<i>Alternaria</i> diseases on potato and tomato

Schmey, Tamara; Tominello‐Ramirez, Christopher S.; Brune, Carolin; Stam, Remco

doi:10.1111/mpp.13435

Cited by 17 publications

(2 citation statements)

References 220 publications

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“…However, plant pathogens, including the necrotroph Sclerotinia sclerotiorum or species from the genus Alternaria, commonly threaten tomato production worldwide [32][33][34][35]. Host resistance and fungicides are the standard tools to protect tomatoes against these pathogens.…”

Section: Wild Tomato Populations As a Reservoir Of Potential Qdr Loci...mentioning

confidence: 99%

High-resolution disease phenotyping reveals distinct resistance strategies of wild tomato crop wild relatives againstSclerotinia sclerotiorum

Einspanier,

Tominello-Ramirez,

Hasler

et al. 2024

Preprint

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Besides the well-understood qualitative disease resistance, plants possess a more complex quantitative form of resistance: quantitative disease resistance (QDR). QDR is commonly defined as a partial but more durable form of resistance and, therefore, might display a valuable target for resistance breeding. The characterization of QDR phenotypes, especially of wild crop relatives, displays a major bottleneck in deciphering QDR's genomic and regulatory background. Moreover, the relationship between QDR parameters, such as infection frequency, lag phase duration, and lesion growth rate, remains elusive. High hurdles for applying modern phenotyping technology, such as the low availability of phenotyping facilities or complex data analysis, further dampen progress in understanding QDR. Here, we applied a low-cost phenotyping system to measure lesion growth dynamics of wild tomato species (e.g.,S. pennelliiorS. pimpinellifolium). We provide insight into QDR diversity of wild populations and derive specific QDR strategies and their crosstalk. We show how temporally continuous observations are required to dissect end-point severity into functional resistance strategies. The results of our study show how QDR can be maintained by facilitating different defense strategies during host-parasite interaction and that the capacity of the QDR toolbox highly depends on the host's genetic context. We anticipate that the present findings display a valuable resource for more targeted functional characterization of the processes involved in QDR. Moreover, we show how modest phenotyping technology can be leveraged to help answer highly relevant biological questions.

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Section: Wild Tomato Populations As a Reservoir Of Potential Qdr Loci...mentioning

confidence: 99%

High-resolution disease phenotyping reveals distinct resistance strategies of wild tomato crop wild relatives againstSclerotinia sclerotiorum

Einspanier,

Tominello-Ramirez,

Hasler

et al. 2024

Preprint

Self Cite

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“…In particular regions and countries, such as Algeria and Romania, it is cultivated as the primary crop. Several diseases threaten this crop and, therefore, the food safety of a large proportion of the world population, for instance, early blight and brown spot (Alternaria solani, A. protenta, A. grandis, A. alternata, Plants 2024, 13, 1711 2 of 27 and many other Alternaria species [1], Fusarium wilt and Fusarium dry rot (Fusarium sp. ), Neocosmospora solani, [2], black scurf and rhizoctonia canker (Rhizoctonia solani), pink rot (Phytophthora erytroseptica), verticilium wilt (Verticilium dahliae), PVY (Potato virus Y), bacteria wilt (Ralstonia solanacearum), ring rot (Clavibacter michiganensis ssp.…”

Section: Introductionmentioning

confidence: 99%

Modern Breeding Strategies and Tools for Durable Late Blight Resistance in Potato

Berindean,

Taoutaou,

Rida

et al. 2024

Plants

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Cultivated potato (Solanum tuberosum) is a major crop worldwide. It occupies the second place after cereals (corn, rice, and wheat). This important crop is threatened by the Oomycete Phytophthora infestans, the agent of late blight disease. This pathogen was first encountered during the Irish famine during the 1840s and is a reemerging threat to potatoes. It is mainly controlled chemically by using fungicides, but due to health and environmental concerns, the best alternative is resistance. When there is no disease, no treatment is required. In this study, we present a summary of the ongoing efforts concerning resistance breeding of potato against this devastating pathogen, P. infestans. This work begins with the search for and selection of resistance genes, whether they are from within or from outside the species. The genetic methods developed to date for gene mining, such as effectoromics and GWAS, provide researchers with the ability to identify genes of interest more efficiently. Once identified, these genes are cloned using molecular markers (MAS or QRL) and can then be introduced into different cultivars using somatic hybridization or recombinant DNA technology. More innovative technologies have been developed lately, such as gene editing using the CRISPR system or gene silencing, by exploiting iRNA strategies that have emerged as promising tools for managing Phytophthora infestans, which can be employed. Also, gene pyramiding or gene stacking, which involves the accumulation of two or more R genes on the same individual plant, is an innovative method that has yielded many promising results. All these advances related to the development of molecular techniques for obtaining new potato cultivars resistant to P. infestans can contribute not only to reducing losses in agriculture but especially to ensuring food security and safety.

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Paenibacillus as a Biocontrol Agent for Fungal Phytopathogens: Is P. polymyxa the Only One Worth Attention?

Dobrzyński,

Naziębło

2024

Microb Ecol

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Control of fungal phytopathogens is a significant challenge in modern agriculture. The widespread use of chemical fungicides to control these pathogens often leads to environmental and food contamination. An eco-friendly alternative that can help reduce reliance on these chemicals is plant growth–promoting bacteria (PGPB), particularly those of the genus Paenibacillus, which appear to be highly effective. The review aims to summarize the existing knowledge on the potential of Paenibacillus spp. as fungal biocontrol agents, identify knowledge gaps, and answer whether other species of the genus Paenibacillus, in addition to Paenibacillus polymyxa, can also be effective biocontrol agents. Paenibacillus spp. can combat plant phytopathogens through various mechanisms, including the production of lipopeptides (such as fusaricidin, paenimyxin, and pelgipeptin), the induction of systemic resistance (ISR), hydrolytic enzymes (chitinase, cellulase, and glucanase), and volatile organic compounds. These properties enable Paenibacillus strains to suppress the growth of fungi such as Fusarium oxysporum, F. solani, Rhizoctonia solani, Botrytis cinerea, or Colletotrichum gloeosporioides. Notably, several strains of Paenibacillus, including P. polymyxa, P. illinoisensis KJA-424, P. lentimorbus B-30488, and P. elgii JCK1400, have demonstrated efficacy in controlling fungal diseases in plants. Importantly, many formulations with Paenibacillus strains have already been patented, and some are commercially available, but most of them contain only P. polymyxa. Nevertheless, considering the data presented in this review, we believe that other strains from the Paenibacillus genus (besides P. polymyxa) will also be commercialized and used in plant protection in the future. Importantly, there is still limited information regarding their impact on the native microbiota, particularly from the metataxonomic and metagenomic perspectives. Expanding knowledge in this area could enhance the effectiveness of biocontrol agents containing Paenibacillus spp., ensuring safe and sustainable use of biological fungicides.

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Alternaria diseases on potato and tomato

Cited by 17 publications

References 220 publications

High-resolution disease phenotyping reveals distinct resistance strategies of wild tomato crop wild relatives againstSclerotinia sclerotiorum

High-resolution disease phenotyping reveals distinct resistance strategies of wild tomato crop wild relatives againstSclerotinia sclerotiorum

Modern Breeding Strategies and Tools for Durable Late Blight Resistance in Potato

Paenibacillus as a Biocontrol Agent for Fungal Phytopathogens: Is P. polymyxa the Only One Worth Attention?

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