Abstract
Short-term studies for comparing some primary metabolic and growth-responses to salt stress in seedlings of two maize genotypes differing in drought resistance were carried out under controlled conditions. Both genotypes revealed high yielding ability in favourable environments. Treatments: Control (Hoagland-Arnon No 1 solution) and salt stress (Hoagland-Arnon solution plus NaCl, ψ s = - 0.84 MPa). It was found that in both genotypes the activity of the principal metabolic pathway supplying reduced nitrogen (15N) for the synthesis of amino acids and proteins as well as the assimulatory number (14CO2 — assimilation relation rate per chlorophyll unit) were decreased under the effect of the stress. These effects were more marked in the resistant genotype. In this genotype the stress induced metabolic activity decline was accompanied by a corresonding reduction of the relative growth rate. Conversely, continuing growth, resulting probably from accumulation of solutes, was observed in the susceptible genotype.
On the basis of these and other observations it is assumed that the resistant genotype manifests short-term energy saving stress reactions.
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References
Aspinall D 1986 Metabolic effects of water and salinity stress in relation to expansion of the leaf surface. Aust. J. Plant Physiol. 13, 59–73.
Barlow E W R 1986 Water relations of expanding leaves. Aust. J. Plant Physiol. 13, 45–58.
Cosgrove D J 1983 Photocontrol of extension growth: A biophysical approach. Phil. Trans. R. Soc. Lond. B 303, 453–465.
Downton W J S 1984 Salt tolerance of food crops: Prospectives for improvements. CRC Crit. Rev. Plant Sci. 1, 183–201.
Drew M C and Läuchli A 1985 Oxygen-dependent exclusion of sodium ions from shoots by roots of Zea mays (cv. Pionner 3906) in relation to salinity damage. Plant Physiol. 79, 171–176.
Gershenzon J 1984 Changes in the levels of plant secondary metabolites under water and nutrient stress. In Phytochemical Adaptation to Stress. Eds. B N Timmerman et al. pp 273–320. Plenum Press, New York.
Goltsev V N, Kantcheva N R and Todorov S I 1984 670-electrical charge on the chloroplast membrane surface. Biochem. Bioenerg. 13, 117–125.
Goltsev V N and Mladenova Y I 1987 Influence of water and salt stress on delayed fluorescence induction kinetics in leaves of two Zea mays L. hybrids. Arch. Intern. Physiol. Biochim. 95, 1, 11.
Gorham J, Wyn Jones R G and McDonnell E 1985 Some mechanisms of salt tolerance in crop plants. Plant and Soil 89, 15–40.
Hanson A D and Hitz W D 1982 Metabolic responses of mesophytes to plant water deficits. Annu. Rev. Plant Physiol. 33, 163–203.
Hauck R D and Bremner J M 1976 Use of tracers for soil and fertiliser nitrogen research. Adv. Agron. 28, 219–266.
Heyser J W and Nabors M W 1981 Growth, water content and solute accumulation of two tobacco cell lines cultured on sodium chloride, dextran and polyethylene glycol. Plant Physiol. 68, 1454–1459.
Läuchli A 1984 see ref. Schubert S and Läuchli A 1986.
Maas E V, Hoffman G J, Chaba G D, Poss J A and Shannon M C 1983 see ref. Schubert S and Läuchli A 1986.
Mladenova Y I, Rotcheva S, Goltsev V and Yordanov I 1987 Primary metabolic responses to water and salt stresses of Zea mays L. seedlings of different genotypes. Proceed. Intern. Symp. Experim. Mutagen. Plants, Plovdiv, Bulgaria, October, pp 347–352.
Mladenova Y I, Vunkova-Radeva R and Pavlova A 1982 Determination of nitrate reductase activity in maize leaves of different genotypes. In Nitrate Assimilation: Molecular and Genetic Aspects. Intern. Symp. Gatersleben, GDR 20,3.
Munns R and Termaat A 1986 Whole-plant responses to salinity. Aust. J. Plant Physiol. 13, 143–160.
Schubert S and Läuchli A 1986 Na+ Exclusion, H+ release, and growth of two different maize cultivars under NaCl salinity. J. Plant Physiol. 126, 145–154.
Stoilov M, Mladenova Y I and Vinarova K 1985 Physiological, biochemical and ultrastructural characterization of induced chlorophyll mutants of maize (Zea mays L.). Gen. Breed. (Bulg) 18, 189–200.
Tal M 1985 Genetics of salt tolerance in higher plants: Theoretical and practical considerations. Plant and Soil 89, 199–226.
Turner N C 1986 Crop water deficits: A decade of progress. Adv. Agron. 39, 1–51.
Venediktov P S, Krendeleva T E and Rubin A B 1982 Primary photosynthetic processes and physiological state of the plant organism. In Physiology of Photosynthesis, pp 55–76. Izd. ‘Nauka’ Moscow.
Voronova L P, Reimers F E and Khavkin E E 1976 Degradation of nitrate reductase (1.6.6.1.) of maize inbreds and hybrids. DAN USSR 229, 6, 1462–1465.
Wyn Jones R G 1984 Phytochemical aspects of osmotic adaptation. In Phytochemical Adaptations to Stress. Eds. B Timmerman et al. pp 55–78. Plenum Press, New York.
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Mladenova, Y.I. (1990). Influence of salt stress on primary metabolism of Zea mays L. seedlings of model genotypes. In: El Bassam, N., Dambroth, M., Loughman, B.C. (eds) Genetic Aspects of Plant Mineral Nutrition. Developments in Plant and Soil Sciences, vol 42. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2053-8_32
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DOI: https://doi.org/10.1007/978-94-009-2053-8_32
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