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 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

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 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.

scholarly journals Effects of Funneliformis mosseae on Root Metabolites and Rhizosphere Soil Properties to Continuously-Cropped Soybean in the Potted-Experiments

2018 ◽  
Vol 19 (8) ◽  
pp. 2160 ◽  
Author(s):  
Jia-Qi Cui ◽  
Hai-Bing Sun ◽  
Ming-Bo Sun ◽  
Rui-Ting Liang ◽  
Wei-Guang Jie ◽  
...  
Keyword(s):  
Treatment Group ◽  
Physicochemical Properties ◽  
Soil Properties ◽  
Root Exudates ◽  
Rhizosphere Soil ◽  
Disease Index ◽  
Root Tissue ◽  
Soybean Cultivar ◽  
Control Group ◽  
Continuous Cropping

Continuous cropping in soybean is increasingly practiced in Heilongjiang Province, leading to substantial yield reductions and quality degradation. Arbuscular mycorrhizal fungi (AMF) are soil microorganisms that form mutualistic interactions with plant roots and can restore the plant rhizosphere microenvironment. In this study, two soybean lines (HN48 and HN66) were chosen as experimental materials, which were planted in different years of continuous cropping soybean soils and were inoculated or not with Funneliformis mosseae in potted-experiments. Ultimately, analysis of root tissue metabolome and root exudates, soil physicochemical properties, plant biomass, as well as rhizosphere soil properties in different experimental treatments, inoculated or not with F. mosseae, was performed. Experimental results showed that: (a) The disease index of soybean root rot was significantly lower in the treatment group than in the control group, and there were differences in disease index and the resistance effect of F. mosseae between the two cultivars; (b) compared with the control, the root tissue metabolome and root exudates remained unchanged, but there were changes in the relative amounts in the treatment group, and the abundant metabolites differed by soybean cultivar; (c) soybean biomass was significantly higher in the treatment group than in the control group, and the effect of F. mosseae on biomass differed with respect to the soybean cultivar; and (d) there were differences in the physiochemical indexes of soybean rhizosphere soil between the treatment and control groups, and the repairing effect of F. mosseae differed between the two cultivars. Therefore, F. mosseae can increase the biomass of continuously cropped soybean, improve the physicochemical properties of the rhizosphere soil, regulate the root metabolite profiles, and alleviate barriers to continuous cropping in potted-experiments of soybean.

Effect of continuous cropping on allelopathy of peanut root exudates

2011 ◽  
Vol 19 (3) ◽  
pp. 639-644
Author(s):  
Ping LIU ◽  
Hai-Jun ZHAO ◽  
Shu-Bo WAN ◽  
Hai-Xia REN ◽  
Jin LI ◽  
...  
Keyword(s):  
Root Exudates ◽  
Continuous Cropping

Characteristics of soil microflora of Panax notoginseng in different continuous cropping years

2018 ◽  
Vol 44 (2) ◽  
pp. 145-158 ◽  
Author(s):  
H.J. Liu ◽  
X.Y. Yang ◽  
Z.Q. Miao ◽  
S.D. Li ◽  
Y.H. Chen ◽  
...  
Keyword(s):  
Panax Notoginseng ◽  
Soil Microflora ◽  
Continuous Cropping
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