Fungal and Bacterial Diseases of Pasture Plants in New Zealand

Skipp, R. A.; Hampton, J. G.

doi:10.2134/1996.pastureforagecroppathol.c11

Cited by 6 publications

(1 citation statement)

References 42 publications

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“…Soil-borne plant pathogens can be major biological constraints to pasture establishment (Falloon, 1985;Skipp & Watson, 1996) and production (Falloon & Fletcher, 1983;O'Rourke et al, 2009). In New Zealand, soil-borne pathogens commonly-associated with diseases of grass and forage legume seedlings include Rhizoctonia solani (Kuhn), Pythium ultimum (Trow) (Skipp & Watson, 1996) and Sclerotinia trifoliorum Eriks (Skipp & Hampton, 1996). R. solani and P. ultimum can reduce establishment of grasses and legumes (Skipp & Christensen 1989a,b;Waipara et al,1996;Sarathchandra et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Trichodermaspecies for biocontrol of soil-borne plant pathogens of pasture species

Kandula

Jones

Stewart

et al. 2015

Biocontrol Science and Technology

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Soil-borne plant pathogens such as Rhizoctonia solani (Kuhn), Pythium ultimum (Trow) and Sclerotinia trifoliorum (Eriks) can reduce grass and forage legume establishment. The potential for biocontrol of these pathogens by Trichoderma fungi was evaluated. Following dual culture assays, nine Trichoderma isolates (five of T. atroviride and one each of T. hamatum, T. koningiopsis, T. viride and T. virens) were chosen for assessment in pot experiments. In the presence of R. solani, perennial ryegrass (Lolium perenne L.) emergence was increased by 60-150% by two isolates of T. atroviride and by 35-212% by the isolate of T. virens, with the increase depending on growing medium and amount of pathogen inoculum. Red clover (Trifolium pratense L.) emergence in the presence of S. trifoliorum was significantly increased by two T. atroviride isolates and the T. hamatum isolate. In the presence of P. ultimum, white clover (Trifolium repens L.) emergence was increased by 25-42% by one isolate of T. atroviride and the T. hamatum isolate. However, for all three pasture species, some Trichoderma isolates reduced seedling emergence. Seedling growth (shoot and root fresh weight/plant) of the three pasture species was significantly increased by one or more T. atroviride isolates. On the basis of these results for both disease reduction and growth promotion, four T. atroviride isolates were selected for field assessment as biocontrol agents of soilborne pathogens of pasture species.

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Section: Introductionmentioning

confidence: 99%

Trichodermaspecies for biocontrol of soil-borne plant pathogens of pasture species

Kandula

Jones

Stewart

et al. 2015

Biocontrol Science and Technology

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Seed-borne diseases in pasture grasses and legumes: state of the art and gaps in knowledge

2022

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Genetic basis of crown rust resistance in perennial ryegrass, breeding strategies, and genetic variation among pathogen populations: a review

Kimbeng¹

1999

Aust. J. Exp. Agric.

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Crown rust caused by the fungus Puccinia coronata f. sp. lolii is probably the most serious disease of perennial ryegrass (Lolium perenne L.). Breeding for resistance to crown rust is a major component of most perennial ryegrass improvement programs. This paper reviews the genetic basis of resistance to crown rust in perennial ryegrass, existing breeding strategies and their progress, and genetic variation in pathogen populations. Resistance to crown rust in perennial ryegrass appears to be controlled by both major and minor genes. Breeding for resistance to crown rust has traditionally been approached from a quantitative perspective (polygenic system), and phenotypic recurrent selection is by far the most commonly used method of selection. There appears to be considerable variation in the pathogen population which may impact on breeding progress. Owing to the present lack of information on the host–pathogen interaction system of this economically important disease, a basic model to study the L. perenne–P. coronata f. sp. lolii interaction system is presented. Its application in a breeding program is discussed.

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Fungal and Bacterial Diseases of Pasture Plants in New Zealand

Cited by 6 publications

References 42 publications

Trichodermaspecies for biocontrol of soil-borne plant pathogens of pasture species

Trichodermaspecies for biocontrol of soil-borne plant pathogens of pasture species

Seed-borne diseases in pasture grasses and legumes: state of the art and gaps in knowledge

Genetic basis of crown rust resistance in perennial ryegrass, breeding strategies, and genetic variation among pathogen populations: a review

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