Reduction of MLO1 expression in petunia increases resistance to powdery mildew

Jiang, Peng; Chen, Yihua; Wilde, H. Dayton

doi:10.1016/j.scienta.2016.02.007

Cited by 14 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been reported that Act was used as a reference gene in the study of cucumber, tomato, bitter gourd, wheat and rubber tree [46][47][48][49][50]. EF1α was used as a reference gene for eggplant and petunia [51,52]. Tubulin was used as a reference gene for studying the mulberry [53], and 28SrRNA was used as a reference gene for studying the oat [54].…”

Section: Discussionmentioning

confidence: 99%

Selection and Evaluation of Reference Genes for Quantitative Real-Time PCR in Tomato (Solanum lycopersicum L.) Inoculated with Oidium neolycopersici

et al. 2022

View full text Add to dashboard Cite

In order to screen out the most stable reference genes in tomatoes under powdery mildew (PM) stress and study the expression of related genes in the interaction between tomato and PM more accurately, this study will provide a calibration basis for the expression of related functional genes. In this study, the expression stabilities of eight tomato candidate reference genes of EF1α, L33, Act, Ubi, GAPDH, UK, CAC and TIP41 in susceptible tomato and resistant tomatoes under PM stress were ranked using four different computation programs, including geNorm, Normfinder, BestKeeper and the comparative ∆CT method. Then RefFinder was used to analyze the ranking results of four kinds of software comprehensively. Finally, the selected reference genes were validated by the target gene SlMLO1. The results of geNorm showed that the normalization of qRT-PCR using two reference genes could meet the requirements. The comprehensive analysis of RefFinder showed that the most stable reference genes were Act and EF1α for both tomato varieties. The combination of Act and GAPDH was most stable in susceptible tomato ‘MM’. The combination of Act and EF1α was most stable in resistant tomato ‘62579′. Generally, the Act was the most stable reference gene in the two tomato varieties under PM stress. This study will lay a foundation for the related functional gene expression research in tomatoes under PM stress.

show abstract

Section: Discussionmentioning

confidence: 99%

Selection and Evaluation of Reference Genes for Quantitative Real-Time PCR in Tomato (Solanum lycopersicum L.) Inoculated with Oidium neolycopersici

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Mildew locus O genes encode a plasma membrane protein with seven trans-membrane helices and a Cterminal calmodulin-binding domain acting as a prerequisite for successful colonization of PM pathogens in numerous crops [58][59][60][61]. Previously, PM susceptibility due to MLO gene families by facilitating fungal penetration phase into the host has been reported for PM pathogens in numerous crops including ornamentals like petunia and rose and when mutated deployed broadspectrum, durable resistance to PM in these crops [62,63]. In this study, we identified four MLO-like transcripts however, these transcripts were not differentially expressed.…”

Section: Discussionmentioning

confidence: 99%

Sequencing and analysis of gerbera daisy leaf transcriptomes reveal disease resistance and susceptibility genes differentially expressed and associated with powdery mildew resistance

et al. 2020

View full text Add to dashboard Cite

Background RNA sequencing has been widely used to profile genome-wide gene expression and identify candidate genes controlling disease resistance and other important traits in plants. Gerbera daisy is one of the most important flowers in the global floricultural trade, and powdery mildew (PM) is the most important disease of gerbera. Genetic improvement of gerbera PM resistance has become a crucial goal in gerbera breeding. A better understanding of the genetic control of gerbera resistance to PM can expedite the development of PM-resistant cultivars. Results The objectives of this study were to identify gerbera genotypes with contrasting phenotypes in PM resistance and sequence and analyze their leaf transcriptomes to identify disease resistance and susceptibility genes differentially expressed and associated with PM resistance. An additional objective was to identify SNPs and SSRs for use in future genetic studies. We identified two gerbera genotypes, UFGE 4033 and 06–245-03, that were resistant and susceptible to PM, respectively. De novo assembly of their leaf transcriptomes using four complementary pipelines resulted in 145,348 transcripts with a N50 of 1124 bp, of which 67,312 transcripts contained open reading frames and 48,268 were expressed in both genotypes. A total of 494 transcripts were likely involved in disease resistance, and 17 and 24 transcripts were up- and down-regulated, respectively, in UFGE 4033 compared to 06–245-03. These gerbera disease resistance transcripts were most similar to the NBS-LRR class of plant resistance genes conferring resistance to various pathogens in plants. Four disease susceptibility transcripts (MLO-like) were expressed only or highly expressed in 06–245-03, offering excellent candidate targets for gene editing for PM resistance in gerbera. A total of 449,897 SNPs and 19,393 SSRs were revealed in the gerbera transcriptomes, which can be a valuable resource for developing new molecular markers. Conclusion This study represents the first transcriptomic analysis of gerbera PM resistance, a highly important yet complex trait in a globally important floral crop. The differentially expressed disease resistance and susceptibility transcripts identified provide excellent targets for development of molecular markers and genetic maps, cloning of disease resistance genes, or targeted mutagenesis of disease susceptibility genes for PM resistance in gerbera.

show abstract

“…Recently, reduced levels of PhMLO1 expression achieved by introducing a PhMLO1 RNAi construct resulted in improved resistance to powdery mildew in petunias. However, PhMLO1 knockdown resulted in pleiotropic effects on petunia growth and development that may have a negative effect on the further development of strategies to create powdery mildew resistance by RNAi in petunias [ 117 ].…”

Section: Genetic Engineering For Improved Fungal Disease Resistance In Ornamental Plantsmentioning

confidence: 99%

Recent Progress in Enhancing Fungal Disease Resistance in Ornamental Plants

Mekapogu

Jung

Kwon

et al. 2021

IJMS

View full text Add to dashboard Cite

Fungal diseases pose a major threat to ornamental plants, with an increasing percentage of pathogen-driven host losses. In ornamental plants, management of the majority of fungal diseases primarily depends upon chemical control methods that are often non-specific. Host basal resistance, which is deficient in many ornamental plants, plays a key role in combating diseases. Despite their economic importance, conventional and molecular breeding approaches in ornamental plants to facilitate disease resistance are lagging, and this is predominantly due to their complex genomes, limited availability of gene pools, and degree of heterozygosity. Although genetic engineering in ornamental plants offers feasible methods to overcome the intrinsic barriers of classical breeding, achievements have mainly been reported only in regard to the modification of floral attributes in ornamentals. The unavailability of transformation protocols and candidate gene resources for several ornamental crops presents an obstacle for tackling the functional studies on disease resistance. Recently, multiomics technologies, in combination with genome editing tools, have provided shortcuts to examine the molecular and genetic regulatory mechanisms underlying fungal disease resistance, ultimately leading to the subsequent advances in the development of novel cultivars with desired fungal disease-resistant traits, in ornamental crops. Although fungal diseases constitute the majority of ornamental plant diseases, a comprehensive overview of this highly important fungal disease resistance seems to be insufficient in the field of ornamental horticulture. Hence, in this review, we highlight the representative mechanisms of the fungal infection-related resistance to pathogens in plants, with a focus on ornamental crops. Recent progress in molecular breeding, genetic engineering strategies, and RNAi technologies, such as HIGS and SIGS for the enhancement of fungal disease resistance in various important ornamental crops, is also described.

show abstract

Reduction of MLO1 expression in petunia increases resistance to powdery mildew

Cited by 14 publications

References 19 publications

Selection and Evaluation of Reference Genes for Quantitative Real-Time PCR in Tomato (Solanum lycopersicum L.) Inoculated with Oidium neolycopersici

Selection and Evaluation of Reference Genes for Quantitative Real-Time PCR in Tomato (Solanum lycopersicum L.) Inoculated with Oidium neolycopersici

Sequencing and analysis of gerbera daisy leaf transcriptomes reveal disease resistance and susceptibility genes differentially expressed and associated with powdery mildew resistance

Recent Progress in Enhancing Fungal Disease Resistance in Ornamental Plants

Contact Info

Product

Resources

About