The process of plant immune response is orchestrated by intracellular signaling molecules. Since plants are devoid of a humoral system, they develop extensive mechanism of pathogen recognition, signal perception, and intricate cell signaling for their protection from biotic and abiotic stresses. The pathogenic attack induces calcium ion accumulation in the plant cells, resulting in calcium signatures that regulate the synthesis of proteins of defense system. These calcium signatures induct different calcium dependent proteins such as calmodulins (CaMs), calcineurin B-like proteins (CBLs), calcium-dependent protein kinases (CDPKs) and other signaling molecules to orchestrate the complex defense signaling. Using advanced biotechnological tools, the role of Ca signaling during plant-microbe interactions and the role of CaM/CMLs and CDPKs in plant defense mechanism has been revealed to some extent. The Emerging perspectives on calcium signaling in plant-microbe interactions suggest that this complex interplay could be harnessed to improve plant resistance against pathogenic microbes. We present here an overview of current understanding in calcium signatures during plant-microbe interaction so as to imbibe a future direction of research.
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http://dx.doi.org/10.3389/fpls.2023.1248648 | DOI Listing |
BMC Plant Biol
March 2025
School of Life Sciences and Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China.
Metabolites are important signaling molecules mediating plant-microbe interaction in soil. Plant root exudates are composed of primary metabolites, secondary metabolites, and macro-molecules such as organic acids. Certain organic acids in root exudates can attract pathogenic microbes in soil and promote infection.
View Article and Find Full Text PDFMol Plant Microbe Interact
March 2025
China Medical University, Department of Medical Laboratory Science and Biotechnology, 14th Floor, Lifu Teaching Building, No. 91, Xue-Shi Road, North District, Taichung, Taiwan, Taiwan, 404333;
The necrotrophic pathogen produces a host-selective toxin to attack its host plants. This study characterized the crucial function of the Mip1/RAPTOR ortholog (AaMip1) in toxin production and autophagy formation. AaMip1 physically interacts with the Target of Rapamycin (Tor) protein.
View Article and Find Full Text PDFJ Integr Plant Biol
March 2025
Key Laboratory of Bio-resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China.
Small peptides (SPs) are pivotal signaling molecules that play essential roles in the precise regulation of plant growth, development, and stress responses. Recent advancements in sequencing technologies, bioinformatics approaches, and biochemical and molecular techniques have significantly enhanced the accuracy of SP identification, unveiling their diverse biological functions in plants. This review provides a comprehensive overview of the characteristics and methodologies for identifying SPs in plants.
View Article and Find Full Text PDFNew Phytol
March 2025
Institute for Plant Sciences, University of Cologne, 50674, Cologne, Germany.
Lipids play crucial roles in plant-microbe interactions, functioning as structural components, signaling molecules, and microbe-associated molecular patterns (MAMPs). However, the mechanisms underlying lipid perception and signaling in plants remain largely unknown. Here, we investigate the immune responses activated in barley (Hordeum vulgare) by lipid extracts from the beneficial root endophytic fungus Serendipita indica and compare them to responses elicited by chitohexaose and the fungal sterol ergosterol.
View Article and Find Full Text PDFmSystems
February 2025
Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China.
Flavonoids, a major component of plant root exudates, play a crucial role in mediating plant-microbe interactions. However, the mechanisms by which flavonoids are perceived and trigger downstream signaling events in microbes remain largely unknown. In this study, we characterized AefR, a flavonoid-sensing transcriptional regulator from 2P24, a plant growth-promoting rhizobacterium (PGPR) known for its biocontrol properties.
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