Response of Martonvásár maize inbred lines to increased UV-B radiation

2011 ◽  
Vol 59 (3) ◽  
pp. 217-222
Author(s):  
J. Pintér ◽  
I. Pók ◽  
T. Janda ◽  
Z. Szigeti ◽  
C. Marton
Keyword(s):  
Environmental Conditions ◽  
Plant Biomass ◽  
Inbred Lines ◽  
Plant Tissues ◽  
Central European ◽  
Plant Life ◽  
Maize Inbred Lines ◽  
The World ◽  
Solar Uv ◽  
Living Organisms

Solar UV-B radiation is generally regarded as an environmental stress factor, causing harm to living organisms by damaging DNA, proteins, lipids and membranes. Increased UV-B radiation may affect plant life directly or indirectly, having an influence on photosynthesis and plant biomass. In many plants, including maize (which is one of the most important crops in the world), exposure to increased UV-B radiation causes the induction of UV-B absorbing compounds (e.g. flavonoids), which act as UV-B screens and reduce the dangerous levels and effects of this radiation in plant tissues and cells.This study aimed to reveal how Martonvásár maize inbred lines (bred under Central European environmental conditions) respond to increased UV-B radiation.

scholarly journals Genetic diversity of maize inbred lines as inferred from SSR markers

Genetika ◽  
2015 ◽  
Vol 47 (2) ◽  
pp. 489-498
Author(s):  
Ana Nikolic ◽  
Dragana Ignjatovic-Micic ◽  
Dragan Kovacevic ◽  
Zoran Camdzija ◽  
Milomir Filipovic ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Principal Component ◽  
Inbred Lines ◽  
Yield Potential ◽  
Pedigree Data ◽  
Maize Breeding ◽  
Breeding Programs ◽  
Maize Inbred Lines ◽  
The World

Creating new maize hybrids with greater yield potential is a permanent goal of breeding programs all over the world. Long-time existing and new problems related to different biotic and abiotic stresses and the growing needs of the world market require constant work on finding new ways for advancing maize production. Molecular marker technology is one of the fastest developing fields and its implementation has already given results in solving different problems related to maize breeding improvement. The aim of the study presented herein was characterization and genetic similarity assessment of twenty-nine maize inbred lines from Maize Research Institute collection using Simple Sequence Repeats (SSR) markers. The analysis was done using 20 pairs of SSR primers with clearly visible and reproducible results. A total of 119 alleles were detected with a mean of 5.8 per locus. PIC (Polymorphism Information Content) values were in the range from 0.45 to 0.92 (average 0.74). Genetic similarities calculated using Jaccard?s coefficient ranged from 0.27 to 0.99. Cluster and Principal Component Analysis (PCA) analysis were done using matrices of similarity in the NTSYSpc software, version 2.1. Results of both classifications were moderately in agreement with the pedigree data of analysed genotypes. The information about genetic diversity of maize inbred lines revealed by SSR markers could be useful in planning strategies for future maize breeding programs.

scholarly journals Comparative transcriptome analysis of two contrasting maize inbred lines provides insights on molecular mechanisms of stalk rot resistance

2021 ◽  
Author(s):  
Andres Salcedo ◽  
Jameel Al-Haddad ◽  
C. Robin Buell ◽  
Frances Trail ◽  
Elsa Góngora-Castillo ◽  
...  
Keyword(s):  
Gene Expression ◽  
Gene Expression Profiling ◽  
Transcriptome Analysis ◽  
Environmental Conditions ◽  
Expression Profiling ◽  
Molecular Mechanisms ◽  
Inbred Lines ◽  
Stalk Rot ◽  
Maize Inbred Lines ◽  
Resistant Varieties

Maize stalk rot caused by Fusarium graminearum can lead to severe losses and accumulation of mycotoxins with detrimental effects on livestock health. Since few management strategies are available, the development of resistant varieties is considered the most cost-effective way to control the disease. However, the specific mechanism(s) underlying resistance to stalk rot caused by F. graminearum remain poorly understood, although it is believed to be strongly influenced by environmental factors. In this study, we performed a temporal transcriptome analysis of two maize inbred lines with contrasting responses to stalk rot using gene expression profiling. We observed differential down-regulation of gene expression during the first two weeks in a resistant inbred line inoculated with F. graminearum. Time-course gene ontology enrichment analysis suggests that resistance may be caused by a modulation of gene expression associated with redox homeostasis, hormone biosynthesis, cytoskeleton activity and cell wall remodeling. We validated our gene expression profiling data by measuring the expression of ten differentially expressed genes (DEGs) using quantitative reverse transcription PCR (RT-qPCR). Our analyses also revealed the effect of two environmental conditions with contrasting temperatures and relative humidity on the resistant phenotype and gene expression. This research expands our knowledge of molecular events underlying resistance to stalk rot and the effect of environmental conditions on the disease interaction. Our findings can be exploited for the development of resistant varieties.

GENOTOXIC ACTIVITY OF THE PESTICIDE MIXTURES

2020 ◽  
pp. 9-13 ◽  
Author(s):  
N. A. Ilyushina ◽  
Yu. A. Revazova
Keyword(s):  
Public Health ◽  
Combined Effect ◽  
Literature Information ◽  
Genotoxic Effects ◽  
Antagonistic Effects ◽  
Pesticide Mixtures ◽  
The World ◽  
Living Organisms ◽  
Genetic Structures ◽  
Active Substances

In order to overcome resistance to individual pesticides and improve their effectiveness, formulations containing two or more active substances are constantly being developed and put on the market over recent years. Mixtures of residual amounts of pesticides can be present in water and food and enter the human and animal bodies. However, the combined effect of pesticides on living organisms, including genetic structures in cells, has not been studied enough and it is not yet possible to predict the genotoxic effects of their mixtures based on available data. The purpose of this review was to collect and summarize literature information on the genotoxicity of pesticide combinations obtained at different objects. The results of studies conducted in different countries of the world are discussed, examples of detected synergistic, additive and antagonistic effects are given, indicating the need for testing the genotoxicity of preparative forms of pesticides containing several active substances, as well as mixtures of jointly used pesticides in order to ensure the safe use of pesticides for public health.

Combining Ability of Traits Related to Nitrogen Use Efficiency in Eighteen Maize Inbred Lines

2014 ◽  
Vol 40 (5) ◽  
pp. 838 ◽  
Author(s):  
Chao CUI ◽  
Ju-Lin GAO ◽  
Xiao-Fang YU ◽  
Zhi-Jun SU ◽  
Zhi-Gang WANG ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Combining Ability ◽  
Inbred Lines ◽  
Nitrogen Use ◽  
Maize Inbred Lines ◽  
Use Efficiency

Effects of Artificial Shaded-Humid Environment on Growth Characteristics inDifferent Maize Inbred Lines

2013 ◽  
Vol 39 (12) ◽  
pp. 2253
Author(s):  
Qing-Jiu YAN ◽  
Shi-Ping HUO ◽  
Fang-Kui ZHANG ◽  
Xing-Duan ZHANG ◽  
Jian ZHANG ◽  
...  
Keyword(s):  
Inbred Lines ◽  
Growth Characteristics ◽  
Humid Environment ◽  
Maize Inbred Lines

Combining Ability of Maize Inbred Lines from Shaan A Group and Shaan B Group under Different Density Conditions

2017 ◽  
Vol 43 (9) ◽  
pp. 1328 ◽  
Author(s):  
Bo-Xin WANG ◽  
Ya-Hui WANG ◽  
Peng-Fei CHEN ◽  
Xu-Dong-Yu LIU ◽  
Zhi-Qian FENG ◽  
...  
Keyword(s):  
Combining Ability ◽  
Inbred Lines ◽  
Maize Inbred Lines
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