Article
Agronomy
Qiang Yi, Ana Lopez-Malvar, Lorena Alvarez-Iglesias, Maria Cinta Romay, Pedro Revilla
Summary: This study aimed to elucidate the genetic basis of photosynthesis-related parameters in maize by evaluating a large panel of 731 inbred lines. The results showed significant phenotypic and genotypic variations in this panel, along with fluctuations in heritability for various traits. Twenty-seven minor Quantitative Trait Loci (QTL) were detected, predominantly on chromosomes 5 and 8.
Article
Plant Sciences
Olatise Oluwaseun, Baffour Badu-Apraku, Moses Adebayo, Adamu Masari Abubakar
Summary: This study aimed to analyze the impact of PVA hybrids on malnutrition and food security, and identify the most stable and productive hybrids. Factors such as different environments were taken into consideration in the selection of inbreds and hybridization, and the performance of the hybrids was evaluated in diverse environments.
Review
Biochemistry & Molecular Biology
Zi-Chang Jia, Xue Yang, Xuan-Xuan Hou, Yong-Xin Nie, Jian Wu
Summary: This review summarizes the importance of alternative splicing in regulating gene expression, particularly in plant responses to abiotic stresses and growth and development processes. It also presents the application of genome-wide association analysis in studying alternatively spliced variants.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agronomy
Povilas Drulis, Zita Kriauciuniene, Vytautas Liakas
Summary: After evaluating ecological and economic aspects, it is predicted that the use of urease inhibitors and biological preparations can increase nitrogen use efficiency and reduce the risk of nutrient leaching. Field experiments showed that the combination of urease inhibitors and biological preparations with nitrogen fertilizers significantly increased dry matter yield of maize. Lower nitrogen fertilizer rates combined with these additives can achieve the same maize productivity as higher nitrogen fertilizer rates.
Article
Agronomy
Alberto A. Chassaigne-Ricciulli, Leopoldo E. Mendoza-Onofre, Leobigildo Cordova-Tellez, Aquiles Carballo-Carballo, Felix M. San Vicente-Garcia, Thanda Dhliwayo
Summary: The study found that planting density had little impact on maize seed yield, while male inbred lines and single cross combinations with early maturity and high yield can increase production. In tropical lowlands, planting dates for parents and accumulated GDD information are important factors influencing seed yield of three-way cross hybrids.
Article
Plant Sciences
Xin Sun, Si-Rong Huang, Jun-Bo Du, Xiao-Chun Wang, Wen-Yu Yang
Summary: Under heterogeneous light conditions, the photosynthetic performance of maize leaves is influenced by different cultivars and treatments, with malate and NADP-malic enzyme playing crucial roles in C-4 photosynthesis. The diffusion and decarboxylation of malate are key factors affecting photosynthetic efficiency in maize leaves.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Plant Sciences
Alimatu Sadia Osuman, Baffour Badu-Apraku, Beatrice Elohor Ifie, Charles Nelimor, Pangirayi Tongoona, Ebenezer Obeng-Bio, Benjamin Karikari, Eric Yirenkyi Danquah
Summary: Information on combining ability and heterotic patterns of stress-tolerant inbred lines is crucial for developing climate-resilient maize hybrids. This study evaluated 150 single cross hybrids under different stress conditions, identified best testers, and classified inbred lines into heterotic groups. The best hybrids significantly out-performed the best controls in terms of yield under various stress conditions, indicating their potential for commercialization in sub-Saharan Africa.
Article
Agronomy
Daniela Simoes, Eugenio Diogo, Eugenia de Andrade
Summary: Maize is an important staple crop worldwide, but it is highly susceptible to fungal infections, particularly by certain species of Fusarium. These infections can lead to significant reductions in yield and quality, as well as the production of mycotoxins. In Portugal and similar Mediterranean countries, F. verticillioides and F. subglutinans are the most common species infecting maize. However, the incidence of diseases and mycotoxin levels have increased, suggesting the presence of other mycotoxigenic Fusarium species or changes in exogenous conditions. Monitoring Fusarium species occurrence in the field is crucial to address these threats. A recent survey in Portugal identified the presence of F. andiyazi in maize crops for the first time, highlighting the need for further studies to prevent its spread and mitigate its impact on maize production and farmers' livelihoods.
Article
Plant Sciences
Saad N. AL-Kahtani, Mohamed M. Kamara, El-Kazafy A. Taha, Nabil El-Wakeil, Ahmed Aljabr, Kareem M. Mousa
Summary: The pink stem borer (PSB), the purple-lined borer (PLB), and the European corn borer are the most devastating insect pests in maize production in the Mediterranean region. The frequent use of chemical insecticides has resulted in resistance and negative environmental impacts. Developing resistant and high-yielding hybrids is the best approach to tackle these pests.
Article
Microbiology
Luana Rainieri Massucato, Suelen Regina de Araujo Almeida, Mayara Barbosa Silva, Mirela Mosela, Douglas Mariani Zeffa, Alison Fernando Nogueira, Renato Barros de Lima Filho, Silas Mian, Allan Yukio Higashi, Gustavo Manoel Teixeira, Gabriel Danilo Shimizu, Renata Mussoi Giacomin, Ricardo Cancio Fendrich, Marcos Ventura Faria, Carlos Alberto Scapim, Leandro Simoes Azeredo Goncalves
Summary: This study aimed to select bacterial strains capable of solubilizing phosphorous and promoting maize growth, and to determine their potential application in Brazilian agriculture. The results showed that selected strains significantly increased maize root growth and shoot P content, with Bacillus megaterium and Lysinibacillus sp. exhibiting the highest yield increments.
Article
Plant Sciences
Julio S. S. Bernal, Anjel M. M. Helms, Ana A. A. Fontes-Puebla, Thomas J. J. DeWitt, Michael V. V. Kolomiets, John M. M. Grunseich
Summary: Domestication has a greater impact on the abundances and diversity of maize root volatiles than northward spread and modern breeding. The preference of the herbivore for maize roots is correlated with volatile diversity and herbivore resistance. Changes in abundances of individual volatiles are evident at the level of volatile groups, and maize domestication has the greatest effects.
Article
Agronomy
Jingwei Yan, Jing Li, Heping Zhang, Ya Liu, Aying Zhang
Summary: This study identified the function of the Zea mays WRKY transcription factor, ZmWRKY104, in salt stress response. ZmWRKY104 increases the salt tolerance of maize by regulating the expression of ZmSOD4.
Article
Plant Sciences
Alden C. Perkins, Jonathan P. Lynch
Summary: The research shows that seminal roots can improve the acquisition of nitrogen and phosphorus in maize seedlings, with increased seed size associated with maize domestication possibly facilitating the increase in seminal root number. The study also suggests that the optimal number of seminal roots for nutrient acquisition in teosinte is constrained by its limited seed carbohydrate reserves.
Article
Biochemistry & Molecular Biology
Takaki Yamauchi, Mikio Nakazono
Summary: Aerenchyma formation is crucial for oxygen diffusion in rice roots under low-oxygen conditions. Both ethylene and auxin hormones are involved in regulating aerenchyma formation in rice roots. The study found that ethylene-dependent aerenchyma formation is faster and rice roots have more aerenchyma, enabling efficient oxygen diffusion under low-oxygen conditions. Additionally, in rice, the expression levels of ethylene biosynthesis and responsive genes rapidly increase after root-cell emergence, contributing to the rapid induction of ethylene-dependent aerenchyma formation.
Article
Biochemistry & Molecular Biology
Silin Wu, Steffen Greiner, Chongjian Ma, Jiaxin Zhong, Xiaojia Huang, Thomas Rausch, Hongbo Zhao
Summary: A Zm-6&1-FEH2 enzyme related to cell wall invertase has been identified in maize, showing substrate specificity for inulin and levan and being localized in the apoplast. The enzyme can hydrolyze 1-kestotriose, an oligofructan, and its expression is influenced by plant development, drought, and abscisic acid.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Agronomy
Antoine Allier, Simon Teyssedre, Christina Lehermeier, Alain Charcosset, Laurence Moreau
THEORETICAL AND APPLIED GENETICS
(2020)
Article
Genetics & Heredity
Simon Rio, Tristan Mary-Huard, Laurence Moreau, Cyril Bauland, Carine Palaffre, Delphine Madur, Valerie Combes, Alain Charcosset
Article
Agronomy
A. I. Seye, C. Bauland, A. Charcosset, L. Moreau
THEORETICAL AND APPLIED GENETICS
(2020)
Article
Genetics & Heredity
Simon Rio, Laurence Moreau, Alain Charcosset, Tristan Mary-Huard
Article
Biochemistry & Molecular Biology
Melisande Blein-Nicolas, Sandra Sylvia Negro, Thierry Balliau, Claude Welcker, Llorenc Cabrera-Bosquet, Stephane Dimitri Nicolas, Alain Charcosset, Michel Zivy
Article
Plant Sciences
Mariangela Arca, Tristan Mary-Huard, Brigitte Gouesnard, Aurelie Berard, Cyril Bauland, Valerie Combes, Delphine Madur, Alain Charcosset, Stephane D. Nicolas
Summary: This study developed a high-throughput and cost-saving DNA bulk approach for genotyping landraces, which provides accurate allelic frequency estimations. By testing 23,412 SNPs, the genetic distances between American and European maize diversity estimated from the SNP data highly correlated with those obtained from simple sequence repeats.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemical Research Methods
Fabien Laporte, Alain Charcosset, Tristan Mary-Huard
Summary: Since their introduction in the 50's, variance component mixed models have been widely used. ReML estimation is the most popular procedure for inferring the variance components, and there is a need for computational improvements due to increasing dataset sizes and model complexities. In this paper, a Min-Max algorithm for ReML inference is presented and compared to other algorithms in statistical genetics. The MM algorithm ranks among the top 2 methods in almost all settings and is more versatile than its competitors.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Genetics & Heredity
Morgane Roth, Aurelien Beugnot, Tristan Mary-Huard, Laurence Moreau, Alain Charcosset, Julie B. Fievet
Summary: This study aimed to test methodological developments for modeling inbreeding and nonadditive effects, and found that inbreeding has a strong impact on plant traits and prediction models that include inbreeding and nonadditive parameters can improve prediction accuracy.
Article
Agronomy
Alizarine Lorenzi, Cyril Bauland, Tristan Mary-Huard, Sophie Pin, Carine Palaffre, Colin Guillaume, Christina Lehermeier, Alain Charcosset, Laurence Moreau
Summary: Calibrating a genomic selection model on a sparse factorial design instead of tester designs is advantageous for some traits in maize breeding. The study shows that sparse factorial designs can be used effectively to predict the best hybrid combinations between inbred lines in genomic hybrid breeding.
THEORETICAL AND APPLIED GENETICS
(2022)
Article
Biotechnology & Applied Microbiology
Mariangela Arca, Brigitte Gouesnard, Tristan Mary-Huard, Marie-Christine Le Paslier, Cyril Bauland, Valerie Combes, Delphine Madur, Alain Charcosset, Stephane D. Nicolas
Summary: In this study, a novel DNA pooling strategy was used to identify promising traditional varieties and genomic regions to enhance the genetic diversity of modern breeds. The research found that most traditional varieties do not have closely related lines and that only 10 varieties account for more than half of the total contribution to inbred lines. Comparison with more advanced breeding cycles showed that landraces with limited contributions enriched the haplotype diversity of reference inbred lines more than those with a high contribution.
PLANT BIOTECHNOLOGY JOURNAL
(2023)
Article
Plant Sciences
Louai Rishmawi, Fabrice Bauget, Virginia Protto, Cyril Bauland, Philippe Nacry, Christophe Maurel
Summary: The water uptake capacities of maize are influenced by the root system architecture and hydraulic capacity, leading to a wide diversity in root structure and function. The natural variation in the anatomy, system architecture, and hydraulic capacity of maize roots reveals a high diversity of water uptake strategies in this species.
Article
Multidisciplinary Sciences
Dimitri Sanchez, Sarah Ben Sadoun, Tristan Mary-Huard, Antoine Allier, Laurence Moreau, Alain Charcosset
Summary: The genetic progress of crop plants requires effective management of genetic diversity and utilization of genetic resources. Creating bridging populations and incorporating improved donors into elite programs can efficiently sustain genetic gain and maintain neutral diversity. Phenotype-based selection and global calibration of genomic prediction models are recommended for enhanced breeding strategies.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)