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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
12/11/1993 |
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Data da última atualização: |
17/04/2025 |
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Autoria: |
TOTH, R.; MILLER, R. M.; JARSTFER, A. G.; ALEXANDER, T.; BENNET, E. L. |
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Título: |
The calculation of intraradical fungal biomass from percent colonization in vesicular-arbuscular mycorrhizae. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Mycologia, v. 83, n. 5, p. 553-558, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
Root colonization as estimated by the line intersect method yields a quantitative value which is related to the extent of intercellular hyphal development and the proportion of the cortex occupied by cells with arbuscules. Hence, by knowing the amount of mycorrhizal colonization, we should be able to predict fungal biovolume provided the relationship (constant) between colonization and fungal biovolume is known. We have used data from morphometric cytological studies of mycorrhiza of Allium cepa and a chitin assay for Agropyron smithii roots to determine how colonization and fungus biovolume are related in order to derive the constant (K,). We show that by using K, and measuring root radius and colonized root length, we can calculate fungal biovolume and, hence, fungal biomass for an entire root system. We show that the regression model (P < 0.000 1) for the calculated mycorrhizal fungal biomass value (x) and the actual measured value as determined by the chitin method (y) are good predictors of biomass (y = 0.22 + 1.22~;R2= 0.8 1). Moreover, we show that when fungal biomass is expressed as percent of the root system, the relationship improves (y = 0.21 + 1.09~;RZ = 0.89). This study indicates that it is possible to calculate intraradical mycorrhizal fungal biomass from col- onization data; a preliminary K, value of 0.06 is proposed |
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Thesagro: |
Biomassa; Micorriza Vesicular Arbuscular. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01942naa a2200193 a 4500
001 1279867
005 2025-04-17
008 1991 bl uuuu u00u1 u #d
100 1 $aTOTH, R.
245 $aThe calculation of intraradical fungal biomass from percent colonization in vesicular-arbuscular mycorrhizae.$h[electronic resource]
260 $c1991
520 $aRoot colonization as estimated by the line intersect method yields a quantitative value which is related to the extent of intercellular hyphal development and the proportion of the cortex occupied by cells with arbuscules. Hence, by knowing the amount of mycorrhizal colonization, we should be able to predict fungal biovolume provided the relationship (constant) between colonization and fungal biovolume is known. We have used data from morphometric cytological studies of mycorrhiza of Allium cepa and a chitin assay for Agropyron smithii roots to determine how colonization and fungus biovolume are related in order to derive the constant (K,). We show that by using K, and measuring root radius and colonized root length, we can calculate fungal biovolume and, hence, fungal biomass for an entire root system. We show that the regression model (P < 0.000 1) for the calculated mycorrhizal fungal biomass value (x) and the actual measured value as determined by the chitin method (y) are good predictors of biomass (y = 0.22 + 1.22~;R2= 0.8 1). Moreover, we show that when fungal biomass is expressed as percent of the root system, the relationship improves (y = 0.21 + 1.09~;RZ = 0.89). This study indicates that it is possible to calculate intraradical mycorrhizal fungal biomass from col- onization data; a preliminary K, value of 0.06 is proposed
650 $aBiomassa
650 $aMicorriza Vesicular Arbuscular
700 1 $aMILLER, R. M.
700 1 $aJARSTFER, A. G.
700 1 $aALEXANDER, T.
700 1 $aBENNET, E. L.
773 $tMycologia$gv. 83, n. 5, p. 553-558, 1991.
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Registro original: |
Embrapa Florestas (CNPF) |
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