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Resistance analysis of the rice variety Huaidao 5 against root-knot nematode Meloidogyne graminicola

Journal of Integrative Agriculture 2023年第10期22卷 3081-3089页

作者： FENG Hui ZHOU Can-rong ZHU Feng LE Xiu-hu JING De-dao Paul DALY ZHOU Dong-mei WEI Li-hui Institute of plant protection Jiangsu Academy of Agricultural SciencesNanjing 210014P.R.China plant protection and quarantine station of Jiangsu province Nanjing 210009P.R.China School of Landscape and Ecological Engineering Hebei University of EngineeringHandan 056038P.R.China Zhenjiang Institute of Agricultural Science in Hilly Area of Jiangsu province Jurong 212400P.R.China

Meloidogyne graminicola has emerged as one of the most destructive plant-parasitic nematodes affecting rice(Oryza sativa)production *** to *** in rice could be the most effective option for its ***,sources of germplasm with resistance to *** in rice remain ***,we describe the root attraction,gall formation and genetic analysis of the resistance to *** in the rice variety Huidao 5.A nematode attraction assay showed that second-stage juveniles(J2s)of *** were attracted at the root tip of Huaidao 5 within 8 h without a significant reduction in attraction compared to the susceptible rice variety Nanjing *** observation of the infection revealed that the J2s invaded root tissues 12 h after inoculation,but their subsequent movement to the root tip was hindered in Huaidao 5,resulting in decreased nematode number compared to Nanjing ***,we used the soil and hydroponic culture systems to simulate upland and flooding conditions in the paddy fields respectively,and found that gall number was significantly reduced,and nematode development was clearly suppressed in Huaidao *** investigate the genetic basis of this resistance,cross breeding was performed between the Huaidao 5 and Nanjing 9108 *** was no reduction in the resistance of the F_(1) offspring to *** in the greenhouse or field trials,suggesting that a dominant gene could control resistance in Huaidao *** summary,this study provides a detailed characterization of a novel source of resistance to *** in rice,which is of great potential for use in crop breeding.

关键词： root-knot nematode Meloidogyne graminicola rice resistance

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Seed size affects rodent–seed interaction consistently across plant species but not within species:evidence from a seed tracking experiment of 41 tree species

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Integrative Zoology 2022年第5期17卷 930-943页

作者： Si CHEN Li FENG Bo WANG School of Resources and Environmental Engineering Anhui UniversityHefeiAnhui ProvinceChina Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan ProvinceChina Ailaoshan station of Subtropical Forest Ecosystem Studies Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesJingdongYunnan ProvinceChina Anhui province Key Laboratory of Wetland Ecosystem protection and Restoration(Anhui University) HefeiAnhui ProvinceChina

Scatter-hoarding rodents play a crucial role in seed survival and seed *** one of the most important seed traits,seed size and its effect on rodent–seed interaction attract lots of *** studies usually target one or a few species and show inconsistent patterns;however,few experiments include a large number of species although many plant species usually coexist in natural forest and overlap in fruiting ***,we tracked the dispersal and predation of 26100 seeds belonging to 41 tree species in a subtropical forest for 2 *** species showed no relationships between seed size and rodent foraging preference,while the remaining species displayed diverse of patterns:monotonic decrease and increase trends,and hump-shaped and U-shaped patterns,indicating that a one-off study with a few species might give misleading ***,the seed size effect across species was consistent in both years,indicating that including a large number of species that hold a sufﬁcient range of seed size may avoid the aforementioned ***,seed size effect differed among rodent foraging processes:a negative effect on seed harvest,a hump-shaped effect on seed removal and removal distance,while a positive effect on overwinter survival of cached seeds,indicating that rodents may make trade-offs between large and small seeds both among foraging processes and within a single process,thus lead to a parabolic relationship between seed size and seed dispersal success,that is medium-sized seeds were more likely to be removed and cached,and transported with a further distance.

关键词： foraging preference plant–animal interaction scatter-hoarding seed dispersal seed predation

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Integrated transcriptome and metabolite profiling highlights the role of benzoxazinoids in wheat resistance against Fusarium crown rot

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The Crop Journal 2022年第2期10卷 407-417页

作者： Shuonan Duan Jingjing Jin Yutian Gao Changlin Jin Junyi Mu Wenchao Zhen Qixin Sun Chaojie Xie Jun Ma College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China Institute of Genetics and Physiology Hebei Academy of Agriculture and Forestry SciencesShijiazhuang 050051HebeiChina College of Agronomy Hebei Agricultural UniversityBaoding 071001HebeiChina Hebei plant protection and quarantine General station Shijiazhuang 050051HebeiChina

Fusarium crown rot(FCR), caused by Fusarium spp., is a chronic and severe plant disease worldwide. In the last years, the incidence and severity of FCR in China has increased to the point that it is now considered a threat to local wheat crops. In this study, for the first time, the metabolites and transcripts responsive to FCR infection in the partial resistant wheat cultivar 04 Zhong 36(04 z36) and susceptible cultivar Xinmai 26(XM) were investigated and compared at 20 and 25 days post inoculation(dpi). A total of 443 metabolites were detected, of which 102 were significantly changed because of pathogen *** of these 102 metabolites belonged to the flavonoid, phenolic acid, amino acid and derivative *** metabolites, such as proline betaine, lauric acid, ribitol, and arabitol, were stably induced by Fusarium pseudograminearum(Fp) infection at two time points and may have important roles in FCR resistance. In line with the reduced seedling height of 04 z36 and XM plants, RNA-seq analysis revealed that FCR infection significantly affected the photosynthesis activities in two cultivars. Furthermore, 15 jasmonate ZIM-domain genes(JAZ) in the significantly enriched ‘regulation of jasmonic acid mediated signaling pathway’ in 04 z36 were down-regulated. The down-regulation of these JAZ genes in 04 z36 may cause a strong activation of the jasmonate signaling pathway. Based on combined data from gene expression and metabolite profiles, two metabolites, benzoxazolin-2-one(BOA) and 6-methoxy-benzoxazolin-2-one(MBOA), involved in the benzoxazinoid-biosynthesis pathway, were tested for their effects on FCR resistance. Both BOA and MBOA significantly reduced fungal growth in vitro and in vivo, and, thus, a higher content of BOA and MBOA in 04 z36 may contribute to FCR resistance. Above all, the current analysis extends our understanding of the molecular mechanisms of FCR resistance/susceptibility in wheat and will benefit further efforts for the genetic imp

关键词： Fusarium crown rot Wheat Metabolites Transcript Benzoxazinoid

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Association of host plant growth and weed occurrence with armyworm(Mythimna separata) damage in corn fields

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Journal of Integrative Agriculture 2018年第7期17卷 1538-1544页

作者： ZHANG Kun-peng YU Zhi-hao JIANG Shi-xiong SUN De-wen HUI Jun-tao ZHENG Yu-liang LI Xiao-zhen WANG Xing-yun WU Jun-xiang State Key Laboratory of Crop Stress Biology in Arid Areas/College of plant protection Northwest A&F UniversityYangling 712100P.R.China Anyang Institute of Technology Anyang 455000P.R.China plant protection and quarantine station of Sanyuan County Sanyuan 713800P.R.China plant protection and quarantine station of Lantian County Lantian 710500P.R.China plant protection and quarantine station of Chang'an District Chang'an 710100P.R.China Zhengping plant protection Technology Limited Company Xi'an 710000P.R.China

To clarify association between armyworm（Mythimna separata） damage level and the corn growth and weed occurrence, we investigated corn plant height, stem diameter and vigor as well as weed coverage and biomass. The investigations were conducted at three locations of Shaanxi province, China which were suffered seriously from armyworm. Significant correlations were found between the parameters analyzed. At stunted corn growth and presence of plenty of weeds, the armyworm damage tended to be heavy; oppositely, when corn grew well and weed density were low, armyworm harm was the minimal. Therefore, corn growing status and weed density can significantly affect armyworm damage level. Our results imply that promoting corn growth and timely removal of weeds are conducive to reducing armyworm occurrence.

关键词： Mythimna separata damage degree corn growth corn field weeds

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Causes of Recurrence of Rice Chilo suppressalis( Walker) in Longyou County and Prevention and Control Measures

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Asian Agricultural Research 2019年第2期11卷 111-113,116页

作者： Ying WANG Yong ZHANG Chenguang ZHANG Runzhong LOU Xinxin XU Xiaowei XU Longyou County plant protection and quarantine station of Zhejiang province Quzhou City plant protection and quarantine station of Zhejiang province

In recent years,the occurrence of rice Chilo suppressalis( Walker) in Longyou County of Zhejiang province has increased year by year and has become aggravated. This poses a great threat to the safety of rice production. In order to curb the recurrence momentum of rice C. suppressalis,according to the dynamic monitoring and field system survey of rice C. suppressalis in Longyou County since 2015,the causes of the annual increase of rice C. suppressalis in recent years were analyzed,and the recurrence area of C. suppressalis was introduced,and finally some prevention and control measures were put forward.

关键词： Chilo suppressalis (Walker) Causes of recurrence Prevention and control measures

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Tolerance of Adult Guava Fruit Fly Bactrocera(Bactrocera) correcta(Bezzi)(Diptera: Tephritidae) to Low Temperature

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plant Diseases and Pests 2015年第3期6卷 30-32页

作者： Zhu Lingling Dou Qinchuan Yao Wanfu Liu Xiaofei Ye Hui yunnan University Yuanjiang plant protection & quarantine station

Temperature plays a vital role in development, survival mad reproduction of Tephritidae species and other insects. Recent research demonstrates tempera- ture is a crucial factor influencing population fluctuation and geographical distribution of Bactrocera （Bactrocera） *** （Bezzi）. The adult stage of li. correcta, with apparent Aliapanse＇, was considered to be the most important life stage to overcome lower temperature. According to this biological feature, the survival rate of adult B. correcta which were exposed to low temporature （0, 3, 6, 9℃） for ditferont durations （1, 3, 6, 12, 24, 48, 72, 96, 120 h） was studied. The results showed that this fruit fly could not survive at 0 ℃ over 24 h. When exposed to 0 ℃ for 12 h, the survival rate was lower than 40%. The survival rate was higher than 60% when the adults were exposed to 3 ℃ for 24 h. More than 50% of adult B. correcta could survive for 48 h at 6 ℃. This fruit fly had a stronger tolerance at 9 ~C for 72 h, with the adult survival rate higher than 80%. The results are useful for prediction of occurrence and gcographiead distribution of B. correcta, which helps in developing better management strategies for this important insect pest.

关键词： 8actrocera correcta(tlezzi) Iow temperature Adult survival rate

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Population Dynamics and Control of Chionaspis subcorticalis Green

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plant Diseases and Pests 2012年第1期3卷 30-32页

作者： LI Yong-mei LUO Rong ZHAN Qing-quan FAN Gui-ping yunnan plant protection and quarantine station Kunming 650034China Yuxi plant protection and quarantine station Yuxi 653100China Eshan plant protection and quarantine station Eshan 653200China

[Objective] The paper was to study the population dynamics and agent control effect against Chionaspis subcorticalis Green. [Method] The population dynamics of C. subcorticalis in Ganzhuang of Yuanjiang County in yunnan province were investigated, 750 and 1 500 times liquid of buprofezin and 1 000 times liquid of methidathion were used to control C. subcorticalis. [Result] It was the main spawning period of C. subcorticalis in Ganzhuang from the end of March to the middle of April, 1 000 times liquid of methidathion had the best integrated control effect against C. subcorticalis. [Conclusion] The proper control period against C. subcorticalis in Ganzhuang was from the end of March to the middle of April, and methidathion could be selected to control the pest.

关键词： Chionaspis subcorticalis Green Population dynamics Control China

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First report of Heterodera zeae and Heterodera elachista in Henan province of China

First report of Heterodera zeae and Heterodera elachista in ...

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中国植物病理学会2021年学术年会

作者： ZHOU Bo Jiao Yongji LV Yan LU Junfeng CHEN Kunyuan REN Haohao MENG Haoguang JIANG Shijun CUI Jiangkuan College of plant protection Henan Agricultural University plant protection and plant quarantine station of Henan province Xuchang plant protection and plant quarantine station

In order to define types and distribution of cyst nematodes in Henan province,the staple crops were sampled from November 2017 to September *** of cyst nematodes were isolated from soil samples of corn fields in Yuzhou City and Huangchuan County by simple floatation *** identification of cysts isolated from soil samples in Yuzhou and Huangchuan showed that they were similar to Heterodera zeae and Heterodera elachista,*** the primer TW81/AB28 to amplify cyst nematodesr DNA-ITS sequence,NCBI BLAST alignment analysis found that they had 99% sequence homology with ***（GU145613.1,GU145615.1 and KU922122.1） and ***（MN720080.1,JN864884.1,JN202916.1）.The above results indicate that the population of cyst nematode in Yuzhou City,Henan province is corn cyst *** is the first discovery of *** and *** in Henan *** is of great significance to study the occurrence and distribution of *** and *** in China.

关键词： Heterodera zeae Heterodera elachista morphological identification molecular identification

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Daily expression of two circadian clock genes in compound eyes of Helicoverpa armigera: evidence for peripheral tissue circadian timing

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Insect Science 2019年第2期26卷 217-228页

作者： Shuo Yan Yan-Jun Liu Jia-Lin Zhu Wei-Na Cui Xin-Fang Zhang Yu-Hui Yang Xiao-Ming Liu Qing-Wen Zhang Xiao-Xia Liu Department of Entomology China Agricultural University Beijing China National Agricultural Technology Extension and Service Center Beijing China Beijing Entry-Exit Inspection and quarantine Bureau Beijing China Zoucheng plant protection station Zoucheng Shandong Province China Changli Institute of Pomology Hebei Academy of Agriculture and Forestry Sciences Changli Hebei Province China

Circadian clock genes in peripheral tissues usually play an important role in regulating the circadian rhythms. Light is the most important environmental signal for synchronizing endogenous rhythms with the daily light-dark cycle, and compound eyes are known as the principal circadian photoreceptor for photic entrainment in most moths. However, there is little evidence for circadian timing in compound eyes. In the current study, we isolated the timeless gene, designated Ha-tim (GenBank accession number: KM233162), from the cotton bo 11 worm Helicoverpa armigera. Ha-tim and period (Haper) showed low messenger RNA levels in the compound eyes compared to the other tested adult organs. Ha-tim and Ha-per transcript levels were dependent on an endogenous rhythm that fluctuated over a daily cycle in the compound eyes and heads. The cycles of Hatim and Ha-per transcript levels followed similar time courses, and identical expression patterns of the two genes were observed in the compound eyes and heads. Ha-tim and Ha-per were dowregulated in the compound eyes after light exposure, copulation and starvation. These results indicated that Ha-tim and Ha-per transcript levels were regulated by endogenous and exogenous factors. Our study helped to improve our understanding of the circadian clock machinery in compound eyes and other peripheral tissues.

关键词： circadian clock compound eye photoreceptor period timeless rhythm

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Occurrence and Epidemic Regularity of Wheat Stripe Rust in Nanchong City of Sichuan province

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plant Diseases and Pests 2015年第6期6卷 17-23页

作者： Peng Changjia Bai Tikun Feng Libin Ding Pan Yang Yuheng Nanchong plant protection and quarantine station College of plant protection Southwest University

In order to realize monitoring and early warning and comprehensive management of wheat stripe rust and to reduce its occurrence in Nanchong City, the occurrence and epidemic regularity of wheat stripe rust in Nanchong was studied by system monitoring and general survey, resistance identification, physiological race monitoring and meteorological data analysis. The initial occurrence location and spreading pathway of Puccinia striiformis f. sp. tritici （Pst） were first verified; there were two infection peaks of wheat stripe rust in Nanchong and one to three epidemic peaks in fields, in which the occurrence area of the first epidemic peak played a pivotal role in disease prevalence in that year; the cumulative occurrence area in late January was positively correlated with annual occurrence area, with the correlation coefficient of 0.769 ; the prediction model for infected field rate, diseased plant rate and annual occurrence area was established. The internal reason for heavy occurrence and prevalence of wheat stripe rust in Nanchong was the decline or loss of wheat resistance against stripe rust, as well as the appearance of physiological races of Pst, which later became dominant races. Large fluctuation of temperature in warm winter and spring and more fog and dew days were external reasons responsible for prevalence of stripe rust. From 2002 to 2014 ,the accuracy rate of short-term prediction of wheat stripe rust reached 100%, while that of me- dium-term and long-term prediction reached over 98% and 95%, respectively, 5% -15% higher than that of the years before 1998.

关键词： Wheat Stripe rust Occurrence characteristics Epidemic regularity Early warning level

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