+ Translate

Phenotypic plasticity in a physiological perspective

, : Phenotypic plasticity in a physiological perspective. Acta Oecologica Oecologia Plantarum 9(1): 43-60

Phenotypic plasticity is a neglected area of research in plant physiology, whereas an abundance of data is available and may used for interpretation in terms of plasticiity. The plastic response has three main characteristics: the amount, the direction and the response time. The latter is very important for plant physiologists. Differences in response time, the time between the change in an environmental factor and the performance of the plastic response, may reveal information about the physiological mechanisms of plasticity. The rapidity of a response points to its importance and plant's strategy. Another discrimination among plastic responses is the subdivision in direct and indirect responses. A direct response is the reaction of a plant trait to the environmental stimulus itself, whereas in an indirect response one or more translation- and transport steps are mediating the environmental stimulus to the responsive plant trait. In this paper we ill present a survey of phenotypic plasticity to three important environmental factors: light, temperature and nutrition. Emphasis will be put on nutrition; we will propose a model for growth regulation, including the shoot to root ratio, by cytokinin production in the root tips. Cytokinin productions is sensitive to the mineral supply and cytokinins will influence the growth rate of shoot and root and thus shoot to root ratio. A direct growth response, on the contrary, is not mediated by cytokinins and is not accompanied by a shift of the shoot to root ratio.

(PDF 0-2 workdays service)

Accession: 001653823

Submit PDF Full Text: Here

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Related references

Chown, S.L.; Sørensen, J.G.; Sinclair, B.J., 2008: Physiological variation and phenotypic plasticity: a response to 'Plasticity in arthropod cryotypes' by Hawes and Bale. In a recent publication, Hawes and Bale provide an extended discussion of phenotypic plasticity in the context of low temperature responses of animals. They argue that phenotypic plasticity may be partitioned phylogenetically at several levels and...

Woods, H.Arthur., 2014: Mosaic physiology from developmental noise: within-organism physiological diversity as an alternative to phenotypic plasticity and phenotypic flexibility. A key problem in organismal biology is to explain the origins of functional diversity. In the context of organismal biology, functional diversity describes the set of phenotypes, across scales of biological organization and through time, that a si...

Pannell, J.R., 2005: Phenotypic plasticity and a functional vs genetic perspective of plant gender. This paper discusses sex determination based on a phenotypic perspective (i.e. a plant's gender depends both on its own sex allocation or investment in male vs. female functions, and on the sex allocation of other individuals in the populatio...

Emery,; Chinnappa, C.; Reid, D.M., 1993: Environmental and physiological regulation of phenotypic plasticity in Stellaria longipes. American Journal of Botany 80(6 SUPPL ): 66-67

Kembel, S.W.; Cahill, J.F., 2005: Plant phenotypic plasticity belowground: a phylogenetic perspective on root foraging trade-offs. Many plants proliferate roots in nutrient patches, presumably increasing nutrient uptake and plant fitness. Nutrient heterogeneity has been hypothesized to maintain community diversity because of a trade-off between the spatial extent over which p...

Wada, H.; Sewall, K.B., 2015: Introduction to the symposium-uniting evolutionary and physiological approaches to understanding phenotypic plasticity. Diverse subfields of biology have addressed phenotypic plasticity, but have emphasized different aspects of the definition, thereby shaping the questions that are asked and the methodological approaches that are employed. A key difference between...

Zizumbo Villarreal, D.; Colunga GarciaMarin, P., 2001: Morpho-physiological variation and phenotypic plasticity in Mexican populations of coconut (Cocos nucifera L.). We studied the pattern of variation of 19 morphological and physiological characteristics of leaves and their phenotypic plasticity in 18 Mexican coconut populations experimentally grown under similar conditions and in the presence of LY. The resu...

Emery,; Kathiresan, K.A.umugam; Reid, D.M.; Chinnappa, C.C., 1994: Ethylene metabolism and the physiological basis for differences in phenotypic plasticity between two ecotypes of Stellaria longipes. American Journal of Botany 81(6 SUPPL ): 70

Lema, S.C., 2015: Hormones and phenotypic plasticity in an ecological context: linking physiological mechanisms to evolutionary processes. Hormones are chemical signaling molecules that regulate patterns of cellular physiology and gene expression underlying phenotypic traits. Hormone-signaling pathways respond to an organism's external environment to mediate developmental stage-...

Wetson, A.M.; Zörb, C.; John, E.A.; Flowers, T.J., 2014: High phenotypic plasticity of Suaeda maritima observed under hypoxic conditions in relation to its physiological basis. Phenotypic plasticity, the potential of specific traits of a genotype to respond to different environmental conditions, is an important adaptive mechanism for minimizing potentially adverse effects of environmental fluctuations in space and time....