Sitotroga cerealella-resistant mexican maize races (Zea mays L.), new sources of resistance for commercial maize breeding

Macías-Estrada, Paola; Orozco-González, Francisco; Castellanos-Pérez, Gloria; Castillo-Rosales, Adán; Ortega-Ortega, Adalberto; Malvar, R. A.; Padilla‐Chacón, Daniel; Galindo, José Cruz Jiménez

doi:10.1007/s42976-022-00302-0

Cited by 2 publications

(3 citation statements)

References 34 publications

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“…Arnason et al [10], Abebe et al [11], and Serratos et al [12] have identified some maize accessions with a high level of tolerance to S. zeamais. We have detected varieties with resistance to two storage pests, Sitotroga cerealella and S. zeamais, and Cristalino-079, in a previous study, had only 4.5% weight loss caused by S. cerealella [44]. Meanwhile, in the current study, we observed 4.2% weight loss in a nine-month period of obligate feeding and 8.5% weight loss in an eight-month period under free-choice conditions.…”

Section: Discussionsupporting

confidence: 46%

“…The differences in the percentage of weight loss could be due to pest diversity, exposure time, temperature, etc. Therefore, we trust that Cristalino-079 could be used in breeding programs for resistance to S. cerealaella and S. zeamais [44]. In addition, the Azul race can be used for maize genetic improvement since it presents a good level of resistance to S. zeamais.…”

Section: Discussionmentioning

confidence: 97%

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Identification of Resistance to the Corn Weevil (Sitophilus zeamais M.) in Mexican Maize Races (Zea mays L.)

et al. 2023

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Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) has a global distribution and is one of the most important post-harvest pests of maize (Zea mays L.). Some Mexican maize races could be a novel source of resistance against S. zeamais to improve commercial maize, generating lines, varieties, and hybrids with resistance to the pest. These are original races from the center of origin of maize and have been exposed to selection pressure from S. zeamais and other pests for thousands of years, which probably resulted in some type of resistance. We studied the resistance of Mexican maize races to S. zeamais focusing on antixenosis, antibiosis, and tolerance. Antibiosis reduces the survival and reproduction of the insect or prolongs the time between generations, whereas antixenosis reduces the rate of initial and successive accumulation of the insect population. Obligate-antibiosis and free-choice bioassays were performed, and in those experiments, resistance traits and the consumption by S. zeamais were measured. The most resistant accession showed high adult mortality and fewer adults in the 1st generation, where the number of emerged adults is an ideal trait to evaluate the level of maize resistance to the pest. Net consumption (in grams) is the most economically important trait because it indicates the gross amount lost in a store, while yield losses (percentage of consumption) allow for studying tolerance. The type of endosperm did have an influence on the resistance/tolerance to S. zeamais. The flint varieties showed significantly higher mortality of adults before entering the seed, a lower quantity of emerged adults of the first generation in the obligate-antibiosis bioassay, and lower net consumption and percentage in both bioassays. In general, the varieties of the races Cristalino de Chihuahua, Apachito, and Azul showed high levels of resistance, with the Cristalino-079 (flint) and Azul (floury) accessions also being tolerant, and low levels of consumption by S. zeamais. Both could be used in breeding programs to reduce losses caused by S. zeamais.

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Section: Discussionsupporting

confidence: 46%

Section: Discussionmentioning

confidence: 97%

Identification of Resistance to the Corn Weevil (Sitophilus zeamais M.) in Mexican Maize Races (Zea mays L.)

et al. 2023

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“…Sitotroga cerealella infests maize, wheat, and rice, resulting in substantial direct damage through larval feeding and increased susceptibility to secondary insect pests and fungi. 4 Sitotroga cerealella infestation during storage contributes to losses of up to 13% in grain weight and 76% in the number of damaged grains, 5 which pose significant economic challenges and threaten food security.…”

Section: Introductionmentioning

confidence: 99%

Microcapsules of mesoporous silica and cyclodextrin modified loaded with nonanal and decanal for effective control of Sitotroga cerealella in grain storage environments

Shah,

Zhang,

et al. 2024

Pest Management Science

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BACKGROUNDThe Angoumois grain moth, Sitotroga cerealella, is a destructive pest of maize, wheat, and rice, causing economic losses and threatening food security. This study aimed to develop and characterize microcapsules of mesoporous silica nanospheres (MSN) and cyclodextrin‐modified mesoporous silica nanospheres (CDMSN) containing two aldehydes, nonanal and decanal, found in plant essential oils, to assess their attractiveness to S. cerealella populations.RESULTSMicrocapsules with 2:1 ratio of nonanal and decanal exhibited an average encapsulation efficiency of 39.82% for MSN loaded with nonanal and decanal (MSN‐ND) and 46.10% for CDMSN loaded with nonanal and decanal (CDMSN‐ND). They have an elliptical shape with particle sizes of 115 nm for MSN and 175 nm for CDMSN. Gas chromatography–mass spectrometry analysis revealed in vitro release of nonanal in MSN at 96.24% and decanal at 96.42% by the 36th day. CDMSN showed releases of 93.83% for nonanal and 93.74% for decanal by the 50th day. CDMSN‐ND attracted adult S. cerealella for 43 days, while MSN‐ND remained effective for 29 days. In mass trapping assays in simulated grain warehouse, both MSN‐ND and CDMSN‐ND trapped over 50% of the adult population within 7 days, significantly reducing grain infestation rates below 10% by inhibiting F1 adult emergence. At temperatures ranging from 20 °C to 35 °C, both microcapsules exhibited significant and effective attraction rates for S. cerealella. Stored wheat seeds treated with CDMSN and CDMSN‐ND over 1 year showed no significant differences in key germination parameters.CONCLUSIONMicroencapsulated nonanal and decanal offer a promising, sustainable approach for controlling S. cerealella infestation in stored grains, contributing to global food security. © 2024 Society of Chemical Industry.

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Sitotroga cerealella-resistant mexican maize races (Zea mays L.), new sources of resistance for commercial maize breeding

Cited by 2 publications

References 34 publications

Identification of Resistance to the Corn Weevil (Sitophilus zeamais M.) in Mexican Maize Races (Zea mays L.)

Identification of Resistance to the Corn Weevil (Sitophilus zeamais M.) in Mexican Maize Races (Zea mays L.)

Microcapsules of mesoporous silica and cyclodextrin modified loaded with nonanal and decanal for effective control of Sitotroga cerealella in grain storage environments

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