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Journal of Integrative Plant Biology 2020年第6期62卷 737-760页

作者： Xuedan Lu Yan Zhou Fan Fan JunHua Peng Jian Zhang Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China School of AgricultureHunan Agricultural UniversityChangsha 410128China Huazhi Rice Bio‐tech Company Ltd. Changsha 410128China

Rice(Oryza sativa L.)is a major staple food crop for over half of the world’s *** a crop species originated from the subtropics,rice production is hampered by chilling *** genetic mechanisms of rice responses to chilling stress have attracted much attention,focusing on chilling-related gene mining and functional *** have evolved sophisticated regulatory systems to respond to chilling stress in coordination with light signaling pathway and internal circadian ***,in rice,information about light-signaling pathways and circadian clock regulation and their roles in chilling tolerance remains *** investigation into the regulatory network of chilling tolerance in rice is needed,as knowledge of the interaction between temperature,light,and circadian clock dynamics is ***,based on phenotypic analysis of transgenic and mutant rice lines,we delineate the relevant genes with important regulatory roles in chilling *** addition,we discuss the potential coordination mechanism among temperature,light,and circadian clock in regulating chilling response and tolerance of rice,and provide perspectives for the ongoing chilling signaling network research in rice.

关键词： chilling potential coordination

In-situ observation of crystal detachment behavior in NH_4Cl-H_2O system from chilling metal surface with vibration

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中国有色金属学会会刊：英文版 2010年第S3期20卷 821-825页

作者：张莹王猛杜立成林鑫黄卫东 State Key Laboratory of Solidification Processing Northwestern Polytechnical University

The crystal detachment behaviors from a chilling solid surface with vibration were investigated using a transparent NH4Cl-70%H2O *** nucleation experiments of NH4Cl-70%H2O alloy were performed on a chilling surface generator with various vibration frequency from 20 to 1 000 Hz and vibration acceleration from 10 to 100 m/*** results indicate that the crystal detach rate increases and the grains are refined with increasing vibration acceleration under a certain vibration *** is interesting to note that,when the frequency is 50 Hz,acceleration is 100 m/s2,the crystal detach rate increases sharply and the grain refinement effect is strengthened.A special grain refinement phenomenon can be observed,when the vibration acceleration and frequency are up to a critical value.A power-based definition was introduced in order to describe the relationship between the vibration parameters and imposed power on the *** is found that a power criterion exists for the grain refinement in the current system.

关键词： vibration chilling detachment refinement NH4Cl-H2O alloy

Effects of Exogenous Silicon on the Activities of Antioxidant Enzymes and Lipid Peroxidation in chilling-Stressed Cucumber Leaves

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Agricultural Sciences in China 2009年第9期8卷 1075-1086页

作者： LIU Jiao-jing LIN Shao-hang XU Pei-lei WANG Xiu-juan BAI Ji-gang State Key Laboratory of Crop Biology/College of Life Sciences Shandong Agricultural UniversityTai’an 271018P.R.China

In order to increase vegetable productivity by improving environmental conditions, this article investigates the effects of exogenous silicon on the activities of major antioxidant enzymes and on lipid peroxidation under chilling stress, and it examines whether silicon-induced chilling tolerance is mediated by an increase in antioxidant activity. Cucumis sativus cv. Jinchun 4 was hydroponically cultivated to the two-leaf stage, at which point seedlings were watered with different concentrations of silicon (0, 0.1 and 1 mmol L^-1) and separately exposed to normal (25/18℃) or chilling (15/8℃) temperatures for six days under low light (100μmol m^-2 s^-9. Data were collected from the second leaves on the percentage of withering and the levels of endogenous silicon, malondialdehyde (MDA), hydrogen peroxide (H202), superoxide radical (O2^.-), superoxide dismutase (SOD, EC 1.***.1.1), glutathione peroxidase (GSH-Px, EC 1.***.1.9), ascorbate peroxidase (APX, EC 1.***.1.11), monodehydroascorbate reductase (MDHAR, EC 1.***.5.4), glutathione reductase (GR, EC 1.***.4.2), reduced glutathione (GSH) and ascorbate (AsA). Compared to normal temperatures, chilling resulted in partially withered leaves and increased MDA content. When 0.1 or 1 mmol L^-1 exogenous silicon was combined with chilling, the withering of the cucumber leaves was reduced relative to the original chilling treatment, while the endogenous silicon content was increased, antioxidants such as SOD, GSH-Px, APX, MDHAR, GR, GSH, and AsA were more active, and the levels of H2O2, O2^.-, and MDA were lower. We propose that exogenous silicon leads to greater deposition of endogenous silicon and thereby increases antioxidant activities and reduces lipid peroxidation induced by chilling.

关键词： antioxidant enzyme chilling Cucumis sativus lipid peroxidation silicon

Water relations and an expression analysis of plasma membrane intrinsic proteins in sensitive and tolerant rice during chilling and recovery

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Cell Research 2006年第6期16卷 599-608页

作者： Xin Yu~1 Yan Hui Peng~1 Min Hua Zhang~1 Yan Jun Shao~(1,2) Wei Ai Su~1 Zhang Cheng Tang~1 Institute of Plant Physiology and Ecology,Shanghai institutes for Biological Sciences,Chinese Academy of Sciences 300 Fenglin Road,Shanghai,200032,China ~2Life Science College,Hebei Agriculture University,38 Ling-Yu-Si street,Baoding,Hebei,071001,China Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China Life Science College Hebei Agriculture University Baoding China

A symptom of chilling injury is development of water deficit in shoots,resulting from an imbalance of water transportand *** this work,two rice varieties(Oryza sativa *** and Somewake)seedlings were chilledat 7℃,followed by recovery at 28℃.Based on the growth phenotype and electrolyte leakage tests,Somewake wasshown to be a chilling-tolerant variety,and Wasetoitsu a chilling-sensitive *** chilling stress reduced markedly therelative water content(RWC)of leaves,accumulative transpiration and osmotic root hydraulic conductivity(Lp)in *** when returned to 28℃,the water relation balance of Somewake recovered *** mRNA expressionprofile of all the 11 plasma membrane intrinsic proteins(PIPs),a subgroup of aquaporins,was subsequently determinedby real-time reverse transcription(RT)-PCR with TaqMan-minor grove binder(MGB)probes derived from rice ***-ponbare during chilling treatment and *** of the PIP genes was down-regulated at the low temperature,andrecovered at the warm *** relative expression of some PIPs in both Somewake and Wasetoitsu decreasedin parallel during the *** during the recovery,the relative expression ofOsPIPl;1,OsPIP2,1,OsPIP2;7in shoots and OsPIP1;1,OsPIP2;1 in roots were significantly higher in Somewake than *** supports therole of PIPs in re-establishing water balance after chilling *** discuss the diversified roles played by membersof the aquaporin PIP subfamily in plant chilling tolerance depending on aquaporin isoforms,plant tissue and the stageof chilling duration.

关键词： aquaporin chilling gene expression plasma membrane intrinsic protein rice

Analysis of changes in the Panax notoginseng glycerolipidome in response to long-term chilling and heat

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Plant Diversity 2020年第2期42卷 102-110页

作者： Tao Liu Jia Chen Furong Xu Xiahong He Shengchao Yang Youyong Zhu Weiqi Li Guowei Zheng National&Local Joint Engineering Research Center on Germplasm Utilization&Innovation of Chinese Medicinal Materials in Southwest China Yunnan Agricultural UniversityKunmingChina Yunnan Key Laboratory of Dai and Yi Medicines Yunnan University of Chinese MedicineKunmingChina College of Chinese Material Medica Yunnan University of Chinese MedicineKunmingChina Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingChina

Long-term moderately high or low temperatures can damage economically important *** the present study,we treated Panax notoginseng,an important traditional Chinese medicine,with temperatures of 10,20,and 30℃for 30 *** then investigated *** glycerolipidome responses to these moderate temperature stresses using an ESI/MS-MS-based lipidomic *** long-term chilling(LTC,10℃)and long-term heat(LTH,30℃)decreased photo pigment levels and photosynthetic ***-induced degradation of photo pigments and glycerolipids may further cause the decline of photosynthesis and thereafter the senescence of ***-induced photosynthesis decline is attributed to the degradation of photo synthetic pigments rather than the degradation of chloroplastidic *** has an especially high level of lysophosphatidylglycerol,which may indicate that either *** phospholipase A acts in a special manner on phosphatidylglycerol(PG),or that phospholipase B *** ratio of sulfoquinovosyldiacylglycerol(SQDG)to PG increased significantly after LTC treatment,which may indicate that SQDG partially substitutes for *** LTC treatment,the increase in the degree of unsaturation of plastidic lipids was less than that of extraplastidic lipids,and the increase in the unsaturation of PG was the largest among the ten lipid classes *** results indicate that increasing the level of unsaturated PG may play a special role in maintaining the function and stability of *** photosystems after LTC treatment.

关键词： Extraplastidic lipids Glycerolipidome Long-term chilling stress Long-term heat stress Panax notoginseng Plastidic lipids

Photosynthesis, chilling acclimation and the response of antioxidant enzymes to chilling stress in mulberry seedlings

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Journal of Forestry Research 2019年第6期30卷 2021-2029页

作者： Xiaojia Liu Nan Xu Yining Wu Jinbo li Haixiu Zhong Huihui Zhang College of Horticulture Jilin Agricultural UniversityChangchun 130118People’s Republic of China Natural Resources and Ecology Institute Heilongjiang Academy of SciencesHarbin 150040People’s Republic of China College of Resources and Environment Northeast Agricultural UniversityHarbin 150030Heilongjiang ProvincePeople’s Republic of China

This study investigates the effects of cold-acclimation in conferring chilling tolerance in seedlings of the mulberry(Morus alba) variety ‘Qiuyu’. Changes in photosynthesis and antioxidant enzymes in chilling acclimatized(CA), and non-acclimatized(NA) seedlings were recorded during chilling stress(3 °C) and a recovery period(25 °C) each for 3 days. The results showed that CA plants had higher net photosynthetic rates(P_n), stomatal conductance(G_s), and maximum photochemical efficiency of photosystem Ⅱ(F_v/F_m) in response to chilling stress compared to NA. The seedlings maintained the same trends during the recovery stage. The responses of Q_A reduction degree (1-q_P) and prime electronic transfer rates(F_o) were lower in acclimatized than in non-acclimatized seedlings. Low-temperature acclimation and chilling stress also caused an increase in leaf proline and soluble sugar contents. Leaf malondialdehyde levels were significantly lower while ascorbate peroxidase(APX) activity was significantly higher in acclimatized seedlings, suggesting that elevated osmolytes and APX confer resistance to chilling temperatures. In this study on the response of mulberry seedlings to chilling stress, we also looked at the recovery process. The response to chilling determines whether mulberry leaves can survive under cold temperatures, while the recovery process determines whether photosynthesis can recover as soon as possible to avoid any secondary damage.

关键词： Antioxidant enzyme chilling acclimation chilling tolerance Mulberry Photosynthesis

The tomato 2-oxoglutarate-dependent dioxygenase gene SlF3HL is critical for chilling stress tolerance

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Horticulture Research 2019年第1期6卷 1153-1164页

作者： Tixu Hu Yuqin Wang Qiqi Wang Ningning Dang Ling Wang Chaochao Liu Jianhua Zhu Xiangqiang Zhan State Key Laboratory of Crop Stress Biology for Arid Areas and College of Horticulture Northwest A&F UniversityNo.3Taicheng Road712100 YanglingShaanxiChina School of Biotechnology Jiangsu University of Science and TechnologyZhenjiangJiangsuChina Department of Plant Science and Landscape Architecture College of Agriculture and Natural ResourcesUniversity of MarylandCollege ParkMD 20742USA

Low temperature is a major stress that severely affects plant development,growth,distribution,and ***,we examined the function of a 2-oxoglutarate-dependent dioxygenase-encoding gene,SlF3HL,in chilling stress responses in tomato(Solanum lycopersicum *** Craig[AC]).Knockdown(KD)of SlF3HL(through RNA interference)in tomato led to increased sensitivity to chilling stress as indicated by elevated levels of electrolyte leakage,malondialdehyde(MDA)and reactive oxygen species(ROS).In addition,the KD plants had decreased levels of proline and decreased activities of peroxisome and superoxide *** expression of four cold-responsive genes was substantially reduced in the KD ***,seedling growth was significantly greater in AC or SlF3HLoverexpression plants than in the KD plants under either normal growth conditions with methyl jasmonate(MeJA)or chilling stress ***3HL appears to positively regulate JA accumulation and the expression of JA biosynthetic and signaling genes under chilling ***,these results suggest that SlF3HL is a positive regulator of chilling stress tolerance and functions in the chilling stress tolerance pathways,possibly by regulating JA biosynthesis,JA signaling,and ROS levels.

关键词： elevated stress chilling

Chromatin accessibility and translational Iandscapes of tea plants under chilling stress

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Horticulture Research 2021年第1期8卷 1458-1472页

作者： Pengjie Wang Shan Jin Xuejin Chen Liangyu Wu Yucheng Zheng Chuan Yue Yongchun Guo Xingtan Zhang Jiangfan Yang Naixing Ye College of Horticulture Fujian Agriculture and Forestry University/Key Laboratory of Tea Science in Universities of Fujian ProvinceFuzhou 350002China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China

Plants have evolved regulatory mechanisms at multiple levels to regulate gene expression in order to improve their cold ***,limited information is available regarding the stress response at the chromatin and translational ***,we characterize the chromatin accessibility,transcriptional,and translational landscapes of tea plants in vivo under chilling stress for the first *** stress signi ficantly affected both the transcription and translation levels as well as the translation efficiency of tea plants.A total of 3010 genes that underwent rapid and independent translation under chilling stress were observed,and they were signi ficantly enriched in the photosynthesis-antenna protein and phenylpropanoid biosynthesis pathways.A set of genes that were signi ficantly responsive to cold at the transcription and translation levels,including four(+)-neomenthol dehydrogenases(MNDs)and two(E)-nerolidol synthases(NESs)arranged in tandem on the chromosomes,were also *** detected potential upstream open reading frames(uORFs)on 3082 genes and found that tea plants may inhibit the overall expression of genes by enhancing the translation of uORFs under chilling *** addition,we identi fied distal transposase hypersensitive sites(THSs)and proximal THSs and constructed a transcriptional regulatory network for tea plants under chilling *** also identi fied 13 high-con fidence transcription factors(TFs)that may play a crucial role in cold *** results provide valuable information regarding the potential transcriptional regulatory network in plants and help to clarify how plants exhibit flexible responses to chilling stress.

关键词： stress chilling landscape

Thermal-responsive genetic and epigenetic regulation of DAM cluster controlling dormancy and chilling requirement in peach floral buds

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Horticulture Research 2020年第1期7卷 1276-1289页

作者： Hong Zhu Pao-Yang Chen Silin Zhong Chris Dardick Ann Callahan Yong-Qiang An Steve van Knocker Yingzhen Yang Gan-Yuan Zhong Albert Abbott Zongrang Liu USDA-ARS Appalachian Fruit Research StationKearneysvilleWV 25430USA Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China Institute of Plant and Microbial Biology Academia SinicaTaipei 11529Taiwan The State Key Laboratory of Agrobiotechnology School of Life ScienceThe Chinese University of Hong KongHong KongHong Kong USDA-ARS Plant Genetics Research UnitDonald Danforth Plant Science CenterSt LouisMO 63132USA Department of Horticulture Michigan State UniversityEast LansingMI 48834USA USDAARS Grape Genetic Research UnitGenevaNY 14456USA Forest Health Research and Education Center University of KentuckyLexingtonKY 40546USA

The Dormancy-associated MADS-box(DAM)gene cluster in peach serves as a key regulatory hub on which the seasonal temperatures act and orchestrate dormancy onset and exit,chilling response and floral bud developmental ***,how different temperature regimes interact with and regulate the six linked DAM genes remains ***,we demonstrate that chilling downregulates DAM1 and DAM3–6 in dormant floral buds with distinct patterns and identify DAM4 as the most abundantly expressed *** reveal multiple epigenetic events,with tri-methyl histone H3 lysine 27(H3K27me3)induced by chilling specifically in DAM1 and DAM5,a 21-nt sRNA in DAM3 and a ncRNA induced in *** induction is inversely correlated with downregulation of their cognate *** also show that the six DAMs were hypermethylated,associating with the production of 24-nt ***,the chilling-responsive dynamic of the different epigenetic elements and their interactions likely define distinct expression abundance and downregulation pattern of each *** further show that the expression of the five DAMs remains steadily unchanged or continuously downregulated at the ensuing warm temperature after chilling,and this state of regulation correlates with robust increase of sRNA expression,H3K27me3 and CHH methylation,which is particularly pronounced in *** robust increase of repressive epigenetic marks may irreversibly reinforce the chillingimposed repression of DAMs to ensure flower-developmental programming free from any residual DAM *** together,we reveal novel information about genetic and epigenetic regulation of the DAM cluster in peach,which will be of fundamental significance in understanding of the regulatory mechanisms underlying chilling requirement and dormancy release,and of practical application for improvement of plasticity of flower time and bud break in fruit trees to adapt changing climates.

关键词： epigenetic cluster chilling

Effect of Combined chilling and GA_3 Treatment on Bud Abortion in Forced ‘Luoyanghong' Tree Peony(Paeonia suffruticosa Andr.)

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Horticultural Plant Journal 2018年第6期4卷 250-256页

作者： MORNYA Philip M.P. CHENG Fangyun National Flower Engineering Research Center College of Landscape Architecture Beijing Forestry University School of Natural Resources Management Njala University National Flower Engineering Research Center College of Landscape ArchitectureBeijing Forestry University

This research investigated the effect of combined chilling and GA_3 treatment on bud abortion of tree peony under greenhouse conditions to determine the dynamics of exogenous hormones and chilling effects on bud abortion. Research of such nature will increase the understanding of the effects of GA_3 and chilling level on flower development thereby, promoting off-season cultivation techniques in tree peonies to increase production that meets market demand. Hormone and sugar levels in the ‘Luoyanghong' tree peony were respectively determined using High-Performance Liquid Chromatography(HPLC) and spectrophotometer. Non-potted chilling with 200 mg·L^(-1) GA_3 treatment reduced bud abortion rate. Flowering rate in non-potted chilling with 200 mg·L^(-1) GA_3 plants was 58%, as against 21% in potted chilling plants with 200 mg·L^(-1) GA_3 treatment. Sugar accumulation in retained or aborted flower buds was conversely related to ABA level. Low ABA and high sugar levels were noted in retained buds whereas the reverse induced bud abortion. ABA level apparently inhibited sucrose and reducing sugar uptake in aborted buds whereas GA_3 enhanced sucrose uptake in retained buds. GA_3 and IAA levels were higher in retained than in aborted buds, which made plants with retained bud more competitive in nutrient uptake(by root)for growth and development. Overall, combined chilling and GA_3 treatment enhanced plant growth and development, particularly bud sprouting, growth and flowering.

关键词： tree peony bud abortion chilling hormone sugar GA3 ABA IAA