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	1. Effect of maize-soybean intercropping and nitrogen rates on crop nitrogen and carbon uptake in upland red soil
	YANG Wenting,MIAO Jianqun,WANG Xiaowei,XU Jiancheng,LU Meijuan
	Agronomy 04 May 2017
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	Abstract:The objective of this research was to determine the effect of cropping patterns (mono maize, mono soybean and maize-soybean intercropping) and nitrogen rates (0, 75, 150, 225, 300 kg/ha) on crop biomass, nitrogen and carbon accumulation in upland red soil. The results show that: Compared with sole maize, maize dry matter yield and carbon accumulation decreased when in intercropped soybean. Also, the interaction between intercropping and nitrogen rates changed nitrogen accumulation and distribution in crop grain, straw and root. Nitrogen application significantly increased maize dry matter yield, nitrogen and carbon accumulation, but reduced those of soybean. In a conclusion, corn-soybean intercropping and nitrogen rates affected the growth of corn and soybean in upland red soil, and changed the allocations of nitrogen and carbon. Maize-soybean intercropping should be an effective and sustainable cropping system for upland red soil.
	TO cite this article:YANG Wenting,MIAO Jianqun,WANG Xiaowei, et al. Effect of maize-soybean intercropping and nitrogen rates on crop nitrogen and carbon uptake in upland red soil[OL].[ 4 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4732613


	2. BnaABF2, a bZIP transcription factor from rapeseed (Brassica napus L.), enhances drought and salt tolerance in transgenic Arabidopsis
	ZHAO Biyan,HU Yufeng,LI Juanjuan,WU Gaobing,YAO Xuan
	Agronomy 13 May 2016
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	Abstract:Abiotic stresses such as drought and salt stresses have a negative affection the growth and productivity of plants. Improvement of stress tolerance through genetic engineering in plants has been reported in intense studies. Transcription factors play vital roles in plant adaptation to stresses by regulating expression of a great deal of target genes. A family of Arabidopsis basic region leucine zipper (bZIP) transcription factors that can recognize and bind to the abscisic acid (ABA)-responsive elements (ABREs) in promoter is named as ABRE binding factors (ABFs)/ABRE binding proteins (AREBs). They play a key role in the regulation of expression of downstream stress-responsive genes in ABA signalling. Genetic transformation of ABF/ABRE transcription factors has been suggested to be an effective approach for engineering stress-tolerant plants. However, whether the ABF/ABRE transcription factors are able to be used for generating stress-tolerant rapeseed plants has not yet been studied.BnaABF2, encoding a basic region leucine zipper (bZIP) transcription factor, was cloned from rapeseed in this study. Subcellular localization and transactivation analyses showed that BnaABF2 was localized to the nucleus with transactivation activity in plant cells. BnaABF2 gene expression was induced by drought and salt stresses and BnaABF2 positively functions in ABA signalling during the vegetative stage. Overexpression of BnaABF2 was found to render drought and salt tolerance to Arabidopsis plants. The resistance of the BnaABF2-expressing transgenic plants to drought and salt stresses is due to reduced water-loss rate and expression of stress-responsive genes such as RD29B, RAB18 and KIN2. The expression of RD29B, RAB18 and KIN2 regulated by BnaABF2 is involved in an ABA-dependent stress signalling.
	TO cite this article:ZHAO Biyan,HU Yufeng,LI Juanjuan, et al. BnaABF2, a bZIP transcription factor from rapeseed (Brassica napus L.), enhances drought and salt tolerance in transgenic Arabidopsis[OL].[13 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4688731


	3. Elevation of arginine decarboxylase-dependent putrescine production enhances aluminum tolerance by decreasing aluminum retention in root cell walls of wheat
	Yu Yan,Jin Chongwei,Sun Chengliang,Wang Jinghong,Ye Yiquan,Lu Lingli,Lin Xianyong
	Agronomy 09 July 2015
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	Abstract:Aluminum (Al) stress induces putrescine (Put) accumulation in several plants and this response is proposed to alleviate Al toxicity. However, the mechanisms underlying this alleviation remain largely unknown. Here, we show that exposure to Al clearly increases Put accumulation in the roots of wheat plants (Triticum aestivum L. 'Xi Aimai-1') and that this was accompanied by significant increase in the activity of arginine decarboxylase (ADC), a Put producing enzyme. Application of an ADC inhibitor (D-arginine) terminated the Al-induced Put accumulation, indicating that increased ADC activity may be responsible for the increase in Put accumulation in response to Al. The D-arginine treatment also increased the Al-induced accumulation of cell wall polysaccharides and the degree of pectin demethylation in wheat roots. Thus, it elevated Al retention in cell walls and exacerbated Al accumulation in roots, both of which aggravate Al toxicity in wheat plants. The opposite effects were true for exogenous Put application. These results suggest that ADC-dependent Put accumulation plays important roles in providing protection against Al toxicity in wheat plants through decreasing cell wall polysaccharides and increasing the degree of pectin methylation, thus decreasing Al retention in the cell walls.
	TO cite this article:Yu Yan,Jin Chongwei,Sun Chengliang, et al. Elevation of arginine decarboxylase-dependent putrescine production enhances aluminum tolerance by decreasing aluminum retention in root cell walls of wheat[J].


	4. Alleviated aluminum toxicity by exogenous nitric oxide in wheat: toward regulating the ascorbate-glutathione cycle
	Sun Chengliang,Liu Lijuan,Yu Yan,Liu Wenjing,Lu Lingli,Jin Chongwei,Lin Xianyong
	Agronomy 23 July 2014
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	Abstract:The possible association with nitric oxide (NO) and ascorbate-glutathione (AsA-GSH) cycle in regulating aluminum (Al) tolerance of wheat was investigated using two genotypes with different Al resistance. Exposure to Al inhibited root elongation, triggered lipid peroxidation and oxidation of AsA and GSH to dehydroascorbate and glutathione disulfide, respectively, in wheat roots. Exogenous NO significantly increased endogenous NO levels, and subsequently alleviated Al-induced inhibition of root elongation and oxidation of AsA and GSH to maintain the redox molecules in reduced form in both wheat genotypes. Under Al stress, significantly increased activity and gene transcriptional level of ascorbate peroxidase, glutathione reductase, and dehydroascorbate reductase, were observed in the root tips of the Al-tolerant genotype Jian-864. NO application enhanced the activity and gene transcriptional level of all the above mentioned enzymes in both wheat genotypes. γ-Glutamylcysteine synthetase was not significantly affected by Al as well as NO, but NO treatments increased glutathione peroxidase and glutathione S-transferase activity to a greater extent than the Al-treated wheat seedlings. Proline was significantly decreased by Al, while was not affected by NO. These results clearly suggest the role of NO in providing protection against Al-induced oxidative stress which possibly through its regulation of the AsA-GSH cycle.
	TO cite this article:Sun Chengliang,Liu Lijuan,Yu Yan, et al. Alleviated aluminum toxicity by exogenous nitric oxide in wheat: toward regulating the ascorbate-glutathione cycle[OL].[23 July 2014] http://en.paper.edu.cn/en_releasepaper/content/4604889


	5. Wavelet-based denoising of spectral domain for hyperspectral Images
	YANG Hao,ZHANG Dongyan,HUANG Linsheng,ZHAO Jinling
	Agronomy 28 April 2014
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	Abstract:Imaging spectroradiometers are highly susceptible to noise. Accurately quantitative processing with more high quality is obligatory before any derivative analysis, especially for precise agriculture application. Aiming at the Pushbroom Imaging Spectrometer (PIS) developed by us, a wavelet-based threshold denoising method was developed for its hyperspectral imagery data. And its capacity was evaluated through comparing with other popular denoising methods in pixel scale and in region scale. Furthermore, the method was validated in chlorophyll concentration retrieval application based on its red-edge extraction. The result revealed that the determination coefficient R2 of chlorophyll concentration retrieval model was improved from 0.586 to 0.811. It showed that the proposed denoising method allowed efficient denoising while maintaining image quality, and presented significant advantages over conventional denoising methods.
	TO cite this article:YANG Hao,ZHANG Dongyan,HUANG Linsheng, et al. Wavelet-based denoising of spectral domain for hyperspectral Images[J].


	6. Sedum alfredii- A promising Zinc hyperaccumulator: Character, mechanism and application
	Gao Jun,Feng Ying,Zhang Min,Lu Ling-Li,Li Tingqiang,He Zhenli,Yang Xiaoe
	Agronomy 26 December 2013
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	Abstract:Backgroud :Previous research on Zinc (Zn) hyperaccumulation was mainly focused on Noccaeacaerulescens and Arabidopsis halleri. Information on other Zn hyperaccumulators, especially non-Brassicaceae, is essential to better understand Zn hyperaccumulation mechanisms and their application potential for soil remediation.. Scope: Sedum alfredii is a Crassulaceae Zn hyperaccumulator. In this paper, the hyperaccumulation and tolerance ability of sedum plants and Sedum alfredii populations were compared. The major mechanisms of Zn hyperaccumulation in S. alfredii were discussed with respect torhizosphere process, transport mechanisms, accumulation, and detoxification, as well as molecular basis. Finally, phytoextraction of Zn by S. alfredii and the feasible post-harvest treatments of shoot biomass were reviewed. Conclusion: Zinc hyperaccumulation in S. alfredii is not a species constitutive trait. Hyperaccumulating ecotype (HE) S. alfredii possesses a root foraging mechanism and an altered Zn transport system to increase root uptake and subsequent translocation to shoot. A complex interaction of microbes, plant, and environment occurs in the rhizosphere that facilitate Zn hyperaccumulation. The accumulated Zn is mainly sequestered into inactive sites. Compared with N. caerulescens and A. halleri, S. alfredi inot only provide valuable information on metal hyperaccumulation, but holds a greater promise for application in phytoextraction at a large field scale .
	TO cit

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