L.H.W. van der Plas

Wageningen University & Research

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Dick Vreugdenhil

Centre for BioSystems Genomics

Marc J. M. Hagendoorn

Wageningen University & Research

Alexander R. van der Krol

Wageningen University & Research

Anneke M. Wagner

Vrije Universiteit Amsterdam

Wouter A. Kanneworff

Vrije Universiteit Amsterdam

Diaan Jamar

Wageningen University & Research

J. P. F. G. Helsper

Wageningen University & Research

Jeroen Wilmer

Biogemma (France)

J. D. Verleur

Vrije Universiteit Amsterdam

Maarten Koornneef

Max Planck Institute for Plant Breeding Research

Cooperative Institutions

Wageningen University & Research

Graduate School Experimental Plant Sciences

Vrije Universiteit Amsterdam

Centre for BioSystems Genomics

University of Amsterdam

University of Groningen

Research International (United States)

Institut des Sciences des Plantes de Montpellier

Russian Academy of Sciences

Timiryazev Institute of Plant Physiology

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Characteristics of the respiratory peak in batch cultures of Petunia hybrida

Physiologia Plantarum (1994)

Willie A. M. van Emmerik L.H.W. van der Plas Anneke M. Wagner

In batch cultures of Petunia hybrida cv. Rosy Morn Fertile. one respiratory peak is usually observed shortly after subculturing. However, two types of peak respiration could be distinguished, one connected with the dilution process and one with sugar addition at low biomass concentrations. The dilution peak was observed when cells were diluted in medium without sugar, in the presence or absence of mannitol. The sugar peak occurred only after previous dilution of the cells and not when sugar is added at high biomass concentrations Apparently the existence of a dilute suspension is a prerequisite for the induction of the peak. The presence of sugar is not a prerequisite for the increased respiratory activity but it is necessary lor growth: however, growth is possible without the increase in respiration, as was shown by the addition of sugar to a culture with a high biomass concentration. The peak caused by dilution either in the presence or absence of sugar showed no significant differences in height. The height of the peak caused by sugar addition to a previously diluted cell suspension was correlated with the sugar concentration. The respiratory peak disappeared long before the end of the growth period; this decline of the respiratory rates was not connected to sugar or oxygen limitation. In a continuous culture of Petunia hybrida growing at low biomass concentration, the respiration was always at the high level as observed during the peak of batch culture. Growing at lower biomass concentrations might be more expensive for plant cell suspensions.

Dilution

Petunia

10.1111/j.1399-3054.1994.tb08802.x

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Citations (3)

PPO Activity and Polyphenol Content are not Limiting Factors During Brown Core Development in Pears (Pyrus communis L. cv. Conference)

Journal of Plant Physiology (1999)

R.H. Veltman Christian Larrigaudière Harry J. Wichers A.C.R. van Schaik L.H.W. van der Plas

Browning

Orchard

Limiting

Pera