Influence of Nematodes on Absorption and Accumulation of Nutrients in Vetch

Jenkins, W. R.; Malek, R. B.

doi:10.1097/00010694-196601000-00010

Cited by 12 publications

(5 citation statements)

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“…Increase of N and P and decrease of Ca in the roots of Capsicum infected with M. incognita acrita was observed by Shafiee & Jenkins (1963). On the other hand, Jenkins & Malek (1966) detected increase of N and decrease of Ca and P in the roots of vetch (Vicia villosa Roth) infected with M. hapla Chitwood. In the leaves, they also observed a decrease of Ca and P, but N was not altered.…”

Section: Introductionmentioning

confidence: 93%

Uptake and translocation of nitrogen, phosphorus and calcium in soybean infected with Meloidogyne incognita and M. javanica

Carneiro

Mazzafera

Ferraz³

et al. 2002

Fitopatol. bras.

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Two soybean (Glycine max) cultivars were used in this study, Ocepar 4, rated as moderately resistant to Meloidogyne incognita race 3 but susceptible to M. javanica, and 'BR 16', susceptible to both nematodes. The effect of nematodes infection on the uptake and transport of N, P and Ca to the shoot was studied in plants growing in a split root system. The upper half was inoculated with 0, 3,000, 9,000 or 27,000 eggs/plant while the lower half received 15N, 32P or 45Ca. Infected plants showed an increase of root but a decrease of shoot mass with increasing inoculum levels. In general, total endogenous nutrients increased in the roots and tended to decrease in the shoots with increasing inoculum levels. When concentrations were calculated, there was an increase in the three nutrients in the roots, and an increase of Ca but no significant variation of N and P was observed in the shoots. The total amount of 15N in the roots increased at the highest inoculum levels but 32P and 45Ca decreased. In the shoots there was a reduction of 32P and 45Ca. The specific concentrations of the labelled nutrients (abundance or radioactivity/tissue mass) also showed a decrease of 32P and 45Ca in the shoots and roots of infected plants and an increase of 15N in the shoots. Considering that overall nutrient concentrations reflect cumulative nutrient uptake and the data from labelled elements gave information at a specific moment of the infection, thus nematodes do interfere with nutrient uptake and translocation.

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Section: Introductionmentioning

confidence: 93%

Uptake and translocation of nitrogen, phosphorus and calcium in soybean infected with Meloidogyne incognita and M. javanica

Carneiro

Mazzafera

Ferraz³

et al. 2002

Fitopatol. bras.

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“…There are many observations on the differences between nematode infected and non-infected plants on the concentrations of such elements as nitrogen, phosphorus, potassium, calcium, and magnesium. Absorption, translocation, and accumulation of mineral constituents are changed following infection (Heald and Jenkins, 1964;Jenkins and Malek, 1966).…”

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confidence: 99%

Growth analysis in several peanut cultivars and the effect of peanut root-knot nematode (Meloidogyne arenaria) on peanut yields /

Senthong¹

1979

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Effect of the root-knot nematode, Meloidogyne arenaria , ,i on number of pegs when inoculated at different growth stages of the peanut breeding line UF 77118 44 10 Effect of the root-knot nematode, Mel oidogyne arenari a , on number of pods when inoculated at different growth stages of the peanut breeding line UF 77118 45 11 Effect of the root-knot nematode, Meloidogyne arenaria , on total phytomass when inoculated at different growth stages of the peanut breeding line UF 77118 47 12 Linear regression equation indicating the effect of the root-knot nematode, Meloidogyne arenaria , on crop growth rate 48 v

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“…Bergeson (19681. Jenkins and Malek (1966). Maung and Jenkins (19591. plus grande concentration dans les plantes infectees comparativement aux saines.…”

Section: )mentioning

confidence: 99%

Pathology of Meloidogyne— Galling, Giant Cell Formation, Effects on Host Physiology

Dropkin

1972

EPPO Bulletin

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Gall Formation. The hypothesis that the localized tissue reaction to invasion by infective larvae results from the introduction of growth regulators by the nematodes is put forward. Critical evidence in support of the hypothesis is lacking, but there is some evidence that auxins are present in nematodes. It is suggested that Meloidogyne respond to a signal, from the plant, to release the galling stimulus. Giant Cell Formation. The organization of a localized source of proteins in the giant cells under the direction of the developing, female nematode is the outstanding characteristic of Meloidogyne infections. A number of possible mechanisms are considered. A. The nematode may remove important end‐products such as amino acids or peptides. B. The developing larva may introduce specific regulators of protein synthesis, such as nucleic acids. C. Growth regulators are known to control protein synthesis. D. The nematode may affect the permeability of the membranes, increasing the flow of important ions into giant cells. E. The carbohydrases and proteolytic enzymes of Meloidogyne may affect the patterns of wall formation and nuclear division. F. A specific inhibitor of cell wall formation could account for many of the observations. Effects on Host Physiology. An increased ratio of root/shoot weights is characteristic of Meloidogyne infections. The nematode affects top growth by altering the traffic patterns of export and import between root and stem. In the field, this is manifest as increased susceptibility to water stress, reduced top growth, and especially, increased damage to roots by other micro‐organisms.

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Influence of Nematodes on Absorption and Accumulation of Nutrients in Vetch

Cited by 12 publications

References 0 publications

Uptake and translocation of nitrogen, phosphorus and calcium in soybean infected with Meloidogyne incognita and M. javanica

Uptake and translocation of nitrogen, phosphorus and calcium in soybean infected with Meloidogyne incognita and M. javanica

Growth analysis in several peanut cultivars and the effect of peanut root-knot nematode (Meloidogyne arenaria) on peanut yields /

Pathology of Meloidogyne— Galling, Giant Cell Formation, Effects on Host Physiology

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