Article
Plant Sciences
Cristal Lopez-Gonzalez, Sheila Juarez-Colunga, Samuel Trachsel, Nayelli Marsch-Martinez, C. Stewart Gillmor, Axel Tiessen
Summary: This study investigates the carbon allocation between different tissues in maize at the early reproductive stages, revealing the key role of sugar transporters in sugar partitioning. The findings highlight the differences between the female inflorescence and the top internode of the stem during grain filling.
Article
Biochemistry & Molecular Biology
Gyedre dos Santos Araujo, Stelamaris de Oliveira Paula-Marinho, Sergimar Kennedy de Paiva Pinheiro, Emilio de Castro Miguel, Lineker de Sousa Lopes, Elton Camelo Marques, Humberto Henrique de Carvalho, Eneas Gomes-Filho
Summary: The study investigated the impact of foliar H2O2 priming on physiological, biochemical, and ultrastructural traits related to photosynthesis of salt-stressed plants. Salinity drastically affected photosynthetic parameters and structural chloroplast integrity, and increased reactive oxygen species contents promoting disturbance in plant metabolism. H2O2-pretreated plants improved photosynthetic performance by preserving stacking thylakoids and modulating metabolites contributing to osmotic balance and reduced oxidative stress.
Article
Agronomy
Jiri Kudrna, Marek Popov, Frantisek Hnilicka, Marie Lhotska, Veronika Zemanova, Pavla Vachova, Jan Kubes, Jana Ceska, Barbora Tunklova
Summary: Zea mays L. plants were exposed to different concentrations of acetaminophen (APAP) in a semi-controlled greenhouse. The study evaluated the impact of APAP contamination on photosynthetic rate, water potential, proline content, and levels of 5-methylcytosine (5 mC%). The results showed that high concentrations of APAP led to decreased transpiration rate, stomatal conductance, and water use efficiency. Additionally, an increase in 5 mC% levels was observed with APAP contamination, with a significant change observed between 600 mg L-1 and 800 mg L-1 of APAP treatments.
Article
Agronomy
Xiaocong Fan, Shizhan Chen, Wenjing Wu, Meifang Song, Guanghua Sun, Shuaitao Yao, Weimin Zhan, Lei Yan, Hongdan Li, Yanpei Zhang, Lijian Wang, Kang Zhang, Liangliang Jiang, Jianping Yang, Qinghua Yang
Summary: Maize growth and development are regulated by light quality, intensity, and photoperiod. ZmCRY1a has a relatively conservative function in regulating maize photomorphogenesis, and may guide new strategies for breeding high density-tolerant maize cultivars.
Article
Plant Sciences
Dominika Radzikowska, Przemyslaw Lukasz Kowalczewski, Monika Grzanka, Romana Glowicka-Woloszyn, Marcin Nowicki, Zuzanna Sawinska
Summary: Improvements in agricultural production are necessary due to the increasing human population and its impact on climate. Water scarcity limits maize yield in many regions. Seed mortars, particularly those containing succinate dehydrogenase inhibitors, can mitigate the negative effects of drought on maize development. This study compared 12 seed treatments and found that treatments with SDHI significantly improved root system development, photosynthesis, and chlorophyll fluorescence parameters in maize under drought stress.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Milan Kumar Lal, Nitin Sharma, Sandeep B. Adavi, Eshita Sharma, Muhammad Ahsan Altaf, Rahul Kumar Tiwari, Ravinder Kumar, Awadhesh Kumar, Abhijit Dey, Vijay Paul, Brajesh Singh, Madan Pal Singh
Summary: Elevated CO2 levels and high temperature stress can significantly impact the source-sink relationship and sugar metabolism in crops. This can result in compromised crop growth and quality attributes. This review aims to provide insights for future researchers on how crops adapt their source-sink processes under changing climate scenarios.
PLANT MOLECULAR BIOLOGY
(2022)
Review
Plant Sciences
Bruno E. Rojas, Tomas Tonetti, Carlos M. Figueroa
Summary: Trehalose 6-phosphate (Tre6P) is an intermediate of trehalose biosynthesis and plays a crucial role in linking growth and development to carbon status in plants. Most of our understanding of Tre6P metabolism and signaling pathways comes from studies on Arabidopsis thaliana, a model plant for C3 photosynthesis. However, limited research has been conducted on the molecular mechanisms of Tre6P regulation in C4 plants, which are economically important crops like maize, sorghum, and sugarcane. This review focuses on recent advancements in Tre6P metabolism in C4 species and raises important questions that need to be addressed to improve the yield of economically important crops.
CURRENT OPINION IN PLANT BIOLOGY
(2023)
Article
Plant Sciences
Seyedeh Batool Hassani, Mojgan Latifi, Sasan Aliniaeifard, Shabnam Sohrabi Bonab, Neda Nasiri Almanghadim, Sara Jafari, Elham Mohebbifar, Anahita Ahangir, Maryam Seifikalhor, Hassan Rezadoost, Massimo Bosacchi, Anshu Rastogi, Francoise Bernard
Summary: Cadmium is a heavy metal widely found in the environment due to its industrial uses. It has negative effects on plant growth and photosynthesis. An experiment on maize seedlings showed that the expression of ORDC increased under Cd exposure, but Put content only increased on day 15. Spermidine and Spermine levels were reduced on day 6 but increased on day 12. Cd started accumulating in the roots on day 6 and in the shoot part on day 15. Different miRNAs may regulate polyamines in maize under Cd toxicity.
Article
Plant Sciences
Betty M. Mamani-Huarcaya, Agustin Gonzalez-Fontes, M. Teresa Navarro-Gochicoa, Juan J. Camacho-Cristobal, Carlos J. Ceacero, M. Begona Herrera-Rodriguez, Oscar Fernandez Cutire, Jesus Rexach
Summary: In this study, the response of two local maize landraces from Tacna, Peru, to boron toxicity was analyzed. The results showed that Sama had lower soluble boron content in its leaves and roots compared to Pachia under high boron concentrations, which was attributed to its higher expression levels of boron efflux transporters. As a result, Sama exhibited reduced leaf damage and higher photosynthetic and growth parameters under boron toxicity conditions.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
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
Juan Hu, Baizhao Ren, Shuting Dong, Peng Liu, Bin Zhao, Jiwang Zhang
Summary: The research shows that the application of 6-BA can enhance the tolerance of summer maize to waterlogging, improve chloroplast ultrastructure and photosynthetic performance, ultimately increasing photosynthesis rate and grain yield.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Plant Sciences
Xiuru Dai, Xiaoyu Tu, Baijuan Du, Pengfei Dong, Shilei Sun, Xianglan Wang, Jing Sun, Gang Li, Tiegang Lu, Silin Zhong, Pinghua Li
Summary: Through analyzing BS and M cells isolated from maize leaves using multiple techniques, it was found that chromatin accessibility coordinates with epigenetic features to regulate gene expression, and the preferential expression of genes in specific cell types is finely tuned by multiple chromatin features. This coordination is critical in ensuring the cell type-specific function of key C-4 genes.
Article
Plant Sciences
Min Xu, Xiaomin Tian, Tingting Ku, Guangyuan Wang, Enying Zhang
Summary: Lysine malonylation is an important post-translational modification that plays a regulatory role in maize. The study provided a comprehensive survey of the malonylome in maize, revealing its essential regulatory role in photosynthesis and carbon fixation.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Samta Gupta, Sarda Devi Thokchom, Rupam Kapoor
Summary: This study investigated the ability of an AM fungus, Rhizophagus intraradices, to mitigate arsenic-induced negative effects on photosynthesis and sugar metabolism in wheat plants. The results showed that AM symbiosis not only promoted plant growth but also restored arsenic-mediated impairments in plant physiology, improving photosynthetic pigments, gas exchange parameters, and sugar metabolism. Overall, the study highlights the potential of R. intraradices in alleviating arsenic-induced physiological disturbances in wheat plants.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Maryam Rahimi Jahangirlou, Gholam Abbas Akbari, Iraj Alahdadi, Saeid Soufizadeh, David Parsons
Summary: This study evaluated the concentration and composition of starch, protein, and oil in maize grain in response to different planting dates, irrigation intervals, and nitrogen rates. High nitrogen fertilization increased protein and nonessential amino acids, while high irrigation combined with high nitrogen rates increased oil content. The findings highlight the complex relationship between various factors and their impact on maize grain quality characteristics.