Dieback and mortality of South African fynbos shrubs is likely driven by a novel pathogen and pathogen-induced hydraulic failure

Austral Ecology

Volumn 37, Issue 2, 2012, Pages 227-235

  Jacobsen, Anna L ^a   Roets, Francois ^b   Jacobs, Shayne M ^b   Esler, Karen J ^b   Pratt, R Brandon ^a  

^a CALIFORNIA STATE UNIVERSITY   (United States)

^b STELLENBOSCH UNIVERSITY   (South Africa)

Author keywords

Brunia nodiflora; Fynbos; Leucadendron; Mediterranean type ecosystem; Pythium; Water stress

Indexed keywords

CLIMATE CHANGE; DOMINANCE; DROUGHT STRESS; DRY SEASON; ENVIRONMENTAL STRESS; FUNGUS; INFECTIVITY; MORTALITY; PARASITIC DISEASE; PATHOGENICITY; PLANT COMMUNITY; SHRUB;

SOUTH AFRICA;

BRUNIA; BRUNIA NODIFLORA; ERICA; ERICACEAE; FUNGI; LEUCADENDRON; PROTEACEAE; PYTHIUM;

EID: 84858862684     PISSN: 14429985     EISSN: 14429993     Source Type: Journal    
DOI: 10.1111/j.1442-9993.2011.02268.x     Document Type: Article

References (56)

1. Alarćon J. J., Sánchez-Blanco M. J., Bolarín M. C. & Torrecillas A. (1993) Water relations and osmotic adjustment in Lycopersicon esculentum and L. pennellii during short-term salt exposure and recovery. Physiol. Plantarum 89, 441-7.
2. Albertson F. W. & Weaver J. E. (1945) Injury and death or recovery of trees in prairie climate. Ecol. Monogr. 15, 393-433.
3. Ali-Shtayeh M. S., Chee Len L.-H. & Dick M. W. (1986) The phenology of Pythium (Peronosporomycetidae) in soil. J. Ecol. 74, 823-40.
4. Allen C. D., Macalady A. K., Chenchouni H. etal. (2010) A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests. For. Ecol. Manage. 259, 660-84.
5. Anagnostakis S. L. (1987) Chestnut blight: the classical problem of an introduced pathogen. Mycologia 79, 23-7.
6. Anderson R. C., Gardner D. E., Daehler C. C. & Meinzer F. C. (2002) Dieback of Acacia koa in Hawaii: ecological and pathological characteristics of affected stands. For. Ecol. Manage. 162, 273-86.
7. Augé R. M., Schekel K. A. & Wample R. L. (1986) Osmotic adjustment in leaves of VA mycorrhizal and nonmycorrhizal rose plants in response to drought stress. Plant Physiol. 82, 765-70.
8. Augspurger C. K. & Wilkinson H. T. (2007) Host specificity of pathogenic Pythium species: implications for tree species diversity. Biotropica 39, 702-8.
9. Brasier C. M. (1996) Phytophthora cinnamomi and oak decline in southern Europe: environmental constraints including climate change. Ann. For. Sci. 53, 347-58.
10. Brodribb T. J. & Holbrook N. M. (2003) Stomatal closure during leaf dehydration, correlation with other leaf physiological traits. Plant Physiol. 132, 2166-73.
11. Brodribb T. J., Holbrook N. M., Edwards E. J. & Gutiérrez M. V. (2003) Relations between stomatal closure, leaf turgor and xylem vulnerability in eight tropical dry forest trees. Plant Cell Environ. 26, 443-50.
12. Carlquist S. (1978) Wood anatomy of Bruniaceae. Aliso 9, 323-64.
13. Carlquist S. (1991) Leaf anatomy of Bruniaceae: ecological, systematic and phylogenetic aspects. Bot. J. Linn. Soc. 107, 1-34.
14. Davis S. D., Ewers F. W., Sperry J. S., Portwood K. A., Crocker M. C. & Adams G. C. (2002) Shoot dieback during prolonged drought in Ceanothus (Rhamnacaee) chaparral of California: a possible case of hydraulic failure. Am. J. Bot. 89, 820-8.
15. Dawson P. & Weste G. (1989) Changes in water relations associated with infection by Phytophthora cinnamomi. Aust. J. Bot. 30, 393-400.
16. Dobbertin M., Baltensweiler A. & Rigling D. (2001) Tree mortality in an unmanaged mountain pine (Pinus mugo var. uncinata) stand in the Swiss National Park impacted by root rot fungi. For. Ecol. Manage. 145, 79-89.
17. Dore M. H. I. (2005) Climate change and changes in global precipitation patterns: what do we know? Environ. Int. 31, 1167-81.
18. Fensham R. J., Fairfax R. J. & Ward D. P. (2009) Drought-induced tree death in savanna. Glob. Chang. Biol. 15, 380-7.
19. 2 assimilation, transpiration and root growth of Fagus sylvatica infested with four different Phytophthora species. Plant Biol. 4, 144-52.
20. Germishuizen G., Meyer N. L., Steenkamp Y. & Keith M., eds (2006) A Checklist of South African Plants. Southern African Botanical Diversity Network Report No 41. Pretoria, South Africa: SABONET.
21. Gold S. E. & Stanghellini M. E. (1985) Effects of temperature on Pythium root rot of spinach grown under hydroponic conditions. Phytopathology 75, 333-7.
22. Goldblatt P. & Manning J. (2000) Strelitzia 9: Cape Plants: A Conspectus of the Cape Flora of South Africa. pp. 743. National Botanical Institute, Pretoria; Missouri Botanical Garden Press, St. Louis.
23. Grimm G. R. & Alexander A. (1973) Citrus leaf pieces as traps for Phytophthora parasitica from soil slurries. Phytopathology 63, 540-4.
24. Hernández M. E. S., Dávila A. R., de Algaba A. P., López M. A. B. & Casas A. T. (1998) Occurrence of etiology of death of young olive trees in southern Spain. Eur. J. Plant Pathol. 104, 347-57.
25. Higginbotham R. W., Paulitz T. C. & Kidwell K. K. (2004) Virulence of Pythium species isolated from wheat fields in eastern Washington. Plant Dis. 88, 1021-6.
26. Jacobsen A. L., Agenbag L., Esler K. J., Pratt R. B., Ewers F. W. & Davis S. D. (2007) Xylem density, biomechanics and anatomical traits correlate with water stress in 17 evergreen shrub species of the Mediterranean-type climate region of South Africa. J. Ecol. 95, 171-83.
27. Kannwischer M. E. & Mitchell D. J. (1978) The influence of a fungicide on the epidemiology of black shank of tobacco. Phytopathology 68, 1760-5.
28. Kelly A. E. & Goulden M. L. (2008) Rapid shits in plant distribution with recent climate change. Proc. Natl. Acad. Sci. U.S.A. 105, 11823-6.
29. Koide R. T., Robichaux R. H., Morese S. R. & Smith C. M. (1989) Plant water status, hydraulic resistance and capacitance. In: Plant Physiological Ecology: Field Methods and Instrumentation. (eds R. W. Pearcy, J. Ehleringer, H. A. Mooney & P. W. Rundel ) pp. 161-83. Chapman and Hall, New York.
30. Le Maitre D. C., Jones C. A. & Forsyth G. G. (1992) Survival of eight woody sprouting species following an autumn fire in Swartsboskloof, Cape Province, South Africa. S. Afr. J. Bot. 58, 405-13.
31. Lloret F., Siscard D. & Dalmases C. (2004) Canopy recovery after drought dieback in holm-oak Mediterranean forests of Catalonia (NE Spain). Glob. Chang. Biol. 10, 2092-9.
32. McDowell N., Pockman W. T., Allen C. D. etal. (2008) Mechanisms of plant survival and mortality during drought: why do some plants survive while others succumb to drought? New Phytol. 178, 719-39.
33. Martin F. N. & Loper J. E. (1999) Soilborne plant diseases caused by Pythium spp.: ecology, epidemiology, and prospects for biological control. Crit. Rev. Plant Sci. 18, 111-81.
34. Miller R. E. & Huenneke L. F. (1996) Size decline in Larrea tridentata (creosotebush). Southwest. Nat. 41, 248-50.
35. Milton S. J. (2003) Vegetation Survey: Paarl Mountain Nature Reserve. Final Report, November 2003. Paarl Mountain Nature Preserve, Paarl, South Africa.
36. Miriti M. N., Rodríguez-Burticá S., Wright S. J. & Howe H. F. (2007) Episodic death across species of desert shrubs. Ecology 88, 32-6.
37. Mueller R. C., Scudder C. M., Porter M. E., Trotter T. III, Gehring C. A. & Whitham T. G. (2005) Differential tree mortality in response to severe drought: evidence for long-term vegetation shifts. J. Ecol. 93, 1085-93.
38. Nelson E. B. & Craft C. M. (1991) Identification and comparative pathogeneticity of Pythium spp. from roots and crowns of turfgrasses exhibiting symptoms of root rot. Phytopathology 81, 1529-36.
39. Ogle K., Whitham T. G. & Cobb N. S. (2000) Tree-ring variation in pinyon predicts likelihood of death following severe drought. Ecology 81, 3237-43.
40. Packer A. & Clay K. (2000) Soil pathogens and spatial patterns of seedling mortality in a temperate tree. Nature 404, 278-81.
41. Peñuelas J., Lloret F. & Montoya R. (2001) Severe drought effects on Mediterranean woody flora in Spain. For. Sci. 47, 214-18.
42. Pieczarka D. J. & Abawi G. S. (1978) Populations and biology of Pythium species associated with snap bean roots and soils in New York. Phytopathology 68, 409-16.
43. Pratt R. B., Jacobsen A. L., Golgotiu K. A., Sperry J. S., Ewers F. W. & Davis S. D. (2007) Life history and water stress tolerance in nine California chaparral species (Rhamnaceae). Ecol. Monogr. 77, 239-53.
44. Quint M. & Classen-Bockhoff R. (2006) Phylogeny of Bruniaceae based on matK and ITS sequence data. Int. J. Plant Sci. 167, 135-46.
45. Rebelo T., Le Maitre D., Schutte-Vlok A. etal. (2009) Alarming plant dieback in the Outeniquas: is this an indication of global warming? Veld Flora 95, 34-5.
46. Rizzo D. M. & Garbelotto M. (2003) Sudden oak death: endangering California and Oregon forest ecosystems. Front. Ecol. Environ. 1, 197-204.
47. Robin C., Desprez-Loustau M.-L., Capron G. & Delatour C. (1998) First record of Phytophthora cinnamomi on cork and holm oaks in France and evidence of pathogenicity. Ann. Sci. For. 55, 869-83.
48. Rodrigues M. L., Chaves M. M., Wendles R. etal. (1993) Osmotic adjustment in water stressed grapevine leaves in relation to carbon assimilation. Aust. J. Plant Physiol. 20, 309-21.
49. Sala A., Piper F. & Günter H. (2010) Physiological mechanisms of drought-induced tree mortality are far from being resolved. New Phytol. 186, 274-81.
50. Suarez M. L., Ghermandi L. & Kitzberger T. (2004) Factors predisposing episodic drought-induced tree mortality in Nothofagus - site, climatic sensitivity, and growth trends. J. Ecol. 92, 954-66.
51. Swift C. C., Jacobs S. M. & Esler K. J. (2008) Drought induced xylem embolism in four riparian trees from the Western Cape Province: insights and implications for planning and evaluation of restoration. S. Afr. J. Bot. 74, 508-16.
52. The World Bank (2009) World Development Report 2009: Reshaping Economic Geography. The World Bank, Washington DC.
53. Trenberth K. E., Dai A., Rasmussen R. M. & Parsons D. B. (2003) The changing character of precipitation. Bull. Am. Meteor. Soc. 84, 1205-17.
54. Von Broembsen S. L. & Kruger F. J. (1985) Phytophthora cinnamomi associated with mortality of native vegetation in South Africa. Plant Dis. 69, 715-17.
55. Weste G. & Marks G. C. (1987) The biology of Phytophthora cinnamomi in Australasian forests. Annu. Rev. Phytopathol. 25, 207-29.
56. Wills R. T. (1992) The ecological impact of Phytophthora cinnamomi in the Stirling Range National Park, Western Australia. Aust. J. Ecol. 17, 145-59.