scholarly journals UVR8 Mediates UV-B-Induced Arabidopsis Defense Responses against Botrytis cinerea by Controlling Sinapate Accumulation

2012 ◽  
Vol 5 (3) ◽  
pp. 642-652 ◽  
Author(s):  
Patricia V. Demkura ◽  
Carlos L. Ballaré
Keyword(s):  
Botrytis Cinerea ◽  
Defense Responses ◽  
Arabidopsis Defense

scholarly journals THESEUS1 positively modulates plant defense responses against Botrytis cinerea through GUANINE EXCHANGE FACTOR4 signaling

2017 ◽  
Vol 59 (11) ◽  
pp. 797-804 ◽  
Author(s):  
Shaofeng Qu ◽  
Xi Zhang ◽  
Yutong Song ◽  
Jinxing Lin ◽  
Xiaoyi Shan
Keyword(s):  
Plant Defense ◽  
Botrytis Cinerea ◽  
Defense Responses ◽  
Plant Defense Responses

scholarly journals Polyamines Attenuate Ethylene-Mediated Defense Responses to Abrogate Resistance to Botrytis cinerea in Tomato

2011 ◽  
Vol 158 (2) ◽  
pp. 1034-1045 ◽  
Author(s):  
Savithri Nambeesan ◽  
Synan AbuQamar ◽  
Kristin Laluk ◽  
Autar K. Mattoo ◽  
Michael V. Mickelbart ◽  
...  
Keyword(s):  
Botrytis Cinerea ◽  
Defense Responses

scholarly journals Priming of Defense Systems and Upregulation of MYC2 and JAZ1 Genes after Botrytis cinerea Inoculation in Methyl Jasmonate-Treated Strawberry Fruits

Plants ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 447 ◽  
Author(s):  
Felipe Valenzuela-Riffo ◽  
Paz E. Zúñiga ◽  
Luis Morales-Quintana ◽  
Mauricio Lolas ◽  
Marcela Cáceres ◽  
...  
Keyword(s):  
Methyl Jasmonate ◽  
Botrytis Cinerea ◽  
Defense Responses ◽  
Gray Mold ◽  
The Past ◽  
Defense Systems ◽  
Meja Treatment ◽  
Fruit Development And Ripening ◽  
Genes Encoding ◽  
And Control

Several attempts have been made to study the effects of methyl jasmonate (MeJA) on plants in the past years. However, the comparative effects of the number and phenological time of MeJA applications on the activation of defense systems is currently unknown in strawberries. In the present research, we performed three field treatments during strawberry (Fragaria × ananassa ‘Camarosa’) fruit development and ripening which consisted of differential MeJA applications at flowering (M3), and the large green (M2 and M3) and red ripe (M1, M2, and M3) fruit stages. We also checked changes in gene expression related to plant defense against Botrytis cinerea inoculation post-harvest. In M3 treatment, we observed an upregulation of the anthocyanin and lignin contents and the defense-related genes, encoding for chitinases, β-1,3-glucanases and polygalacturonase-inhibiting proteins, after harvest (0 hpi), along with the jasmonate signaling-related genes FaMYC2 and FaJAZ1 at 48 h after B. cinerea inoculation (48 hpi) during postharvest storage. Although we did not find differences in gray mold incidence between the MeJA treatments and control, these results suggest that preharvest MeJA treatment from the flowering stage onwards (M3) primes defense responses mediated by the upregulation of different defense-related genes and retains the upregulation of MYC2 and JAZ1 at 48 hpi.

scholarly journals Arabidopsis Defense against Botrytis cinerea: Chronology and Regulation Deciphered by High-Resolution Temporal Transcriptomic Analysis

2012 ◽  
Vol 24 (9) ◽  
pp. 3530-3557 ◽  
Author(s):  
Oliver Windram ◽  
Priyadharshini Madhou ◽  
Stuart McHattie ◽  
Claire Hill ◽  
Richard Hickman ◽  
...  
Keyword(s):  
High Resolution ◽  
Botrytis Cinerea ◽  
Transcriptomic Analysis ◽  
Arabidopsis Defense

Defense responses in plants of Eucalyptus elicited by Streptomyces and challenged with Botrytis cinerea

Planta ◽  
2016 ◽  
Vol 243 (4) ◽  
pp. 1055-1070 ◽  
Author(s):  
Tamiris D. Salla ◽  
Leandro V. Astarita ◽  
Eliane R. Santarém
Keyword(s):  
Botrytis Cinerea ◽  
Defense Responses

scholarly journals Ultrastructural and Cytochemical Aspects of the Biological Control of Botrytis cinerea by Candida saitoana in Apple Fruit

1998 ◽  
Vol 88 (4) ◽  
pp. 282-291 ◽  
Author(s):  
Ahmed El-Ghaouth ◽  
Charles L. Wilson ◽  
Michael Wisniewski
Keyword(s):  
Host Cell ◽  
Botrytis Cinerea ◽  
Cell Walls ◽  
Close Contact ◽  
Defense Responses ◽  
Apple Fruit ◽  
Penicillium Expansum ◽  
Fungal Colonization ◽  
Biocontrol Activity ◽  
Apple Tissue

Biocontrol activity of Candida saitoana and its interaction with Botrytis cinerea in apple wounds were investigated. When cultured together, yeast attached to Botrytis sp. hyphal walls. In wounded apple tissue, C. saitoana restricted the proliferation of B. cinerea, multiplied, and suppressed disease caused by either B. cinerea or Penicillium expansum. In inoculated apple tissue without the yeast, fungal colonization caused an extensive degradation of host walls and altered cellulose labeling patterns. Hyphae in close proximity to the antagonistic yeast exhibited severe cytological injury, such as cell wall swelling and protoplasm degeneration. Colonization of the wound site by C. saitoana did not cause degradation of host cell walls. Host cell walls in close contact with C. saitoana cells and B. cinerea hyphae were well preserved and displayed an intense and regular cellulose labeling pattern. In addition to restricting fungal colonization, C. saitoana induced the formation of structural defense responses in apple tissue. The ability of C. saitoana to prevent the necrotrophic growth of the pathogen and stimulate structural defense responses may be the basis of its biocontrol activity.

scholarly journals Diversified Regulation of Cytokinin Levels and Signaling During Botrytis cinerea Infection in Arabidopsis

2021 ◽  
Vol 12 ◽  
Author(s):  
Beibei Li ◽  
Ruolin Wang ◽  
Shiya Wang ◽  
Jiang Zhang ◽  
Ling Chang
Keyword(s):  
Botrytis Cinerea ◽  
Response Regulator ◽  
Plant Immunity ◽  
Defense Responses ◽  
Cytokinin Oxidase ◽  
Plant Defense Responses ◽  
Necrotrophic Pathogen ◽  
Transcriptional Changes ◽  
Complex Regulation

Cytokinins (CKs) can modulate plant immunity to various pathogens, but how CKs are involved in plant defense responses to the necrotrophic pathogen Botrytis cinerea is still unknown. Here, we found that B. cinerea infection induced transcriptional changes in multiple genes involved in the biosynthesis, degradation, and signaling of CKs, as well as their contents, in pathogen-infected Arabidopsis leaves. Among the CKs, the gene expression of CYTOKININ OXIDASE/DEHYDROGENASE 5 (CKX5) was remarkably induced in the local infected leaves and the distant leaves of the same plant without pathogen inoculation. Cis-zeatin (cZ) and its riboside (cZR) accumulated considerably in infected leaves, suggesting an important role of the cis-zeatin type of CKs in the plant response to B. cinerea. Cytokinin double-receptor mutants were more susceptible to B. cinerea infection, whereas an exogenous CK treatment enhanced the expression levels of defense-related genes and of jasmonic acid (JA) and ethylene (ET), but not salicylic acid (SA), resulting in higher resistance of Arabidopsis to B. cinerea. Investigation of CK responses to B. cinerea infection in the JA biosynthesis mutant, jar1-1, and ET-insensitive mutant, ein2-1, showed that CK signaling and levels of CKs, namely, those of isopentenyladenine (iP), isopentenyladenine riboside (iPR), and trans-zeatin (tZ), were enhanced in jar1-1-infected leaves. By contrast, reductions in iP, iPR, tZ, and tZ riboside (tZR) as well as cZR contents occurred in ein2-1-infected leaves, whose transcript levels of CK signaling genes were likewise differentially regulated. The Arabidopsis Response Regulator 5 (ARR5) gene was upregulated in infected leaves of ein2-1 whereas another type-A response regulator, ARR16, was significantly downregulated, suggesting the existence of a complex regulation of CK signaling via the ET pathway. Accumulation of the cis-zeatin type of CKs in B. cinerea-infected leaves depended on ET but not JA pathways. Collectively, our findings provide evidence that CK responds to B. cinerea infection in a variety of ways that are differently modulated by JA and ET pathways in Arabidopsis.

scholarly journals Effect of Ethanol Vapor Treatment on the Growth of Alternaria alternata and Botrytis cinerea and Defense-Related Enzymes of Fungi-Inoculated Blueberry During Storage

2021 ◽  
Vol 12 ◽  
Author(s):  
Yaru Ji ◽  
Wenzhong Hu ◽  
Jia Liao ◽  
Zhilong Xiu ◽  
Aili Jiang ◽  
...  
Keyword(s):  
Botrytis Cinerea ◽  
Alternaria Alternata ◽  
Mycelial Growth ◽  
Ethanol Vapor ◽  
Defense Responses ◽  
Dependent Manner ◽  
Practical Application ◽  
Structure And Ultrastructure ◽  
Dose Dependent ◽  
Vapor Treatment

The aim of the present study was to investigate the effects of ethanol vapor on the inhibition of Alternaria alternata and Botrytis cinerea in postharvest blueberry and the induction of defense-related enzymes (DREs) activities in fungi-inoculated blueberries stored at 0±0.5°C for 16days. Results indicated that ethanol vapor markedly inhibited the mycelial growth of A. alternata and B. cinerea in a dose-dependent manner, with inhibition rates of 9.1% (250μlL−1), 36.4% (500μlL−1), and 5.5% (1,000μlL−1) on A. alternata and 14.2% (250μlL−1), 44.7% (500μlL−1), and 76.6% (1,000μlL−1) on B. cinerea, respectively. Meanwhile, ethanol vapor also enhanced the activities of DREs in fungi-inoculated blueberries, including β-1,3-glucanase (GLU), chitinase (CHI), phenylalnine ammonialyase (PAL), peroxidase (POD), and polyphenol oxidase (PPO). In particular, 500μlL−1 ethanol vapor increased the activities of DREs by 84.7% (GLU), 88.0% (CHI), 37.9% (PAL), 85.5% (POD), and 247.0% (PPO) in A. alternata-inoculated blueberries and 103.8% (GLU), 271.1% (CHI), 41.1% (PAL), 148.3% (POD), and 74.4% (PPO) in B. cinerea-inoculated blueberries, respectively. But, the activity of PPO was decreased by 55.2 and 31.9% in 500μlL−1 ethanol-treated blueberries inoculated with A. alternata and B. cinerea, respectively, after 8days of storage. Moreover, the surface structure and ultrastructure of 500μlL−1 ethanol-treated blueberry fruit cells were more integrated than those of other treatments. The findings of the present study suggest that ethanol could be used as an activator of defense responses in blueberry against Alternaria and Botrytis rots, by activating DREs, having practical application value in the preservation of postharvest fruit and vegetables.

scholarly journals Expression of Putative Defense Responses in Cannabis Primed by Pseudomonas and/or Bacillus Strains and Infected by Botrytis cinerea

2020 ◽  
Vol 11 ◽  
Author(s):  
Carole Balthazar ◽  
Gabrielle Cantin ◽  
Amy Novinscak ◽  
David L. Joly ◽  
Martin Filion
Keyword(s):  
Botrytis Cinerea ◽  
Cannabis Sativa ◽  
Molecular Level ◽  
Quantitative Polymerase Chain Reaction ◽  
Defense Responses ◽  
Gray Mold ◽  
Control Measures ◽  
Effective Control ◽  
Defense Genes ◽  
Polymerase Chain

Cannabis (Cannabis sativa L.) offers many industrial, agricultural, and medicinal applications, but is commonly threatened by the gray mold disease caused by the fungus Botrytis cinerea. With few effective control measures currently available, the use of beneficial rhizobacteria represents a promising biocontrol avenue for cannabis. To counter disease development, plants rely on a complex network of inducible defense pathways, allowing them to respond locally and systemically to pathogens attacks. In this study, we present the first attempt to control gray mold in cannabis using beneficial rhizobacteria, and the first investigation of cannabis defense responses at the molecular level. Four promising Pseudomonas (LBUM223 and WCS417r) and Bacillus strains (LBUM279 and LBUM979) were applied as single or combined root treatments to cannabis seedlings, which were subsequently infected by B. cinerea. Symptoms were recorded and the expression of eight putative defense genes was monitored in leaves by reverse transcription quantitative polymerase chain reaction. The rhizobacteria did not significantly control gray mold and all infected leaves were necrotic after a week, regardless of the treatment. Similarly, no systemic activation of putative cannabis defense genes was reported, neither triggered by the pathogen nor by the rhizobacteria. However, this work identified five putative defense genes (ERF1, HEL, PAL, PR1, and PR2) that were strongly and sustainably induced locally at B. cinerea’s infection sites, as well as two stably expressed reference genes (TIP41 and APT1) in cannabis. These markers will be useful in future researches exploring cannabis defense pathways.

Direct fungicidal activities of C6-aldehydes are important constituents for defense responses in Arabidopsis against Botrytis cinerea

2008 ◽  
Vol 69 (11) ◽  
pp. 2127-2132 ◽  
Author(s):  
Kyutaro Kishimoto ◽  
Kenji Matsui ◽  
Rika Ozawa ◽  
Junji Takabayashi
Keyword(s):  
Botrytis Cinerea ◽  
Defense Responses
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