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Journal of Integrative Agriculture 2019年第4期18卷 797-804页

作者： LU Yan-hui zheng xu-song LU Zhong-xian State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences

Rice is an important staple food in China and it is at risk of attack by rice striped stem borer Chilo suppressalis, which occurs in most rice growing areas. In recent years, severe C. suppressalis outbreaks have been observed in China mainly due to changes in the rice cultivation systems, wide adoption of hybrid varieties and resistance to the dominant insecticides. Management relies primarily on chemical insecticides and resistance is an important contributing factor in these outbreaks. As a result, food safety of agricultural produce is reduced and the ecological and environmental integrities are threatened as well. Recently, environmentally friendly pest management measures, such as trap plants have been introduced for C. suppressalis management and this method can greatly reduce insecticide use. Our previous results indicated that the vetiver grass(Vetiveria zizanioides) is a dead-end trap plant that can effectively attract the adult females of C. suppressalis to lay eggs on it but where larvae are unable to complete their life cycle. This paper further explored the application of vetiver grass as a trap plant to manage C. suppressalis in the paddy fields. This environment-friendly tool can not only reduce C. suppressalis populations, it can also increase the diversity and abundance of natural enemies that can provide better environmental conditions for rice production.

关键词： rice vetiver trap plants Chilo suppressalis control application

Electrophysiological responses of the rice striped stem borer Chilo suppressalis to volatiles of the trap plant vetiver grass (Vetiveria zizanioides L.)

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Journal of Integrative Agriculture 2017年第11期16卷 2525-2533页

作者： LU Yan-hui LIU Kai zheng xu-song Lü Zhong-xian State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences Hangzhou 310021 P.R. China

Vetiver grass （Vetiveria zizanioides L.） was previously found to effectively attract female adults of Chilo suppressalis （Walker）, an important pest of rice. To determine the volatile compounds involved in this attraction, electroantennography （EAG） responses to seven synthetic volatiles released from vetiver plants were examined. Our results indicated that the responses of C. suppressalis adult antennae to the different compounds varied widely. The compounds elicited strong EAG responses in female antennae were subsequently selected for further EAG response tests, namely, caryophyllene, β-ocimene, linalool and a-pinene. EAG responses to a combination of these four compounds did not differ significantly from the individual compounds. However, pair combination tests indicated that 0.01μg μL-1linalool and 50 μg μL-1 α-pinene, 50 μgμL-1 caryophyllene and 0.01μg μL-1 linalool, 0.01 μg μL-1 13-ocimene and 0.01 μg μL-1 linalool, and 0.01μg μL-1 β-ocimene and 50 μg μL-1 caryophyllene elicited significantly greater EAG responses in 3-day female moths compared to the 1-day female. These compound combinations and the corresponding ratios are probably playing an important role in attracting female adults of C. suppressalis to the vetiver grass.

关键词： Chilo suppressalis electroantennography (EAG) volatiles vetiver grass trapping mechanism attraction

Influence of Temperature on Symbiotic Bacterium Composition in Successive Generations of Egg Parasitoid, Anagrus nilaparvatae

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Rice science 2016年第4期23卷 203-210页

作者： WANG Xin xu Hong-xing LIU Shu-ping TANG Jiang-wu zheng xu-song LV Zhong-xian State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences

Anagrus nilaparvatae is the dominant egg parasitoid of rice planthoppers and plays an important role in biological control. Symbiotic bacteria can significantly influence the development, survival, reproduction and population differentiation of their hosts. To study the influence of temperature on symbiotic bacterial composition in the successive generations of A. nilaparvatae, A. nilaparvatae were raised under different constant temperatures of 22 °C, 25 °C, 28 °C, 31 °C and 34 °C. Polymerase chain reaction-denaturing gradient gel electrophoresis was used to investigate the diversity of symbiotic bacteria. Our results revealed that the endophytic bacteria of A. nilaparvatae were Pantoea sp., Pseudomonas sp. and some uncultured bacteria. The bacterial community composition in A. nilaparvatae significantly varied among different temperatures and generations, which might be partially caused by temperature, feeding behavior and the physical changes of hosts. However, the analysis of wsp gene showed that the Wolbachia in A. nilaparvatae belonged to group A, sub-group Mors and sub-group Dro. Sub-group Mors was absolutely dominant, and this Wolbachia composition remained stable in different temperatures and generations, except for the 3rd generation under 34 °C during which sub-group Dro became the dominant Wolbachia. The above results suggest that the continuous high temperature of 34 °C can influence the Wolbachia community composition in A. nilaparvatae.

关键词： temperature Anagrus nilaparvatae Wolbachia bacterial community polymerase chain reaction-denaturing gradient gel electrophoresis rice brown planthopper

Sustainable Management of Rice Insect Pests by Non-Chemical-Insecticide Technologies in China

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Rice science 2017年第2期24卷 61-72页

作者： xu Hong-xing YANG Ya-jun LU Yan-hui zheng xu-song TIAN Jun-ce LAI Feng-xiang FU Qiang LU Zhong-xian Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and MicrobiologyZhejiang Academy of Agricultural SciencesHangzhou 310021China China National Rice Research Institute Hangzhou 310006China

Chemical pesticides play crucial roles in the management of crop diseases and pests. However, excessive and irrational use of pesticides has become a major concern and obstacle to sustainable agriculture. As a result, the quality and security of agricultural products are reduced, and the ecological and environmental integrities are threatened. Recently, environment-friendly pest management measures have been introduced and adopted to manage rice insect pests and reduce the use of insecticides. This paper reviewed the advancements in development and application of non-chemical technologies for insect pest management during rice production in China.

关键词： rice chemical insecticide reduce insecticide non-chemical pest management ecological and environmental integrity

High Temperature Modifies Resistance Performances of Rice Varieties to Brown Planthopper,Nilaparvata lugens(Stl)

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Rice science 2010年第4期17卷 334-338页

作者： WANG Bao-ju xu Hong-xing zheng xu-song Fu Qiang Lu Zhong-xian Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences Itangzhou 310021 China School of Life and Environment Science Hangzhou Normal University Hangzhou 310036 China China National Rice Research Institute Hangzhou 310006 China

To investigate the effect of temperature on the resistance characteristics of dce varieties with different resistance genes to brown planthopper （BPH）, Nilaparvata lugens （Stal）, the resistances of IR26 （Bphl） and IR36 （bph2） to BPH population in Hangzhou, China were monitored in greenhouse during September in 2007 and 2008 by using the standard seedling screening techniques （SSST） developed by the International Rice Research Institute （IRRI）. Furthermore, the changes in resistance of IR26 and IR36 to BPH, soluble sugar and oxalic acid contents in 25-day-old rice plants of susceptible variety TN1 and resistant varieties IR26 and IR36 were detected at five temperatures （22℃, 25℃, 28℃, 31℃ and 34℃）. IR26 completely lost resistance both in greenhouse and at the five tested temperatures. IR36 still had moderate resistance at natural temperature, but its resistance decreased gradually when the temperature increased from 25℃ to 34℃, and fully lost its resistance at 31℃ and 34℃. The highest durable resistance of IR26 and IR36 were recorded at 25℃. The soluble sugar content in plants of the three tested rice varieties increased with temperature increase, and the oxalic acid content increased with the temperature increase at first, maximized at 25℃, and then declined. Two-way ANOVA indicated significant effects of temperature and rice variety on contents of soluble sugar and oxalic acid in rice plants

关键词： brown planthopper Nilaparvata lugens temperature rice resistant characteristics

Bacterial Community in Different Populations of Rice Brown Planthopper Nilaparvata lugens(Stl)

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Rice science 2014年第1期21卷 59-64页

作者： xu Hong-xing zheng xu-song YANG Ya-jun WANG Xin YE Gong-yin LU Zhong-xian Institute of Insect Science Zhejiang University State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences

The structures of bacterial communities in the brown planthopper （BPH） Nilaparvata lugens （St^l） from different geographic and resistant virulent populations were analyzed by using denatured gradient gel electrophoresis （DGGE）. Results showed that the bacterial communities in BPH nymph from the first to the fifth instars varied with nymphal growth and development. The bacterial communities in the first-instar BPH nymph were similar to those in adults. Nine geographic BPH populations were divided into three groups based on the cluster analysis of DGGE fingerprint. The first group was from the Philippines; the second group was from Thailand and Hainan, Yunnan and Zhejiang provinces of China; and the third group was from Vietnam and Guangxi, Hunan and Jiangxi provinces of China. BPH populations adapted to different resistant rice varieties. The BPH populations from Mudgo （with resistant gene Bphl） and ASD7 （with resistant gene bph2） differed with those of the susceptible rice variety TNI.

关键词： brown planthopper endosymbiont bacterial community geographic population virulence resistant variety

Susceptibility to Insecticides and Ecological Fitness in Resistant Rice Varieties of Field Nilaparvata lugens Stl Population Free from Insecticides in Laboratory

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Rice science 2014年第3期21卷 181-186页

作者： YANG Ya-jun DONG Bi-qin xu Hong-xing zheng xu-song K.L.HEONG LU Zhong-xian State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control Institute of Plant Protection and MicrobiologyZhejiang Academy of Agricultural Sciences College of Chemistry and Life Science Zhejiang Normal University CABI South East Asia PO Box 210 UPM SerdangMalaysia

A population of rice brown planthopper （BPH） Nilaparvata lugens collected from a paddy field in Hangzhou was successively reared on susceptible rice Taichung Native 1 （TN1） in a laboratory free from insecticides for more than 14 generations. The changes in susceptibility to insecticides and ecological fitness on different resistant rice varieties were monitored in each generation. The resistance ratio to imidacloprid sharply declined with the succession of rearing generations without insecticides from 359.94-fold at F1 to 6.50-fold at F14 compared with the susceptible strain, and the resistance ratio to chlorpyrifos was from 9.90-fold at F1 to 5.94-fold at F14. Nymphal duration and weights of newly hatched female adults were significantly affected by rice variety, generation and their interactions, but nymphal survival was significantly affected by the generation only. The ratio of brachypterous adults in males was affected by the generation and generation × variety interaction, whereas no difference was found in females. Nymphal duration extended with increasing generations, and the female nymphal duration was shorter in the susceptible variety TN1 than those in the resistant varieties IR26 and IR36. In addition, the female adult weight in TN1 was higher than those in IR26 and IR36. These results indicated that the resistance of field BPH population to insecticides was reversed after several generations of no-exposure to insecticides, and the ecological fitness in TN1 was higher than those in IR26 and IR36. These findings suggested the rational and reduced use of insecticides in combination with the manipulation of resistant rice varieties would be effective for BPH management.

关键词： Nilaparvata lugens insecticide-free ecological fitness insecticidal resistance rice variety

Ecological Fitness of Non-vector Planthopper Sogatella furcifera on Rice Plants Infected with Rice Black Streaked Dwarf Virus

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Rice science 2012年第4期19卷 335-338页

作者： HE Xiao-chan xu Hong-xing zheng xu-song YANG Ya-jun GAO Guang-chun PAN Jian-hong LU Zhong-xian Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences Department of Plant Protection Nanjing Agricultural University

We evaluated the effects of rice black streak dwarf virus （RBSDV）-infested rice plants on the ecological parameters and its relevant defensive and detoxification enzymes of white-backed planthopper （WBPH） in laboratory for exploring the relationship between RBSDV and the non-vector planthopper. The results showed that nymph survival rate, female adult weight and fecundity, and egg hatchability of WBPH fed on RBSDV-infested rice plants did not markedly differ from those on healthy plants, whereas the female adult longevity and egg duration significantly shortened on diseased plants. Furthermore, significantly higher activities of defensive enzymes （dismutase, catalase and peroxidase） and detoxification enzymes （acetylcholinesterase, carboxylesterase and glutathione S-transferase） were found in WBPH adults fed on infected plants. Results implied that infestation by RBSDV increased the ecological fitness of non-vector planthopper population.

关键词： ecological fitness rice black streaked dwarf virus non-vector white-backed planthopper

Growth and Reproduction of Artificially Fed Cnaphalocrocis medinalis

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Rice science 2012年第3期19卷 247-251页

作者： xu Jian LI Chuan-ming YANG Ya-jun QI Jian-hang zheng xu-song Hu Rong-li Lu Zhong-xian LIU Qin Jiangsu Lixiahe Institute of Agricultural Science Yangzhou 225007 China Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Science Hangzhou 310021 China

The growth and reproduction of rice leaffolder,Cnaphalocrocis medinalis,fed on an artificial diet were *** results showed that the larvae were able to grow and pupate on the artificial *** durations of larvae and pupas of *** on the artificial diet were 28.1 d and 10.1 d,postponed 4.9 d and 1.7 d respectively,compared with those reared with rice *** number of ovipositions was 41.6 per female,26.2% higher than that fed on rice *** rate curve of larvae was a descent function of mortality-age,with no significant differences from the curve of larvae fed on rice *** net reproductive rate （Ro）,intrinsic rate of increase （rm） and finite rate of increase （λ） of the population fed on diet were 17.6928,0.0884 and 1.0924,respectively,and the mean generation time （T） and double time （td） were prolonged 4.9 d and 1.3 d in comparison with the treatment of rice *** trend index （I） was 3.26,indicating a growing number of the population of *** fed on artificial diet.

关键词： Cnaphalocrocis medinalis artificial diet experimental population growth reproduction

Pyroptosis,ferroptosis,and autophagy in spinal cord injury:regulatory mechanisms and therapeutic targets

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Neural Regeneration Research 2025年第10期20卷 2787-2806页

作者： Qingcong zheng Du Wang Rongjie Lin Weihong xu Department of Spinal Surgery the First Affiliated Hospital of Fujian Medical UniversityFuzhouFujian ProvinceChina Arthritis Clinical and Research Center Peking University People’s HospitalBeijingChina Department of Orthopedic Surgery Fujian Medical University Union HospitalFuzhouFujian ProvinceChina

Regulated cell death is a form of cell death that is actively controlled by *** studies have shown that regulated cell death plays a key role after spinal cord *** and ferroptosis are newly discovered types of regulated cell deaths that have been shown to exacerbate inflammation and lead to cell death in damaged spinal ***,a complex form of cell death that is interconnected with various regulated cell death mechanisms,has garnered significant attention in the study of spinal cord *** injury triggers not only cell death but also cellular survival *** signaling pathways play pivotal roles in influencing the processes of both deterioration and repair in spinal cord injury by regulating pyroptosis,ferroptosis,and ***,this review aims to comprehensively examine the mechanisms underlying regulated cell deaths,the signaling pathways that modulate these mechanisms,and the potential therapeutic targets for spinal cord *** analysis suggests that targeting the common regulatory signaling pathways of different regulated cell deaths could be a promising strategy to promote cell survival and enhance the repair of spinal cord ***,a holistic approach that incorporates multiple regulated cell deaths and their regulatory pathways presents a promising multi-target therapeutic strategy for the management of spinal cord injury.

关键词： autophagy cell death ferroptosis inflammation pathological mechanisms pyroptosis regulated cell death regulatory pathways spinal cord injury therapeutic targets