Effects of root-infecting fungi on wheat transport processes and growth

Fitt, Bruce D.L.; Hornby, D.

doi:10.1016/0048-4059(78)90050-4

Cited by 30 publications

(8 citation statements)

References 14 publications

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“…Fusarium foot and root rots often lead to a stunting of plant growth (Fitt & Hornby, 1978;Weste, 1975;Cook, 1980) and this was the major symptom in this study for barley, whereas for wheat and ryegrass there was up to 90% and 60% plant death, respectively. The degree of infection on all three types of root was broadly similar, but barley plants in particular could support an extensive fungal biomass with little obvious effect on the plant.…”

Section: Discussionmentioning

confidence: 93%

Root Residues: Substrates Used By Fusarium Culmorum To Infect Wheat, Barley And Ryegrass

Gussin¹,

Lynch²

1983

Microbiology

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Fusarium culmorum was grown on different natural substrates and its subsequent pathogenicity towards wheat, barley and ryegrass studied. This fungus caused more inhibition of plant growth of all test species when grown on root residues than when present as a spore suspension in sand. More wheat seedlings were killed when sown into infected ryegrass root residues than when sown into infected wheat or barley residues. However, when ryegrass was sown into infected ryegrass roots no plant death occurred compared with over 50% when sown into infected wheat or barley. Dressing ryegrass seeds with a formulation containing calcium peroxide gave some control of F. culmorum. These results are discussed in relation to the problems that can sometimes occur following reseeding of grassland.

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Section: Discussionmentioning

confidence: 93%

Root Residues: Substrates Used By Fusarium Culmorum To Infect Wheat, Barley And Ryegrass

Gussin¹,

Lynch²

1983

Microbiology

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“…Sprague (1948) reported differential pathogenicity among isolates of M. bolleyi . Fitt and Hornby (1978) reported significant effects of M. bolleyi on growth and transport processes in wheat. Based on results reported here, isolates of this fungus in the Upper Costal Plain Land Resourse Area of Mississippi are pathogenic to wheat seedlings.…”

Section: Discussionmentioning

confidence: 99%

Identity and Pathogenicity of Fungi Associated with Root and Crown Rot of Soft Red Winter Wheat Grown on the Upper Coastal Plain Land Resource Area of Mississippi

Gonzalez

Trevathan

2000

Journal of Phytopathology

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Seedling stand, disease severity and fungal incidence were determined from untreated ‘Wakefield’ soft red winter wheat planted on a Leeper silty clay loam in field tests conducted at the Mississippi Agricultural and Forestry Experiment Station, Plant Science Research Center, Mississippi State University, Starkville, Mississippi during the 1996–97 and 1997–98 growing seasons. Seedling stand was reduced by 40% each year in plots established with untreated seed. Cochliobolus sativus was the most frequently isolated fungus. Fusarium acuminatum, Fusarium equiseti and Fusarium solani were the most prevalent Fusarium spp. Seven other Fusarium spp. and 23 species of other fungal genera were isolated. Pathogenicity tests with three isolates each of C. sativus, Cochliobolus spicifer, F. acuminatum, F. solani, F. equiseti, Fusarium compactum, Embellisia chlamydospora and Microdochium bolleyi were performed in test tube culture and two isolates each of C. sativus, C. spicifer, F. acuminatum, E. chlamydospora and M. bolleyi under greenhouse conditions. In test tubes and in the greenhouse, seedlings infected with isolates of C. sativus developed seedling blight, discoloration and necrosis, primarily in seminal roots and crowns. In the greenhouse, C. sativus induced lesions on the lower leaf sheath and reduced seedling height, seedling emergence, dry and fresh weight of roots and shoots. Isolates of F. acuminatum, F. solani, F. equiseti, F. compactum, E. chlamydospora and M. bolleyi induced slight to moderate orange to light‐brown discoloration of crown and seminal roots in test tubes. Cochliobolus spicifer isolates had the most pre‐emergence activity, inducing black root discoloration and root pruning of wheat seedlings and reducing seedling emergence, root fresh weight and shoot dry weight. In the greenhouse, F. acuminatum reduced seedling height, seedling emergence and root and shoot dry weights. Microdochium bolleyi and E. chlamydospora reduced fresh and dry weight of roots, plant emergence and shoot dry weight. Fusarium acuminatum and C. spicifer reduced the growth rate of wheat seedlings. All fungi evaluated showed increased disease severity compared to the untreated control. The high frequency of isolation of C. sativus from crown and root tissues can be partially explained by the dry, warm conditions during the early stages of wheat seedling development in the Upper Coastal Plain Land Resource Area of Mississippi.

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“…scleroteichum has been reported from sweet potato tubers in the USA (Clark and Moyer 1988;Harter and Whitney 1927;Martin 1950), wheat roots in the UK (Fitt and Hornby 1978), cassava roots in Brazil (Poltronieri et al 1997), and rubber seedlings in India (Vanitha and Jacob 1996). As far as we know, this is the fi rst report of the occurrence of P. scleroteichum in Japan.…”

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confidence: 95%

Mottle necrosis of sweet potato caused by Pythium scleroteichum in Japan and varietal difference in susceptibility to the disease

et al. 2007

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Severe mottle necrosis (Shirogusare-byo in Japanese) was found on mature tubers of sweet potato (Ipomoea batatas) in Ibaraki Prefecture in October 2004. The causal organism was identifi ed as Pythium scleroteichum hitherto unknown in Japan. Sweet potato cultivar Purple Sweet Lord was more susceptible than cultivars Beniazuma, Benimasari, Koukei-14, and Tamayutaka to the pathogen at 25°C, while this difference in the susceptibility was not clear at 15°C.

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Effects of root-infecting fungi on wheat transport processes and growth

Cited by 30 publications

References 14 publications

Root Residues: Substrates Used By Fusarium Culmorum To Infect Wheat, Barley And Ryegrass

Root Residues: Substrates Used By Fusarium Culmorum To Infect Wheat, Barley And Ryegrass

Identity and Pathogenicity of Fungi Associated with Root and Crown Rot of Soft Red Winter Wheat Grown on the Upper Coastal Plain Land Resource Area of Mississippi

Mottle necrosis of sweet potato caused by Pythium scleroteichum in Japan and varietal difference in susceptibility to the disease

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