2 ) and high light. It is proposed that this phenomenon is dependent on a high capacity of the photosynthetic apparatus to regenerate ribulose 1.5‐bisphosphate.