Article
Plant Sciences
Luis Antonio Lopez, John Ochieng, Mario Pacheco, Leocadio Martinez, Hamilton Amoshe Omar, Manje Gowda, Boddupalli M. Prasanna, Kanwarpal S. Dhugga, Vijay Chaikam
Summary: Doubled haploid (DH) technology is crucial for maize breeding programs, as it expedites inbred line development and improves breeding efficiency. Unlike other plant species, maize DH production uses a simple and efficient in vivo haploid induction method. However, it requires two complete crop cycles for DH line generation, which can be time-consuming.
Article
Plant Sciences
Abil Dermail, Thomas Lubberstedt, Willy Bayuardi Suwarno, Sompong Chankaew, Kamol Lertrat, Vinitchan Ruanjaichon, Khundej Suriharn
Summary: This study aimed to evaluate the combining ability, line per se performance, and hybrid performance of three genetic pools in terms of haploid induction rate (HIR), R1-nj seed set, and agronomic traits. The results showed that the temperate inducer BHI306 was the best general combiner for HIR and R1-nj seed set.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Hao Wu, Guosheng Li, Junpeng Zhan, Shanshan Zhang, Brandon D. Beall, Ramin Yadegari, Philip W. Becraft
Summary: This study discovered an intrachromosomal rearrangement between the r1 and nkd2 genes, and identified the effects of related expression patterns and mutant alleles on gene expression. Furthermore, it revealed that the regulatory sequences of the nkd2 gene may influence the expression of the r1 gene.
Article
Agronomy
R. K. Khulbe, A. Pattanayak, Vivek Panday, Devender Sharma
Summary: Doubled haploid (DH) technology is becoming increasingly important in maize breeding programs worldwide. However, the presence of anthocyanin inhibitor genes may limit the use of a popular DH production method. This study found that the combination of scutellum pigmentation and dorsal basal pigmentation can be used to classify seeds in induction crosses, but further evaluation is needed in a larger germplasm set.
CEREAL RESEARCH COMMUNICATIONS
(2022)
Article
Plant Sciences
Chen Chen, Xiaoqing Liu, Suzhen Li, Chenxu Liu, Yuling Zhang, Lili Luo, Liqing Miao, Wenzhu Yang, Zijian Xiao, Yu Zhong, Jiansheng Li, Rumei Chen, Shaojiang Chen
Summary: We developed an efficient and accurate haploid embryo identification marker through co-expression of two transcription factor genes and introduced it into a haploid inducer line. The new haploid inducer identified haploids earlier and with higher accuracy compared to the conventional method. Additionally, an upgraded anthocyanin marker was developed to identify haploids from diploids. This system provides technical support for large-scale doubled haploid line production.
Article
Plant Sciences
Sarah Lipps, Alexander E. Lipka, Santiago Mideros, Tiffany Jamann
Summary: This study aimed to investigate the mechanisms of resistance to northern corn leaf blight (NCLB) in maize. Significant markers and metabolic pathways associated with NCLB resistance were identified, and the role of ethylene in resistance was confirmed.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Nisrita Gain, Rashmi Chhabra, Shivani Chandra, Rajkumar U. Zunjare, Suman Dutta, Gulab Chand, Konsam Sarika, Elangbam L. Devi, Aruna Kumar, Jayanthi Madhavan, Vignesh Muthusamy, Firoz Hossain
Summary: In this study, 178 subtropically-adapted maize inbreds were crossed with two R1-nj donors to examine their anthocyanin colouration. It was found that 76.4% of the inbreds showed purple colour in the endosperm, while 62.9% showed colour in the scutellum. Two C1-I specific breeder-friendly markers were developed, which predicted the presence of C1-I allele with high effectiveness.
MOLECULAR BIOLOGY REPORTS
(2023)
Article
Agronomy
Shankarappa Varalakshmi, Smrutishree Sahoo, Narendra Kumar Singh, Navneet Pareek, Priya Garkoti, Velmurugan Senthilkumar, Shruti Kashyap, Jai Prakash Jaiswal, Sherry Rachel Jacob, Amol N. Nankar
Summary: This study investigates the protein content and its association with DNA markers in different maize accessions. It shows that wild relatives of maize have higher protein content and can be used as potential donor parents to increase the protein content of maize.
Article
Plant Sciences
Zhengjie Chen, Dengguo Tang, Jixing Ni, Peng Li, Le Wang, Jinhong Zhou, Chenyang Li, Hai Lan, Lujiang Li, Jian Liu
Summary: In this study, high-density and polymorphic KASP SNP markers were developed based on RNA-Seq data of 368 maize inbred lines. A total of 71,311 KASP SNP markers were identified and mapped to 16,161 genes, showing accurate and high polymorphism. These markers can be valuable for map-based cloning of QTL/genes and marker-assisted selection in maize, and the method used in maize can be applied in other species as well.
Article
Agronomy
Yun-Syuan Jhong, Wen-Shin Lin, Tien-Joung Yiu, Yuan-Chih Su, Bo-Jein Kuo
Summary: The study evaluated different sampling schemes for determining adventitious GM content in small maize fields in Taiwan. The findings showed that the six-transect method, V-shaped transect method, and JM method performed comparably to simple random sampling in predicting cross-pollination rates. These results can be used as a reference for monitoring pollen dispersal tendencies in maize in countries with smallholder farming systems.
GM CROPS & FOOD-BIOTECHNOLOGY IN AGRICULTURE AND THE FOOD CHAIN
(2021)
Article
Plant Sciences
Juan P. Valenzuela-Apodaca, Abraham Cruz-Mendivil, Grethel P. Gaytan-Pinzon, Hervey Rodriguez-Gonzalez, Luis A. Peinado-Fuentes, Eduardo Sandoval-Castro, Carlos L. Calderon-Vazquez
Summary: This study identified and mapped SNPs associated with oil and protein content in maize. Favorable alleles for these SNPs were found in maize lines with high oil or high protein content. These novel SNPs can be used for marker-assisted breeding of high oil and high protein maize in subtropical regions.
TROPICAL PLANT BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Shamseldeen Eltaher, Mostafa Hashem, Asmaa A. M. Ahmed, P. Stephen Baenziger, Andreas Boerner, Ahmed Sallam
Summary: With the advances in DNA markers, KASP markers have the potential to accelerate breeding programs and improve drought tolerance. In this study, two previously reported KASP markers, TaDreb-B1 and 1-FEH w3, were investigated for marker-assisted selection of drought tolerance. The results showed that TaDreb-B1 marker provided better consistency in improving drought tolerance than 1-FEH w3.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agronomy
Vinitchan Ruanjaichon, Khin Kyawt Yin, Burin Thunnom, Kanogporn Khammona, Khundej Suriharn, Sakunkan Simla, Chalong Kerdsri, Wanchana Aesomnuk, Arweewut Yongsuwan, Naraporn Chaomueang, Nay Nay Oo, Jintana Unartngam, Siwaret Arikit, Samart Wanchana, Theerayut Toojinda
Summary: In this study, a genome-wide association study (GWAS) was conducted to identify loci associated with the waxy kernel phenotype in maize. A marker was developed and validated, which had a significant association with the amylose content and could distinguish between waxy maize and sweet maize lines. This marker will be useful for maize breeding programs and can help accelerate the breeding programs for hybrid maize combining sweetness and the waxy trait.
Article
Chemistry, Multidisciplinary
Niko Tratnik, Slavko Radenkovic, Izudin Redzepovic, Matjaz Finsgar, Petra Zigert Pletersek
Summary: This paper investigates the prediction of corrosion inhibition effectiveness using molecular descriptors. Weighted molecular graphs are used to model corrosion inhibitors, and various topological indices are calculated. The correlations between these indices and corrosion inhibition effectiveness are examined, and the best predictors are applied to obtain linear regression models.
CROATICA CHEMICA ACTA
(2022)
Article
Medicine, General & Internal
Giorgi Maziashvili, Kathereene Juliana, Vivek Siva Subramania Pillai Kanimozhi, Giorgi Javakhishvili, Vakhtang Gurabanidze, Tinatin Gagua, Tamar Maziashvili, Khatuna Lomouri
Summary: The study investigated the relationship between preeclampsia and blood levels of inflammatory markers such as neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammatory index (SII) in the first trimester of pregnancy. Age did not significantly affect NLR, MLR, or SII levels, but there was a significant difference in PLR levels between different age groups. The study also found differences in MLR, PLR, and SII levels between preeclampsia patients and healthy patients in different age groups.
CUREUS JOURNAL OF MEDICAL SCIENCE
(2023)
Article
Agronomy
William D. Batchelor, L. M. Suresh, Xiaoxing Zhen, Yoseph Beyene, Mwaura Wilson, Gideon Kruseman, Boddupalli Prasanna
Article
Plant Sciences
Vijay Chaikam, Manje Gowda, Leocadio Martinez, John Ochieng, Hamilton Amoshe Omar, B. M. Prasanna
Article
Plant Sciences
Vijay Chaikam, Manje Gowda, Leocadio Martinez, Gregorio Alvarado Beltran, Xuecai Zhang, Boddupalli M. Prasanna
Review
Agronomy
Boddupalli M. Prasanna, Jill E. Cairns, P. H. Zaidi, Yoseph Beyene, Dan Makumbi, Manje Gowda, Cosmos Magorokosho, Mainassara Zaman-Allah, Mike Olsen, Aparna Das, Mosisa Worku, James Gethi, B. S. Vivek, Sudha K. Nair, Zerka Rashid, M. T. Vinayan, AbduRahman Beshir Issa, Felix San Vicente, Thanda Dhliwayo, Xuecai Zhang
Summary: Intensive breeding efforts and public-private partnerships have led to an increase in genetic gains, resulting in the deployment of elite climate-resilient maize cultivars in stress-prone environments. These efforts have successfully developed and deployed a variety of stress-tolerant maize cultivars in sub-Saharan Africa, Asia, and Latin America, playing a critical role in improving the livelihoods of smallholder farmers in the tropics facing climate-induced stresses.
THEORETICAL AND APPLIED GENETICS
(2021)
Article
Genetics & Heredity
Isaac Kamweru, Bruce Y. Anani, Yoseph Beyene, Dan Makumbi, Victor O. Adetimirin, Boddupalli M. Prasanna, Manje Gowda
Summary: The study reveals the genetic basis of resistance to the fall armyworm in maize. It shows that leaf damage scores have moderate heritability and are negatively correlated with grain yield. The genome-wide association study identifies several candidate genes associated with resistance.
Article
Genetics & Heredity
Kassahun Sadessa, Yoseph Beyene, Beatrice E. Ifie, L. M. Suresh, Michael S. Olsen, Veronica Ogugo, Dagne Wegary, Pangirayi Tongoona, Eric Danquah, Samuel Kwame Offei, Boddupalli M. Prasanna, Manje Gowda
Summary: In this study, 879 doubled haploid (DH) lines derived from 26 biparental populations were evaluated for agronomic traits and disease resistance. Genome-wide association study (GWAS) identified several SNPs associated with grain yield, anthesis date, height, and disease resistance. Genomic prediction showed moderate-to-high accuracy. These findings provide valuable insights into the genetic basis of MLN resistance, grain yield, and other agronomic traits.
Article
Agronomy
Berhanu Tadesse Ertiro, Biswanath Das, Titus Kosgei, Amsal Tarekegne Tesfaye, Maryke T. Labuschagne, Mosisa Worku, Michael S. Olsen, Vijay Chaikam, Manje Gowda
Summary: Breeding for nitrogen use efficiency (NUE) is crucial for addressing food insecurity and grain quality, particularly protein. Low soil nitrogen stress negatively affects grain yield, kernel weight, and protein content, but positively affects starch content. The correlation between grain yield and quality traits is weak under both soil nitrogen conditions.
Article
Agronomy
Luka A. O. Awata, Beatrice E. Ifie, Eric Danquah, Pangirayi Tongoona, L. M. Suresh, Manje Gowda, Philip W. Marchelo-Dragga, Chelang'At Sitonik, Michael Olsen, Boddupalli M. Prasanna, McDonald B. Jumbo
Summary: The study compared the effectiveness of marker-assisted backcross (MABC) and doubled haploid (DH) methods in transferring genes for resistance to maize lethal necrosis (MLN). The results indicated that DH populations outperformed MABC populations in terms of resistance expression and heritability.
JOURNAL OF CROP IMPROVEMENT
(2022)
Article
Plant Sciences
Xuedong Liu, Sijia Liu, Xi Chen, Boddupalli M. Prasanna, Zongfu Ni, Xiangdong Li, Yueqiu He, Zaifeng Fan, Tao Zhou
Summary: Maize employs a signaling mechanism mediated by microR167-auxin response factor 3 and 30-polyamine oxidase 1 for defense and counterdefense against maize chlorotic mottle virus. The study showed that Zma-miR167 positively modulates the degree of resistance to MCMV by targeting ZmARF3 and ZmARF30, which negatively regulate resistance. However, MCMV uses p31 protein to counteract Zma-miR167-mediated defense. The results reveal the role of Zma-miR167-ZmARF3/30 module in restricting MCMV infection.
Review
Agronomy
Boddupalli M. Prasanna, Anani Bruce, Yoseph Beyene, Dan Makumbi, Manje Gowda, Muhammad Asim, Samuel Martinelli, Graham P. Head, Srinivas Parimi
Summary: Sustainable control of fall armyworm (FAW) requires implementation of effective integrated pest management strategies, with host plant resistance as a key component. Significant opportunities exist for developing and deploying elite maize cultivars with native genetic resistance and/or transgenic resistance for FAW control in both Africa and Asia.
THEORETICAL AND APPLIED GENETICS
(2022)
Review
Food Science & Technology
Olaf Erenstein, Moti Jaleta, Kai Sonder, Khondoker Mottaleb, B. M. Prasanna
Summary: Maize has played a significant role in global agri-food systems and its production has been rapidly increasing, making it the leading cereal in terms of volume. Its versatile uses as food, feed, and non-food products make it a globally important crop. The ongoing transformation of agri-food systems in the Global South requires attention to inclusiveness and sustainability, with further investments needed in research and development to enhance the role of maize in food and livelihood security while staying within planetary boundaries.
Article
Food Science & Technology
Boddupalli M. Prasanna, Monica Carvajal-Yepes, P. Lava Kumar, Nozomi Kawarazuka, Yanyan Liu, Annet Abenakyo Mulema, Steven McCutcheon, Xenina Ibabao
Summary: Globalization and changing climates have worsened the occurrence and impacts of transboundary pests, leading to the emergence of new threats. Many low- and middle-income countries in Africa, Asia, and Latin America are not adequately prepared in terms of surveillance, diagnostics, and deployment of plant health solutions. A comprehensive approach that includes globally coordinated systems, epidemiological modeling, and integrated management strategies is needed to effectively counter these threats.
Article
Multidisciplinary Sciences
Boddupalli M. Prasanna, Juan Burgueno, Yoseph Beyene, Dan Makumbi, Godfrey Asea, Vincent Woyengo, Amsal Tarekegne, Cosmos Magorokosho, Dagne Wegary, Thokozile Ndhlela, Mainassara Zaman-Allah, Prince M. Matova, Kabamba Mwansa, Kingstone Mashingaidze, Pedro Fato, Adefris Teklewold, B. S. Vivek, P. H. Zaidi, M. T. Vinayan, Nagesh Patne, Sujay Rakshit, Ramesh Kumar, S. L. Jat, S. B. Singh, Prakash H. Kuchanur, H. C. Lohithaswa, N. K. Singh, K. B. Koirala, Salahuddin Ahmed, Felix San Vicente, Thanda Dhliwayo, Jill E. Cairns
Summary: Fostering a culture of continuous improvement is crucial in enhancing efficiency and accountability in breeding pipelines. This global study estimates the genetic trends of tropical maize breeding pipelines at CIMMYT over the past decade. The study shows significant genetic trends in grain yield across different regions, with up to 138 kg ha(-1) yr(-1) in ESA, 118 kg ha(-1) yr(-1) in South Asia, and 143 kg ha(-1) yr(-1) in Latin America.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Jingtao Qu, Alberto A. Chassaigne-Ricciulli, Fengling Fu, Haoqiang Yu, Kate Dreher, Sudha K. Nair, Manje Gowda, Yoseph Beyene, Dan Makumbi, Thanda Dhliwayo, Felix San Vicente, Michael Olsen, Boddupalli M. Prasanna, Wanchen Li, Xuecai Zhang
Summary: This study analyzed the genetic diversity and quality control issues of CIMMYT maize lines (CMLs) using genotyping and genetic distance analysis. The results showed that CMLs have high genetic diversity, but there are some purity and labeling issues. Additionally, the study found a clear genetic divergence between temperate and tropical maize.
Article
Plant Sciences
Luis Antonio Lopez, John Ochieng, Mario Pacheco, Leocadio Martinez, Hamilton Amoshe Omar, Manje Gowda, Boddupalli M. Prasanna, Kanwarpal S. Dhugga, Vijay Chaikam
Summary: Doubled haploid (DH) technology is crucial for maize breeding programs, as it expedites inbred line development and improves breeding efficiency. Unlike other plant species, maize DH production uses a simple and efficient in vivo haploid induction method. However, it requires two complete crop cycles for DH line generation, which can be time-consuming.