Article (Scientific journals)
Differential growth dependency of normal and habituated sugarbeet cell lines upon endogenous ethylene production and exogenous ethylene application
Bisbis, Badia; Kevers, Claire; Creche, Joel et al.
1998In Physiologia Plantarum, 103 (2), p. 201-208
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Keywords :
callus; ethylene; growth; habituation; inhibitors of ethylene biosynthesis and action; sugarbeet; Beta vulgaris
Abstract :
[en] A fully habituated (auxin- and cytokinin-independent) nonorganogenic (HNO) sugarbeet (Beta vulgaris) callus produces very little ethylene as compared with a normal (N) hormone-requiring callus of the same strain. Both callus types react by growth changes to application of inhibitors of ethylene biosynthesis and ethylene action, of 1-aminocyclopropane-1-carboxylic acid (ACC) as the immediate precursor of ethylene, to transfer from light to darkness, and also to application of exogenous ethylene or an ethylene trapper. This indicates their growth dependency upon their endogenously biosynthesized ethylene and also their sensitivity to exogenous gas. However, the sensitivity was generally higher for the HNO callus producing naturally less ethylene. The weaker reaction of the HNO callus to the exogenous ethylene was attributed to its hyperhydric status (a water layer surrounding the cells). Because low ethylene production appears as a general characteristic of habituated cell lines, the causal and/or consequential relationships of this low ethylene production with other characteristics of habituated tissues (absence of exogenous hormones in the culture media, deficiency of cell differentiation, accumulation of polyamines in neoplastic tissues) are discussed.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Bisbis, Badia;  Université de Liège - ULiège > Hormonologie végétale
Kevers, Claire ;  Université de Liège - ULiège > Département des sciences de la vie > Biologie moléculaire et biotechnologie végétales
Creche, Joel;  Université de Tours > Faculté de Pharmacie > Biologie Moléculaire et Biochimie Végétale
Rideau, Marc;  Université de Tours > Faculté de Pharmacie > Biologie Moléculaire et Biochimie Végétale
Gaspar, Thomas ;  Botanique, radiobotanique & serres expér.
Language :
English
Title :
Differential growth dependency of normal and habituated sugarbeet cell lines upon endogenous ethylene production and exogenous ethylene application
Publication date :
1998
Journal title :
Physiologia Plantarum
ISSN :
0031-9317
eISSN :
1399-3054
Publisher :
Blackwell Publishing, Copenhagen, Denmark
Volume :
103
Issue :
2
Pages :
201-208
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 January 2009

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