Evaluation of resistance to Al toxicity in wild graminae of acid meadows

بوم شناسی کشاورزی

Article 4, Volume 1, Issue 2, September 2009, Pages 47-52   

Document Type: Scientific - Research

DOI: 10.22067/jag.v1i2.2685

Authors

Vahid Poozesh^* ; Pablo Kerooz; Jeorje Yertoni

Abstract

In acid soils, aluminium toxicity is the primary factor limiting crop and forage production. At soil pH < 5.0, Al solubility increases and Al appears to be rhizotoxic. The objectives of the present study were to compare Al tolerance among wild graminae of acid meadows and to evaluate the relation between a plant functional trait and the Al resistance, in nutrient solution. In addition, a sensitive Lolium perenne variety was included as a control. There was a great difference among the graminaceous species tested, when compared by relative root elongation and critical Al activity corresponding to 50% root elongation reduction. The {Al 3+}50 activities were 3, 13 , 14 et 26 µM for Lolium perenne, Molinia coerulea, Holcus lanatus and Danthonia decumbens, respectively. No relation was found between the functional trait leaf dry matter content (LDMC) and Al resistance. Holcus lanatus, tolerant to Al toxicity, with a low LDMC, would deserve a further study of its nutritional qualities for cattle. The very tolerant D. decumbens, with a high LDMC, would present an interest for a later study of the mechanisms of tolerance to Al and possibly, for other applications like the protection of the very acid soils against erosion.

Keywords

Grass; Aluminium; Acid soils; Meadows; Leaf dry matter content (LDMC)

References

Antuna, A., Alvarez M.A., Morey M., 1980. Comportamiento de gramineas pratenses frente al pH y los carbonatos

del suelo en la Cuenca del Piguena – Narcea (Asturias). Pastos. 10 , 58-70.

ارزیابی مقاومت گندمیان وحشی به سمیت آلومینیم... 51

2- Austrheim, G., Evju, M., Mysterud A., 2005.Herb abundance and life history traits in two contrasting alpine

habitats in southern Norway. Plant Ecology. 179, 217-229.

3- Bennet, R.J., 1995. The use of hematoxylin in screening perennial ryegrass (Lolium perenne) for aluminium

tolerance. South African Journal of Plant and Soil. 12, 65-72.

4- Crawford, S.A., Wilkens, S., 1997. Ultrastructural changes in root cap cells of two Australian native grass species

following exposure to aluminium. Australian Journal of Plant Physiology. 24, 165-174.

5- Delhaize, E., Ryan, P.R., Randall, P.J., 1993. Aluminium tolerance in wheat (Triticum aestivum L.). II.

Aluminium stimulated excretion of malic acid from root apices. Plant Physiol. 103, 695-702.

6- Foy, C.D., 1992. Soil chemical factors limiting plant growth. Adv. Soil Sci. 19, 97-149.

7- Garnier, E., Shipley, B., Roumet, C., Laurent, G., 2001. A standardized protocol for the determination of specific

leaf area and leaf dry matter content. Functional Ecology. 15: 688 – 695.

8- Hocking, P.J., 2001. Organic acids exuded from roots in phosphorus uptake and aluminium tolerance of plants in

acid soils. Advances in Agronomy. 74, 63-97.

9- Houdijk A.L.F.M., Verbeek P.J.M., Van Dijk H.F.G., Roelofs J.G.M., 1993. Distribution and decline of

endangered herbaceous heathland species in relation to the chemical composition of the soil. Plant and Soil. 148,

137-143.

10- Kid, P.S., Proctor, J., 2001. Why plants grow poorly on very acid soils: are ecologists missing the obvious?

Journal of Experimental Botany. 52, 791-799.

11- Kinraide, T.B., 2003. Toxicity factors in acidic forest soils: attempts to evaluate separately the toxic effects of

excessive Al3+ and H+ and insufficient Ca2+ and Mg2+ upon root elongation. European Journal of Soil Science.

54, 323-333.

12- Kinraide, T.B., 1991. Identity of the rhizotoxic aluminium species. Plant Soil. 134, 167-178.

13- Kochian, L.V., Pineros, M.A., Hoekenga, O.A., 2005. The physiology, genetics and molecular biology of plant

aluminium resistance and toxicity. Plant and Soil. 274, 175-195.

14- Mengel, K., Kirkby, E.A., Kosegarten, H., Appel, T., 2001. Principles of plant nutrition. Kluwer, Dordrecht, pp.

849.

15- Nawrot, M., Szarejko, I., Maluszynski, M., 2001. Barley mutants with increased tolerance to aluminium toxicity.

Euphytica. 120, 345-356.

16- Parker, D.R., Zelazny, L.W., Kinraide, T.B., 1987. Improvements to the program GEOCHEM Soil. Sci. Soc. Am.

J. 51, 488-491.

17- Poozesh, V., Al Haj Khaled, R., Ansquer, P., Theau, G.P., Duru, M., Bertoni, G., Cruz P., 2005. Are leaf traits

stable enough to rank native grasses in contrasting growth conditions. xx International Grassland Congress:

Offered pp. 209.

18- Ritchie, G.S.P., 1995. Solube aluminium in acidic soils: principles and practicalities. Plant and Soil. 171, 17-27.

19- Roem, W.J., Berendse, F., 2000. Soil acidity and nutrient supply ratio as possible factors determining changes in

plant species diversity in grassland and heathland communities. Biological Conservation. 92, 151-161.

20- von Uexküll, H.R., Mutert, E., 1995. Global extent, development and economic impact of acid soils. Plant and

Soil. 171, 1-15.

21- Wenzl, P., Patino, G.M., Chaves, A.L., Mayer, J.E., Rao, I., 2001. The high level of aluminum resistance in

signalgrass is not associated with known mechanisms of external detoxification in root apices. Plant Physiol. 125,

1473-1484.

22- Wenzl, P., Mancilla, L.I., Mayer, J.E., Albert, R., Rao, I., 2003. Simulating infertile acid soils with nutrient

solutions : the effects on brachiaria species. Soil Sci. Soc. Am. J. 67, 1457-1469.

23- Wheeler, D.M., 1995. Relative aluminium tolerance of ten species of Gramineae. Journal of Plant Nutrition. 18,

2305-2312.

24- Wheeler, D.M., Edmeades, D.C, Christie, R.A, Gardner R., 1992. Effet of aluminium on the growth of 34 plant

species : a summary of results obtained in low ionic strength solution culture. Plant Soil. 146, 61-66.

25- Wright, R.J., Baligar, V.C., Wright S.F., 1987. Estimation of phytotoxic aluminium in soil solution using three

spectrophotometric methods. Soil Science. 144, 224-232.