Article
Horticulture
Mei Wang, Li Xiang, Weixiao Tang, Xuesen Chen, Chuanrong Li, Chengmiao Yin, Zhiquan Mao
Summary: Providing nitrogen is crucial for increasing production in modern agricultural systems, and a study found that ammonium bicarbonate can inhibit the growth of soilborne pathogens and promote the growth of replanted apple. Additionally, ammonium bicarbonate can improve soil enzyme activity and microbial biomass, helping to alleviate apple replant disease.
SCIENTIA HORTICULTURAE
(2024)
Article
Microbiology
Nivethika Ajeethan, Shawkat Ali, Keith D. D. Fuller, Lord Abbey, Svetlana N. N. Yurgel
Summary: The apple sector dominates the tree fruit industry in Nova Scotia, Canada. However, it faces challenges such as apple replant disease (ARD). This study used amplicon sequencing to compare the microbiomes of cultivated apple orchard soil, uncultivated soil, and apple roots. The results showed significant differences in microbial community between cultivated and uncultivated soil, with an increase in potential pathogens in the orchard soil. On the other hand, certain beneficial microorganisms and non-fungal eukaryotes were more abundant in the orchard soil, and potential plant-growth-promoting (PGP) bacteria were found in apple roots.
Article
Plant Sciences
Weitao Jiang, Ran Chen, Lei Zhao, Yanan Duan, Haiyan Wang, Zhubing Yan, Xiang Shen, Xuesen Chen, Chengmiao Yin, Zhiquan Mao
Summary: We isolated and identified a bacterium, Ochrobactrum haematophilum, from the rhizosphere soil of healthy replanted apple that produces IAA and degrades phloridzin. This bacterium can promote apple growth and degrade phenolic acids, providing a potential solution for the reduction of apple replant disease (ARD).
HORTICULTURAL PLANT JOURNAL
(2023)
Review
Microbiology
Tracey S. Somera, Mark Mazzola
Summary: Replant diseases are common in perennial cropping systems, and apple replant disease is mainly caused by changes in the soil microbiome and the increase of soilborne plant pathogens. Resource-based strategies can alter the soil microbiome, limit pathogen activity, and improve productivity in newly established orchards. Understanding the factors promoting the assembly of a disease-suppressive soil microbiome and the tolerance and resistance mechanisms of the host is crucial for a holistic view of orchard ecosystem dynamics.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Weitao Jiang, Ran Chen, Lei Zhao, Lei Qin, Hai Fan, Xuesen Chen, Yanfang Wang, Chengmiao Yin, Zhiquan Mao
Summary: This study investigated the effects of different chemical fumigants on Fusarium and phenolic acids in apple replant soil. The results showed that the chemical fumigants disrupted the soil microbial community to varying degrees, and the content of Fusarium and the number of soil microbial taxa were significantly affected. Greater disturbance resulted in a slower recovery rate of the soil microbial community, promoting the transformation of the soil into a disease-suppressing state.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Plant Sciences
Y. N. Duan, W. T. Jiang, R. Zhang, R. Chen, X. S. Chen, C. M. Yin, Z. Q. Mao
Summary: This study revealed that F. proliferatum is the main pathogenic fungus causing ARD in China, which is of great significance for controlling ARD.
Article
Microbiology
Weixiao Tang, Gongshuai Wang, Ran Chen, Xin Liu, Xuesen Chen, Xiang Shen, Chengmiao Yin, Zhiquan Mao
Summary: The mixed cropping of apple trees with Allium fistulosum L. was found to decrease the contamination of replanted soil by Fusarium solani and promote the growth of grafted apple seedlings.
Article
Horticulture
Zhenquan Fan, Qun Xia, Zhiqiang Zhao, Yanan Duan, Lei Zhao, Haiyan Wang, Weitao Jiang, Xuesen Chen, Chengmiao Yin, Zhiquan Mao
Summary: XERF-1, an endophytic fungus isolated from healthy roots of apple trees, showed strong competitive antagonism against ARD-related pathogenic Fusarium species. Treatment with XERF-1 fertilizer significantly improved the growth of Malus hupehensis Rehd. seedlings and reduced the abundance of harmful Fusarium species in the soil.
SCIENTIA HORTICULTURAE
(2022)
Article
Plant Sciences
Y. N. Duan, S. R. Ma, X. S. Chen, X. Shen, C. M. Yin, Z. Q. Mao
Summary: Apple replant disease (ARD) caused by Fusarium proliferatum f. sp. malus domestica (Fpmd) MR5 is a fungal pathogen that leads to annual losses in apple production in China. In this study, the whole-genome sequence of the highly virulent Fpmd MR5 was obtained, revealing potential pathogenicity-related genes and specific virulence factor genes. These findings will contribute to further research on host-pathogen interactions and the development of disease management strategies.
Article
Horticulture
Yinghao Liu, Zhiting Ma, Ran Chen, Weitao Jiang, Chengmiao Yin, Zhiquan Mao, Yanfang Wang
Summary: This study investigated the effect of biochar adsorption on phloridzin and the growth of Malus hupehensis Rehd. seedlings under phloridzin stress. The results showed that biochar addition significantly reduced the phloridzin content and promoted seedlings growth, and the effectiveness of the biochar depended on the pyrolysis temperature.
SCIENTIA HORTICULTURAE
(2022)
Article
Plant Sciences
Xiuxia Liu, Shaozhuo Xu, Xianpu Wang, Li Xin, Lishuang Wang, Zhiquan Mao, Xuesen Chen, Shujing Wu
Summary: Apple replant disease (ARD) is a complex syndrome that leads to reduced plant growth and fruit yields. This study found that overexpression of MdBAK1 in apple plants enhanced resistance to ARD and changes the microbial community structure in the rhizosphere soil. It also inhibited colonization and expansion of the main pathogen, Fusarium oxysporum.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Environmental Sciences
Xiaolong He, Baoying Yin, Jiran Zhang, Shasha Zhou, Zhongyong Li, Xueying Zhang, Jizhong Xu, Bowen Liang
Summary: Apple replant disease (ARD) is a common soil-borne disease that affects apple plants. The study found that adding melatonin to the replant soil can enhance plant tolerance to ARD by up-regulating the expression of antioxidant enzyme-related genes and increasing ROS scavenging enzyme activity. Melatonin also improves nitrogen absorption and utilization, promotes soil enzyme activity and bacterial richness, and reduces harmful fungi in the rhizosphere soil. These findings provide new insights into how melatonin enhances ARD tolerance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Felix Mahnkopp-Dirks, Viviane Radl, Susanne Kublik, Silvia Gschwendtner, Michael Schloter, Traud Winkelmann
Summary: Apple Replant Disease (ARD) is a widespread problem in the horticultural industry, affecting plant growth and fruit quality. This study used both culture-independent and culture-dependent approaches to investigate the endophytic root microbiome of apple plants in ARD-affected and unaffected soil. The results suggest that Streptomyces play a key role in the etiology of ARD in the field.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agronomy
Ulrike Cavael, Peter Lentzsch, Hilmar Schwarzel, Frank Eulenstein, Marion Tauschke, Katharina Diehl
Summary: The study demonstrates that specific management strategies can mitigate the impact of Apple Replant Disease on orchards. By using organic fertilisation and biofertilisation, the effects of the disease on plant vigour can be reduced, although not completely cured. The MDK treatment is resource-intensive but reliable, while the AMFbac treatment is considered more user-friendly.
Article
Plant Sciences
Haiyan Wang, Yuefan Sheng, Weitao Jiang, Fengbing Pan, Mei Wang, Xuesen Chen, Xiang Shen, Chengmiao Yin, Zhiquan Mao
Summary: This study investigates the effects of crop rotation on soil quality and seedling growth in an old apple orchard. It finds that rotating different crops can significantly improve soil quality and promote the growth of apple rootstock. The study also shows that certain crops have inhibitory effects on Fusarium species, and rotating crops can increase bacterial count and reduce fungal populations. In addition, crop rotation can enhance root respiration, enzyme activity, pH, and organic matter content, while decreasing soil bulk density.
HORTICULTURAL PLANT JOURNAL
(2022)