Tomato (Solanum lycopersicum L.) Breeding Strategies for Biotic and Abiotic Stresses

Rezk, Adel A.; Abhary, Mohammad; Akhkha, Abdullah

doi:10.1007/978-3-030-66961-4_10

Cited by 4 publications

(4 citation statements)

References 157 publications

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“…These genes were introgressed into tomato cultivars from the wild tomato species S. hirsutum and S. peruvianum [78,85]. Among these, Tm-2 2 confers resistance to all the most common ToMV strains (0, 1, and 2), except for the 2 2 strain (not very common in crops) [82,83]; thus, Tm-2 2 gene is widely deployed in most breeding programs [86].…”

Section: Tomvmentioning

confidence: 99%

Diagnosis and Characterization of Plant Viruses Using HTS to Support Virus Management and Tomato Breeding

González-Pérez,

Chiquito-Almanza,

Villalobos-Reyes

et al. 2024

Viruses

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Viral diseases pose a significant threat to tomato crops (Solanum lycopersicum L.), one of the world’s most economically important vegetable crops. The limited genetic diversity of cultivated tomatoes contributes to their high susceptibility to viral infections. To address this challenge, tomato breeding programs must harness the genetic resources found in native populations and wild relatives. Breeding efforts may aim to develop broad-spectrum resistance against the virome. To identify the viruses naturally infecting 19 advanced lines, derived from native tomatoes, high-throughput sequencing (HTS) of small RNAs and confirmation with PCR and RT-PCR were used. Single and mixed infections with tomato mosaic virus (ToMV), tomato golden mosaic virus (ToGMoV), and pepper huasteco yellow vein virus (PHYVV) were detected. The complete consensus genomes of three variants of Mexican ToMV isolates were reconstructed, potentially forming a new ToMV clade with a distinct 3’ UTR. The absence of reported mutations associated with resistance-breaking to ToMV suggests that the Tm-1, Tm-2, and Tm-22 genes could theoretically be used to confer resistance. However, the high mutation rates and a 63 nucleotide insertion in the 3’ UTR, as well as amino acid mutations in the ORFs encoding 126 KDa, 183 KDa, and MP of Mexican ToMV isolates, suggest that it is necessary to evaluate the capacity of these variants to overcome Tm-1, Tm-2, and Tm-22 resistance genes. This evaluation, along with the characterization of advanced lines using molecular markers linked to these resistant genes, will be addressed in future studies as part of the breeding strategy. This study emphasizes the importance of using HTS for accurate identification and characterization of plant viruses that naturally infect tomato germplasm based on the consensus genome sequences. This study provides crucial insights to select appropriate disease management strategies and resistance genes and guide breeding efforts toward the development of virus-resistant tomato varieties.

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Section: Tomvmentioning

confidence: 99%

Diagnosis and Characterization of Plant Viruses Using HTS to Support Virus Management and Tomato Breeding

González-Pérez,

Chiquito-Almanza,

Villalobos-Reyes

et al. 2024

Viruses

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“…The most cost-effective and environmentally friendly way to eradicate RKNs is to plant resistant cultivars ( Ayala-Doñas et al., 2020 ). Meloidogyne species resistance is conferred by at least ten plant-resistance genes (Mi-1, Mi-2, Mi-3, Mi-4, Mi-5, Mi-6, Mi-7, Mi-8, Mi-9, and Mi-HT) ( Rezk et al., 2021 ). Only five of them (Mi-1, Mi-3, Mi-5, Mi-9, and Mi-HT) have now had their genes mapped ( El-Sappah et al., 2019 ).…”

Section: Integrated Disease Management Strategiesmentioning

confidence: 99%

Meloidogyne enterolobii risk to agriculture, its present status and future prospective for management

Sikandar

Jia

et al. 2023

Front. Plant Sci.

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Meloidogyne enterolobii, commonly known as guava root-knot nematode, poses risk due to its widespread distribution and extensive host range. This species is recognized as the most virulent root-knot nematode (RKN) species because it can emerge and breed in plants that have resistance to other tropical RKNs. They cause chlorosis, stunting, and yield reductions in host plants by producing many root galls. It is extremely challenging for farmers to diagnose due to the symptoms’ resemblance to nutritional inadequacies. This pathogen has recently been considered a significant worldwide threat to agricultural production. It is particularly challenging to diagnose a M. enterolobii due to the similarities between this species and other RKN species. Identified using traditional morphological and molecular techniques, which is a crucial first in integrated management. Chemical control, biological control, the adoption of resistant cultivars, and cultural control have all been developed and effectively utilized to combat root-knot nematodes in the past. The object of this study was to get about the geographical distribution, host plants, symptoms, identification, and control techniques of M. enterolobii and recommend future initiatives to progress its management.

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“…Tomato ( Solanum lycopersicum L.) is considered a model plant because of its well‐studied genome and growth habits [Rezk et al, 2021]. Previous studies have shown that exposing tomato seeds to different levels of MFs resulted in enhanced germination rates and elevated fruit yield [De Souza et al, 2006; Martínez et al, 2009; Jedlička et al, 2015; Anand et al, 2019].…”

Section: Introductionmentioning

confidence: 99%

Effects of neodymium magneto‐priming on seed germination and salinity tolerance in tomato

Abhary

Akhkha

2023

Bioelectromagnetics

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Earth's biosphere is surrounded by magnetic fields that affect all living organisms. A plant's response to magnetic fields is displayed in terms of its seed's vigor, growth, and yield. Examining seed germination in such magnetic fields is the first step in the investigation of how magnetic fields might be used to enhance plant growth and maximize crop performance. In this study, salinity-sensitive Super Strain-B tomato seeds were primed with the northern and southern poles of neodymium magnets of 150, 200, and 250 mT. The magneto-primed seeds showed a significant increase in germination rate and speed, where the orientation of the magnet was identified as being crucial for germination rate and the orientation of seeds towards the magnet was shown to affect the germination speed. The primed plants exhibited enhanced growth characteristics, including longer shoots and roots, larger leaf area, more root hairs, higher water content, and more tolerance to salinity levels, up to 200 mM NaCl. All magneto-primed plants showed a significant decrease in chlorophyll content, continuous chlorophyll fluorescence yield (Ft), and quantum yield (QY). The salinity treatments decreased all chlorophyll parameters in control plants, significantly, but did not lower such parameters in magneto-primed tomatoes. The results of this study illustrate the positive effects of neodymium magnet on the growth and development of tomato plants in terms of their germination, growth, and salinity tolerance, and negatively affected the chlorophyll content in tomato leaves. Bioelectromagnetics. 44:47-56, 2023.

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Tomato (Solanum lycopersicum L.) Breeding Strategies for Biotic and Abiotic Stresses

Cited by 4 publications

References 157 publications

Diagnosis and Characterization of Plant Viruses Using HTS to Support Virus Management and Tomato Breeding

Diagnosis and Characterization of Plant Viruses Using HTS to Support Virus Management and Tomato Breeding

Meloidogyne enterolobii risk to agriculture, its present status and future prospective for management

Effects of neodymium magneto‐priming on seed germination and salinity tolerance in tomato

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