BABA and Phytophthora nicotianae Induce Resistance to Phytophthora capsici in Chile Pepper (Capsicum annuum)

Stamler, Rio A.; Holguin, Omar; Dungan, Barry; Schaub, Tanner; Sanogo, Soum; Goldberg, N. P.; Randall, Jennifer J.

doi:10.1371/journal.pone.0128327

Cited by 14 publications

(11 citation statements)

References 28 publications

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“…In this study, P. riparia successfully primed C. annuum defense responses as was observed by the delay in lesion development upon infection by P. capsici. While all plants inoculated with P. capsici in this study did eventually develop root rot and stem lesions, the quantitative delay in symptom development is consistent with that previously described during priming with nonhost P. nicotianae or ␤-aminobutyric acid (BABA) (30). In previous work, BABA was shown to induce resistance in plants based on abscisic acid-dependent priming for callose deposition during necrotroph infection (34).…”

Section: Discussionsupporting

confidence: 89%

“…Induced, resistance to specific microbes and chemical elicitors is a well-characterized plant response, leading to augmented basal defenses (27)(28)(29)(30). Recent research in our lab characterized the induced resistance response in Capsicum annuum to nonhost P. nicotianae inoculation (30).…”

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confidence: 99%

“…Recent research in our lab characterized the induced resistance response in Capsicum annuum to nonhost P. nicotianae inoculation (30). Nonhost Phytophthora-inoculated C. annuum plants had significant changes in their primary metabolism and displayed an increased hypersensitive response during subsequent P. capsici infection.…”

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confidence: 99%

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Phytophthora Species in Rivers and Streams of the Southwestern United States

Stamler

Sanogo

Goldberg

et al. 2016

Appl Environ Microbiol

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Phytophthora species were isolated from rivers and streams in the southwestern United States by leaf baiting and identified by sequence analysis of internal transcribed spacer (ITS) ribosomal DNA (rDNA). The major waterways examined included the Rio Grande River, Gila River, Colorado River, and San Juan River. The most prevalent species identified in rivers and streams were Phytophthora lacustris and P. riparia, both members of Phytophthora ITS clade 6. P. gonapodyides, P. cinnamomi, and an uncharacterized Phytophthora species in clade 9 were also recovered. In addition, six isolates recovered from the Rio Grande River were shown to be hybrids of P. lacustris ؋ P. riparia. Pathogenicity assays using P. riparia and P. lacustris failed to produce any disease symptoms on commonly grown crops in the southwestern United States. Inoculation of Capsicum annuum with P. riparia was shown to inhibit disease symptom development when subsequently challenged with P. capsici, a pathogenic Phytophthora species. IMPORTANCEMany Phytophthora species are significant plant pathogens causing disease on a large variety of crops worldwide. Closer examinations of streams, rivers, and forest soils have also identified numerous Phytophthora species that do not appear to be phytopathogens and likely act as early saprophytes in aquatic and saturated environments. To date, the Phytophthora species composition in rivers and streams of the southwestern United States has not been evaluated. This article details a study to determine the identity and prevalence of Phytophthora species in rivers and streams located in New Mexico, Arizona, Colorado, Utah, and Texas. Isolated species were evaluated for pathogenicity on crop plants and for their potential to act as biological control agents.

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Section: Discussionsupporting

confidence: 89%

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confidence: 99%

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Phytophthora Species in Rivers and Streams of the Southwestern United States

Stamler

Sanogo

Goldberg

et al. 2016

Appl Environ Microbiol

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“…For instance, genes involved in carbohydrate metabolism such as sucrose synthase (Table S3 in File S4) play an active role in the defense response elicitation. Sucrose synthesis down-regulation has been described in the Capsicum annuum - Phytophthora nicotianae pathosystem, showing a decreasing concentration after challenging with beta-aminobutyric acid (BABA) and priming the synthesis of metabolites associated with the production of defense-related compounds ( Stamler et al 2015 ). Additionally, these results validate earlier QTL reports obtained from MSU-derived populations using potato varieties carrying different late blight resistance genes coming from species previously used in resistance breeding such as S. demissum and S. berthaultii ( Massa et al 2015 ; N. Manrique-Carpintero, personal communication).…”

Section: Discussionmentioning

confidence: 99%

Genomic Selection for Late Blight and Common Scab Resistance in Tetraploid Potato (Solanum tuberosum)

Enciso-Rodríguez¹,

Douches²,

Lopez‐Cruz³

et al. 2018

G3 Genes|Genomes|Genetics

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Potato (Solanum tuberosum) is a staple food crop and is considered one of the main sources of carbohydrates worldwide. Late blight (Phytophthora infestans) and common scab (Streptomyces scabies) are two of the primary production constraints faced by potato farming. Previous studies have identified a few resistance genes for both late blight and common scab; however, these genes explain only a limited fraction of the heritability of these diseases. Genomic selection has been demonstrated to be an effective methodology for breeding value prediction in many major crops (e.g., maize and wheat). However, the technology has received little attention in potato breeding. We present the first genomic selection study involving late blight and common scab in tetraploid potato. Our data involves 4,110 (Single Nucleotide Polymorphisms, SNPs) and phenotypic field evaluations for late blight (n=1,763) and common scab (n=3,885) collected in seven and nine years, respectively. We report moderately high genomic heritability estimates (0.46 ± 0.04 and 0.45 ± 0.017, for late blight and common scab, respectively). The extent of genotype-by-year interaction was high for late blight and low for common scab. Our assessment of prediction accuracy demonstrates the applicability of genomic prediction for tetraploid potato breeding. For both traits, we found that more than 90% of the genetic variance could be captured with an additive model. For common scab, the highest prediction accuracy was achieved using an additive model. For late blight, small but statistically significant gains in prediction accuracy were achieved using a model that accounted for both additive and dominance effects. Using whole-genome regression models we identified SNPs located in previously reported hotspots regions for late blight, on genes associated with systemic disease resistance responses, and a new locus located in a WRKY transcription factor for common scab.

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“…These elicitors influenced the plant by reducing plant cellular sucrose concentration as well as tricarboxylic acid cycle intermediates. It also boosted the concentration of hexose phosphate, hexose disaccharides, amino acids, and galactose in the induced plant, thereby building the plant immunity against Phytophthora capsici (Stamler et al 2015 ).…”

Section: Elicitors In the Induction Of Systemic Resistance To Biotic mentioning

confidence: 99%

The impact of microbes in the orchestration of plants’ resistance to biotic stress: a disease management approach

Enebe

Babalola

2018

Appl Microbiol Biotechnol

128

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The struggle for survival is a natural and a continuous process. Microbes are struggling to survive by depending on plants for their nutrition while plants on the other hand are resisting the attack of microbes in order to survive. This interaction is a tug of war and the knowledge of microbe-plant relationship will enable farmers/agriculturists improve crop health, yield, sustain regular food supply, and minimize the use of agrochemicals such as fungicides and pesticides in the fight against plant pathogens. Although, these chemicals are capable of inhibiting pathogens, they also constitute an environmental hazard. However, certain microbes known as plant growth-promoting microbes (PGPM) aid in the sensitization and priming of the plant immune defense arsenal for it to conquer invading pathogens. PGPM perform this function by the production of elicitors such as volatile organic compounds, antimicrobials, and/or through competition. These elicitors are capable of inducing the expression of pathogenesis-related genes in plants through induced systemic resistance or acquired systemic resistance channels. This review discusses the current findings on the influence and participation of microbes in plants’ resistance to biotic stress and to suggest integrative approach as a better practice in disease management and control for the achievement of sustainable environment, agriculture, and increasing food production.

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BABA and Phytophthora nicotianae Induce Resistance to Phytophthora capsici in Chile Pepper (Capsicum annuum)

Cited by 14 publications

References 28 publications

Phytophthora Species in Rivers and Streams of the Southwestern United States

Phytophthora Species in Rivers and Streams of the Southwestern United States

Genomic Selection for Late Blight and Common Scab Resistance in Tetraploid Potato (Solanum tuberosum)

The impact of microbes in the orchestration of plants’ resistance to biotic stress: a disease management approach

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