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Rice science 2017年第5期24卷 264-273页

作者： Md Mohibul Alam KHAN Effi HAQUE Narayan Chandra PAUL Md Abdul KHALEQUE Saleh M. S. AL-GARNI Mahfuzur RAHMAN Md Tofazzal ISLAM Department of Biotechnology Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur 1706 Bangladesh Department of Biochemistry & Microbiology North South University Dhaka 1229 Bangladesh Department of Rural Development Administration Bioenergy Crop Research Institute Muan 534833 Republic of Korea Department of Biological Sciences King Abdulaziz University Jeddah 2589 Kingdom of Saudi Arabia West Virginia University Morgantown West Virginia 26505 USA

Plant associated bacteria are promising alternatives to chemical fertilizers for plant growth and yield improvement in an eco-friendly *** this study,rice associated bacteria were isolated and assessed for mineral phosphate solubilization and indole-3-acetic acid(IAA) production activity in *** promising strains,which were tentatively identified as phylotaxon Pseudochrobactrum sp.(BRRh-1),Burkholderia sp.(BRRh-2),Burkholderia sp.(BRRh-3),Burkholderia sp.(BRRh-4),Pseudomonas aeruginosa(BRRh-5 and BRRh-6) based on their 16 S rRNA gene phylogeny,exhibited significant phosphate solubilizing activity in National Botanical Research Institute phosphate growth medium,and BRRh-4 displayed the highest phosphate solubilizing activity,followed by *** p H of the culture broth declined,resulting in increase of growth rate of bacteria at p H 7,which might be due to organic acid secretion by the *** presence of L-tryptophan,five isolates synthesized IAA and the maximum IAA was produced by BRRh-2,followed by *** of two most efficient phosphate solubilizing isolates BRRh-4 and BRRh-5 by root dipping(colonization) of seedling and spraying at the flowering stage significantly enhanced the growth and grain yield of rice variety BRRI ***,application of both strains with 50% of recommended nitrogen,phosphorus and potassium fertilizers produced equivalent or higher grain yield of rice compared to the control grown with full recommended fertilizer doses,which suggests that these strains may have the potential to be used as bioinoculants for sustainable rice production.

关键词： indole-3-acetic acid mineral phosphate solubilization rice plant growth promotion plant associated bacterium grain yield fertilizer

The Auxin-Regulated Protein ZmAuxRPI Coordinates the Balance between Root Growth and Stalk Rot Disease Resistance in Maize

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Molecular Plant 2019年第3期12卷 360-373页

作者： Jianrong Ye Tao Zhong Dongfeng Zhang Chuanyu Ma Lina Wang Lishan Yao Qianqian Zhang Mang Zhu Mingliang Xu State Key Laboratory of Plant Physiology and Biochemistry/National Maize Improvement Center/College of Agronomy and Biotechnology/Center for Crop Functional Genomics and Molecular Breeding China Agricultural University2 West Yuanmingyuan RoadBeijing 100193P.R.China

To optimize fitness, plants must efficiently allocate their resources between growth and defense. Although phytohormone crosstalk has emerged as a major player in balancing growth and defense, the genetic basis by which plants man age this balance remai ns elusive. We previously ide ntified a quantitative disease . resistance locus, qRfg2, in maize (Zea mays) that protects against the fungal disease Gibberella stalk rot. Here, through map-based cloning, we demonstrate that the causal gene at qRfg2 is ZmAuxRPI, which encodes a plastid stroma-localized auxin-regulated protein. ZmAuxRPI responded quickly to pathogen challenge with a rapid yet transient reduction in expression that led to arrested root growth but enhanced resista nee to Gibberella stalk rot and Fusarium ear rot. ZmAuxRPI was show n to promote the biosynthesis of indole-3-acetic acid (IAA), while suppressing the formation of benzoxazinoid defense compounds. ZmAuxRPI presumably acts as a resource regulator modulating indole-3-glycerol phosphate and/or indole flux at the branch point between the IAA and benzoxazinoid biosynthetic pathways. The concerted interplay between IAA and benzoxazinoids can regulate the growth-defense balance in a timely and efficient manner to optimize plant fitness.

关键词： maize quantitative disease resistance Gibberella stalk rot Fusarium ear rot indole-3-acetic acid benzoxazinoids

Comparison of Age and Gender Differences of Tryptophan Metabolites in Patients of Major Monopolar and Bipolar Depression

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Food and Nutrition Sciences 2020年第3期11卷 172-185页

作者： Hiroi Tomioka Junichi Masuda Akikazu Takada Akira Iwanami Department of Psychiatry Showa University School of Medicine Showa Japan Department of Psychiatry Showa University Northern Yokohama Hospital Showa Japan Global Application Development Center Shimadzu Corporation Kanagawa-ken Japan International Projects on Food and Health (NPO) Tokyo Japan

Background: No research has been done for the determination of plasma levels of tryptophan metabolites in patients of monopolar and bipolar depression. Methods: Ultra high-speed liquid chromatography/mass spectrometry has been used for the simultaneous determination of plasma levels of tryptophan metabolites in depressive patients. Results: No significant age and gender differences were shown in monopolar depressive patients and some differences were shown in bipolar patients. The administration of drugs such as antidepressants, antipsychotics, mood stabilizers do not seem to have affected the results. Conclusion: In patients of major monopolar depression age and gender differences of plasma levels of tryptophan metabolites disappear although significant differences are observed in healthy volunteers. Some differences of age and gender differences were shown between monopolar and bipolar depressive patients.

关键词： Depression Monopolar Depression Bipolar Depression Tryptophan Serotonin 5-Hydroxyindole acetic Acid Kynurenine 3-Hydroxykynurenine Kynurenic Acid Anthranilic Acid Xanthurenic Acid indole-3-acetic Acid SSRI (Selective Serotonin Reuptake Inhibitor) SNRI (Serotonin Norepinephrine Reuptake Inhibitor) Anxiolytic Antipsychotic

Effects of Gender, Age, and Clot Formation on the Measurements of Tryptophan Metabolites in Blood

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Food and Nutrition Sciences 2019年第7期10卷 761-775页

作者： Junichi Masuda Masato Karayama Takafumi Suda Masato Maekawa Fumiko Shimizu Akikazu Takada Global Application Development Center Shimadzu Corporation Kanagawa-ken Japan Second Department of Internal Medicine Hamamatsu University School of Medicine Hamamatsu Japan Department of Laboratory Medicine Hamamatsu University School of Medicine Hamamatsu Japan Faculty of Life and Environmental Sciences Showa Women’s University Tokyo Japan International Projects on Food and Health (NPO) Tokyo Japan

Background: Tryptophan metabolism plays important roles in health and diseases. Although simultaneous measurements of tryptophan metabolites are successfully measured, influences of age, gender, and clot formation on the measurements have not been reported. Methods: We took blood from young and old Japanese men and women and compared plasma levels of tryptophan metabolites. We also took plasma and serum from the blood of middle-aged men (n = 10). Metabolites analysis was performed by a liquid chromatograph tandem mass spectrometer, the LCMS-8060 quadrupole mass spectrometer combined with Nexera X2 liquid chromatograph system (Shimadzu Corporation, Kyoto, Japan). Body mass index (BMI) and TRP metabolites have been measured in healthy young men (n = 48), young women (n = 47), old men (n = 44), and old women (n = 39). TRP metabolites were measured by using the ultrahigh speed liquid chromatography-mass spectroscopy (Shimadzu Corporation). Results: Tryptophan and its metabolites such as serotonin, 5-hydroxyindole acetic acid, indole-3-acetic acid, kynurenine, anthranilic acid, were higher in young women and old men than young men and old women. Plasma levels of 3-hydroxykynurenine and xanthurenic acid were lower in young women and old men. Comparison of plasma and serum indicates that most of metabolites were higher in serum than plasma except for 3-hydroxy-kynurenine and quinolinic acid. Conclusion: Metabolites of the upper stream of degradation of tryptophan were higher in young women and old men than young men and old women, which suggests that the degradation of tryptophan was accelerated in young men and old women than young women and old men. Serum preparation may activate tryptophan degradation resulting in higher levels of metabolites in serum than in plasma.

关键词： Plasma Serum Platelet Tryptophan Serotonin 5-Hydroxyindole acetic Acid Kynurenine 3-Hydroxykynurenine Kynurenic Acid Anthranilic Acid Xanthurenic Acid indole-3-acetic Acid

The Effect of Exogenous Phytohormones on Resistance of Wheat Calluses to <i>Tilletia caries</i>(D.C.) Tul. &C. Tul.

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American Journal of Plant Sciences 2014年第12期5卷 1745-1754页

作者： Igor V. Maksimov Liubov G. Yarullina Olga B. Surina Institute of Biochemistry and Genetics Ufa Research Center Russian Academy of Sciences Ufa Russia Institute of Biochemistry and Genetics Ufa Research Center Russian Academy of Sciences Ufa Russia Bashkir State University Ufa Russia

The influence of exogenic hormones (indole-3-acetic acid (IAA), abscisic acid (ABA) and kinetin) on defense reaction of wheat (Triticum aestivum L.) calli to the bunt agent Tilletia caries (D.C.) Tul. & C. Tul. was studied. ABA and kinetin induced the oxalate oxidase activity, increased the Н2О2 level, decreased germination of fungi teliospores and induced on calli the occurrence of dense sites non-infected by pathogen. On the contrary, IAA led to the decrease of oxalate oxidase activity, loosening of calli and increase germination of bunt agent teliospores and growth of fungi mycelium, besides stimulated rhizoids formation of wheat calli. Probably, the accumulation of Н2О2 in wheat calli under the influence of kinetin and ABA connected with activity of oxalate oxidase is one of the factors increasing defense reaction of wheat to bunt agent.

关键词： Wheat Calluses Tilletia caries indole-3-acetic Acid (IAA) Abscisic Acid (ABA) Cytokinins Defense Oxalate Oxidase

花生根际多功能高效促生菌的筛选鉴定及其效应研究

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生物技术通报 2017年第10期33卷 125-134页

作者：刘晔刘晓丹张林利吴越王国文汪强姜瑛河南农业大学资源与环境学院郑州450002 山东省土壤肥料总站济南250100

为了获得具有固氮、解磷解钾及合成生长素的多功能花生根际促生菌(PGPR),提高和改善河南花生种植区的花生产量和品质。从华北地区花生根际砂质潮土中筛选出5株多功能促生菌HS4、HS7、HS9、HS10、HS11,通过对其各功能指标的对比挑选出菌... 详细信息

为了获得具有固氮、解磷解钾及合成生长素的多功能花生根际促生菌(PGPR),提高和改善河南花生种植区的花生产量和品质。从华北地区花生根际砂质潮土中筛选出5株多功能促生菌HS4、HS7、HS9、HS10、HS11,通过对其各功能指标的对比挑选出菌株HS9,其固氮酶活性、解磷解钾以及产IAA能力分别达到15.53 nmol C2H4/h·m L、279.23 mg/L、22.5 mg/L和40.96 mg/L。经形态观察、生理生化指标以及16S r DNA保守序列鉴定,确定该菌株为弯曲芽胞杆菌(Bacillus flexus)。最后通过花生盆栽实验验证其促生能力。盆栽实验表明:接种HS9能显著提高土壤中速效磷、钾含量,极显著地提高了土壤中IAA的含量;植株的根总长、根表面积、根体积和根尖数分别增加了109.60%、84.30%、76.08%和386.24%,促进植株对养分的吸收和利用,提高植株生物量以及养分含量;植株鲜重、株高、叶绿素值(Soil and plant analyzer development,SPAD)及氮、磷、钾含量分别提高了70.05%、28.35%、16.06%、23.11%、83.04%和23.95%。该多功能菌株对花生具有良好的促生作用,具有广阔的农业应用前景。

关键词：花生固氮解磷解钾 indole-3-acetic acid 根际促生菌