Pathogenesis-related proteins （PRs） play many important roles in plant defense response against pathogen attack. To better understand the molecular mechanism of PR genes involved in wheat adult plant resistance （AP...Pathogenesis-related proteins （PRs） play many important roles in plant defense response against pathogen attack. To better understand the molecular mechanism of PR genes involved in wheat adult plant resistance （APR） to stripe rust, based on a differentially expressed transcribed derived fragment （TDF）, a novel PR gene from wheat cv. Xingzi 9104 infected by the Puccinia striiformis Westend f. sp. tritici Erikss. pathotype CY32, which was highly similar to the maize ZmPRIO gene and designated as TaPRIO, was identified using in silico cloning and RT-PCR method. This novel TaPRIO gene was predicted to encode a 160-amino acid protein with a deduced molecular weight of 17.06 kDa and an isoelectronic point （pI） of 5.19. An amino acid sequence analysis of TaPR10 demonstrated the presence of a typical conserved domain of pathogenesis related protein Bet v I family. Multiple alignment analysis based on the amino acids encoded by 10 different PRIO genes from maize （Zea mays）, rice （Oryza sativa）, broomcorn （Sorghum bicolor）, and wheat （Triticum aestivum） indicated that PR proteins of class 10 was conserved among the 4 plant species with about 80% similarity. DNA sequence of TaPRIO suggested the presence of one 84-bp intron with the splicing sites of GT-AT bi-nucleotide sequence between 188 and 271 bp. Using a real-time quantitative RT-PCR （qRT-PCR）, expression profiles of TaPRIO revealed that at the adult-plant stage, TaPRIO transcript was up-regulated as early as 12 h post-inoculation （hpi）, with the occurrence of maximum induction at 24 hpi. At the seedling stage, TaPRIO was also slightly induced 18 hpi. However, the transcript amount was relatively lower than that of the adult-plant stage. Taken together, these results suggest that TaPRIO may participate in wheat defense response of APR to stripe rust.展开更多
The purpose of this study is to explore the influence of co-suppressing tomato ACC oxidase Ⅰ on the expression of fruit ripening-related and pathogenesis-related protein genes, and on the biosynthesis of endogenous e...The purpose of this study is to explore the influence of co-suppressing tomato ACC oxidase Ⅰ on the expression of fruit ripening-related and pathogenesis-related protein genes, and on the biosynthesis of endogenous ethylene and storage ability of fruits. Specific fragments of several fruit ripening-related and pathogenesis-related protein genes from tomato （Lycopersicon esculentum） were cloned, such as the l-aminocyclopropane-1-carboxylic acid oxidase 1 gene （LeAC01）, 1- aminocyclopropane-l-carboxylic acid oxidase 3 gene （LeAC03）, EIN3-binding F-box 1 gene （LeEBF1）, pathogenesis-related protein 1 gene （LePR1）, pathogenesis-related protein 5 gene （LePR5）, and pathogenesis-related protein osmotin precursor gene （LeNP24） by PCR or RT-PCR. Then these specific DNA fragments were used as probes to hybridize with the total RNAs extracted from the wild type tomato Ailsa Craig （AC＋＋） and the LeAC01 co-suppression tomatoes （V1187 and T4B）, respectively. At the same time, ethylene production measurement and storage experiment of tomato fruits were carded out. The hybridization results indicated that the expression of fruit ripening-related genes such as LeACO3 and LeEBF1, and pathogenesis-related protein genes such as LePR1, LePR5, and LeNP24, were reduced sharply, and the ethylene production in the fruits, wounded leaves decreased and the storage time of ripening fruits was prolonged, when the expression of LeACO1 gene in the transgenic tomato was suppressed. In the co-suppression tomatoes, the expression of fruit ripening-related and pathogenesis-related protein genes were restrained at different degrees, the biosynthesis of endogenous ethylene decreased and the storage ability of tomato fruits increased.展开更多
Soybean(Glycine max(Linn.)Merr.)annual leguminous crop is cultivated all over the world.The occurrence of diseases has a great impact on the yield and quality of soybean.In this study,based on the RNA-seq of soybean v...Soybean(Glycine max(Linn.)Merr.)annual leguminous crop is cultivated all over the world.The occurrence of diseases has a great impact on the yield and quality of soybean.In this study,based on the RNA-seq of soybean variety M18,a complete CDS(Coding sequence)GmPR1L of the pathogenesis-related protein 1 family was obtained,which has the ability to resist fungal diseases.The overexpression vector and interference expression vector were transferred into tobacco NC89,and the resistance of transgenic tobacco(Nicotiana tabacum L.)to Botrytis cinerea infection was identified.The results show that:Compared with the control,the activities of related defense enzymes SOD(Superoxide dismutase),POD(Peroxidase),PAL(L-phenylalanine ammonia-lyase)and PPO(Polyphenol oxidase)in the over-expressed transgenic tobacco OEA1 and OEA2 increased to different degrees,and increased significantly at different infection time points.The activities of defense enzymes in the interfering strains IEA1 and IEA2 were significantly lower than those in the control strains.The results of resistance level identification showed that the disease spot rate of OEA1 was significantly lower than that of the control line,and the disease spot rate of OEA2 was significantly lower than that of the control line.The plaque rate of the interfering expression line IEA1-IEA2 was significantly higher than that of the control line.It is preliminarily believed that the process related protein GmPR1L can improve the resistance of tobacco to B.cinerea.展开更多
Proteomics techniques were used to study the molecular mechanisms involved in the defense of tomato against late blight (Phytophthora infestans). Proteins were extracted from resistant access BGH-2127 and susceptible ...Proteomics techniques were used to study the molecular mechanisms involved in the defense of tomato against late blight (Phytophthora infestans). Proteins were extracted from resistant access BGH-2127 and susceptible cultivar “Santa Clara”. Leaves of the inoculated and non-inoculated (control) genotypes were collected at 0, 2, and 48 h after inoculation and analyzed by two-dimensional electrophoresis (2-DE), followed by identification with mass spectrometry (MALDI TOF-TOF). A total of 56 differentially abundant proteins were identified, of which 39 were resistant genotypes and 17 were susceptible. These proteins were categorized into functional groups of energy and metabolism, photosynthesis, stress and defense, transcription, other proteins, and as un-characterized ones. For access BGH-2127, oxidative stress proteins (2-cis peroxiedoxin BAS1 and 2-cis peroxiredoxin) and thaumatin-like protein showed increase in the relative abundance at 0 and 48 h of inoculation, respectively, and were therefore considered important for the defense mechanism of this genotype. The expression standards evaluated by real-time PCR differed from the results of the proteomic analysis. The protein-protein interaction networks provided important information on the cellular activities involved in the resistance of BGH-2127 late blight.展开更多
The interactions of pyrogallol red (PR) with proteins and a derivative method for the determination of proteins were proposed. In the pH range 2 56-4 10, PR interacts with proteins, including bovine serum albumin, hu...The interactions of pyrogallol red (PR) with proteins and a derivative method for the determination of proteins were proposed. In the pH range 2 56-4 10, PR interacts with proteins, including bovine serum albumin, human serum albumin, lysozyme, chymotrypsin, resulting in enhanced resonance light scattering(RLS) with the maximal peak at 360 0 nm. With the enhanced RLS, proteins in the range 0-5 0(μg/mL can be determined with the determination limits between 10 3 and 32 2 ng/mL depending on different protein. The effects of foreign substances were tested. The method has been applied to the determination of protein in the synthetic samples and human urine with satisfaction results.展开更多
Members of the Pathogenesis Related(PR)10 protein family have been identified in a variety of plant species and a wide range of functions ranging from defense to growth and development has been attributed to them.PR10...Members of the Pathogenesis Related(PR)10 protein family have been identified in a variety of plant species and a wide range of functions ranging from defense to growth and development has been attributed to them.PR10 protein possesses ribonuclease(RNase)activity,interacts with phytohormones,involved in hormone-mediated signalling,afforded protection against various phytopathogenic fungi,bacteria,and viruses particularly in response to biotic and abiotic stresses.The resistance mechanism of PR10 protein may include activation of defense signalling pathways through possible interacting proteins involved in mediating responses to pathogens,degradation of RNA of the invading pathogens.Moreover,several morphological changes have been shown to accompany the enhanced abiotic stress tolerance.In this review,the possible mechanism of action of PR10 protein against biotic and abiotic stress has been discussed.Furthermore,our findings also confirmed that the in vivo Nitric oxide(NO)is essential for most of environmental abiotic stresses and disease resistance against pathogen infection.The proper level of NO may be necessary and beneficial,not only in plant response to the environmental abiotic stress,but also to biotic stress.The updated information on this interesting group of proteins will be useful in future research to develop multiple stress tolerance in plants.展开更多
Objective: To study the relationship between theexpression of PS, protein and Estrogen (ER) andProgesterone Receptor (PR) status and their prognoticvalue in breast canceL Methods: Using theimmunohistochemical method, ...Objective: To study the relationship between theexpression of PS, protein and Estrogen (ER) andProgesterone Receptor (PR) status and their prognoticvalue in breast canceL Methods: Using theimmunohistochemical method, PS2 protein expressionswere detected in 105 cases with breast cancer. Results:The positive rate of PS2 protein was 50.48% (53/105) in105 cases. The positive rate of PS, in the patients whosurvived five years or more was 56.96% (45/79), whichwas higher than that of those who lived less than fiveyears (30.77%, 8/26). In the ER, PR (+) patients, thepositive rate of PS, was higher (76.74%, 33/34), thanthat of those with ER, PR (-) (22.5%, 9/40). Conclusions:Our results suggest that the expression of PS, proteinwas positively correlated with the 5-year-survival andthat of ER and PR in breast cancer. It is considered thatPS, may be as a prognostic predictor, and detection ofPS, protein expression was useful for a guidingtreatment of breast cancer.展开更多
基金supported by grants from the National Basic Research Program of China (2006CB708208,2006CB101901)the Program for Changjiang Scholars and Innovative Research Team in University, Ministry of Education of China (IRT0558)+1 种基金the National Natural Science Foundation of China (30930064)the 111Project from the Ministry of Education of China(B07049)
文摘Pathogenesis-related proteins （PRs） play many important roles in plant defense response against pathogen attack. To better understand the molecular mechanism of PR genes involved in wheat adult plant resistance （APR） to stripe rust, based on a differentially expressed transcribed derived fragment （TDF）, a novel PR gene from wheat cv. Xingzi 9104 infected by the Puccinia striiformis Westend f. sp. tritici Erikss. pathotype CY32, which was highly similar to the maize ZmPRIO gene and designated as TaPRIO, was identified using in silico cloning and RT-PCR method. This novel TaPRIO gene was predicted to encode a 160-amino acid protein with a deduced molecular weight of 17.06 kDa and an isoelectronic point （pI） of 5.19. An amino acid sequence analysis of TaPR10 demonstrated the presence of a typical conserved domain of pathogenesis related protein Bet v I family. Multiple alignment analysis based on the amino acids encoded by 10 different PRIO genes from maize （Zea mays）, rice （Oryza sativa）, broomcorn （Sorghum bicolor）, and wheat （Triticum aestivum） indicated that PR proteins of class 10 was conserved among the 4 plant species with about 80% similarity. DNA sequence of TaPRIO suggested the presence of one 84-bp intron with the splicing sites of GT-AT bi-nucleotide sequence between 188 and 271 bp. Using a real-time quantitative RT-PCR （qRT-PCR）, expression profiles of TaPRIO revealed that at the adult-plant stage, TaPRIO transcript was up-regulated as early as 12 h post-inoculation （hpi）, with the occurrence of maximum induction at 24 hpi. At the seedling stage, TaPRIO was also slightly induced 18 hpi. However, the transcript amount was relatively lower than that of the adult-plant stage. Taken together, these results suggest that TaPRIO may participate in wheat defense response of APR to stripe rust.
基金supported by National Natural Science Foundation of China(30471180)Nature Science Foundation of Chongqing City,China(8045,2004-56).
文摘The purpose of this study is to explore the influence of co-suppressing tomato ACC oxidase Ⅰ on the expression of fruit ripening-related and pathogenesis-related protein genes, and on the biosynthesis of endogenous ethylene and storage ability of fruits. Specific fragments of several fruit ripening-related and pathogenesis-related protein genes from tomato （Lycopersicon esculentum） were cloned, such as the l-aminocyclopropane-1-carboxylic acid oxidase 1 gene （LeAC01）, 1- aminocyclopropane-l-carboxylic acid oxidase 3 gene （LeAC03）, EIN3-binding F-box 1 gene （LeEBF1）, pathogenesis-related protein 1 gene （LePR1）, pathogenesis-related protein 5 gene （LePR5）, and pathogenesis-related protein osmotin precursor gene （LeNP24） by PCR or RT-PCR. Then these specific DNA fragments were used as probes to hybridize with the total RNAs extracted from the wild type tomato Ailsa Craig （AC＋＋） and the LeAC01 co-suppression tomatoes （V1187 and T4B）, respectively. At the same time, ethylene production measurement and storage experiment of tomato fruits were carded out. The hybridization results indicated that the expression of fruit ripening-related genes such as LeACO3 and LeEBF1, and pathogenesis-related protein genes such as LePR1, LePR5, and LeNP24, were reduced sharply, and the ethylene production in the fruits, wounded leaves decreased and the storage time of ripening fruits was prolonged, when the expression of LeACO1 gene in the transgenic tomato was suppressed. In the co-suppression tomatoes, the expression of fruit ripening-related and pathogenesis-related protein genes were restrained at different degrees, the biosynthesis of endogenous ethylene decreased and the storage ability of tomato fruits increased.
基金This work was supported by Major Science and Technology Projects(20210302002NC)Jilin Province Science and Technology Development Plan Project,Grant Number 20190103120JH+2 种基金Jilin Province Science and Technology Development Plan—Outstanding Young Talents Fund Project,Grant Number 20190103120JThe Fourth Batch of Jilin Province Youth Science and Technology Talent Support Project,Grant Number QT202020National Natural Science Foundation of China Projects,Grant Number 31801381.
文摘Soybean(Glycine max(Linn.)Merr.)annual leguminous crop is cultivated all over the world.The occurrence of diseases has a great impact on the yield and quality of soybean.In this study,based on the RNA-seq of soybean variety M18,a complete CDS(Coding sequence)GmPR1L of the pathogenesis-related protein 1 family was obtained,which has the ability to resist fungal diseases.The overexpression vector and interference expression vector were transferred into tobacco NC89,and the resistance of transgenic tobacco(Nicotiana tabacum L.)to Botrytis cinerea infection was identified.The results show that:Compared with the control,the activities of related defense enzymes SOD(Superoxide dismutase),POD(Peroxidase),PAL(L-phenylalanine ammonia-lyase)and PPO(Polyphenol oxidase)in the over-expressed transgenic tobacco OEA1 and OEA2 increased to different degrees,and increased significantly at different infection time points.The activities of defense enzymes in the interfering strains IEA1 and IEA2 were significantly lower than those in the control strains.The results of resistance level identification showed that the disease spot rate of OEA1 was significantly lower than that of the control line,and the disease spot rate of OEA2 was significantly lower than that of the control line.The plaque rate of the interfering expression line IEA1-IEA2 was significantly higher than that of the control line.It is preliminarily believed that the process related protein GmPR1L can improve the resistance of tobacco to B.cinerea.
文摘Proteomics techniques were used to study the molecular mechanisms involved in the defense of tomato against late blight (Phytophthora infestans). Proteins were extracted from resistant access BGH-2127 and susceptible cultivar “Santa Clara”. Leaves of the inoculated and non-inoculated (control) genotypes were collected at 0, 2, and 48 h after inoculation and analyzed by two-dimensional electrophoresis (2-DE), followed by identification with mass spectrometry (MALDI TOF-TOF). A total of 56 differentially abundant proteins were identified, of which 39 were resistant genotypes and 17 were susceptible. These proteins were categorized into functional groups of energy and metabolism, photosynthesis, stress and defense, transcription, other proteins, and as un-characterized ones. For access BGH-2127, oxidative stress proteins (2-cis peroxiedoxin BAS1 and 2-cis peroxiredoxin) and thaumatin-like protein showed increase in the relative abundance at 0 and 48 h of inoculation, respectively, and were therefore considered important for the defense mechanism of this genotype. The expression standards evaluated by real-time PCR differed from the results of the proteomic analysis. The protein-protein interaction networks provided important information on the cellular activities involved in the resistance of BGH-2127 late blight.
文摘The interactions of pyrogallol red (PR) with proteins and a derivative method for the determination of proteins were proposed. In the pH range 2 56-4 10, PR interacts with proteins, including bovine serum albumin, human serum albumin, lysozyme, chymotrypsin, resulting in enhanced resonance light scattering(RLS) with the maximal peak at 360 0 nm. With the enhanced RLS, proteins in the range 0-5 0(μg/mL can be determined with the determination limits between 10 3 and 32 2 ng/mL depending on different protein. The effects of foreign substances were tested. The method has been applied to the determination of protein in the synthetic samples and human urine with satisfaction results.
基金The work supported by the grant Ministry of Education of the Czech Republic with co-financing from the European Union(grant“KOROLID”,CZ.02.1.01/0.0/0.0/15_003/0000336)the Czech Academy of Sciences(RVO:60077344).
文摘Members of the Pathogenesis Related(PR)10 protein family have been identified in a variety of plant species and a wide range of functions ranging from defense to growth and development has been attributed to them.PR10 protein possesses ribonuclease(RNase)activity,interacts with phytohormones,involved in hormone-mediated signalling,afforded protection against various phytopathogenic fungi,bacteria,and viruses particularly in response to biotic and abiotic stresses.The resistance mechanism of PR10 protein may include activation of defense signalling pathways through possible interacting proteins involved in mediating responses to pathogens,degradation of RNA of the invading pathogens.Moreover,several morphological changes have been shown to accompany the enhanced abiotic stress tolerance.In this review,the possible mechanism of action of PR10 protein against biotic and abiotic stress has been discussed.Furthermore,our findings also confirmed that the in vivo Nitric oxide(NO)is essential for most of environmental abiotic stresses and disease resistance against pathogen infection.The proper level of NO may be necessary and beneficial,not only in plant response to the environmental abiotic stress,but also to biotic stress.The updated information on this interesting group of proteins will be useful in future research to develop multiple stress tolerance in plants.
文摘Objective: To study the relationship between theexpression of PS, protein and Estrogen (ER) andProgesterone Receptor (PR) status and their prognoticvalue in breast canceL Methods: Using theimmunohistochemical method, PS2 protein expressionswere detected in 105 cases with breast cancer. Results:The positive rate of PS2 protein was 50.48% (53/105) in105 cases. The positive rate of PS, in the patients whosurvived five years or more was 56.96% (45/79), whichwas higher than that of those who lived less than fiveyears (30.77%, 8/26). In the ER, PR (+) patients, thepositive rate of PS, was higher (76.74%, 33/34), thanthat of those with ER, PR (-) (22.5%, 9/40). Conclusions:Our results suggest that the expression of PS, proteinwas positively correlated with the 5-year-survival andthat of ER and PR in breast cancer. It is considered thatPS, may be as a prognostic predictor, and detection ofPS, protein expression was useful for a guidingtreatment of breast cancer.
基金This project was supported by The Innovation Fund for Outstanding Scholar of Henan Province(0621001700)the Tackle Key Problem Project in Henan(0523010700)The Innovation Fund of Henan Agricultural University (2006).
