Resistance of cassava genotypes to Bemisia tuberculata

Barilli, Diandro Ricardo; Wengrat, Ana Paula Gonçalves da Silva; Guimarães, Ana Tereza Bittencourt; Pietrowski, Vanda; Ringenberg, Rudiney; Garcia, Mauro Silveira

doi:10.1007/s11829-019-09694-z

Cited by 9 publications

(11 citation statements)

References 17 publications

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“…The findings reported here have implications for future investigations. Plant resistance is a preferred choice for pest management, particularly for cassava crops, which are utilized in low-income and familiar agriculture (Barilli et al, 2019). Cassava plant breeding programs, including insect pest resistance assessments, could be successful if field experiments occurred in regions where all pest species occur, as this would establish a complete characterization of the responses of the cultivars to all species.…”

Section: Resultsmentioning

confidence: 99%

Occurrence and distribution of lace bug, whitefly, and shoot fly pest species on cassava (Manihot esculenta) crops according to region in Paraná State, Brazil

Androcioli¹,

Hoshino²,

Gisloti³

et al. 2022

Semina: Ciênc. Agrár.

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The cassava (Manihot esculenta Crantz) crop is relevant for human livelihoods, particularly in poorer regions. It is consumed fresh or as industrialized flour, and the roots and aerial parts are also used to feed livestock. Pests may limit cassava production, which may endanger food security due to the socioeconomic importance of the crop. Reports of the occurrence of three insect guilds, lace bugs, shoot flies, and whiteflies have been recorded in Paraná State, Brazil, but the distinct species and their distribution are yet to be determined. This lack of information limits the development of strategies to mitigate pest damage. Surveys were conducted in 39 counties (four farms per county) distributed throughout the state that encompass the various socioeconomic regions. The collected material was properly packed and sent to the laboratory for identification, and the following species were identified: lace bugs Vatiga illudens Drake, 1922 and Vatiga manihotae Drake, 1922 (both Hemiptera: Tingidae); whiteflies Bemisia tuberculata (Bondar, 1923) and Aleurothrixus aepim (Goeldi, 1886) (both Hemiptera: Aleyrodidae), and the cassava shoot fly Neosilba perezi Romero & Ruppel, 1973 (Diptera: Lonchaeidae) in Paraná State. Lace bugs were not found in the samples in the eastern and southern portions of the state. V. illudens was more widespread than V. manihotae. The whitefly A. aepim was not observed in three counties (eastern, southern, and central regions), whereas B. tuberculata and the cassava shoot fly were found in all regions sampled in Paraná State. Suggestions for future investigations of pest management are proposed.

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Section: Resultsmentioning

confidence: 99%

Occurrence and distribution of lace bug, whitefly, and shoot fly pest species on cassava (Manihot esculenta) crops according to region in Paraná State, Brazil

Androcioli¹,

Hoshino²,

Gisloti³

et al. 2022

Semina: Ciênc. Agrár.

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“…This type of resistance allows to control a wide spectrum of insects (Bellotti and Kawano, 1980). It is reported to MEcu 72 that present resistance against different species of whitefly, as B. tabaci biotype B (Omongo et al, 2012), A. socialis (Bellotti and Arias, 2001;Carabalí et al, 2010a;2010b) and B. tuberculata (Barilli et al, 2019), which resulted in decrease of nymphal survival rate and reduced fecundity and longevity of adults.…”

Section: Discussionmentioning

confidence: 99%

“…It is possible to point out that for this species, the genotype MEcu 72 is unsuitable for the development. Rheinheimer (2013) and Barilli et al, (2019), using biological parameters such as duration of nymphs, adults' longevity and fecundity, classified MEcu 72 as resistant to P. manihoti and B. tuberculata. Also according Barilli et al (2019), Santa Helena was resistant to B. tuberculata and Rheinheimer (2013) classified Santa Helena as moderately resistant to P. manihoti.…”

Section: Discussionmentioning

confidence: 99%

“…Rheinheimer (2013) and Barilli et al, (2019), using biological parameters such as duration of nymphs, adults' longevity and fecundity, classified MEcu 72 as resistant to P. manihoti and B. tuberculata. Also according Barilli et al (2019), Santa Helena was resistant to B. tuberculata and Rheinheimer (2013) classified Santa Helena as moderately resistant to P. manihoti. In the present study, this genotype has been shown susceptible to V. manihotae providing adequate development of the insect.…”

Section: Discussionmentioning

confidence: 99%

“…Some cassava genotypes have been showing resistance to certain species of pests, as is the case of MEcu 72 genotype (Bellotti et al, 2012) to Aleurotrachelus socialis Bondar, 1923 (Bellotti andArias, 2001;Carabalí et al, 2010a;2010b), Bemisia tuberculata Bondar, 1923(Barilli et al, 2019 and B. tabaci (Gennadius, 1889) (Hemiptera: Aleyrodidae) (Omongo et al, 2012). These insects when fed on MEcu 72 genotype have shown an increase in the development period, increase in the nymphal mortality rates and decrease of nymphal size and adults fecundity.…”

Section: Introductionmentioning

confidence: 99%

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Resistance of cassava genotypes to Vatiga manihotae (Drake 1922) (Hemiptera: Tingidae)

Wengrat

Barilli

Uemura-Lima

et al. 2020

Rev. Bras. entomol.

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Vatiga manihotae (Drake 1922) (Hemiptera: Tingidae) is an important cassava pest due to the great potential damage and the increasing population in recent years. However, few studies about bioecology and control of the cassava lace bug have been conducted and their results don't provide adequate control strategies. An alternative to maintain the population below economic injury levels is through the adoption of host plant resistance. To improve the understanding about the bioecology and find new sources of resistance in cassava, the biological parameters and demographics of V. manihotae on five cassava genotypes (Santa Helena, MEcu 72, Col 22, Clone 02 and Clone 03) under controlled conditions (25±2°C, 14L/10D) were evaluated. Duration and viability of the stages, the period egg-adult, sex ratio, the pre-oviposition period, fecundity and longevity of male and female was determined, and a fertility life table was prepared. Insects fed on MEcu 72 showed increased nymphal, egg-adult, and pre-oviposition periods and reduced female fecundity and longevity in comparison to the other genotypes. Demographic parameters (Ro, r m , T, DT) showed a significant impact on the growth potential of V. manihotae fed on MEcu 72 indicating that the populations would diminish over time. The combined effect of these parameters indicated that MEcu 72 has resistance on V. manihotae specimens hindering their development.

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Nymphstar: An accurate high‐throughput quantitative method for whitefly (Aleurotrachelus socialis Bondar) resistance phenotyping in cassava

Bohorquez‐Chaux,

Gómez‐Jiménez,

Leiva‐Sandoval

et al. 2023

The Plant Phenome Journal

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Whitefly (Aleurotrachelus socialis Bondar) is a major pest causing significant economic losses in cassava production systems in North South America. It diminishes cassava's photosynthesis by colonizing leaves, directly feeding on phloem sap, or excreting substances that foster sooty mold growth, reducing the photosynthetic area. The most effective pest management approach is deploying natural resistance in the crop. Identifying germplasm with superior whitefly‐resistance (WFR) through phenotypic evaluation distinguishing it from whitefly‐susceptible responses requires an accurate, high‐throughput, quantitative phenotyping method. We developed Nymphstar, an image‐based phenotyping tool, as an ImageJ plugin, quantifying third‐ and fourth‐instar nymphs and their leaf area they occupy through red, green, and blue color space analysis. Using Nymphstar, we tested 19 cassava genotypes and classified their resistance to A. socialis. The plugin proved efficient, completing the analysis in 25.56 min on average for the entire dataset. In contrast, manual counting for the same set of images took 425.23 min on average averaging around 6.29 min/image. Nymphstar was ∼17 times faster showcasing its efficiency. To assess WFR in cassava germplasm, we conducted a full‐bench caging free‐choice assay. This approach enhanced whitefly colonization on each cassava genotype, providing an accurate representation of resistance/susceptible while reducing operator bias. Nymphstar is a rapid, precise tool for automated nymphs counting and leaf area quantification. It facilitates the large‐scale assessment of cassava resistance to whitefly, eliminating bias associated with field assessment and manual counting.

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Resistance of cassava genotypes to Bemisia tuberculata

Cited by 9 publications

References 17 publications

Occurrence and distribution of lace bug, whitefly, and shoot fly pest species on cassava (Manihot esculenta) crops according to region in Paraná State, Brazil

Occurrence and distribution of lace bug, whitefly, and shoot fly pest species on cassava (Manihot esculenta) crops according to region in Paraná State, Brazil

Resistance of cassava genotypes to Vatiga manihotae (Drake 1922) (Hemiptera: Tingidae)

Nymphstar: An accurate high‐throughput quantitative method for whitefly (Aleurotrachelus socialis Bondar) resistance phenotyping in cassava

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