Galls induced by a root-knot nematode in Petroselinum crispum (Mill.): impacts on host development, histology, and cell wall dynamics

Vilela, Roberta Mendes Isaac Ferreira; Kuster, Vinícius Coelho; Magalhães, Thiago Alves; Martini, Vitor Campana; Oliveira, Renato Marques; Oliveira, Dênis Coelho de

doi:10.1007/s00709-023-01849-3

Cited by 3 publications

(2 citation statements)

References 80 publications

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“…Even though the experimental conditions were not optimal for the tropical/subtropical species M. incognita, root galling occurred on all tested cultivars, and at least three out of six leaf parsley cultivars, namely Orfeo, Laura, and Laica, allowed good reproduction. Leaf parsley as a good host for M. incognita has been reported previously by Vilela et al [21] and Walker [22]. We assume that with a correspondingly longer experimental duration and warmer greenhouse conditions, a good reproduction of M. incognita on all leaf parsley cultivars would have been possible.…”

Section: Host Status Of Meloidogyne Hapla M Chitwoodi M Fallax and M ...supporting

confidence: 55%

“…This response seems to differ from that of other plants from the Apiaceae family, such as carrot and celery, where these Meloidogyne species are known to cause severe yield and quality damage [12,[18][19][20]. In the case of the southern root-knot nematode M. incognita, which is known for its negative impact on leaf parsley growth [14,21], the missing effect on plant biomass could have been the result of a too low temperature or a too early evaluation. As shown by Walker [22], who also evaluated the parsley plants two months after inoculation, M. incognita reduced parsley dry weight at greenhouse temperatures between 20 °C and 32 °C during the day and a minimum of 16 °C at night.…”

Section: Effect Of Meloidogyne Hapla M Chitwoodi M Fallax and M Incog...mentioning

confidence: 99%

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Host Status and Response Differences of Flat-Leaf and Curly-Leaf Parsley to Meloidogyne hapla, M. chitwoodi, M. fallax, and M. incognita Infestation

Noskov,

Blum,

Komnik

et al. 2024

Plants

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Leaf parsley growth and productivity are often affected by pathogen infection. Root-knot nematodes of the genus Meloiogyne are common pathogens reported on leaf parsley. The response of leaf parsley to Meloidogyne species in tropical and subtropical regions is quite known, while in temperate regions, comparable information is still scarce. In this study, we evaluated the host status and response of three flat-leaf (Laica, Laura, Gigante d’Italia) and three curly-leaf (Grüne Perle, Orfeo, Sombre) parsley cultivars to Meloidogyne species from temperate regions, i.e., M. hapla, M. chitwoodi, and M. fallax, as well as to the southern root-knot nematode M. incognita. Evaluation was based on measuring plant biomass and nematode reproduction nine weeks after nematode inoculation. Our results showed that all four Meloidogyne species did not cause the reduction in leaf parsley growth under the given experimental conditions. Regarding the host status of leaf parsley cultivars for Meloidogyne, results were variable. All six parsley cultivars were found to be good hosts for M. hapla. Regarding M. chitwoodi, the host status could not be clarified properly; however, each cultivar allowed nematode reproduction at least in one experiment. For M. fallax, flat-leaf parsley turned out to be less susceptible than curly-leaf parsley; and for M. incognita, Orfeo, Laura, and Laica were classified as good hosts, Grüne Perle and Sombre as poor hosts, and Gigante d’Italia as a non-host. Amongst all tested cultivars, Gigante d’Italia was found to be the least susceptible cultivar due to its poor host status for M. chitwoodi and non-host status for M. fallax and M. incognita. Infection with M. hapla, M. chitwoodi, and M. incognita, but not with M. fallax, resulted in distinct gall formation on the roots of all six leaf parsley cultivars.

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Section: Host Status Of Meloidogyne Hapla M Chitwoodi M Fallax and M ...supporting

confidence: 55%

Section: Effect Of Meloidogyne Hapla M Chitwoodi M Fallax and M Incog...mentioning

confidence: 99%

Host Status and Response Differences of Flat-Leaf and Curly-Leaf Parsley to Meloidogyne hapla, M. chitwoodi, M. fallax, and M. incognita Infestation

Noskov,

Blum,

Komnik

et al. 2024

Plants

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Nutritive tissue rich in reserves in the cell wall and protoplast: the case of Manihot esculenta (Euphorbiaceae) galls induced by Iatrophobia brasiliensis (Diptera, Cecidomyiidae)

de Souza,

de Oliveira,

Dalvi

et al. 2023

Protoplasma

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Assessing performance of simplified bioassays for soil-borne pathogens in smallholder systems of western Kenya

Mutai,

Stewart,

Medvecky

et al. 2024

Front. Plant Sci.

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IntroductionSoil-borne pathogens cause considerable crop losses and food insecurity in smallholder systems of sub-Saharan Africa. Soil and crop testing is critical for estimating pathogen inoculum levels and potential for disease development, understanding pathogen interactions with soil nutrient and water limitations, as well as for developing informed soil health and disease management decisions. However, formal laboratory analyses and diagnostic services for pathogens are often out of reach for smallholder farmers due to the high cost of testing and a lack of local laboratories.MethodsTo address this challenge, we assessed the performance of a suite of simplified soil bioassays to screen for plant parasitic nematodes (e.g., Meloidogyne, Pratylenchus) and other key soil-borne pathogens (Pythium and Fusarium). We sampled soils from on-farm trials in western Kenya examining the impact of distinct nutrient inputs (organic vs. synthetic) on bean production. Key soil health parameters and common soil-borne pathogens were evaluated using both simple bioassays and formal laboratory methods across eleven farms, each with three nutrient input treatments (66 samples in total).Results and DiscussionThe soil bioassays, which involved counting galls on lettuce roots and lesions on soybean were well correlated with the abundance of gall forming (Meloidogyne) and root lesion nematodes (e.g., Pratylenchus) recovered in standard laboratory-based extractions. Effectiveness of a Fusarium bioassay, involving the counting of lesions on buried bean stems, was verified via sequencing and a pathogenicity test of cultured Fusarium strains. Finally, a Pythium soil bioassay using selective media clearly distinguished pathogen infestation of soils and infected seeds. When examining management impact on nematode communities, soils amended with manure had fewer plant parasites and considerably more bacterivore and fungivore nematodes compared to soils amended with synthetic N and P. Similarly, Pythium presence was 35% lower in soils amended with manure, while the Fusarium assays indicated 23% higher Fusarium infection in plots with amended manure. Our findings suggest that relatively simple bioassays can be used to help farmers assess soil-borne pathogens in a timely manner, with minimal costs, thus enabling them to make informed decisions on soil health and pathogen management.

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Galls induced by a root-knot nematode in Petroselinum crispum (Mill.): impacts on host development, histology, and cell wall dynamics

Cited by 3 publications

References 80 publications

Host Status and Response Differences of Flat-Leaf and Curly-Leaf Parsley to Meloidogyne hapla, M. chitwoodi, M. fallax, and M. incognita Infestation

Host Status and Response Differences of Flat-Leaf and Curly-Leaf Parsley to Meloidogyne hapla, M. chitwoodi, M. fallax, and M. incognita Infestation

Nutritive tissue rich in reserves in the cell wall and protoplast: the case of Manihot esculenta (Euphorbiaceae) galls induced by Iatrophobia brasiliensis (Diptera, Cecidomyiidae)

Assessing performance of simplified bioassays for soil-borne pathogens in smallholder systems of western Kenya

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