Endophytic fungal community succession in reproductive organs of two olive tree cultivars with contrasting anthracnose susceptibilities

AbstractFungal endophytes have been increasingly recognized to promote host plant protection to pathogens, but knowledge of the multiple effects that they could have in crop diseases is still scarce. This work attempts to understand the role of fungal endophytes in crop diseases, specifically in reducing disease development and interfering on lifestyle transition of the pathogen. To accomplish this, the endophytic fungal community of reproductive organs of olive tree from two orchards showing different levels of anthracnose incidence, a major disease of olive fruits, was characterized and compared between them. The two orchards showed distinct endophytic communities, differing in species richness, abundance and composition, with highest isolation rates and richness of endophytes in the orchard with low anthracnose incidence. These differences among orchards were greater on fruits than on flowers, suggesting that these changes in endophytic fungal composition may influence the lifestyle shifts in pathogen (from latent to pathogen). A number of fungal taxa were found to be positively associated to one of the two orchards. The fungal endophytes best correlated with high incidence of anthracnose are pathogens, while endophytes-associated to low anthracnose incidence are described to protect plants. Altogether, the results suggest varying pathogen–endophyte interactions among the two orchards.

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Fungal community succession contributes to product maturity during the co-composting of chicken manure and crop residues

Bioresource Technology ◽

10.1016/j.biortech.2021.124845 ◽

2021 ◽

Vol 328 ◽

pp. 124845

Author(s):

Guixian Xie ◽

Xiaoliang Kong ◽

Jialu Kang ◽

Ning Su ◽

Jiangchi Fei ◽

...

Keyword(s):

Fungal Community ◽

Crop Residues ◽

Chicken Manure ◽

Community Succession

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Pichia kudriavzevii retards fungal decay by influencing the fungal community succession during cherry tomato fruit storage

Food Microbiology ◽

10.1016/j.fm.2019.103404 ◽

2020 ◽

Vol 88 ◽

pp. 103404 ◽

Cited By ~ 5

Author(s):

Xia Liu ◽

Yu Gao ◽

Hongyuan Yang ◽

Limei Li ◽

Yishan Jiang ◽

...

Keyword(s):

Fungal Community ◽

Tomato Fruit ◽

Community Succession ◽

Cherry Tomato ◽

Fungal Decay ◽

Fruit Storage ◽

Pichia Kudriavzevii

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Assessing the Performance and the Microbial Dynamics of Co-composting System Using Recycled Cow Manure and Bedding Material Waste

10.21203/rs.3.rs-234233/v1 ◽

2021 ◽

Author(s):

Haiyan Duan ◽

Minghua Ji ◽

Ai Chen ◽

Shiqiu Xie ◽

Junsong Sun ◽

...

Keyword(s):

Microbial Community ◽

Fungal Community ◽

Plant Pathogens ◽

High Throughput Sequencing ◽

Agricultural Wastes ◽

Community Diversity ◽

Bedding Material ◽

Cow Manure ◽

Community Succession ◽

Composting Systems

Abstract Co-composting of recycled cow manure and waste bedding material has been used to convert both agricultural wastes to biofertilizers. This study explored the succession of microbial community, metabolic function and substances conversion capacities during 60 days’ co-composting using high throughput sequencing technology. The study revealed that co-composting of cow manure and bedding material waste at a ratio of 1.32 (CM+B) had the highest efficiency among four treatments. The bacterial and fungal community diversity changed significantly during the co-composting of CM+B group, and the major phyla included Firmicutes, Proteobacteria, Bacteroidetes, Actinobacteria and Ascomycota. PICRUSt and FUNGuild analysis showed that carbohydrate, lipid metabolism and especially nitrogen fixation were enhanced in the thermophilic phase, while animal and plant pathogens were not detected after the co-composting. Wood saprotrophs became the dominant fungal group (89.1%) in the maturation phase. Canonical correlation analysis (CCA) and redundancy analysis (RDA) confirmed that temperature influenced bacterial community succession more than it influenced fungal community succession. Ruminiclostridium had a significantly positive relationship with temperature (p_value < 0.05), while pH and C/N had significant effect on the fungal (p_value < 0.05), and Penicillium and Mortierella were significantly related to moisture (p_value < 0.05). This work describes an efficient methodology to deal with co-composting systems that had been successfully applied in agricultural wastes treatment, enabling further understanding in mechanisms underlying the substance conversion and the involved microbial community succession in sophisticated composting system.

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