Weeds as Potential Hosts for Fungal Root Pathogens of Watermelon

Júnior, Rui Sales; Rodrigues, Ana Paula Medeiros dos Santos; Negreiros, Andréia Mitsa Paiva; Ambrósio, Márcia Michelle de Queiroz; Barboza, Hailton da Silva; Beltrán, Roberto

doi:10.1590/1983-21252019v32n101rc

Cited by 6 publications

(4 citation statements)

References 14 publications

(8 reference statements)

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“…Nevertheless, there is still no specific report mentioning the amount of dropped results caused by weed competition with the cultivated crops. The presence of weed in the horticultural land can indirectly be the alternative host for some pathogens, namely bacteria, fungi, viruses, and nematode (Sales Júnior et al, 2019). A. conyzoides can be an alternative host for Begomovirus (Leke et al, 2012).…”

Section: Results and Discussion Nematode Infection Symptoms On Weedsmentioning

confidence: 99%

Plant-Parasitic Nematodes Associated With Common Horticultural Weeds

Munif¹,

Butarbutar²,

Pradana

et al. 2022

Pak. J. Phytopathol.

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Section: Results and Discussion Nematode Infection Symptoms On Weedsmentioning

confidence: 99%

Plant-Parasitic Nematodes Associated With Common Horticultural Weeds

Munif¹,

Butarbutar²,

Pradana

et al. 2022

Pak. J. Phytopathol.

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“…This is the first molecular diagnosis of M. phaseolina associated with watermelon in Northeastern Brazil. Negreiros et al (2019) andSales Júnior et al (2019a) reported the pathogen associated with weeds infesting melon and watermelon production fields in the region. In watermelon, charcoal rot caused by M. phaseolina occurs at the end of the crop cycle and symptoms are directly influenced by the infestation level in the growing areas (Cohen et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

A simple and cost-effective diagnostic of Macrophomina phaseolina on watermelon by direct PCR

Silva¹,

Aquino²,

Costa³

et al. 2022

Acta Sci. Agron.

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Macrophomina phaseolina (Tassi) Goid is the causal agent of charcoal rot and vine decline in cucurbits such as watermelon. Molecular methods have been used for rapid identification. However, a large number of steps used reduces its applicability. This study aimed to detect M. phaseolina in watermelon from producing areas in Northeastern Brazil by direct PCR. Plant tissue samples were collected from seven producing areas and the DNA was extracted using the CTAB method. Amplifications were performed by direct PCR using the MpKFI/MpKRI primers, then the PCR products were subjected to agarose gel electrophoresis and sequenced. Amplicons of 350 bp were observed in stem tissue samples from three areas. The identity of the samples was confirmed by sequencing. This study represents the first molecular diagnosis of M. phaseolina associated with watermelon in Northeastern Brazil. The methodology presented here can be applied for a reliable and simple diagnosis of the pathogen in other crops.

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“…Continuous cropping and expansion of planted areas without effective disease management increased the incidence and severity of numerous pathologies in producing fields in the Northeast region (SALES JÚNIOR et al, 2019). Root rot and vine declining (RRVD), caused by soilborne fungi species, limits melon production in the region (PORTO et al, 2019;SALES JÚNIOR et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

GENETIC SIMILARITY OF Macrophomina pseudophaseolina ISOLATES ASSOCIATED WITH WEEDS IN THE BRAZILIAN SEMIARID REGION

et al. 2020

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Macrophomina pseudophaseolina has recently been reported in association with weeds in melon producing areas in Northeastern Brazil. Species from this genus are the causal agents of root rot and vine decline (RRVD) in melon, reducing its productivity. It is needed to know the genetic variability of the pathogen to develop effective control methods. Thus, this work aimed to assess the genetic diversity among M. pseudophaseolina isolates collected from the weeds Trianthema portulacastrum L. and Boerhavia diffusa L. using ISSR and RAPD markers. For this, 41 M. pseudophaseolina isolates were submitted to amplification with five ISSR and ten RAPD primers. Genetic similarity was analyzed using the Jaccard’s coefficient and cluster analysis was performed by the UPGMA method. Combining data from both markers, the 41 isolates were separated into eight groups. Most groups were not arranged according to geographical origin and host of the pathogen. The genetic similarity among isolates ranged from 0.15 to 0.87. On the other hand, the highest genetic dissimilarity (85%) was observed between the isolate MpBr11, collected from T. portulacastrum in Icapuí (CE), and MpBr65, collected from B. diffusa in Assú (RN). Results obtained herein can assist breeding programs for the selection of resistance sources and the development of effective control methods against RRVD in melon.

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Weeds as Potential Hosts for Fungal Root Pathogens of Watermelon

Cited by 6 publications

References 14 publications

Plant-Parasitic Nematodes Associated With Common Horticultural Weeds

Plant-Parasitic Nematodes Associated With Common Horticultural Weeds

A simple and cost-effective diagnostic of Macrophomina phaseolina on watermelon by direct PCR

GENETIC SIMILARITY OF Macrophomina pseudophaseolina ISOLATES ASSOCIATED WITH WEEDS IN THE BRAZILIAN SEMIARID REGION

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