Maize bushy stunt in native corn: implications for Mexican “subsistence farmers”

Pérez‐López, Edel; Wist, Tyler; Rodríguez, Yanet; Luna-Rodríguez, Mauricio; Olivier, Chrystel

doi:10.1007/s10668-017-9966-0

Cited by 7 publications

(7 citation statements)

References 22 publications

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“…Entre las enfermedades del maíz causadas por Mollicutes, Costa et al (2019) mencionan al achaparramiento del maíz causado por Spiroplasma kunkelii y al enanismo arbustivo del maíz, esta última, según Pérez-López et al (2018), detectada, sin base, por primera vez en México en 1955. Ambas enfermedades son transmitidas por varias especies de homópteros, siendo la principal la chicharrita del maíz (Dalbulus maidis), un insecto presente en localidades del sur de México, considerado el centro de origen del género Dalbulus (Nault, 1980; these authors was named "Maize Bushy Stunt Disease" (MBSD).…”

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“…Among the maize diseases caused by Mollicutes, Costa et al (2019) mention corn stunt caused by Spiroplasma kunkelii and the maize bushy stunt disease, the latter of which was, according to Pérez-López et al (2018), found, without a basis, for the first time in Mexico in 1955. Both diseases are transmitted by several species of homoptera, the main one being the maize leafhopper (Dalbulus maidis), an insect found in soutern Mexico, considered the birthplace of the Dalbulus genus (Nault, 1980;Tsai and Miller, 1995;Casuso, 2017).…”

Section: Fully Bilingualmentioning

confidence: 99%

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Incidence and effect on grain yield of the “monkey’s hand” disease in 29 maize genotypes

Márquez-Diego¹,

Alba²,

Rojas-Martínez³

et al. 2021

RMF

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Recientemente, se ha observado un incremento en la presencia de una posible nueva enfermedad en plantas de maíz que genera prolificidad de mazorcas que los agricultores denominan “mano de chango”. Estos síntomas se han observado en áreas tropicales, subtropicales y del altiplano de México. Observaciones iniciales, en los años 1960s, indicaron, sin pruebas, que esta enfermedad era causada por hongos, insectos, o deficiencias nutricionales con incidencia de hasta 100% y pérdidas en producción de grano. Este es el primer trabajo en que se evalúa la incidencia de la enfermedad en 21 híbridos comerciales en el Valle de Toluca, México, un híbrido comercial y una variedad nativa de polinización libre en el Valle del Mezquital, Hidalgo, y seis variedades mejoradas de polinización libre en Montecillo, Texcoco, México. La mayor incidencia y pérdidas en rendimiento de grano por la enfermedad se observó en los genotipos Aspros HC8 y la variedad nativa “Hidalgo”, en el Valle del Mezquital, Hidalgo, en donde la presencia de síntomas de la enfermedad mostró una considerable reducción en rendimiento. Es necesario continuar estudios para investigar su etiología y generar información para selección de resistencia genética a esta posible nueva enfermedad.

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Section: Fully Bilingualmentioning

confidence: 99%

Incidence and effect on grain yield of the “monkey’s hand” disease in 29 maize genotypes

Márquez-Diego¹,

Alba²,

Rojas-Martínez³

et al. 2021

RMF

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“…Its feeding activity and oviposition, in an assessment of small plants infested by a density of 10 adults/plant, can provoke up to 40% reduction of the canopy and up to 62% reduction of the root system dry weight (Waquil, 1997). Besides the damages caused by the normal development of this insect on maize plants, its harmfulness is increased by its ability to carry three relevant plant disease agents: the corn stunt spiroplasma (CSS), maize bushy stunt phytoplasma (MBSP), and maize rayado fino virus (MRFV) (Oliveira et al, 1998;Moya-Raygoza et al, 2007;Pérez-López et al, 2018). These diseases are particularly aggressive on young maize plants, and in Central America, Peru, Brazil, and Argentina their rate of infection ranges between 40 and 100% in many fields (Hruska & Gomez Peralta, 1997;Virla et al, 2003;Da Costa et al, 2019), demonstrating that D. maidis is one of the main issues for maize growers (Jones & Medina, 2020).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a physiologically based model to predict Dalbulus maidis occurrence in maize crops: validation in two different subtropical areas of South America

Rossini

Virla

Albarracin

et al. 2021

Entomologia Exp Applicata

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The maize leafhopper, Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae), is a specialist herbivore that develops on maize plants (Zea mays L., Poaceae). Every year, it is responsible for considerable reductions in yields of the maize fields of the Americas, because alongside its direct damages it is also a vector of three relevant plant pathogens. The transmitted diseases come to have a high incidence, resulting in significant yield losses, thereby forcing farmers and technicians to attempt a tight control of the fields mostly using non-specific insecticides. Decision support systems based on mathematical models may be valuable in helping to reduce the use of agrochemicals in this regard, as they can provide a projection of the future situation based on past and present data. With this precondition, this work aims to apply and validate a physiologically based model to describe populations of D. maidis developing in two experimental fields located in Argentina, which are characterised by different climatic conditions. Experimentation in the two fields involved a 3-year survey during the growing seasons 2009, 2010, and 2011, where the adult populations of maize leafhoppers were monitored from the sowing of maize plants to the end of the phenological stage at which they are most susceptible to D. maidis activity. Results showed a good response of the model in describing maize leafhopper populations, also allowing the possibility of setting a threshold for intervention and a projection of the situation if any control action is applied.

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“…This bacterial pathogen is transmitted singly or in combination with Maize bushy stunt phytoplasma (MBSP) and/or Maize rayado fino virus (MRFV) to healthy corn plants by the corn leafhopper, Dalbulus maidis , in a persistent-propagative manner. Dalbulus maidis is considered a serious pest of corn in Mexico, the Caribbean basin, and Central and South America, especially because of its competence in phytopathogen transmission and associated yield loss [ 25 , 26 , 27 ]. For example, Brazil’s corn production during the 2017–2018 period was impacted by a severe D. maidis infestation [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

“…The use of insect-resistant corn germplasm has thus far been unsatisfactory [ 29 ]. Control methods, therefore, rely on attempts to either suppress or completely eradicate the insect vector, thus resulting in indirect pathogen control [ 27 ]. Indirect corn stunt disease control has been achieved through the application of insecticides, but it is debatable as to whether it produces a significant net return [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Corn Stunt Disease: An Ideal Insect–Microbial–Plant Pathosystem for Comprehensive Studies of Vector-Borne Plant Diseases of Corn

Jones

Medina

2020

Plants

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Over 700 plant diseases identified as vector-borne negatively impact plant health and food security globally. The pest control of vector-borne diseases in agricultural settings is in urgent need of more effective tools. Ongoing research in genetics, molecular biology, physiology, and vector behavior has begun to unravel new insights into the transmission of phytopathogens by their insect vectors. However, the intricate mechanisms involved in phytopathogen transmission for certain pathosystems warrant further investigation. In this review, we propose the corn stunt pathosystem (Zea mays–Spiroplasma kunkelii–Dalbulus maidis) as an ideal model for dissecting the molecular determinants and mechanisms underpinning the persistent transmission of a mollicute by its specialist insect vector to an economically important monocotyledonous crop. Corn stunt is the most important disease of corn in the Americas and the Caribbean, where it causes the severe stunting of corn plants and can result in up to 100% yield loss. A comprehensive study of the corn stunt disease system will pave the way for the discovery of novel molecular targets for genetic pest control targeting either the insect vector or the phytopathogen.

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Maize bushy stunt in native corn: implications for Mexican “subsistence farmers”

Cited by 7 publications

References 22 publications

Incidence and effect on grain yield of the “monkey’s hand” disease in 29 maize genotypes

Incidence and effect on grain yield of the “monkey’s hand” disease in 29 maize genotypes

Evaluation of a physiologically based model to predict Dalbulus maidis occurrence in maize crops: validation in two different subtropical areas of South America

Corn Stunt Disease: An Ideal Insect–Microbial–Plant Pathosystem for Comprehensive Studies of Vector-Borne Plant Diseases of Corn

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