Calcium stress can negatively impact plant growth, prompting plants to respond by mitigating this effect. However, the specific mechanisms underlying this response remain unclear. In this study, we used non-targeted metabolomics and transcriptomics to investigate the response mechanisms of leaves under varying degrees of calcium stress. Results revealed that calcium stress led to wilt in young leaves. When calcium stress exceeds the tolerance threshold of the leaf, it results in wilting of mature leaves, rupture of chloroplasts in palisade tissue, and extensive wrinkling and breakage of leaf cells. Transcriptomic analysis indicated that calcium stress inhibited photosynthesis by suppressing the expression of genes related to photosynthetic system II and electron transport. Leaf cells activate phenylpropanoid biosynthesis, flavonoid biosynthesis, and Vitamin B6 metabolism to resist calcium stress. When calcium accumulation gradually surpassed the tolerance threshold of the cells, this results in failure of conventional anti-calcium stress mechanisms, leading to cell death. Furthermore, excessive calcium stress inhibits the expression of CNGC and anti-pathogen genes. The results of the metabolomics study showed that five key metabolites increased in response to calcium stress, which may play an important role in countering calcium stress. This study provides insights into the response of leaves to different levels of calcium stress, which could provide a theoretical basis for cultivating in karst areas and enhance our understanding of plant responses to calcium stress.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11394862 | PMC |
| http://dx.doi.org/10.3390/ijms25179293 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Defense to in groundnut ( L.) is associated with vascular tissue compactness and expression of genes coding for pathogenesis-related (PR) proteins.
3 Biotech
February 2025
Junagadh Agricultural University, Junagadh, Gujarat 362001 India.
Unlabelled: is the causal agent of stem rot of many crops, a highly destructive disease of groundnut ( L). Based on evidence that many groundnut genotypes have an inherent ability to tolerate the pathogenicity of species, twenty-two genotypes of groundnut were screened against infection in sick plot field experiment; four genotypes, namely CS19, GG16, GG20 and TG37A, were selected as being the most tolerant, moderately tolerant, susceptible and highly susceptible to stem rot, respectively. Stem tissues (1cm from the collar region) from infected and healthy plants of four selected genotypes differing in susceptibility were examined using a scanning electron microscope (SEM).
View Article and Find Full Text PDFL-3-n-butylphthalide alleviates intermittent alcohol exposure-induced hypothalamic cell apoptosis via inhibiting the IRE1α-ASK1-JNK pathway in adolescent rats.
Curr Res Toxicol
December 2024
Henan Key Laboratory of Biological Psychiatry (Xinxiang Medical University), The Second Affiliated Hospital of Xinxiang Medical University (Henan Mental Hospital), Xinxiang 453002, Henan, China.
Exposure to alcohol can induce different degrees of damage to various tissues and organs, and brain is the most vulnerable part affected by alcohol. However, there is no detailed report on whether intermittent alcohol exposure can result in pathological changes in the hypothalamus of adolescent rats and the detailed mechanism. This study investigated pathological changes in the hypothalamus, probed the levels of inflammatory factors, and detected the expression of proteins related to endoplasmic reticulum stress (ERS) to determine whether ERS is involved in the injury process of the hypothalamus and the protective mechanism of L-3-n-butylphthalide (L-NBP).
View Article and Find Full Text PDFAu-Functionalized Metal-Organic Framework Coordinated Nanotherapeutics for Substrate Self-Supplied Parallel Catalytic and Calcium-Overload-Mediated Therapy of Cancer.
ACS Appl Bio Mater
January 2025
Collaborative Innovation Center of Tumor Marker Detection Technology, Equipment and Diagnosis Therapy Integration in Universities of Shandong, Shandong Province Key Laboratory of Detection Technology for Tumor Makers, College of Medicine, Linyi University, Linyi 276005, China.
The multiple enzymatic properties of the Au-modified metal-organic framework (Au-MOFs) have made it a functional catalytic system for antitumor treatment. However, in the face of insufficient catalytic substrates in tumor tissue, it is still impossible to achieve efficient treatment of tumors. Herein, Au-MOFs loaded with hyaluronic acid (HA)-modified calcium peroxide nanoparticles (CaO NPs) were used to construct a nanozyme (Au-MOF/CaO/HA) for substrate self-supplied and parallel catalytic/calcium-overload-mediated therapy of cancer.
View Article and Find Full Text PDFMitochondrial Calcium Homeostasis and Atrial Fibrillation: Mechanisms and Therapeutic Strategies Review.
Curr Probl Cardiol
January 2025
Department of Cardiology, Lanzhou University Second Hospital, Lanzhou, China. Electronic address:
Atrial fibrillation (AF) is tightly linked to mitochondrial dysfunction, calcium (Ca²⁺) imbalance, and oxidative stress. Mitochondrial Ca²⁺ is essential for regulating metabolic enzymes, maintaining the tricarboxylic acid (TCA) cycle, supporting the electron transport chain (ETC), and producing ATP. Additionally, Ca²⁺ modulates oxidative balance by regulating antioxidant enzymes and reactive oxygen species (ROS) clearance.
View Article and Find Full Text PDFL-histidine makes Ni 'visible' for plant signalling systems: Shading the light on Ni-induced Ca and redox signalling in plants.
Plant Physiol Biochem
October 2024
International Research Centre for Environmental Membrane Biology and Department of Horticulture, Foshan University, Foshan, China; V.F. Kuprevich Institute of Experimental Botany, National Academy of Sciences of Belarus, Minsk, Belarus. Electronic address:
Nickel is both an important nutrient and an ecotoxicant for plants. Organic ligands, such as L-histidine (His), play a key role in Ni detoxification. Here, we show that His (added together with 0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!