The influence of Meloidogyne incognita on the growth, physiology and nutrient content of Phaseolus vulgaris

Melakeberhan, Haddish; Brooke, R. C.; Webster, John; D’Auria, J.M.

doi:10.1016/0048-4059(85)90001-3

Cited by 33 publications

(18 citation statements)

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“…As a result, nematode-induced changes in both plant water and nutrient status led to a decrease in net photosynthetic rate. Therefore, in agreement with previous studies, nematode infection caused a reduction in leaf chlorophyll content (Audebert et al 2000 ;Ahmed et al 2009 ;Khan and Haque 2011 ;Giné et al 2014 ;López-Gómez et al 2015 ) as well as in photosynthetic activity (Loveys and Bird 1973 ;Melakeberhan et al 1985 ) as suggested by the negative relationship between Pi and net photosynthetic rate. In addition, for both grafted or ungrafted cucumber plants, relative changes in yield were also related to the relative variation in both R / [R x R ] and net photosynthetic rate, confirming previous results in which relative dry top weight of cucumber or zucchinisquash biomass (López-Gómez et al 2015 ) was related to relative leaf chlorophyll content.…”

Section: Discussionsupporting

confidence: 78%

“…Those parameters refer to nematode population growth but do not provide valuable information on marketable crop yield, which is provided by the relationship between Pi and relative crop yield by the Seinhorst damage function model, the tolerance limit and the minimum relative yield (Seinhorst 1965 ). It is known that plant growth and yield are reduced at increasing Pi above the tolerance limit due to a reduction of water and nutrient intakes, and consequently, a reduction of plant conductivity and transpiration, as well as leaf chlorophyll content and photosynthesis rate (Loveys and Bird 1973 ;Melakeberhan 2003 to Pi (Melakeberhan et al 1985 ;Giné et al 2014 ;López-Gómez et al 2015 ). Therefore, these ecophysiological parameters might be potential indicators of tolerance and yield losses, but it needs to be evaluated under field conditions.…”

Section: Introductionmentioning

confidence: 99%

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Population dynamics of Meloidogyne incognita on cucumber grafted onto the Cucurbita hybrid RS841 or ungrafted and yield losses under protected cultivation

et al. 2017

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The influence of the squash hybrid RS841 rootstock (Cucurbita maxima x C. moschata) on population dynamics of Meloidogyne incognita and yield of cucumber cv. Dasher II was assessed during 2013 and 2014 in a plastic greenhouse. In addition, the relationship between ecophysiological parameters (plant water status, gas exchange, and leaf reflectance) and Pi and cucumber yield were also estimated in 2013. Nematode densities were determined at the beginning (Pi) and at the end (Pf) of each crop, and the relationship between these parameters was used to estimate the maximum multiplication rate (a), the maximum population density (M) and the equilibrium density (E) per grafted and ungrafted cucumber and cropping season. Moreover, the relationship between the multiplication rate (Pf/Pi) and Pi was compared between grafted and ungrafted cucumber per cropping season. Finally, the relative yield of grafted or ungrafted cucumber was plotted against Pi to determine the tolerance limit (T) and the minimum relative yield (m) by the Seinhorst damage function model. Values of a, M and E in grafted cucumber were higher than in ungrafted one irrespective of the cropping season. These results were supported by comparing the relationship between Pf/Pi and Pi between grafted and ungrafted cucumber. The relationship between Pi and yield fitted the Seinhorst damage function. The values of T and m did not differ between grafted and ungrafted each year. Predawn water potential, net photosynthetic rate, and leaf chlorophyll index decreased with increasing Pi. In addition, relative yield was related to variation in net photosynthetic rate and the leaf chlorophyll index. Under the conditions of this study, RS841 rootstock was neither resistant nor tolerant to M. incognita.

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Section: Discussionsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Population dynamics of Meloidogyne incognita on cucumber grafted onto the Cucurbita hybrid RS841 or ungrafted and yield losses under protected cultivation

et al. 2017

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“…Plant growth reduction due to nematode infection was associated with reduction of photosynthesis rate for Phaseolus bean infected with Meloidogyne incognita (Melakeberhan et al, 1985) and for soybean infected with Heterodera glyeines (Poskuta et al, 1986). Schans (1991) reported a strong reduction of photosynthesis and transpiration rates of potato plants, due to invasion into roots by second stage juveniles of G. pallida, but effects of nematodes on plant growth were not investigated.…”

Section: Introductionmentioning

confidence: 97%

Photosynthesis, transpiration and plant growth characters of different potato cultivars at various densities of Globodera pallida

Schans¹,

Arntzen

1991

Netherlands Journal of Plant Pathology

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Plants of four potato (Solanum tuberosum L.) cultivars were grown in pots in a greenhouse at five densities of Globoderapallida between 0 and 300 eggs per gram of soil. Photosynthesis and transpiration of selected leaves were measured at 30, 37, 49 and 60 days after planting. Stem length was recorded at weekly intervals. Plants were harvested 70 days after planting and various plant variables were determined.At 30 days after planting, when second and third stage juveniles were present in roots, both photosynthesis and transpiration rates were severely reduced by G. pallida. In the course of time these effects became less pronounced. Water use efficiency was reduced by G. pallida between 30 and 49 days, but not at 60 days after planting. The results suggest independent effects of G.pallida on stomatal opening and on photosynthesis reactions. There were no consistent differences among cultivars in the response of leaf gas exchange rates and water use efficiency to nematode infection. Reduction of photosynthesis by G. pallida appeared additive to photosynthesis reduction due to leaf senescence.Total dry weight was reduced by 60 ~ at the highest G. pallida density. Weights of all plant organs were about proportionally affected. Shoot/root ratio was not affected and dry matter content was reduced. Stem length and leaf area were most strongly reduced during early stages of plant-nematode interaction. The number of leaves formed was only slightly reduced by G.pallida, but flowering was delayed or inhibited. Reduction of total dry weight correlated with reduction of both leaf area and photosynthesis rate. Leaf area reduction seems the main cause of reduction of dry matter production. Tolerance differences among cultivars were evident at 100 eggs per gram of soil only, where total dry weight of the intolerant partially resistant cv. Darwina was lower than that of the tolerant partially resistant cv. Elles and of the tolerant susceptible cv. Multa. The tolerance differences were not correlated with leaf photosynthesis and transpiration. Apparently these processes are not part of tolerance of plants.Additionallceywords: potato cyst nematodes, Solanum tuberosum L., host-parasite interaction, damage mechanism, tolerance, gas exchange, stomata, water use efficiency, total dry weight, leaf area, stem length.

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“…The disruption of the root system by the destructive, adaptive, and neoplastic feeding behaviors (16) impedes nutrient uptake (2,35,37) and creates a cascading effect on the physiology and metabolism of a plant (20,21,48,49,50,56,80) . Yellowing, stunting and poor growth are above ground manifestations.…”

Section: Effect Of Nematodes On Plant-nutrient Relationsmentioning

confidence: 99%

Plant, Nematode and Nutrient Relations: An Overview

Melakeberhan

1997

Jpn. J. Nematol.

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The influence of Meloidogyne incognita on the growth, physiology and nutrient content of Phaseolus vulgaris

Cited by 33 publications

References 18 publications

Population dynamics of Meloidogyne incognita on cucumber grafted onto the Cucurbita hybrid RS841 or ungrafted and yield losses under protected cultivation

Population dynamics of Meloidogyne incognita on cucumber grafted onto the Cucurbita hybrid RS841 or ungrafted and yield losses under protected cultivation

Photosynthesis, transpiration and plant growth characters of different potato cultivars at various densities of Globodera pallida

Plant, Nematode and Nutrient Relations: An Overview

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