Suzhou Polytechnical Institute of Agriculture

Suzhou, China

Suzhou Polytechnical Institute of Agriculture

Suzhou, China
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Zhu X.-D.,Nanjing Agricultural University | Zhu X.-D.,Suzhou Polytechnical Institute of Agriculture | Tian S.-Q.,Suzhou Polytechnical Institute of Agriculture | Huang S.-Z.,Nanjing Agricultural University | And 2 more authors.
Fresenius Environmental Bulletin | Year: 2014

The effects of lead (Pb) on seedling development and subcellular structures, as well as Pb localization in the root tip cells of Louisiana iris 'Professor Neil' were examined using a nutrient solution culture containing 0-800 mg/L Pb supplied as Pb(N03)2 for 28 days. The root length, shoot height, root number, leaf number, and dry weight of roots and leaves of Louisiana iris 'Professor Neil' gradually decreased as Pb levels increased, and the largest decrease in root length, shoot height, root number, leaf number, and dry weight of roots and leaves was observed under the 800 mg/L Pb treatment. The index of tolerance (IT) values gradually decreased as Pb levels increased, and the IT value was 60% of the control in the presence of 800 mg/L Pb. The subcellular structures of root and leaf cells exposed to 800 mg/L Pb were partially destroyed. Pb deposits in root cells treated with 800 mg/L Pb were observed in the intercellular space and cell walls. These results indicated that Louisiana iris 'Professor Neil' is a tolerant cultivar that can be used for the phytoremediation of contaminated environments. © by PSP.

Gu C.-S.,CAS Institute of Botany | Liu L.-Q.,Nanjing Agricultural University | Zhu X.-D.,Suzhou Polytechnical Institute of Agriculture | Zhang Y.-X.,CAS Institute of Botany | Huang S.-Z.,CAS Institute of Botany
Fresenius Environmental Bulletin | Year: 2015

I. lactea var. chinensis is tolerant to and accumulates cadmium (Cd), lead (Pb) and salt. The purpose of the study was to disclose the chromium(VI) impact on I. lacteavar. chinensis, and it was treated with 25 and 100 |imol Cr(VI) for 4 and 8 days, respectively. The dry weight and relative water content of shoots decreased gradually as chromium concentration increased. However, superoxide dismutase (SOD) activity, malondialdehyde (MDA) content, and proline content increased whereas there was a progressive drop in chlorophyll content in both chromium treatments under both concentrations. Using electron microscopy, we observed that chloroplast shape, starch grain number and grana arrangement were all changed by chromium. Our findings provided new insights into the mechanism of chromium tolerance in Iris plants.

Tian S.,CAS Institute of Botany | Tian S.,Suzhou Polytechnical Institute of Agriculture | Gu C.,CAS Institute of Botany | Liu L.,Nanjing Agricultural University | And 4 more authors.
International Journal of Molecular Sciences | Year: 2015

Louisiana iris is tolerant to and accumulates the heavy metal lead (Pb). However, there is limited knowledge of the molecular mechanisms behind this feature. We describe the transcriptome of Louisiana iris using Illumina sequencing technology. The root transcriptome of Louisiana iris under control and Pb-stress conditions was sequenced. Overall, 525,498 transcripts representing 313,958 unigenes were assembled using the clean raw reads. Among them, 43,015 unigenes were annotated and their functions classified using the euKaryotic Orthologous Groups (KOG) database. They were divided into 25 molecular families. In the Gene Ontology (GO) database, 50,174 unigenes were categorized into three GO trees (molecular function, cellular component and biological process). After analysis of differentially expressed genes, some Pb-stress-related genes were selected, including biosynthesis genes of chelating compounds, metal transporters, transcription factors and antioxidant-related genes. This study not only lays a foundation for further studies on differential genes under Pb stress, but also facilitates the molecular breeding of Louisiana iris. © 2015 by the authors; licensee MDPI, Basel, Switzerland.

Ni Y.,Suzhou Polytechnical Institute of Agriculture | Ni Y.,Soochow University of China | Wu L.,Suzhou Polytechnical Institute of Agriculture | Wu L.,Soochow University of China | And 4 more authors.
Communications in Theoretical Physics | Year: 2011

Bistable behavior of neuronal complex networks is investigated in the limited-sustained-activity regime when the network is composed of excitatory and inhibitory neurons. The standard stability analysis is performed on the two metastable states separately. Both theoretical analysis and numerical simulations show consistently that the difference between time scales of excitatory and inhibitory populations can influence the dynamical behaviors of the neuronal networks dramatically, leading to the transition from bistable behaviors with memory effects to the collapse of bistable behaviors. These results may suggest one possible neuronal information processing by only tuning time scales. © 2011 Chinese Physical Society and IOP Publishing Ltd.

Yang W.,Suzhou Polytechnical Institute of Agriculture | Yang W.,Soochow University of China | Ren Z.-G.,Soochow University of China | Bian G.-Q.,Soochow University of China | And 2 more authors.
Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences | Year: 2010

Reaction of Au(PPh3)Cl with MET-TTF in the presence of air resulted in a new charge-transfer salt [AuCl2(DDDT)](MET-TTF) (1, DDDT = 5,6-dihydro-1,4-dithiin-2,3-dithiolate, MET-TTF = bis(methylthio) ethylenedithiotetrathiafulvalene). During the air-induced reaction, the Au(I) is oxidized to Au(III), while two C-S bonds in MET-TTF were cleaved simultaneously. In the crystal the radical cations in 1 are assembled into a 1D structure by intermolecular S ⋯ S, S ⋯C, and C ⋯C contacts. © 2010 Verlag der Zeitschrift für Naturforschung, Tübingen.

Ni Y.,Suzhou Polytechnical Institute of Agriculture | Wu L.,Suzhou University | Zhu S.Q.,Suzhou University | Huang Y.,Suzhou University
European Physical Journal D | Year: 2010

The propensity for synchronisation of weighted and asymmetrical networks is investigated. The weighting scheme is employed when connection strengths are weighted according to local information. The weighting schemes of different level of information restriction are compared. It is found that the optimal network synchronisability is obtained when the weighting scheme is based on softly restricted information. It is even better than schemes based on global information. This implies that "more knowledge, better network synchronisability" is not always true. This is mainly due to a partial synchronisation phenomenon taking place at a cluster level. The finding may be helpful to gain a better understanding of why synchronisation is widely observed in many real large-scale systems while each node is aware of limited information about only a small part of a network. © 2009 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

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