The development and efficient utilization of molecular markers for the major quantitative trait locus of bacterial wilt resistance in potato

Habe, Ippei; Yu, Shuxun; Matsumoto, Kensuke

doi:10.1007/s10681-023-03187-0

Cited by 4 publications

(1 citation statement)

References 62 publications

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“…Dihaploid potato and S. phureja hybrids have demonstrated increased BW resistance [ 14 ]. A resistance allele was identified and an allele-specific molecular marker (Rbw6-1) for PBWR-6b was developed in the S. phureja [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Screening for Resistance Resources against Bacterial Wilt in Wild Potato

He,

Wang,

Huang

et al. 2024

Plants

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Potato is an important crop, used not only for food production but also for various industrial applications. With the introduction of the potato as a staple food strategy, the potato industry in China has grown rapidly. However, issues related to bacterial wilt, exacerbated by factors such as seed potato transportation and continuous cropping, have become increasingly severe in the primary potato cultivation regions of China, leading to significant economic losses. The extensive genetic diversity of Ralstonia solanacearum (R. solanacearum), which is the pathogen of bacterial wilt, has led to a lack of highly resistant potato genetic resources. There is a need to identify and cultivate potato varieties with enhanced resistance to reduce the adverse impact of this disease on the industry. We screened 55 accessions of nine different wild potato species against the bacterial wilt pathogen R. solanacearum PO2-1, which was isolated from native potato plants and belongs to phylotype II. Three accessions of two species (ACL24-2, PNT880-3, and PNT204-23) were identified with high resistance phenotypes to the tested strains. We found these accessions also showed high resistance to different phylotype strains. Among them, only PNT880-3 was capable of flowering and possessed viable pollen, and it was diploid. Consistent with the high resistance, decreased growth of R. solanacearum was detected in PNT880-3. All these findings in our study reveal that the wild potato PNT880-3 was a valuable resistance source to bacterial wilt with breeding potential.

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Section: Introductionmentioning

confidence: 99%

Screening for Resistance Resources against Bacterial Wilt in Wild Potato

He,

Wang,

Huang

et al. 2024

Plants

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The development and utilization of two SCAR markers linked to the resistance of banana (Musa spp. AAA) to Fusarium oxysporum f. sp. cubense race 4

Qv,

Feng,

Chen

et al. 2024

Euphytica

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Banana (Musa spp.) production worldwide is seriously threatened by Fusarium wilt caused by Fusarium oxysporum f. sp. cubense (Foc). The best way to control this disease is to grow resistant cultivars. However, it requires large-scale field evaluations and labor- and time-consuming to obtain disease-resistant germplasm. Development of early, reliable, and reproducible selection strategies are considered as the efficient approach which could speed up the selection procedure. In this study, two pairs of sequence-related amplified polymorphism (SRAP) primers related to banana Foc resistance/susceptibility were screened from 100 pairs of random primers. Correspondingly, two pairs of sequence characterized amplified region (SCAR) markers (namely SC4-F/SC4-R and SC14-F/SC14-R, respectively) were successfully generated from these two SRAP markers using 30 cultivars either resistant or susceptible to Foc. Both SCAR markers were located in mitochondrion genome and showed discriminatory power of 96.67% and 100%, respectively. Mitochondrial proteins possibly play a very important role in banana resistance to Foc. In additional, these two SCAR markers were employed simultaneously to screen potential resistant germplasm from 53 accessions with unknown resistance to Foc, and the results revealed a consistency of 83.0% with each other, further indicating their high reliability and reproducibility. These results suggest that both SCAR markers could be used in molecular marker-assisted selection for banana germplasm resistant to Fusarium.

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Breeding for resistance to bacterial wilt in Solanaceae crops: lessons learned and ways forward for Gboma eggplant (Solanum macrocarpon L.), a traditional African vegetable

Sossou,

Ayenan,

Schafleitner

et al. 2024

Euphytica

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Bacterial wilt (BW) is caused by Ralstonia solanacearum species complex (RSSC) and can lead to severe losses in a wide range of crops, including many traditional African vegetables (TAV). Given the critical role of TAV in African food security, investigations of BW incidence, distribution, and effective breeding strategies are needed to support public and private TAV breeding programs. In this review, we address key questions related to the diversity of BW pathogens, susceptible TAV hosts, distribution, incidence, breeding strategies, sources of resistance, and gaps in the development of resistant TAV varieties in Africa. We also discuss the potential of multiomics integration to enhance our understanding of the host plant defense system against BW in Solanaceae crops. We curated BW strain databases obtained from several online platforms, representing a total of 948 BW strains. Using a refined database, we highlighted the diversity of RSSC and TAV crops affected by RSSC in different regions of Africa. Out of 29 species documented to be affected by BW in Africa, ten are TAV, including widely consumed TAV such as Amaranths and nightshades. In addition, phylotypes I and III are reported to affect TAV, and the incidence can reach up to 72.4% in farmers’ fields. An overview of the first reports revealed that the disease has become a serious threat to TAV in the past decade. Finally, this review proposes a schematic map of possible avenues for successful breeding of BW-resistant TAV using Gboma eggplant as a case study.

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The development and efficient utilization of molecular markers for the major quantitative trait locus of bacterial wilt resistance in potato

Cited by 4 publications

References 62 publications

Screening for Resistance Resources against Bacterial Wilt in Wild Potato

Screening for Resistance Resources against Bacterial Wilt in Wild Potato

The development and utilization of two SCAR markers linked to the resistance of banana (Musa spp. AAA) to Fusarium oxysporum f. sp. cubense race 4

Breeding for resistance to bacterial wilt in Solanaceae crops: lessons learned and ways forward for Gboma eggplant (Solanum macrocarpon L.), a traditional African vegetable

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