Novel trends in crop bioprotection

Michalak, Izabela; Aliman, J.; Hadžiabulić, Alisa; Komlen, Vedrana

doi:10.1016/b978-0-12-817036-6.00006-6

Cited by 2 publications

(2 citation statements)

References 143 publications

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“…Over the past few decades, the mechanisms of biocontrol of antagonistic yeasts, such as competition for nutrition and space, mycoparasitism and induction of host resistance, have been thoroughly studied. In addition, a combination of antagonistic yeast with other agents or treatments has been developed to increase the effectiveness of biocontrol [7][8][9]. In Germany, researchers offer live cultures as biocontrol agents [10].…”

Section: результаты и обсуждениеmentioning

confidence: 99%

“…За последние несколько десятилетий были тщательно изучены механизмы биоконтроля культур дрожжейантагонистов, такие как конкуренция за питание и пространство, микопаразитизм и индукция устойчивости хозяина. Кроме того, для повышения эффективности биоконтроля была разработана комбинация антагонистических дрожжей с другими агентами или обработками [7][8][9].…”

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Evaluation of the Inhibitory Activity of Collection Yeast Cultures Against the Causative Agent of Bacterial Burn Erwinia Amylovora

Джакибаева¹,

САДАНОВ²,

Takeshevna³

et al. 2023

Микробиология Және Вирусология

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В статье представлены результаты скрининга коллекционных культур дрожжей на антагонистическую активность против возбудителя бактериального ожога Erwinia amylovora. Из 36 исследованных штаммов дрожжей 4 культуры обладали ингибирующей активностью. К ним относятся: Torulopsis kefir var kumis №114 3, Kluyveromyces marxianus19, Torulopsis sphaerica№117, Saccharomyces cerevisiae (vini) 2 комплекс №20. Зоны подавления роста патогена у них составляли 22, 23,5, 22,5 и 26 мм, соответственно. Наибольшая антагонистическая активность была у штамма дрожжей Saccharomyces cerevisiae (vini) 2 комплекс №20. Анализ компонентного состава 4 дрожжевых культур (Torulopsis kefyr var.kumis №114 3, Kluyveromyces marxianus19, Torulopsis sphaerica№117, Saccharomyces cerevisiae (vini) 2 комплекс №20) показал, что у культур Saccharomyces cerevisiae (vini) 2 комплекс №20 и Torulopsis sphaerica№117 выявлено 13 химических соединений, из которых основное соединение - фенилэтиловый спирт. Его процентное содержание составляет 43,1%. У культуры Torulopsis kefyr var.kumis №114 3 обнаружено 12 химических веществ, из которых основное соединение - изоамиловый спирт - 15,7%. А у культуры Kluyveromyces marxianus 19 10 соединений, основное из которых этилацетат – 12,24%. Полученные данные свидетельствуют о том, что исследованные дрожжевые культуры представляют интерес для дальнейшего изучения их как агентов биоконтроля возбудителя бактериального ожога E. аmylovorа. The article presents the results of screening of collection yeast cultures for antagonistic activity against the causative agent of bacterial burn Erwinia amylovora. Of the 36 yeast strains studied, only 4 cultures had inhibitory activity. These are Torulopsis kefir var kumis №114 3, Kluyveromyces marxianus 19, Torulopsis sphaerica№117, Saccharomyces cerevisiae (vini)2 complex №20. Their pathogen growth suppression zones were (22, 23.5, 22.5 and 26 mm), respectively. The greatest antagonistic activity was in the yeast strain Saccharomyces cerevisiae (vini)2 complex №20. The analysis of the component composition of 4 yeast cultures (Torulopsis kefyr var.kumis №114 3, Kluyveromyces marxianus 19, Torulopsis sphaerica №117, Saccharomyces cerevisiae (vini) 2 complex №20) showed that 13 chemical compounds were detected in cultures of Saccharomyces cerevisiae (vini) 2 complex №20 and Torulopsis sphaerica №117, of which the main compound is Phenylethyl alcohol. Their percentage is 43.1%, respectively. The culture of Torulopsis kefyr var.kumis №114 has 12 chemical compounds, of which the main compound is 1-Butanol, 3-methyl - 15.7%.And the Kluyveromyces marxianus culture has 19 10 compounds, the main compound Ethyl Acetate is 12.24%. The data obtained indicate that the studied yeast cultures are of interest for further study of them as agents of biocontrol against the causative agent of bacterial burn E. amylovora.

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Section: результаты и обсуждениеmentioning

confidence: 99%

unclassified

Evaluation of the Inhibitory Activity of Collection Yeast Cultures Against the Causative Agent of Bacterial Burn Erwinia Amylovora

Джакибаева¹,

САДАНОВ²,

Takeshevna³

et al. 2023

Микробиология Және Вирусология

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Modules in robust but low-efficiency phyllosphere fungal networks drive saponin accumulation in leaves of different Panax species

Zhang

Shi

Liu³

et al. 2023

Environmental Microbiome

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Background The phyllosphere mycobiome plays a crucial role in plant fitness and ecosystem functions. The complex microbial ecological networks (MEN) formed by these fungi remain poorly understood, particularly with regard to their organization strategy and their contributions to plant secondary metabolites such as saponin. Results In this study, we constructed six MENs from leaf epiphytic and endophytic mycobiomes of three Panax species distributed in the northeast and southwest ends of mainland China. Hub nodes were absent in these MENs, which were significantly more complex, robust, and less efficient compared to random graphs (P < 0.05), indicating a hub-independent high-robustness strategy to maintain structural homeostasis. The important roles of specific MEN modules in shaping leaf saponin profiles of each Panax species were proved by multiple machine learning algorithms. Positive regulation modules (PRMs) of total saponin content were further identified, which exhibited more deterministic ecological assembly and comprised of highly connected nodes as well as higher proportion of plant-associated fungal guilds compared to other network members, indicating their tight links with host plant. The significant and direct effects (P < 0.05) of PRMs on total saponin accumulation were validated by well-fitted structural equation models (χ2 < 0.3, P > 0.5). Taxonomic analysis revealed that Pleosporales and Chaetothyriales were significantly overrepresented by positive regulation taxa (PRT) of total saponin content (FDR < 0.05). Across PRT identified in three Panax species, Epicoccum and Coniothyrium were conservatively present, while species-specific taxa such as Agaricales were also found, indicating the conservatism and specificity of plant-fungi interactions associated with leaf saponin accumulation in Panax genus. Conclusions These findings provide a foundation for understanding mechanisms maintaining the steady state of phyllosphere mycobiome in healthy plant, and offer clues for engineering phyllosphere mycobiome to improve the accumulation of bioactive secondary metabolites on the basis of network modules.

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Novel trends in crop bioprotection

Cited by 2 publications

References 143 publications

Evaluation of the Inhibitory Activity of Collection Yeast Cultures Against the Causative Agent of Bacterial Burn Erwinia Amylovora

Evaluation of the Inhibitory Activity of Collection Yeast Cultures Against the Causative Agent of Bacterial Burn Erwinia Amylovora

Modules in robust but low-efficiency phyllosphere fungal networks drive saponin accumulation in leaves of different Panax species

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