Dark Fixation of CO2 by Embryo-suspensors of Nasturtium (Tropaeolum majus)

https://doi.org/10.1016/S0015-3796(80)80043-6Get rights and content

Summary

The pattern of dark carbon dioxide fixation in embryos, suspensors and haustoria of Tropaeolum majus in different stages of development (globular, heart and cotyledonary) is studied. A comparison is also made between PEP-carboxylase activity and 14CO2 incorporation in embryo, suspensor and haustoria. Phosphoenol-pyruvate carboxylase activity is correlated with the faculty of the young embryos (globular and heart-shaped) and its suspensor cells to fix CO2 by non-photosynthetic mechanisms. The present data provide biochemical evidence in characterizing physiological function of the suspensor in early embryogenesis (synthesis and transfer). Haustoria possibly acted as “transfer cells”.

References (12)

There are more references available in the full text version of this article.

Cited by (0)

*

Authors' address: Prem Lata Bhalla, Dr. M.B. Singh and Prof. C.P. Malik, Department of Botany, Punjab Agricultural University, Ludhiana, India.

View full text