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Dive into the research topics where Yanhai Zheng is active.

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Featured researches published by Yanhai Zheng.


Journal of Plant Physiology | 2008

POTASSIUM NITRATE APPLICATION ALLEVIATES SODIUM CHLORIDE STRESS IN WINTER WHEAT CULTIVARS DIFFERING IN SALT TOLERANCE

Yanhai Zheng; Aijun Jia; Tangyuan Ning; Jialin Xu; Zengjia Li; Gaoming Jiang

A sand culture experiment was conducted to answer the question whether or not exogenous KNO(3) can alleviate adverse effects of salt stress in winter wheat by monitoring plant growth, K(+)/Na(+) accumulation and the activity of some antioxidant enzymes. Seeds of two wheat cultivars (CVs), DK961 (salt-tolerant) and JN17 (salt-sensitive), were planted in sandboxes and controls germinated and raised with Hoagland nutrient solution (6 mM KNO(3), no NaCl). Experimental seeds were exposed to seven modified Hoagland solutions containing increased levels of KNO(3) (11, 16, 21 mM) or 100 mM NaCl in combination with the four KNO(3) concentrations (6, 11, 16 and 21 mM). Plants were harvested 30 d after imbibition, with controls approximately 22 cm in height. Both CVs showed significant reduction in plant height, root length and dry weight of shoots and roots under KNO(3) or NaCl stress. However, the combination of increased KNO(3) and NaCl alleviated symptoms of the individual salt stresses by improving growth of shoots and roots, reducing electrolyte leakage, malondialdehyde and soluble sugar contents and enhancing the activities of antioxidant enzymes. The salt-tolerant cultivar accumulated more K(+) in both shoots and roots compared with the higher Na(+) accumulation typical for the salt-sensitive cultivar. Soluble sugar content and activities of antioxidant enzymes were found to be more stable in the salt-tolerant cultivar. Our findings suggest that the optimal K(+)/Na(+) ratio of the nutrient solution should be 16:100 for both the salt-tolerant and the salt-sensitive cultivar under the experimental conditions used, and that the alleviation of NaCl stress symptoms through simultaneously applied elevated KNO(3) was more effective in the salt-tolerant than in the salt-sensitive cultivar.


PLOS ONE | 2013

Effects of External Potassium (K) Supply on Drought Tolerances of Two Contrasting Winter Wheat Cultivars

Jiguang Wei; Caihong Li; Yong-jun Li; Gaoming Jiang; Guanglei Cheng; Yanhai Zheng

Background Drought is a common stress limiting crops growth and productivities worldwide. Water deficit may increase cellular membrane permeability, resulting in K outflow. Internal K starvation may disorder plant metabolism and limit plant growth. However, it is seldom reported about the effects of external K on drought tolerance of contrasting wheat cultivars. Methodology/Principal Findings A hydroponics experiment was carried out in a non-controlled greenhouse. Seedlings of drought-tolerant SN16 and intolerant JM22 were simultaneously treated by five levels of K2CO3 (0, 2.5, 5, 7.5, 10 mM) and two levels of PEG6000 (0, 20%) for 7 days. External K2CO3 significantly increased shoot K+ content, water potential, chlorophyll content as well as gas exchange, but decreased electrolyte leakage (EL) and MDA content in both cultivars under PEG6000 stress. Antioxidant enzymes activities were up-regulated by PEG6000 while external K2CO3 reduced those changes. Molecular basis was explained by measuring the expression levels of antioxidant enzymes related genes. Shoot and root biomass were also increased by K2CO3 supply under drought stress. Although adequate K2CO3 application enhanced plant growth for both cultivars under drought stress, SN16 was better than JM22 due to its high drought tolerance. Conclusions/Significance Adequate external K may effectively protect winter wheat from drought injuries. We conclude that drought-tolerant wheat combined with adequate external K supply may be a promising strategy for better growth in arid and semi-arid regions.


Journal of Environmental Sciences-china | 2011

Cadmium pollution enhanced ozone damage to winter wheat: biochemical and physiological evidences

Yong Li; Caihong Li; Yanhai Zheng; Guanglei Wu; Tana Wuyun; Hong Xu; Xinhua He; Gaoming Jiang

Combined effects of ozone (03) and cadmium (Cd) on growth and physiology of winter wheat (Triticum aestivum L. cv. JM22) were determined. Wheat plants were grown without or with Cd and exposed to charcoal-filtered air (< 10 ppb O3) or elevated O3 (80 +/- 5 ppb, 7 hr/day) for 20 days. Results showed that 03 considerably depressed light saturated net photosynthetic rate (-20%), stomatal conductance (-33%), chlorophyll content (-33%), and total biomass (-29%) without Cd. The corresponding decreases were further enhanced by 45%, 56%, 60% and 59%, respectively with Cd, indicating a synergistic effect of O3 and Cd on wheat. Ozone significantly increased the activity of superoxide dismutase (46%), catalase (48%) and peroxidase (56%). However, great increases in malondialdehyde (MDA) content (2.55 folds) and intercellular CO2 concentration (1.13 folds) were noted in O3+Cd treatment compared to control. Our findings demonstrated that the increased anti-oxidative activities in wheat plants exposed to O3+Cd might not be enough to overcome the adverse effects of the combination of both pollutants as evidenced by further increase in MDA content, which is an important indicator of lipid peroxidation. Precise prediction model on O3 damages to crop should be conducted to ensure agricultural production security by considering environmental constraints in an agricultural system in peri-urban regions.


PLOS ONE | 2013

Flixweed Is More Competitive than Winter Wheat under Ozone Pollution: Evidences from Membrane Lipid Peroxidation, Antioxidant Enzymes and Biomass

Caihong Li; Tian-Zuo Wang; Yong Li; Yanhai Zheng; Gaoming Jiang

To investigate the effects of ozone on winter wheat and flixweed under competition, two species were exposed to ambient, elevated and high [O3] for 30 days, planted singly or in mixculture. Eco-physiological responses were examined at different [O3] and fumigating time. Ozone reduced the contents of chlorophyll, increased the accumulation of H2O2 and malondialdehyde in both wheat and flixweed. The effects of competition on chlorophyll content of wheat emerged at elevated and high [O3], while that of flixweed emerged only at high [O3]. The increase of H2O2 and malondialdehyde of flixweed was less than that of wheat under the same condition. Antioxidant enzyme activities of wheat and flixweed were seriously depressed by perennial and serious treatment using O3. However, short-term and moderate fumigation increased the activities of SOD and POD of wheat, and CAT of flixweed. The expression levels of antioxidant enzymes related genes provided explanation for these results. Furthermore, the increase of CAT expression of flixweed was much higher than that of SOD and POD expression of wheat. Ozone and competition resulted in significant reductions in biomass and grain yield in both winter wheat and flixweed. However, the negative effects on flixweed were less than wheat. Our results demonstrated that winter wheat is more sensitive to O3 and competition than flixweed, providing valuable data for further investigation on responses of winter wheat to ozone pollution, in particular combined with species competition.


Scientific Reports | 2016

Biodiversity management of organic farming enhances agricultural sustainability

Haitao Liu; Jie Meng; Wenjing Bo; Da Cheng; Yong Li; Liyue Guo; Caihong Li; Yanhai Zheng; Meizhen Liu; Tangyuan Ning; Guanglei Wu; Xiaofan Yu; Sufei Feng; Tana Wuyun; Jing Li; Lijun Li; Yan Zeng; Shi V. Liu; Gaoming Jiang

Organic farming (OF) has been believed to be capable of curtailing some hazardous effects associated with chemical farming (CF). However, debates also exist on whether OF can feed a world with increasing human population. We hypothesized that some improvements on OF may produce adequate crops and reduce environmental pollutions from CF. This paper makes comparative analysis of crop yield, soil organic matter and economic benefits within the practice on Biodiversity Management of Organic Farming (BMOF) at Hongyi Organic Farm (HOF) over eight years and between BMOF and CF. Linking crop production with livestock to maximal uses of by-products from each production and avoid xenobiotic chemicals, we have achieved beneficial improvement in soil properties, effective pest and weed control, and increased crop yields. After eight years experiment, we have obtained a gradual but stable increase in crop yields with a 9.6-fold increase of net income. The net income of HOF was 258,827 dollars and 24,423 dollars in 2014 and 2007 respectively. Thus, BMOF can not only feed more population, but also increase adaptive capacity of agriculture ecosystems and gain much higher economic benefits.


Science of The Total Environment | 2014

Ozone pollution effects on gas exchange, growth and biomass yield of salinity-treated winter wheat cultivars

Yanhai Zheng; Da Cheng; Matthew Simmons

A sand-culture experiment was conducted in four Open-Top-Chambers to assess the effects of O3 on salinity-treated winter wheat. Two winter wheat cultivars, salt-tolerant Dekang961 and salt-sensitive Lumai15, were grown under saline (100 mM NaCl) and/or O3 (80±5 nmol mol(-1)) conditions for 35 days. Significant (P<0.05) O3-induced decreases were noted for both cultivars in terms of gas exchange, relative water content, growth and biomass yield in the no-salinity treatment. Significant (P<0.01) corresponding decreases were measured in Dekang961 but not in Lumai15 in the salinity treatment. Soluble sugar and proline contents significantly increased in both cultivars in combined salinity and O3 exposure. O3-induced down-regulation in the gradients of A-C(i) and A-PPFD response curves were much larger in Dekang961 than in Lumai15 under saline conditions. Significant (P<0.05) interactions were noted in both salinity×cultivars and salinity×O3 stresses. The results clearly demonstrated that O3 injuries were closely correlated with plant stomatal conductance (g(s)); the salt-tolerant wheat cultivar might be damaged more severely than the salt-sensitive cultivar by O3 due to its higher g(s) in saline conditions.


Journal of Renewable and Sustainable Energy | 2018

Biomass energy utilization and soil carbon sequestration in rural China: A case study based on circular agriculture

Guanglei Wu; Da Cheng; Lijun Li; Caihong Li; Gaoming Jiang; Yanhai Zheng

Biogas projects have been promoted by the Chinese government in rural areas for several decades. However, these projects have proceeded slowly under the lack of biogas production technology. A circular agricultural experiment in combination with a local biogas promotion project was carried out in Jiangjiazhuang, a typical agricultural village in China, from 2008 to 2015. Agricultural production proceeded in an agricultural loop: “Crops → Grains/crop residues → Human/cattle → Human/cattle excreta → Biogas digester → Biogas/biogas residues → Domestic fuels/organic fertilizers → Crops.” The abundant crop residues were used as cattle forage to turn the biomass energy into human-edible food. Human/cattle dejecta was used as the substrate to produce biogas for livelihood energy. Biogas digester residues were used as organic fertilizers after composting to improve soil quality and crop yield. The results showed that the proportion of crop residues used for cattle forage increased from 1.3% in 2008 to 86.2% in 20...


Renewable & Sustainable Energy Reviews | 2010

Biomass energy utilization in rural areas may contribute to alleviating energy crisis and global warming: A case study in a typical agro-village of Shandong, China

Yanhai Zheng; Z.F. Li; Sufei Feng; M. Lucas; Guanglei Wu; Yong Li; C.H. Li; Gaoming Jiang


Environmental and Experimental Botany | 2008

Higher salinity tolerance cultivars of winter wheat relieved senescence at reproductive stage

Yanhai Zheng; Zhenlin Wang; Xuezhen Sun; Aijun Jia; Gaoming Jiang; Zengjia Li


Field Crops Research | 2013

Coupling effects of urea types and subsoiling on nitrogen–water use and yield of different varieties of maize in northern China

Hengyu Hu; Tangyuan Ning; Zengjia Li; Huifang Han; Zongzheng Zhang; Shujun Qin; Yanhai Zheng

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Gaoming Jiang

Chinese Academy of Sciences

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Zengjia Li

Shandong Agricultural University

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Tangyuan Ning

Shandong Agricultural University

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Caihong Li

Chinese Academy of Sciences

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Guanglei Wu

Chinese Academy of Sciences

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Sufei Feng

Shandong Agricultural University

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Da Cheng

Chinese Academy of Sciences

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Haitao Liu

Chinese Academy of Sciences

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