scholarly journals Accumulation of cinnamic acid and vanillin in eggplant root exudates and the relationship with continuous cropping obstacle

2011 ◽  
Vol 10 (14) ◽  
pp. 2659-2665 ◽  
Author(s):  
Chen Shaoli ◽  
Zhou Baoli ◽  
Lin Shanshan ◽  
Li Xia ◽  
Ye Xueling
Keyword(s):  
Root Exudates ◽  
Cinnamic Acid ◽  
Continuous Cropping ◽  
The Relationship

Incidence of Fusarium wilt in Cucumis sativus L. is promoted by cinnamic acid, an autotoxin in root exudates

2004 ◽  
Vol 263 (1) ◽  
pp. 143-150 ◽  
Author(s):  
S.F. Ye ◽  
J.Q. Yu ◽  
Y.H. Peng ◽  
J.H. Zheng ◽  
L.Y. Zou
Keyword(s):  
Cucumis Sativus ◽  
Fusarium Wilt ◽  
Root Exudates ◽  
Cinnamic Acid ◽  
Cucumis Sativus L

scholarly journals The Physiological and Biochemical Effects of Phthalic Acids and the Changes of Rhizosphere Fungi Diversity under Continuous Cropping of Lanzhou Lily (Lilium davidii var. unicolor)

HortScience ◽  
2019 ◽  
Vol 54 (2) ◽  
pp. 253-261 ◽  
Author(s):  
Cui-ping Hua ◽  
Zhong-kui Xie ◽  
Zhi-jiang Wu ◽  
Yu-bao Zhang ◽  
Zhi-hong Guo ◽  
...  
Keyword(s):  
Root Exudates ◽  
Fungal Pathogens ◽  
Membrane Lipid ◽  
Regular Growth ◽  
Continuous Cropping ◽  
Shoot Height ◽  
Rhizosphere Fungi ◽  
Phthalic Acids ◽  
Lanzhou Lily ◽  
Lilium Davidii

The autotoxicity of root exudates and the change of rhizosphere soil microbes are two important factors that affect the quality and yield of Lanzhou lily (Lilium davidii var. unicolor). Phthalic acid (PA) is a major autotoxin of the root exudates in Lanzhou lily. In this study, we treated plants with different concentrations of PA from the Lanzhou lily root exudates and then analyzed the effects of autotoxins on fresh weight, shoot height, root length, and Oxygen Radical Absorbance Capacity in root. The diversity of soil fungi in Lanzhou lily soil was analyzed using MiSeq. The results showed that PA induced oxidative stress and oxidative damage of Lanzhou lily roots, improved the level of the membrane lipid peroxidation, reduced the content of antioxidant defense enzyme activity and the nonenzymatic antioxidant, and eventually inhibited the growth of the Lanzhou lily. We found that continuous cropping of Lanzhou lily resulted in an increase in fungal pathogens, such as Fusarium oxysporum in the soil, and reduced the size of plant-beneficial bacteria populations. The results in this study indicate that continuous cropping would damage the regular growth of Lanzhou lily.

scholarly journals Features of the initial stages of the relationship between barley, phytopathogenic fungus Fusarium culmorum and rhizobacteria Pseudomonas fluorescens 2137

2020 ◽  
Author(s):  
A. I. Shaposhnikov ◽  
N. A. Vishnevskaya ◽  
V. Yu. Shakhnazarova ◽  
D. S. Syrova ◽  
E. V. Borodina ◽  
...  
Keyword(s):  
Pseudomonas Fluorescens ◽  
Root Exudates ◽  
Plant Defence ◽  
Fusarium Culmorum ◽  
Phytopathogenic Fungus ◽  
The Relationship

It was shown that enhanced colonization of barley's roots by Fusarium culmorum in the presence of Pseudomonas fluorescens 2137 may be due to the composition of root exudates. Strain 2137 can enhance expression of plant defence gene PAL.

scholarly journals Cinnamic Acid Increased the Incidence of Fusarium Wilt by Increasing the Pathogenicity of Fusarium oxysporum and Reducing the Physiological and Biochemical Resistance of Faba Bean, Which Was Alleviated by Intercropping With Wheat

2020 ◽  
Vol 11 ◽  
Author(s):  
Yuting Guo ◽  
J. Lv ◽  
Q. Zhao ◽  
Yan Dong ◽  
K. Dong
Keyword(s):  
Fusarium Oxysporum ◽  
Cinnamic Acid ◽  
Faba Bean ◽  
Acid Stress ◽  
Continuous Cropping ◽  
Toxic Substances ◽  
Defense System ◽  
Faba Beans ◽  
Hydroponic Conditions

BackgroundContinuous cropping has resulted in the accumulation of self-toxic substances in faba beans which has restricted their global production. Intercropping is widely used to alleviate these problems.AimsTo explore the role of cinnamic acid stress in faba bean physiology and disease resistance, and the potential mitigating effects of intercropping the faba bean with wheat.MethodsFaba bean seedlings were grown with or without wheat in both field and hydroponic conditions in the presence of different cinnamic acid concentrations and Fusarium oxysporum (FOF), the occurrence of. Fusarium-mediated wilt and oxidative stress, as well as plant growth indices and the anti-pathogen defense system were analyzed.ResultsCinnamic acid significantly increased Fusarium pathogenicity, inhibited the activity of defense enzymes and reduced the ability of plants to resist pathogens, indicating the importance of cinnamic acid in the promotion of Fusarium wilt resulting in reduced seedling growth. Intercropping with wheat improved plant resistance by alleviating cinnamic acid-induced stress, which promoted crop growth and decreased the incidence and disease index of Fusarium wilt.ConclusionCinnamic acid promotes Fusarium wilt by stimulating pathogen enzyme production and destroying the defense capability of faba bean roots. Intercropping reduces Fusarium wilt by alleviating the damage caused by cinnamic acid to the defense system of the faba bean root system.

Analysis of microbial changes in the rhizosphere of unplanted and planted Atractylodes lancea via high-throughput sequencing

2020 ◽  
Author(s):  
Yan Xu ◽  
Junfeng Niu ◽  
Lijun Chen ◽  
Xiaoqiang Wu ◽  
Zhongmin Dong ◽  
...  
Keyword(s):  
Microbial Community ◽  
High Throughput ◽  
Relative Abundance ◽  
High Throughput Sequencing ◽  
Community Diversity ◽  
Continuous Cropping ◽  
Pests And Diseases ◽  
Atractylodes Lancea ◽  
Bacteria And Fungi ◽  
The Relationship

Abstract Background Atractylodes lancea is a traditional Chinese medicine, which typically requires more than 3–4 years of continuous cropping to obtain the underground medicinal components. With continuous cropping years, the quality and yields of A. lancea medicinal materials decrease, while pests and diseases increase. These aspects are intimately correlated with rhizospheric microorganisms. Methods This research paper employed high-throughput sequencing for its detection in soil that was cultivated for three years and never cultivated to clarify the relationship between the microbial diversity of the rhizosphere and continuous A. lancea cropping. Results The rhizosphere microbial community was altered following the continuous cropping of A. lancea. The bacterial diversity and richness were observed to decrease, while the fungal community diversity increased, and richness decreased. The total OUTs of the soil bacteria and fungi of unplanted and planted A. lancea were 59.58% and 37.65%, respectively. At the phylum level, the relative abundance of Proteobacteria, Gemmatimonadetes, Acidobacteria and Chloroflexi decreased, whereas the relative abundance of Mortierellomycota increased. At the genus level, Bradyrhizobium, Striaticonidium, Dactylonectria, Sphingomonas, Burkholderiaceae, Rhodanobacter, Arthrobacter, Scleroderma, Mortierella and Penicillium were significantly different between the two sample groups. Conclusions Our results revealed that following the cultivation of A. lancea, the rhizospheric microbial community was altered. This study preliminarily determined the

Effects of grafted eggplants on allelopathy of cinnamic acid and vanillin in root exudates

2009 ◽  
Vol 11 (02) ◽  
pp. 119-122
Author(s):  
Chen Shaoli ◽  
Zhou Baoli ◽  
Wang Ruhua ◽  
Xi Haijun
Keyword(s):  
Root Exudates ◽  
Cinnamic Acid

scholarly journals Biodiversity of segetal weed community in continuous potato cultivated with metribuzin-based weed control

2015 ◽  
Vol 55 (1) ◽  
pp. 52-57
Author(s):  
Zbigniew Pawlonka ◽  
Katarzyna Rymuza ◽  
Krzysztof Starczewski ◽  
Antoni Bombik
Keyword(s):  
Species Diversity ◽  
Weed Control ◽  
Dominant Species ◽  
Species Number ◽  
Continuous Cropping ◽  
Weed Communities ◽  
Weed Infestation ◽  
The Relationship ◽  
Experimental Plots ◽  
Segetal Communities

Abstract The objective of the work reported here was to determine the relationship between herbicide rate and the biodiversity of weed communities in potato cultivated in continuous cropping. A seven-year field experiment was conducted to examine the effect of 4 metribuzin rates and an uncontrol on weed infestation in successive years of continuous potato cultivation. The following indices were calculated: the Shannon-Wiener and Simpson’s indices of species diversity and the Simpson’s index of domination. A total of 33 species were recorded in the experimental plots. Echinochoa crus-galli was the dominant species. The most abundant segetal communities were observed in untreated plots. An application of the herbicide reduced the biodiversity of the agrophytocenosis. Cultivation in continuous cropping increased the species number of the weed community in potato. The herbicide and cultivation in continuous cropping did not significantly affect the biodiversity indices but their values, to a great extent, confirmed the trends revealed by the analysis of weed infestation

scholarly journals SIMULATION OF AUTOTOXICITY OF STRAWBERRY ROOT EXUDATES UNDER CONTINUOUS CROPPING

2004 ◽  
Vol 28 (6) ◽  
pp. 828-832 ◽  
Author(s):  
ZHEN Wen-Chao ◽  
◽  
CAO Ke-Qiang* DAI Li and ZHANG Xue-Ying ◽  
$author.xingMing_EN ◽  
$author.xingMing_EN
Keyword(s):  
Root Exudates ◽  
Continuous Cropping

scholarly journals Responses of Bacterial Community in Cotton Rhizosphere Soil to the Application of Chitosan under Different Cultivation Patterns

2021 ◽  
Author(s):  
Wang jingang ◽  
Tian Tian ◽  
Haijiang Wang ◽  
Zheng Liu ◽  
jing Cui ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Information Processing ◽  
Bacterial Community ◽  
Bacterial Diversity ◽  
Soil Nutrients ◽  
Root Exudates ◽  
Illumina Miseq ◽  
Community Diversity ◽  
Cotton Field ◽  
Continuous Cropping

Abstract Aims Continuous cropping leads to the decreasing of soil nutrients and microbial diversity. This study aims to explore the effects of chitosan application on soil nutrient, enzyme activity, root exudates, and bacterial diversity in cotton field.Methods Topsoils were collected from four treatments (continuous cotton cropping (Ct), continuous cotton cropping with chitosan application (CtC), rotation (Rt) (cotton-corn-wheat), and rotation with chitosan application (RtC)) to determine the effects of chitosan on soil nutrients, enzyme activity, root exudates, and bacterial diversity under different cultivation patterns. The structure and functions of bacterial communities were analyzed using Illumina MiSeq sequencing and PICRUSt approach.Results Root exudates in CtC, Rt, and RtC treatments were higher than that in Ct treatment, while soil nutrients were lower. Soil enzyme activities were higher in Rt treatment than in Ct treatment, while only catalase activity was higher in CtC treatment. The abundance of Actinomycetes, Proteobacteria, Chloroflexi, and Bacteroidetes in Rt and CtC treatments, Firmicutes in Rt treatment, and Gemmatimonadetes in CtC treatment were higher than those in Ct treatment. PICRUSt analysis showed that the abundance of functional genes for soil microbial metabolism, environmental information processing, and organismal systems were higher in Rt, CtC, and RtC treatments than in Ct treatment, while that of genes for genetic information processing, cellular processes, and human diseases were slightly higher. Conclusions Chitosan application in cotton fields under different cultivation patterns could improve nutrient availability in continuous-cropping soils by reducing root exudates and improving soil bacterial community diversity, to reduce continuous cropping obstacles.

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