Chromosome endoreduplication in endosperm cells of two maize genotypes and their progenies

PROTOPLASMA ◽  
1995 ◽  
Vol 189 (3-4) ◽  
pp. 156-162 ◽  
Author(s):  
A. Cavallini ◽  
L. Natali ◽  
C. Balconi ◽  
E. Rizzi ◽  
M. Motto ◽  
...  
Keyword(s):  
Chromosome Endoreduplication ◽  
Maize Genotypes

Effect of phosphorus stress on the pigment and morphology of different maize genotypes

2009 ◽  
Vol 17 (1) ◽  
pp. 125-129 ◽  
Author(s):  
Jun-Yi CHEN ◽  
Yi-Lin CAI ◽  
Li XU ◽  
Zhi-Guo YANG ◽  
Xiao-Ling GAN ◽  
...  
Keyword(s):  
Phosphorus Stress ◽  
Maize Genotypes

Root Morphology of Contrasting Maize Genotypes

2002 ◽  
Vol 94 (1) ◽  
pp. 96 ◽  
Author(s):  
Carlos Costa ◽  
Lianne M. Dwyer ◽  
Xiaomin Zhou ◽  
Pierre Dutilleul ◽  
Chantal Hamel ◽  
...  
Keyword(s):  
Root Morphology ◽  
Maize Genotypes

scholarly journals Characterization of Maize Genotypes (Zea mays L.) for Resistance to Striga asiatica and S. hermonthica and Compatibility with Fusarium oxysporum f. sp. strigae (FOS) in Tanzania

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1004
Author(s):  
John Lobulu ◽  
Hussein Shimelis ◽  
Mark D. Laing ◽  
Arnold Angelo Mushongi ◽  
Admire Isaac Tichafa Shayanowako
Keyword(s):  
Grain Yield ◽  
Fusarium Oxysporum ◽  
Biocontrol Agent ◽  
Zea Mays L ◽  
Control Treatment ◽  
Yield Reduction ◽  
Maize Genotypes ◽  
Significant Yield ◽  
The Mean

Striga species cause significant yield loss in maize varying from 20 to 100%. The aim of the present study was to screen and identify maize genotypes with partial resistance to S. hermonthica (Sh) and S. asiatica (Sa) and compatible with Fusarium oxysporum f. sp. strigae (FOS), a biocontrol agent. Fifty-six maize genotypes were evaluated for resistance to Sh and Sa, and FOS compatibility. Results showed that FOS treatment significantly (p < 0.001) enhanced Striga management compared to the untreated control under both Sh and Sa infestations. The mean grain yield was reduced by 19.13% in FOS-untreated genotypes compared with a loss of 13.94% in the same genotypes treated with FOS under Sh infestation. Likewise, under Sa infestation, FOS-treated genotypes had a mean grain yield reduction of 18% while untreated genotypes had a mean loss of 21.4% compared to the control treatment. Overall, based on Striga emergence count, Striga host damage rating, grain yield and FOS compatibility, under Sh and Sa infestations, 23 maize genotypes carrying farmer preferred traits were identified. The genotypes are useful genetic materials in the development of Striga-resistant cultivars in Tanzania and related agro-ecologies.

scholarly journals Assessing the regulatory potential of transposable elements using chromatin accessibility profiles of maize transposons

Genetics ◽  
2020 ◽  
Vol 217 (1) ◽  
Author(s):  
Jaclyn M Noshay ◽  
Alexandre P Marand ◽  
Sarah N Anderson ◽  
Peng Zhou ◽  
Maria Katherine Mejia Guerra ◽  
...  
Keyword(s):  
Transposable Elements ◽  
Allelic Variation ◽  
Regulatory Elements ◽  
Chromatin Accessibility ◽  
Transcriptional Responses ◽  
Maize Genotypes ◽  
Show Evidence ◽  
Regulatory Potential ◽  
Dna Regulatory Elements ◽  
Accessible Chromatin

Abstract Transposable elements (TEs) have the potential to create regulatory variation both through the disruption of existing DNA regulatory elements and through the creation of novel DNA regulatory elements. In a species with a large genome, such as maize, many TEs interspersed with genes create opportunities for significant allelic variation due to TE presence/absence polymorphisms among individuals. We used information on putative regulatory elements in combination with knowledge about TE polymorphisms in maize to identify TE insertions that interrupt existing accessible chromatin regions (ACRs) in B73 as well as examples of polymorphic TEs that contain ACRs among four inbred lines of maize including B73, Mo17, W22, and PH207. The TE insertions in three other assembled maize genomes (Mo17, W22, or PH207) that interrupt ACRs that are present in the B73 genome can trigger changes to the chromatin, suggesting the potential for both genetic and epigenetic influences of these insertions. Nearly 20% of the ACRs located over 2 kb from the nearest gene are located within an annotated TE. These are regions of unmethylated DNA that show evidence for functional importance similar to ACRs that are not present within TEs. Using a large panel of maize genotypes, we tested if there is an association between the presence of TE insertions that interrupt, or carry, an ACR and the expression of nearby genes. While most TE polymorphisms are not associated with expression for nearby genes, the TEs that carry ACRs exhibit enrichment for being associated with higher expression of nearby genes, suggesting that these TEs may contribute novel regulatory elements. These analyses highlight the potential for a subset of TEs to rewire transcriptional responses in eukaryotic genomes.

Differential aluminium-impaired nutrient uptake along the root axis of two maize genotypes contrasting in resistance to aluminium

2014 ◽  
Vol 388 (1-2) ◽  
pp. 323-335 ◽  
Author(s):  
Eduardo D. Mariano ◽  
Aluisio S. Pinheiro ◽  
Edivaldo E. Garcia ◽  
Willem G. Keltjens ◽  
Renato A. Jorge ◽  
...  
Keyword(s):  
Nutrient Uptake ◽  
Maize Genotypes ◽  
Root Axis

scholarly journals Metabolite Profiling of Low-P Tolerant and Low-P Sensitive Maize Genotypes under Phosphorus Starvation and Restoration Conditions

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0129520 ◽  
Author(s):  
Arshid Hussain Ganie ◽  
Altaf Ahmad ◽  
Renu Pandey ◽  
Ibrahim M. Aref ◽  
Peerzada Yasir Yousuf ◽  
...  
Keyword(s):  
Metabolite Profiling ◽  
Phosphorus Starvation ◽  
Maize Genotypes

Tolerance to low temperature and paraquat-mediated oxidative stress in two maize genotypes

1999 ◽  
Vol 50 (333) ◽  
pp. 523-532 ◽  
Author(s):  
M. A. Iannelli ◽  
F. Van Breusegem ◽  
M. Van Montagu ◽  
D. Inze ◽  
A. Massacci
Keyword(s):  
Oxidative Stress ◽  
Low Temperature ◽  
Maize Genotypes
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