Insights into hydrogen sulfide defense against black rot of cabbage at morphological, cellular and transcriptional metabolic levels

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Black rot caused by Xanthomonas campestris pv. campestris (Xcc) has resulted in severe damage to cabbage yields worldwide. Hydrogen sulfide (H₂S), an important gaseous signaling molecule, is involved mediating plant defense responses various adversity stresses. However, few studies have investigated how H₂S enhances resistance mechanisms plants under biotic stress. Therefore, this experiment, we the effects of exogenous on extent plant-pathogen interactions, antioxidant mechanisms, pathogenesis, cellular integrity and accumulation secondary metabolite Xcc infested cabbage. Our study showed that inhibited properties metabolites synthesis cabbage, led significant disruption cell wall membrane integrity, which triggered diseases. The use effectively mitigated inhibitory effect damage, up-regulated expression levels genes stabilized osmoregulatory system, improved capacity, promoted GSH-ASA cycle, protected morbidity enhanced rate substance synthesis. Thus, could improve disease seedlings relieved negative Xcc.

Language: Английский

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Protective role of Mortierella alpina-derived lipids in resisting root rot in Panax ginseng

Rhizosphere, Journal Year: 2024, Volume and Issue: unknown, P. 100994 - 100994

Published: Nov. 1, 2024

Language: Английский

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Understanding Occurrence Regularity and Preventive Measure for Panax notoginseng Leaf Spot Disease in Forest Environments

Published: May 7, 2024

Panax notoginseng (Burk.) F. H. Chen, a valuable Chinese herb in Yunnan Province, is susceptible to leaf spot caused by Boeremia linicola. Nonetheless, effective control methods against P. are lacking. We surveyed understorey bases Lincang, Lancang, and Xundian, with incidence rate reaching 80% an average disease index of 25 severe cases. found that pathogenic bacteria overwinter infected leaves soil, conidia conidiophores serving as the primary infection source. The strain B. linicola LYB-2 showed best growth at 20°C pH 5.0. also screened agents using plate face-off culture methods. Tetramycin exhibited 38.56–74.67% inhibition EC50 0.60 mg/L. Copper abietate 3.10–34.76% 3,120.05 Trichoderma atroviride T. harzianum rates 52.48% 44.19%, respectively, while Bacillus subtilis reached 78.45%. Field tests demonstrated significant effects 20% copper abresinate, subtilis, virenceae BH-10 preparation, 0.3% tetramycin, achieving 82.57%, 72.56%, 71.3%, 70.2% inhibition, respectively. These findings support their eco-friendly use for preventing controlling forests; we provide vital scientific evidence prediction green strategies.

Language: Английский

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Exploring the Genetic Basis of Calonectria spp. Resistance in Eucalypts

Current Issues in Molecular Biology, Journal Year: 2024, Volume and Issue: 46(10), P. 10854 - 10879

Published: Sept. 27, 2024

Selecting high-quality varieties with disease resistance by artificial crossbreeding is the most fundamental way to address damage caused Calonectria spp. in eucalypt plantations. However, understanding mechanism of disease-resistant heterosis occurrence eucalypts crucial for successful crossbreeding. Two hybrids, susceptible EC333 (H1522 × unknown) and resistant EC338 (W1767 P9060), were screened through infection isolates, a pathogen that causes leaf blight. RNA-Seq was performed on hybrid, their parents. The gene differential expression analysis showed there 3912 differentially expressed genes between EC338, 1631 up-regulated 2281 down-regulated genes. trends sets P9060 similar. trend W1767 opposite EC338. similarity advantage stress E. pellita suggested significant differences likely relate resistance. A GSEA based GO annotations revealed carbohydrate binding pathway EC333. pathways KEGG sesquiterpenoid triterpenoid biosynthesis pathways. alternative splicing demonstrated an AS event occurred LOC104426602. According our SNP analysis, had 626 more high-impact mutation loci than male parent 396 female W1767; 259 downstream region while 3107 fewer Additionally, 9631 exon Modules found via WGCNA strongly oppositely correlated EC333, such as module MEsaddlebrown, associated blight present study provides detailed explanation genetic basis resistance, providing foundation exploring related this phenomenon.

Language: Английский

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Genome-wide characterization and expression analysis of WRKY transcription factors reveals biotic stress response potential mechanisms in Panax notoginseng

Physiological and Molecular Plant Pathology, Journal Year: 2024, Volume and Issue: 134, P. 102432 - 102432

Published: Oct. 5, 2024

Language: Английский

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Understanding the Pathogenesis, Biocontrol Mechanisms, and Factors Influencing Biocontrol Effectiveness for Soil-Borne Diseases in Panax Plants

Microorganisms, Journal Year: 2024, Volume and Issue: 12(11), P. 2278 - 2278

Published: Nov. 10, 2024

plants are known for their significant medicinal and economic value. Being perennial, they prone to soil-borne diseases during cultivation. However, there has been limited research on the pathogenesis of diversity pathogens. While biological control gained attention its efficacy environmental benefits, factors affecting efficiency still need thorough evaluation. This review summarizes influence biotic factors, such as pathogens hosts, occurrence pathogen diversity. Additionally, we synthesized bacterial, actinobacterial, fungal biocontrol functional mechanisms. Moreover, delves into influencing biocontrol, including microbial species, inoculation method volume, inoculant composition. article serves a valuable resource enhancing optimizing strategies managing in

Language: Английский

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Integrated metabolome and transcriptome analyses reveal the critical role of alpha-linolenic acid metabolism in Panax notoginseng root rot disease

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 222, P. 120072 - 120072

Published: Nov. 21, 2024

Language: Английский

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