Effects of Intercropping on Rhizosphere Soil Bacterial Communities in Amorphophallus konjac

Wu, Jinping; Jiao, Zhenbiao; Zhou, Jie; Zhang, Wei; Xu, Shutao; Guo, Fengling

doi:10.4236/ojss.2018.89018

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…We hypothesize that this reduced abundance in RC may be attributed to the dominance of certain microbial groups within the sample. This dominance could also explain why the microbial community in RM appears more evenly distributed, contributing to its higher Chao1 index value (Wu et al, 2018).…”

Section: Effect Of Long-term Rubber-canna Agroforestry System On Soil...mentioning

confidence: 99%

“…From the analysis of the abundance and diversity of the top 10 species, it is known that 7 of them come from the phyla Proteobacteria (Figure 7, 8). Some of these bacteria have a high abundance in intercropping systems and are reported to be related to biogeochemical processes in improving soil quality by creating nutrient-rich soil as an ideal condition for the development and growth of plants and rhizosphere bacterial communities (Akob et al, 2022;Billah et al, 2019;Wu et al, 2018). For example, Pseudolabrys sp., which has the second highest abundance (Figure 7), with 517 ± 237 and 267 ± 86 in RC and RM, respectively, is reported to play a role in secreting naphthol-ASBIphosphohydrolase, an enzyme needed to dissolve P so that it can be used by plants (Shen et al, 2021).…”

Section: Effect Of Long-term Rubber-canna Agroforestry System On Soil...mentioning

confidence: 99%

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Studies on the Short- and Long-Term Effects of Rubber-Canna Agroforestry Through Soil Analysis and a Metagenomic Approach

Sasaerila,

Effendi,

Wijihastuti

et al. 2024

J Bio Bio Edu

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Agroforestry combines trees and crops for sustainable benefits. We explore rubber and canna integration into agroforestry, emphasizing sustainability, biodiversity, and carbon sequestration. This study assesses C. indica's viability beneath 7-8-year-old rubber plantations, examining its impact on soil, microbial communities, and latex production. The research site in Subang, Indonesia, features, at the beginning, six-year-old rubber trees with variations in sunlight under canopies. Wild C. indica rhizomes from Mid Java are planted beneath rubber trees and open ground. No significant difference was found in plant height, rhizome weight, leaf area, number of leaves, r/s ratio, SLA, LWR, and LAR between C. indica cultivated beneath rubber trees (RC agroforestry) and on open ground. Although not significant, RC soil had higher N, P, K, and organic C levels than rubber monoculture (RM) soil two years after adopting the rubber-canna agroforestry system. After six years, RC soil had a greater pH, C, N, P, and K, clay and silt content, and Shannon E index than RM soil. Analysis of soil metagenomics showed the phylum Proteobacteria dominates and enhances soil fertility, particularly in RC soils. These results increase latex output at the RC site over the RM location. In conclusion, the Rubber-Canna agroforestry system enhances sustainability, soil fertility, and crop yield, addressing food security and environmental concerns. The primary novelty of this six-year study lies in the integration of C. indica into Southeast Asia's rubber agroforestry systems, highlighting its unique characteristics such as low-light survival, which can contribute to food security and soil protection.

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Section: Effect Of Long-term Rubber-canna Agroforestry System On Soil...mentioning

confidence: 99%

Section: Effect Of Long-term Rubber-canna Agroforestry System On Soil...mentioning

confidence: 99%

Studies on the Short- and Long-Term Effects of Rubber-Canna Agroforestry Through Soil Analysis and a Metagenomic Approach

Sasaerila,

Effendi,

Wijihastuti

et al. 2024

J Bio Bio Edu

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Intercropping with Robinia pseudoacacia reduces soft rot incidence in konjac by modulating the root bacterial community

Meng,

Xin,

et al. 2024

Pest Management Science

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BACKGROUNDSoft rot (Pectobacterium aroidearum and Dickeya) is a devastating soil‐borne bacterial disease that threatens konjac production. Intercropping with false acacia has been shown to significantly reduce soft rot incidence in konjac by shifting the microbial community. However, how intercropping shapes the root bacterial community and affects soft rot incidence remains unclear. To address this, we investigated three konjac intercropping systems (false acacia, paulownia, and maize) to explore the relationships among intercropping, soft rot incidence, root bacterial community, soil enzyme activity, and soil properties.RESULTSKonjac intercropped with false acacia exhibited the lowest soft rot incidence and the lowest abundance of pathogenic taxa. Soft rot incidence was negatively correlated with total soil nitrogen and potassium but positively correlated with total and available soil phosphorus. The bacterial community structure and function in konjac roots differed among intercropping types, mainly driven by available soil phosphorus. Beneficial microorganisms such as Bradyrhizobium and Variovorax were enriched under a false acacia intercropping system and were negatively correlated with soil‐available phosphorus. Additionally, the stable bacterial community in healthy konjac roots under false acacia may make konjac less susceptible to pathogen invasion.CONCLUSIONThe study showed that intercropping reduced the soft rot incidence by regulating the structure and stability of the konjac root bacterial community, and soil‐available phosphorus was the main factor affecting the difference in the konjac root bacterial community, which provided a basis for the management of soil fertilization in konjac cultivation. © 2024 Society of Chemical Industry.

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Intercropping with marigold promotes soil health and microbial structure to assist in mitigating tobacco bacterial wilt

Feng

Zheng

et al. 2020

J Plant Pathol

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Marigold is reported to have antibacterial activity, and effectively protect crops against soil-borne diseases. However, it is not known whether and how tobacco bacterial wilt (TBW) could be mitigated via intercropping with marigold under field conditions. In this study, a field experiment was performed to measure and compare the occurrence of TBW, the soil chemical properties, and soil microbial composition and diversity between a tobacco-marigold intercropping system and a tobacco monocropping system. At 100 days (d) post-transplantation, the incidence (I) and disease index (DI) for the tobacco-marigold intercropping system were 30.12% and 58.25% lower than that for tobacco monocropping system, respectively. The results showed that Sobs, Shannon and Chao 1 index of soil bacterial communities in the tobacco-marigold intercropping system were 10.34%, 1.41% and 5.13% higher than that in the tobacco monocropping system at 100 d post-transplantation, respectively. It exhibited a higher richness and diversity of soil bacterial communities in the tobacco-marigold intercropping system. The relative abundance of some beneficial genera in tobacco-marigold intercropping system, such as Lysobacter, Burkholderia, Trichoderma, Mortierella, Chaetomium, Penicillium, was 1.50, 1.61, 3.35, 1.67, 4.40 and 4.50 fold higher than that in tobacco monocropping system. The presence of the intercropping system inhibited soil acidification and loss of soil calcium ions. The redundancy analysis (RDA) indicated that soil pH and exchange Ca2+ were the main environmental factors which seemed to influence the bacterial and fungal community. The results from this study provided valuable insight into the possible mechanisms enhancing soil health in the tobacco-marigold intercropping system.

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Effects of Intercropping on Rhizosphere Soil Bacterial Communities in Amorphophallus konjac

Cited by 4 publications

References 25 publications

Studies on the Short- and Long-Term Effects of Rubber-Canna Agroforestry Through Soil Analysis and a Metagenomic Approach

Studies on the Short- and Long-Term Effects of Rubber-Canna Agroforestry Through Soil Analysis and a Metagenomic Approach

Intercropping with Robinia pseudoacacia reduces soft rot incidence in konjac by modulating the root bacterial community

Intercropping with marigold promotes soil health and microbial structure to assist in mitigating tobacco bacterial wilt

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