Full TGIF Record # 57988
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Web URL(s):http://www.nrcresearchpress.com/doi/pdf/10.1139/b97-892
    Last checked: 09/30/2015
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Publication Type:
i
Refereed
Author(s):Miller, R. M.; Hetrick, B. A. D.; Wilson, G. W. T.
Author Affiliation:Miller: Environmental Research Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.; Hetrick: Department of Biology, Northern Iowa University, Cedar Falls, IA 50614-0421, U.S.A.; and Wilson: Department of Plant Pathology, Throckmorton Hall, Kansas State University, Manhattan, KS 66506-5502, U.S.A.
Title:Mycorrhizal fungi affect root stele tissue in grasses
Source:Canadian Journal of Botany. Vol. 75, No. 10, October 1997, p. 1778-1784.
Publishing Information:Vancouver, British Columbia: The National Research Council of Canada.
# of Pages:7
Related Web URL:http://www.nrcresearchpress.com/doi/abs/10.1139/b97-892
    Last checked: 09/30/2015
    Notes: English abstract only
Keywords:TIC Keywords: Mycorrhizal fungi; Steles; Roots; Morphology; C-3 plant; C-4 plant; Comparisons; Adaptation
Abstract/Contents:"Although arbuscular mycorrhizal symbiosis was initially believed to have little or no impact on root morphology, we now recognize that subtle changes do occur and that these changes may be of considerable consequence to host growth and nutrition, as well as functional growth strategy. In examining the stele and root diameters of C3 and C4 grasses, C4 grasses were demonstrated to have a significantly larger proportion of their fibrous roots occupied by stele tissue than do C3 grasses. In fact, functional growth strategy (C3 versus C4) was observed to be a relatively good predictor of stele area. Mycorrhizal fungi also influenced the amount of stele tissue, but the effect was not the same for both C3 and C4 grasses. The stele area of all C4 grasses except for Sorghastrum nutans was greater in the presence of mycorrhizal colonization. Among the C3 grasses, only Bromus inermis showed a significant increase, although Elymus cinereus and Lolium perenne displayed significant decreases in response to arbuscular mycorrhizal colonization. Changes in the stele area of the plant species were closely related to their responsiveness to mycorrhizal symbiosis and might in part explain both beneficial and detrimental responses of plants to mycorrhizae. An increase in stele circumference induced by depressions could be a direct outcome of reduced stele circumference. Thus, differences in stele circumference represent a possible mechanism for mycorrhizal impacts on host plants. These findings indicate that structural differences among grasses are related to different functional capabilities and further emphasize the need for better integration of comparative anatomy and morphology procedures in the study of mycorrhizal symbiosis."
Language:English
References:29
Note:Abstract also appears in French
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Miller, R. M., B. A. D. Hetrick, and G. W. T. Wilson. 1997. Mycorrhizal fungi affect root stele tissue in grasses. Can. J. Bot. 75(10):p. 1778-1784.
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http://www.nrcresearchpress.com/doi/pdf/10.1139/b97-892
    Last checked: 09/30/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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