Bio-organic Fertilizer Promotes Plant Growth and Yield and Improves Soil Microbial Community in Continuous Monoculture System of Chrysanthemum morifolium cv. Chuju

Wang, Jianfei; Li, Xiaoliang; Su-zhi, Xing; Ma, Zhongyou; Hu, Shuijin; Tu, Cong

doi:10.17957/ijab/15.0339

Cited by 15 publications

(16 citation statements)

References 27 publications

(39 reference statements)

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“…Inoculation of the sterilized soil with soil that was conditioned by another plant species reduced this negative plant-soil feedback effect. Such negative conspecific feedbacks are a commonly observed problem in continuous cropping systems (Song et al 2013;Zhou et al 2009;Wang et al 2017b). However, we now show that adding an inoculum consisting of soil conditioned by other plant species to the sterilized soil before the first growth cycle starts can reduce this negative effect.…”

Section: Discussionsupporting

confidence: 43%

Carry-over effects of soil inoculation on plant growth and health under sequential exposure to soil-borne diseases

kun

Pineda

Wurff³

et al. 2018

Plant Soil

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Background and aims Most plant-soil feedback and inoculation studies are limited to one growth cycle. We examined the effects of inoculation with eight plantconditioned soils on chrysanthemum during two sequential growth cycles. The plants were also exposed sequentially to soil diseases. Methods In cycle 1, plants were grown in sterile soil inoculated or not with plant-conditioned soils, and exposed or not to Pythium or root feeding nematodes. In cycle 2, new plants were grown in soil from cycle 1 or in new 100% sterile soil. Plants were exposed again to Pythium, or to soil with pathogens and nematodes collected from a commercial chrysanthemum greenhouse. Results After two cycles, effects of soil inoculation on plant growth were still present. Chrysanthemum exhibited a negative conspecific feedback response, but this was less strong in inoculated soils. Pythium or nematode addition did not affect plant growth. However, addition of pathogen-containing soil from the commercial greenhouse reduced plant growth in sterile soil but increased growth in plant-conditioned soils. Conclusions Inoculation with plant-conditioned soil can reduce the negative conspecific plant-soil feedback of chrysanthemum. Our study further advances our understanding of the temporal dynamics of conspecific and heterospecific plant-soil feedbacks, and how they interact with soil-borne diseases.

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Section: Discussionsupporting

confidence: 43%

Carry-over effects of soil inoculation on plant growth and health under sequential exposure to soil-borne diseases

kun

Pineda

Wurff³

et al. 2018

Plant Soil

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“…Fusarium wilt is an economically important disease for chrysanthemum greenhouse managers in China, and is detrimental to the floral industry through extensive quality loss and increased fungicide usage [1,34]. Fungicide application is the most effective current intervention against soilborne pathogens.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Soil-Applied Chemical Fungicide and Biofungicide for Control of the Fusarium Wilt of Chrysanthemum and Their Effects on Rhizosphere Soil Microbiota

et al. 2018

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Chemical fungicides are a frequently used intervention for the control of the Fusarium wilt of chrysanthemum, but are no longer considered environmentally friendly. However, the biofungicides offer one of the best alternatives to reduce the use of chemical fungicides. In this study, a series of two-year greenhouse experiments were conducted to evaluate the soil-applied chemical fungicide (dazomet, DZ) and biofungicide (biocontrol agent combined with B. subtilis NCD-2, BF) for controlling the Fusarium wilt of chrysanthemum and its effects on rhizosphere soil microbiota. The results indicated that DZ and BF showed good control efficacy of Fusarium wilt of chrysanthemum in the two-year application evaluation. However, the DZ treatment significantly decreased the soil catalase and urease activities compared with the control, while BF showed a significant increase in bacterium/fungus ratios (B/F), soil urease and acid phosphatase activities. Abundances of potential plant pathogens F. oxysporum, Rhizoctonia zeae and Rhizoctonia solani were also lower, while potential plant-growth-promoting micro-organisms like the Rhizobiales bacterium and Mariniflexile sp. were higher in the BF treatment than in the control. Our findings suggested that the overall effect of the soil biota on chrysanthemum growth was more positive and stronger in the BF treatment than in the DZ treatment.

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“…Chrysanthemum (Chrysanthemum morifolium cv. Chuju), a high-value medicinal plant, has been extensively planted in a mono-cropping pattern, although its yields are increasingly threatened by Fusarium wilt disease [32]. Here, the sequence-based approaches were conducted to investigate rhizosphere microbial community characters of both the conducive and suppressive soils of Chrysanthemum.…”

Section: Introductionmentioning

confidence: 99%

Phenolic Acid-Degrading Consortia Increase Fusarium Wilt Disease Resistance of Chrysanthemum

Zhou

Zhu

et al. 2020

Agronomy

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Soil microbial community changes imposed by the cumulative effects of root-secreted phenolic acids (PAs) promote soil-borne pathogen establishment and invasion under monoculture systems, but the disease-suppressive soil often exhibits less soil-borne pathogens compared with the conducive soil. So far, it remains poorly understood whether soil disease suppressiveness is associated with the alleviated negative effects of PAs, involving microbial degradation. Here, the long-term monoculture particularly shaped the rhizosphere microbial community, for example by the enrichment of beneficial Pseudomonas species in the suppressive soil and thus enhanced disease-suppressive capacity, however this was not observed for the conducive soil. In vitro PA-degradation assays revealed that the antagonistic Pseudomonas species, together with the Xanthomonas and Rhizobium species, significantly increased the efficiency of PA degradation compared to single species, at least partially explaining how the suppressive soil accumulated lower PA levels than the conducive soil. Pot experiments further showed that this consortium harboring the antagonistic Pseudomonas species can not only lower PA accumulation in the 15-year conducive soils, but also confer stronger Fusarium wilt disease suppression compared with a single inoculum with the antagonistic bacteria. Our findings demonstrated that understanding microbial community functions, beyond the single direct antagonism, facilitated the construction of active consortia for preventing soil-borne pathogens under intensive monoculture.

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Bio-organic Fertilizer Promotes Plant Growth and Yield and Improves Soil Microbial Community in Continuous Monoculture System of Chrysanthemum morifolium cv. Chuju

Cited by 15 publications

References 27 publications

Carry-over effects of soil inoculation on plant growth and health under sequential exposure to soil-borne diseases

Carry-over effects of soil inoculation on plant growth and health under sequential exposure to soil-borne diseases

Evaluation of Soil-Applied Chemical Fungicide and Biofungicide for Control of the Fusarium Wilt of Chrysanthemum and Their Effects on Rhizosphere Soil Microbiota

Phenolic Acid-Degrading Consortia Increase Fusarium Wilt Disease Resistance of Chrysanthemum

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