Indirect Effects of Phenolics on Plant Performance by Altering Nitrogen Cycling: Another Mechanism of Plant–Plant Negative Interactions

  • Eva Castells


Negative interactions among plants have been explained by two main mechanisms, competition and allelopathy. Here, I focus on a third mechanism resulting from the interaction of the previous two, and based upon changes in nutrient availability caused by the release of phenolic compounds into the soil. Phenolic compounds globally decrease soil N availability by changing microbial activity. The relevance of these processes in natural conditions, and the consequences that changes in N availability might have on the distribution of plant species in the ecosystem, remains to be evaluated. Here I describe the specific mechanisms by which phenolics change soil N cycling and the factors that might alter the fate and role of phenolics in the ecosystem. I review five examples in which species with high concentrations of phenolic compounds known to interfere with growth of other plants (Cistus albidus, Ledum palustre, Empetrum hermaphroditum, Populus balsamifera and Kalmia angustifolia) decrease N availability in natural conditions. In those studies, phenolics do not affect N cycling in natural systems by forming complexes with proteins, as traditionally stated, but by increasing microbial activity after being degraded by microorganisms. The presence of phenolics in plants could be a result of a selective pressure in situations where changing soil chemical properties increase plant competitive ability.


Phenolic Compound Phenolic Acid Condensed Tannin Plant Performance Calcareous Soil 
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  1. Aguilera, L.E., Gutiérrez, J.R. and Meserve, P.L. (1999) Variation in soil micro-organisms and nutrients underneath and outside the canopy of Adesmia bedwellii (Papilionaceae) shrubs in arid coastal Chile following drought and above average of rainfall. J. Arid Environ. 42, 61–70.CrossRefGoogle Scholar
  2. Appel, H.M. (1993) Phenolics in ecological interactions: the importance of oxidation. J. Chem. Ecol. 19, 1521–1552.CrossRefGoogle Scholar
  3. Baldwin, I.T., Olson, R.K. and Reiners, W.A. (1983) Protein binding phenolics and the inhibition of nitrification in subalpine balsam fir soils. Soil Biol. Biochem. 15, 419–423.CrossRefGoogle Scholar
  4. Ballester, A., Vieitez, A.M. and Vieitez, E. (1982) Allelopathic potential of Erica vagans, Calluna vulgaris and Daboecia cantabrica. J. Chem. Ecol. 8, 851–857.CrossRefGoogle Scholar
  5. Bending, G.D. and Read, D.J. (1995) The structure and function of the vegetative mycelium of ectomycorrhizal plants. New Phytol. 130, 401–409.CrossRefGoogle Scholar
  6. Bending, G.D. and Read, D.J. (1996) Effects of the soluble polyphenol tannic acid on the activities of ectomycorrhizal fungi. Soil Biol. Biochem. 28, 1595–1602.CrossRefGoogle Scholar
  7. Bloom, R.G. and Mallik, A.U. (2004) Indirect effects of blach spruce (Picea mariana) cover community structure and function in sheep laurel (Kalmia angustifolia) dominated heath of eastern Canada. Plant Soil. 265, 279–293.CrossRefGoogle Scholar
  8. Blum, U. (1998) Effects of microbial utilization of phenolic acids and their phenolic acid breakdown products on allelopathic interactions. J. Chem. Ecol. 24, 685–708.CrossRefGoogle Scholar
  9. Blum, U. and Shafer, S.R. (1988) Microbial populations and phenolic acids in soil. Soil Biol. Biochem. 20, 793–800.CrossRefGoogle Scholar
  10. Boufalis, A. and Pellissier, F. (1994) Allelopathic effects of phenolic mixtures on respiration of two spruce mycorrhizal fungi. J. Chem. Ecol. 20, 2283–2289.CrossRefGoogle Scholar
  11. Bradley, R.L., Fyles, J.W. and Titus, B. (1997) Interactions between Kalmia humus quality and chronic low C inputs in controlling microbial and soil nutrient dynamics. Soil Biol. Biochem. 29, 1275–1283.CrossRefGoogle Scholar
  12. Bradley, R.L., Titus, B.D. and Preston, C.P. (2000) Changes to mineral N cycling and microbial communities in black spruce humus after additions of (NH4)2SO4 and condensed tannins extracted from Kalmia angustifolia and balsam fir. Soil Biol. Biochem. 32, 1227–1240.CrossRefGoogle Scholar
  13. Callaway, R.M. and Aschehoug, E.T. (2000) Invasive plants versus their new and old neighbors: a mechanism of toxic invasion. Science 290, 521–523.PubMedCrossRefGoogle Scholar
  14. Castells, E. and Peñuelas, J. (2003) Is there a feedback between soil N availability in siliceous and calcareous soils and Cistus albidus leaf chemical composition? Oecologia 136, 183–192.Google Scholar
  15. Castells, E., Peñuelas, J. and Valentine, D.W. (2003) Interaction between the phenolic compound bearing species Ledum palustre and soil N cycling in a hardwood forest. Plant Soil. 251, 155–166.CrossRefGoogle Scholar
  16. Castells, E., Peñuelas, J. and Valentine, D.W. (2004) Are phenolic compounds released from the Mediterranean shrub Cistus albidus responsible for changes in N cycling in siliceous and calcareous soils? New Phytol. 162, 187–195.CrossRefGoogle Scholar
  17. Castells, E., Peñuelas, J. and Valentine, D.W. (2005) Effects of plant leachates from four Boreal understory species on soil N cycling mineralization, and white spruce (Picea glauca) germination and seedlig growth. Ann. Bot. 95, 1247–1252.PubMedCrossRefGoogle Scholar
  18. Chaves, N. and Escudero, J.C. (1997) Allelopathic effect of Cistus ladanifer on seed germination. Funct. Ecol. 11, 432–440.CrossRefGoogle Scholar
  19. Chaves, N., Sosa, T. and Escudero, J.C. (2001) Plant growth inhibiting flavonoids in exudate of Cistus ladanifer and in associated soils. J. Chem. Ecol. 27, 623–631.PubMedCrossRefGoogle Scholar
  20. Claus, H. and Filip, Z. (1990) Effects of clays and other solids on the activity of phenoloxidases produced by some fungi and actinomycetes. Soil Biol. Biochem. 22, 483–488.CrossRefGoogle Scholar
  21. Clein, J.S. and Schimel, J.P. (1995) Nitrogen turnover and availability during succession from Alder to Poplar in Alaskan taiga. Soil Biol. Biochem. 27, 743–752.CrossRefGoogle Scholar
  22. Cole, E., Youngblood, A. and Newton, M. (2003) Effects of competing vegetation on juvenile white spruce (Picea glauca (Moench) Voss) growth in Alaska. Ann. For. Sci. 60, 573–583.CrossRefGoogle Scholar
  23. Coté, J.F. and Thibault, J.R. (1988) Allelopathic potential of raspberry foliar leachates on growth of ectomycorrhizal fungi associated with black spruce. Am. J. Bot. 75, 966–970.CrossRefGoogle Scholar
  24. DeLuca, T.H., Nilsson, M.C. and Zackrisson, O. (2002) Nitrogen mineralization and phenol accumulation along a fire chronosequence in northern Sweden. Oecologia 133, 206–214.CrossRefGoogle Scholar
  25. De Luis, M., Raventos, J. and Gonzalez-Hidalgo, J.C. (2006) Post-fire vegetation succession in Mediterranean gorse shrublands. Acta Oecol. 30, 54–61.Google Scholar
  26. Einhellig, F.A. (1995) Allelopathy: current status and future goals. In: Inderjit, K.M.M. Dakshini and F.A. Einhellig (Eds.), Allelopathy: Organisms, Processes and Applications. American Chemical Society, Washington, DC, pp. 1–24.Google Scholar
  27. Facelli, J.M. and Pickett, S.T.A. (1991) Plant litter: its dynamics and effects on plant community structure. Bot. Rev. 57, 1–32.CrossRefGoogle Scholar
  28. Fierer, N., Schimel, J.P., Cates, R.G., Zou, J. (2001) Influence of balsam poplar tannin fractions on carbon and nitrogen dynamics in Alaskan taiga floodplain soils. Soil Biol. Biochem. 33:1827–1839.CrossRefGoogle Scholar
  29. Fox, R.H., Myers, R.J.K. and Vallis, I. (1990) The nitrogen mineralization rate of legume residues in soil as influenced by their polyphenol, lignin, and nitrogen contents. Plant Soil 129, 251–259.Google Scholar
  30. Gallardo, A. and Merino, J. (1992) Nitrogen immobilization in leaf litter at two Mediterranean ecosystems of SW Spain. Biogeochemistry 15, 213–228.CrossRefGoogle Scholar
  31. Gallet, C. (1994) Allelopathic potential in bilberry-spruce forests: influence of phenolic compounds on spruce seedlings. J. Chem. Ecol. 20, 1009–1024.CrossRefGoogle Scholar
  32. Gallet, C. and Pellissier, F. (1997) Phenolic compounds in natural solutions of a coniferous forest. J. Chem. Ecol. 23, 2401–2412.CrossRefGoogle Scholar
  33. Grace, J.B. and Tilman, D. (1990) Pespectives in Plant Competition. John Wiley, New York.Google Scholar
  34. Hagerman, A.E. and Butler, L.G. (1991) Tannins and lignins. In: G.A. Rosenthal and M.R. Berenbau (Eds.), Herbivores: Their Interactions with Secondary Plant Metabolites. Academic Press, Inc., New York, pp. 389–429.Google Scholar
  35. Harborne, J.B. (1997) Role of phenolic secondary metabolites in plants and their degradation in nature. In: G. Cadisch and K.E. Giller (Eds.), Plant Litter Quality and Decomposition. Cab International, Wallingford, UK, pp. 67–74.Google Scholar
  36. Harrison, A.F. (1971) The inhibitory effect of oak litter tannins on the growth of fungi, in relation to litter decomposition. Soil Biol. Biochem. 3, 167–172.CrossRefGoogle Scholar
  37. Hart, S.C., Stark, J.M., Davidson, E.A. and Firestone, M.K. (1994) Nitrogen mineralization, immobilization and nitrification. In: J.M. Bigham (Ed.), Methods of Soil Analysis, Vol. 2. Soil Science Society of America, Madison, WI, pp. 985–1018.Google Scholar
  38. Hartley, R.D. and Whitehead, D.C. (1985) Phenolic acids in soils and their influence on plant growth and soil microbial processes. In: D. Vaughan and R.E. Malcolm (Eds.) Soil Organic Matter and Biological Activity. Martinus Nijhoff and Dr. W. Junk, Dordrecht, pp. 10—149.Google Scholar
  39. Hobbie, S.E. (1992) Effects of plant species on nutrient cycling. Trends Ecol. Evol. 336–339.Google Scholar
  40. Hook, P.B., Burke, I.C. and Lauenroth, W.K. (1991) Heterogenity of soil and plant N and C associated with individual plants and openings in North American shortgrass steppe. Plant Soil 138, 247–256.Google Scholar
  41. Horner, J.D., Gosz, J.R. and Cates, R.G. (1988) The role of carbon-based plant secondary metabolites in decomposition in terrestrial ecosystems. Am. Nat. 132, 869–883.Google Scholar
  42. Inderjit (1996) Plant phenolics and allelopathy. Bot. Rev. 62, 186–202.Google Scholar
  43. Inderjit and Callaway, R.M. (2003) Experimental designs for the study of allelopathy. Plant Soil 256, 1–11.Google Scholar
  44. Inderjit and Del Moral, R. (1997) Is separating resource competition from allelopathy realistic? Bot. Rev. 63, 221–230.Google Scholar
  45. Inderjit and Mallik, A.U. (1996a) The nature of interference potential of Kalmia angustifolia. Can. J. For. Res. 26, 1899–1904.Google Scholar
  46. Inderjit and Mallik, A.U. (1996b) Growth and physiological responses of black spruce (Picea mariana) to sites dominated by Ledum groenlandicum. J. Chem. Ecol. 22, 575–585Google Scholar
  47. Inderjit and Mallik, A.U. (1997) Effects of Ledum groenlandicum amendments on soil characteristics and black spruce seedling growth. Plant Ecol. 133, 29–36.Google Scholar
  48. Inderjit and Mallik, A.U. (1999) Nutrient status of black spruce (Picea mariana [mill.] BSP) forest soils dominated by Kalmia angustifolia L. Acta Oecol. 20, 87–92.Google Scholar
  49. Inderjit and Mallik, A.U. (2002) Can Kalmia angustifolia interference to black spruce (Picea mariana) be explained by allelopathy? For. Ecol. Manage. 160, 75–84.Google Scholar
  50. Inderjit and Weiner, J. (2001) Plant allelochemical interference or soil chemical ecology? Perspect. Plant Ecol. Evol. Syst. 4, 3–12.Google Scholar
  51. Juhren, M.C. (1966) Ecological observations on Cistus in the Mediterranean vegetation. For. Sci. 12, 415–426.Google Scholar
  52. Kraus, T.E.C., Dahlgren, R.A. and Zasoski, R.J. (2003) Tannins in nutrient dynamics of forest ecosystems. Plant Soil 256, 41–66.Google Scholar
  53. Kuiters, A.T. (1990) Role of phenolic substances from decomposing forest litter in plant–soil interactions. Acta Bot.Neerl. 39, 329–348.Google Scholar
  54. Kuiters, A.T. and Sarink, H.M. (1986) Leaching of phenolic compounds from leaf and needle litter of several deciduous and coniferous trees. Soil Biol. Biochem. 18, 475–480.Google Scholar
  55. Leake, J.R. and Read, D.J. (1990) Proteinase activity in mycorrhizal fungi. I. The effect of extracellular pH on the production and activity of proteinase by ericoid endophytes from soils of contrasted pH. New Phytol. 115, 243–250.Google Scholar
  56. MacKenzie, M.D., DeLuca, T.H. and Sala, A. (2004) Forest structure and organic horizon analysis along a fire chronosequence in the low elevation forests of Western Montana. For. Ecol. Manage. 203, 331–343.Google Scholar
  57. Magill, A.H. and Aber, J.D. (2000) Variation in soil net mineralization rates with dissolved organic carbon additions. Soil Biol. Biochem. 32, 597–601.Google Scholar
  58. Mallik, A.U. (1995) Conversion of temperate forests into heaths: role of ecosystem disturbance and Ericaceous plants. Environ. Manage. 19, 675–684.Google Scholar
  59. Mallik, A.U. (2003) Conifer regeneration problems in Boreal and Temperate forests with Ericaceous understory: role of disturbance, seedbed limitation, and keystone species change. Crit. Rev. Plant Sci. 22, 341–366.Google Scholar
  60. Mallik, A.U. (2005) Allelopathy: advances, challenges and opportunities. In: J.D.I. Harper, M. An, H. Wu and J.H. Kent (Eds.), Proceedings of the 4th World Congress on Allelopathy. Charles Sturt University, Wagga Wagga, NSW, Australia. International Allelopathy Society.Google Scholar
  61. Martin, J.P. and Haider, K. (1980) Microbial degradation and stabilization of 14C-labeled lignins, phenols and phenolic polymers in relation to soil humus formation. In: T.K. Kirk, T. Higuchi and H. Chang (Eds.), Lignin Biodegradation: Microbiology, Chemistry and Potential Applications. CRC Press, Boca Raton, FL, pp. 77–100.Google Scholar
  62. McCarty, G.W., Bremner, J.M. and Schmidt, E.L. (1991) Effects of phenolic acids on ammonia oxidation by terrestrial autotrophic nitrifying bacteria. FEMS Microbiol. Ecol. 85, 345–450.CrossRefGoogle Scholar
  63. Michelsen, A., Schmidt, I.K., Jonasson, S., Dighton, J., Jones, H.E. and Callaghan, T.V. (1995) Inhibition of growth, and effects on nutrient uptake of arctic graminoids by leaf extracts- allelopathy or resource competition between plants and microbes? Oecologia 103, 407–418.CrossRefGoogle Scholar
  64. Muller, R.N., Kalisz, P.J. and Kimmerer, T.W. (1987) Intraspecific variation in production of astringent phenolics over a vegetation-resource availability gradient. Oecologia 72, 211–215.CrossRefGoogle Scholar
  65. Nicolai, V. (1988) Phenolic and mineral content of leaves influences decomposition in European forest ecosystems. Oecologia 75, 575–579.CrossRefGoogle Scholar
  66. Nilsson, M.C. (1994) Separation of allelopathy and resources competition by the boreal dwarf shurb Empetrum hermaproditum Hagerup. Oecologia 98, 1–7.CrossRefGoogle Scholar
  67. Nilsson, M.C. and Zackrisson, O. (1992) Inhibition of scots pine seedling establishment by Empetrum hermaproditum. J. Chem. Ecol. 18, 1857–1870.CrossRefGoogle Scholar
  68. Nommik, H. and Vahtras, K. (1982) Retention and fixation of ammonium and ammonia in soils. In: F.J. Stevenson (Ed.), Nitrogen in Agricultural Soils. ASA-CSSA, Madison, WI, pp. 123–171.Google Scholar
  69. Northup, R.R., Dahlgren, R.A. and Yu, Z. (1995) Intraspecific variation of conifer phenolic concentration on a marine terrace soil acidity gradient; a new interpretation. Plant Soil 171, 255–262.CrossRefGoogle Scholar
  70. Northup, R.R., Dahlgren, R.A. and McColl, J.G. (1998) Polyphenols as regulators of plant–litter–soil interactions in northern California’s pygmy forest: a positive feedback? Biogeochemistry 42, 189–220.Google Scholar
  71. Oades, J.M. (1988) The retention of organic matter in soils. Biogeochemistry 5, 35–70.CrossRefGoogle Scholar
  72. Palm, C.A. and Sanchez, P.A. (1990) Decomposition and nutrient release patterns of the leaves of three tropical legumes. Biotropica 22, 330–338.CrossRefGoogle Scholar
  73. Palm, C.A., Sanchez, P.A. (1991) Nitrogen release from the leaves of some tropical legumes as affected by their lignin and polyphenolics contents. Soil Biol. Biochem. 23:83–88.CrossRefGoogle Scholar
  74. Pellissier, F. (1993) Allelopathic inhibition of spruce germination. Acta Oecol. 14, 211–218.Google Scholar
  75. Pellissier, F. (1998) The role of soil community in plant population dynamics: is allelopathy a key component? Trends Ecol. Evol. 13, 407.CrossRefGoogle Scholar
  76. Pind, A., Freeman, C. and Lock, M.A. (1994) Enzymic degradation of phenolic materials in peatlands- measurement of phenol oxidase activity. Plant Soil 159, 227–231.CrossRefGoogle Scholar
  77. Ponge, J.F., André, J., Zackrisson, O., Bernier, N., Nilsson, M.C. and Gallet, C. (1998) The forest regeneration puzzle. Biological mechanisms in humus layer and forest vegetation dynamics. Bioscience 48, 523–530.CrossRefGoogle Scholar
  78. Read, D.J. (1991) Mycorrhizas in ecosystems. Experientia 47, 376–391.CrossRefGoogle Scholar
  79. Rice, E.L. (1974) Allelopathy. Academic Press, New York.Google Scholar
  80. Rice, E.L. (1984) Allelopathy. Academic Press, Orlando, FL.Google Scholar
  81. Rice, E.L. and Pancholy, S.K. (1973). Inhibition of nitrification by climax vegetation ecosystems. II. Additional evidence and possible role of tannins. Am. J. Bot. 60, 691–702.CrossRefGoogle Scholar
  82. Ridenour, W.M. and Callaway, R.M. (2001) The relative importance of allelopathy in interference: the effects of an invasive weed on a native bunchgrass. Oecologia 126, 444–450.CrossRefGoogle Scholar
  83. Riha, S.J., Campbell, G.S. and Wolfe, J. (1986) A model of competition for ammonium among heterotrophs, nitrifiers and roots. Soil Sci. Soc. Am. J. 50, 1463–1466.Google Scholar
  84. Robles, C., Bonin, G. and Garzino, S. (1999) Potentialités autotoxiques et allélopathiques de Cistus albidus L. Biologie et Pathologie végétals 322, 677–685.Google Scholar
  85. Scalbert, A. (1991) Antimicrobial properties of tannins. Phytochemistry 30, 3875–3883.CrossRefGoogle Scholar
  86. Schimel, J.P., van Cleve, K., Cates, R.G., Clausen, T.P. and Reichardt, P.B. (1996) Effects of balsam poplar (Populus balsamifera) tannins and low molecular weight phenolics on microbial activity in taiga floodplain soil: implications for changes in N cycling during succession. Can. J. Bot. 74, 84–90.CrossRefGoogle Scholar
  87. Schimel, J.P., Cates, R.G. and Ruess, R. (1998) The role of Balsam poplar secondary chemicals in controlling soil nutrient dynamics through succession in the Alaskan taiga. Biogeochemistry 42, 221–234.CrossRefGoogle Scholar
  88. Shafer, S.R. and Blum, U. (1991) Influence of phenolic acids on microbial populations in the rhizosphere of cucumber. J. Chem. Ecol. 17, 369–388.CrossRefGoogle Scholar
  89. Singh, A., Tamma, R.V. and Herbert, N.N. (1989) HPLC identification of allelopathic compounds from Lantana camara. J. Chem. Ecol. 15, 81–89.CrossRefGoogle Scholar
  90. Souto, X.C., Chiapusio, G., and Pellissier, F. (2000) Relationships between phenolics and soil microorganisms in Spruce forests: significance for natural regeneration. J. Chem. Ecol. 26, 2025–2034.CrossRefGoogle Scholar
  91. Sparling, G.P., Ord, B.G. and Vaughan, D. (1981) Changes in microbial biomass and activity in soils amended with phenolic acids. Soil Biol. Biochem. 13, 455–460.CrossRefGoogle Scholar
  92. Stevenson, F.J. (1982) Humus Chemistry. Willey & Sons, New York.Google Scholar
  93. Stienstra, A.W., Gunnewiek, P.K. and Laanbroek, H.J. (1994) Repression of nitrification in soils under a climax grassland vegetation. FEMS Microbiol. Ecol. 14, 45–52.CrossRefGoogle Scholar
  94. Sugai, S.F. and Schimel, J.P. (1993) Decomposition and biomass incorporation of 14C-labeled glucose and phenolics in taiga forest-floor: effect of substrate quality, successional state, and season. Soil Biol. Biochem. 25, 1379–1389.CrossRefGoogle Scholar
  95. Vinton, A.M. and Burke, I.C. (1995) Interactions between individual plant species and soil nutrient status in shortgrass steppe. Ecology 76, 1116–1133.CrossRefGoogle Scholar
  96. Vitousek, P.M. and Howarth, R.W. (1991) Nitrogen limitation on land and sea: how can it occur? Biogeochemistry 13, 87–115.CrossRefGoogle Scholar
  97. Wallstedt, A., Nilsson, M.C., Odham, G. and Zackrisson, O. (1997) A method to quantify the allelopathic compound batatasin-III in extracts from Empetrum hermaphroditum using gas chromatography: applied on extracts from leaves of different ages. J. Chem. Ecol. 23, 2345–2355.CrossRefGoogle Scholar
  98. Wardle, D.A. and Nilsson, M.C. (1997) Microbe-plant competition, allelopathy and arctic plants. Oecologia 109, 291–293.CrossRefGoogle Scholar
  99. Wardle, D.A., Nilsson, M.C., Gallet, C. and Zackrisson, O. (1998) An ecosystem-level perspective of allelopathy. Biol. Rev. 73, 305–319.CrossRefGoogle Scholar
  100. Waterman, P.G. and Mole, S. (1994) Analysis of Phenolic Plant Metabolites. Blackwell Scientific Publications, Oxford.Google Scholar
  101. Watkinson, A.R. (1998) Reply from A.R. Watkinson. Trends Ecol. Evol. 13, 407.CrossRefGoogle Scholar
  102. Weidenhamer, J.D., Hartnett, D.C. and Romeo, J.T. (1989) Density-dependent phytotoxicity: distinguishing resource competition and allelopathic interference in plants. J. Appl. Ecol. 26, 613–624.CrossRefGoogle Scholar
  103. Zackrisson, O. and Nilsson, M.C. (1992) Allelopathic effects by Empetrum hermaphroditum on seed germination of two boreal tree species. Can. J. For. Res. 22, 1310–1319.CrossRefGoogle Scholar
  104. Zackrisson, O., Nilsson, M.C., Dahlberg, A. and Jöderlund, A. (1997) Interference mechanisms in conifer-Ericaceae-feathermoss communities. OIKOS 78, 209–220.Google Scholar
  105. Zeng, R.S. and Mallik, A.U. (2006) Selected ectomycorrhizal fungi of black spruce (Picea mariana) can detoxify phenolic compounds of Kalmia angustifolia. J. Chem. Ecol. 32, 1473–1489.PubMedCrossRefGoogle Scholar
  106. Zhu, H. and Mallik, A.U. (1994) Interactions between Kalmia and black spruce: isolation and identification of allelopathic compounds. J. Chem. Ecol. 20, 407–421.CrossRefGoogle Scholar

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© Springer Science+Business Media LLC 2008

Authors and Affiliations

  • Eva Castells
    • 1
  1. 1.Department of Natural Products, Plant Biology and EdaphologyUniversity of BarcelonaBarcelonaSpain

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