biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 44:427-430, 2001 | DOI: 10.1023/A:1012471516488

Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase Content and Activity in Wheat, Rye and Triticale

B. Singh1, B.K. Singh1
1 Nuclear Research Laboratory, Indian Agricultural Research Institute, New Delhi-, India

Photosynthetic parameters were measured in triticale and its parents wheat and rye. Soluble protein content in leaves, ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) content per fresh mass, total chlorophyll content, biomass yield, leaf area, leaf mass and specific leaf mass were higher but Rubisco content expressed as percentage of soluble protein, carboxylase activity, photosynthetic rate and stomatal conductance were significantly lower in rye than in wheat. Native-PAGE of Rubisco revealed that rye carboxylase was different from that of wheat. The difference was not related to either the small or large subunit of Rubisco but, may be, to the ionic and/or other properties of the Rubisco protein moiety. Triticale Rubisco was similar to wheat. For most of the studied physiological parameters, triticale showed much more similarity with wheat than with rye.

Keywords: chlorophyll content; net photosynthetic rate; Secale cereale; stomatal conductance; Triticum aestivum; Triticale octoploide
Subjects: chlorophylls, triticale and its parents; gas exchange, triticale and its parents; ribulose-1,5-bisphosphate carboxylase/oxygenase activity and content, triticale and its parents; rye; Secale cereale; stomatal conductance, triticale and its parents; Triticale octoploide; triticale, Triticosecale; Triticum aestivum; wheat

Published: September 1, 2001  Show citation

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Singh, B., & Singh, B.K. (2001). Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase Content and Activity in Wheat, Rye and Triticale. Biologia plantarum, 44(3), 427-430. doi: 10.1023/A:1012471516488
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