+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Ecological implications of anti-pathogen effects of tropical fungal endophytes and mycorrhizae

, : Ecological implications of anti-pathogen effects of tropical fungal endophytes and mycorrhizae. Ecology 88(3): 550-558

We discuss studies of foliar endophytic fungi (FEF) and arbuscular mycorrhizal fungi (AMF) associated with Theobroma cacao in Panama. Direct, experimentally controlled comparisons of endophyte free (E-) and endophyte containing (E+) plant tissues in T. cacao show that foliar endophytes ( FEF) that commonly occur in healthy host leaves enhance host defenses against foliar damage due to the pathogen ( Phytophthora palmivora). Similarly, root inoculations with commonly occurring AMF also reduce foliar damage due to the same pathogen. These results suggest that endophytic fungi can play a potentially important mutualistic role by augmenting host defensive responses against pathogens. There are two broad classes of potential mechanisms by which endophytes could contribute to host protection: (1) inducing or increasing the expression of intrinsic host defense mechanisms and (2) providing additional sources of defense, extrinsic to those of the host ( e. g., endophyte-based chemical antibiosis). The degree to which either of these mechanisms predominates holds distinct consequences for the evolutionary ecology of host-endophyte-pathogen relationships. More generally, the growing recognition that plants are composed of a mosaic of plant and fungal tissues holds a series of implications for the study of plant defense, physiology, and genetics.


PMID: 17503581

DOI: 10.1890/05-1606

Other references

Kruse, F., 1958: Paralysis of the dorsal interosseous nerve not due to direct trauma; a case showing spontaneous recovery. Neurology 8(4): 307-308

Treshow, Michael, 1963: Effects of sodium fluoride on growth of some pathogenic fungi. Phytopathology 53(8): 891-892

Brewerton, D.Arthur., 2003: Discovery: HLA and disease. This article is a personal account of the author's involvement in the discovery of HLA associations with ankylosing spondylitis; Reiter disease; acute anterior uveitis; and the arthropathies associated with psoriasis, chronic inflammatory bow...

Benson, Robert L., 1934: Allergic relations of normal and abnormal floras of the intestine. Certain strains of various bacterial spp. occurring in normal and abnormal intestinal tracts gave skin reactions with all persons tested. 1-2 intradermal inoculations caused local desensitization to the sp. injected and to all others of the same g...

Priestley, G.C.; Malt, R.A., 1969: Membrane-bound ribosomes in kidney: methods of estimation and effect of compensatory renal growth. Membrane-bound ribosomes are thought to secrete protein for export and free ribosomes to secrete protein for intracellular use. The proportion of the total ribosomes that is bound to membranes in normal mouse kidneys has been estimated by three di...

Gottlieb M.; Kaplan H.S.; Strober S., 1979: Marrow transplantation in mice given total lymphoid irradiation effect of thymus irradiation dose fraction and delay of cell infusion. Federation Proceedings 38(3 PART 1): 928

Luftig, R.B.; Calkins, P.; Yeh,, 1994: Monoclonal antibodies to the MLV protease active site that crossreact with the HIV protease. Abstracts of the General Meeting of the American Society for Microbiology 94(0): 485

R Yskina, R.V.; Kot Ysheva, M.M., 1970: Determination of the wilting coefficient on fresh and air-dry samples of soil. In a 4-year experiment, the wilting coefficient of a typical heavy loamy serozem was determined for oats and cotton on fresh and air-dry soil samples. With oats, the values obtained on air-dry samples were lower than those obtained on fresh sample...

Qiu, X-Sheng.; Zhang, J-Jie.; Yang, S-Wen.; Lv, F.; Wang, Z-Wei.; Chiew, J.; Ma, W-Wei.; Qiu, Y., 2012: Anatomical study of the pelvis in patients with adolescent idiopathic scoliosis. Standing posterior-anterior (PA) radiographs from our clinical practice show that the concave and convex ilia are not always symmetrical in patients with adolescent idiopathic scoliosis (AIS). Transverse pelvic rotation may explain this observatio...

Janiak, P.; Kasson, B.G.; Brody, M.J., 1989: Central vasopressin raises arterial pressure by sympathetic activation and vasopressin release. Although central administration of arginine vasopressin (AVP) has been reported to increase arterial pressure mediated by activation of the sympathetic system, we found that peripheral blockade of sympathetic transmission did not attenuate this pr...