Interrelations of Root Growth Dynamics to Epidemiology of Root-Invading Fungi

Huisman, O. C.

doi:10.1146/annurev.py.20.090182.001511

Cited by 136 publications

(87 citation statements)

References 31 publications

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“…Wet soil may indirectly cause tuber-disease problems by increasing the tuber water potential and as a result, increasing lenticel swelling and the susceptibility of the tuber to other soilborne pathogens such as soft-rot Erwinias (Cappaert et al, 1992 (Rowe and Powelson, 2002 (Huisman, 1982). However, several organisms have shown abilities to suppress the growth of soilborne pathogens (Martin and Bull, 2002 (Andrews, 1992) (Rowe and Powelson, 2002) and both head size and oil content in sunflower (Hoes, 1972).…”

Section: L0mentioning

confidence: 99%

Cross-pathogenicity of Verticillium dahliae between potato and sunflower

et al. 2009

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Section: L0mentioning

confidence: 99%

Cross-pathogenicity of Verticillium dahliae between potato and sunflower

et al. 2009

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“…Root growth is recognized as an important component in the progress of diseases caused by root infecting fungi (see Huisman, 1982) and in development of mycorrhizal root systems (see Harley & Smith, 1983). However, in the past the growth of both infected and uninfected root systems has usually been investigated in terms of weight or length of the root system as a whole or as density of roots in the soil.…”

Section: Introductionmentioning

confidence: 99%

THE DEVELOPMENT OF MYCORRHIZAL ROOT SYSTEMS IN TRIFOLIUM SUBTERRANEUM L.: GROWTH OF ROOTS AND THE UNIFORMITY OF SPATIAL DISTRIBUTION OF MYCORRHIZAL INFECTION UNITS IN YOUNG PLANTS

1986

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SUMMARYThe development of young mycorrhizal root systems (up to 28 d) has been studied by growing Trifolium subterraneum L. in soil/sand mixtures with mycorrhizal inoculum mixed throughout the pots. Rates of initiation and of apical extension of main and first-and second-order lateral roots were calculated by fitting spline functions to data collected from daily harvests. The average instantaneous rates of apical extension were found to be about 0-77, 0-2 and 0-06 cm d respectively. These values were used, together with the size and distance from the root apex ofthe most apical mycorrhizal infection unit, to calculate the frequency of mycorrhizal infection close to the root apex {A^) at 16 d. Values of A^ were found to be similar to average values for the whole main or lateral root system {A). We used plots of the size of infection units and their distances from the root apex, together with values of average rate of extension of roots (v) and rate of growth of infection units (B), to calculate the distances between entry points and the root apices at the time the entry points were formed. The results indicate that infection can occur not only immediately behind the root apex, but also to considerable distances (up to 55 mm) behind the apex in 16-d-old plants.

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“…Separate lots of an uncultivated, Warden of either race, thoroughly mixed, and airdried to induce ctrlamydospore formation (Kraft and Roberts 1969 Plants then were placed between wet paper towels and stored in plastic bags at 4"C (24-48 h) until analyzed. The technique of Huisman (1982) There is a paucity of information on how the host resistant response to vascular wilt is turned on or off (Beckman 1964, l98l).…”

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confidence: 99%